Browse by All Cardiff Authors

Al-Rawachy, Azam, Baddeley, Alexander, Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Gecan, Dragan, Sheikh, Aamir, Bogusz, Aleksander ORCID: https://orcid.org/0000-0002-4055-4812, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Automated Cardiff model complexity identification and parameters extraction from measured tailored A-pull data. IEEE Journal of Microwaves 5 (5) , pp. 1150-1161. 10.1109/JMW.2025.3600995

Morales Fernandez, Ainhoa, Fernandez Barciela, Monica, Martin Rodriguez, Fernando and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2025. Hybrid balanced frequency doubler up-converting from 2.45 to 4.9 GHz using packaged GaN HEMTs and a Moore space-filling coupler design approach. International Journal of Microwave and Wireless Technologies 10.1017/s1759078725101955

Baddeley, Alexander, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Calibration error reduction in millimeter-wave load-pull systems measuring highly-reflective loads. IEEE Transactions on Microwave Theory and Techniques 73 (6) , pp. 3552-3564. 10.1109/TMTT.2024.3495544

Ghozati, Seyed Urman ORCID: https://orcid.org/0000-0002-6014-5223, Merhabi Azad, Ehsan, Chaudhry, Kauser, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Cardiff behavioral model of a Ka-Band SPDT switch trained on structured minimization of load-pull characterization data. Presented at: 2025 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, Torino, Italy, 10-11 April 2025. Proceedings of the International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits. IEEE, pp. 1-4. 10.1109/INMMIC64198.2025.10975719

Van Den Heuvel, Indy, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Improved iterative envelope simulation for the efficient prediction of the impact of wideband modulated signals on power amplifier performance. Presented at: 2025 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, Torino, Italy, 10-11 April 2025. Proceedings of the International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits. IEEE, pp. 1-4. 10.1109/INMMIC64198.2025.10975660

Tian, Mengyue, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Azad, Ehsan M. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Artificial neural network nonlinear transistor behavioral models: Structure and parameter determination process based on the Cardiff Model. IEEE Transactions on Microwave Theory and Techniques 73 (2) , pp. 745-759. 10.1109/TMTT.2024.3434959

Morales-Fernandez, Ainhoa, Martin-Rodriguez, Fernando, Moure-Fernandez, Rocio, Fernandez-Barciela, Monica, Bogusz, Aleksander and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2025. Cardiff behavioral model analysis for frequency doubler design. Presented at: 2025 IEEE MTT-S Latin America Microwave Conference (LAMC), San Juan, PR, USA, 22-24 January 2025. Proceedings IEEE MTT-S Latin America Microwave Conference (LAMC). IEEE, pp. 20-23. 10.1109/lamc63321.2025.10880564

Morales-Fernandez, Ainhoa, Marante-Boado, Maria, Toimil-Cornado, Pedro, Fernandez-Barciela, Monica, Martin-Rodriguez, Fernando and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2024. Single-ended and balanced frequency doublers 2.45 to 4.9 GHz using GaN FETs. Presented at: 54th European Microwave Conference (EuMC), Paris, France, 24-26 September 2024. 2024 54th European Microwave Conference (EuMC). IEEE, pp. 1042-1045. 10.23919/eumc61614.2024.10732057

van den Heuvel, Indy, Azad, Ehsan M., Omisakin-Edwards, Mark, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X 2024. A baseband impedance cancellation technique for wideband multi-transistor amplifiers. IEEE Microwave and Wireless Technology Letters 34 (6) , pp. 777-780. 10.1109/LMWT.2024.3390594

Tian, Mengyue, Urvoy, Jean-Baptiste, Powell, Jeff, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X 2024. Application of the Cardiff Model for Orthogonal LMBA response prediction. Presented at: 2024 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR), 21-24 January 2024. Proceedings Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR) 2024. IEEE, pp. 17-20. 10.1109/PAWR59907.2024.10438664

Tian, Mengyue, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2024. An extraction method based on artificial neural network techniques for novel Cardiff model with reasonable extrapolation behavior. IEEE Microwave and Wireless Components Letters 34 (1) , pp. 5-8. 10.1109/LMWT.2023.3329979

Van Den Heuvel, Indy, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2023. An envelope model for efficient prediction of the impact of wideband signals on power amplifier performance. Presented at: 2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 08-11 November 2023. 2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC). IEEE, 10.1109/INMMIC57329.2023.10321784

Baddeley, Alexander, Woodington, Simon, Gecan, Dragan, Sheikh, Aamir, Lunn, Jamie, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X 2023. Millimeter-wave on-wafer large signal characterization system for harmonic source/load pull and waveform measurements. Presented at: 2023 IEEE/MTT-S International Microwave Symposium - IMS 2023, San Diego, USA, 11-16 June 2023. Proceedings of the 2023 IEEE/MTT-S International Microwave Symposium (IMS). IEEE, pp. 1101-1104. 10.1109/IMS37964.2023.10187929

Ghozati, Seyed U. ORCID: https://orcid.org/0000-0002-6014-5223, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Azad, Ehsan, Powell, Jeff, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2023. Load pull-driven behavioral modelling of microwave switches for the design of tunable reflective terminations. Presented at: EuMW 2024: European Microwave Week 2023, 19 - 21 September 2023.

Tian, Mengyue, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199, Azad, Ehsan, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2023. A novel Cardiff model coefficients extraction process based on artificial neural network. Presented at: 2023 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless ApplicationsED, MAY BE LINKED, Las Vegas, NV, USA, 22-25 January 2023. 2023 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications. IEEE, 10.1109/PAWR56957.2023.10046221

Moure, Maria Rocio, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Ladero, Nicolas, Fernandez‐Barciela, Monica and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. Evaluation of admittance domain behavioural model complexity requirements for Power Amplifier design. IET Microwaves, Antennas and Propagation 16 (12) , pp. 780-788. 10.1049/mia2.12285

Azad, Ehsan M., Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Chadhary, Kauser, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. Cardiff model utilization for predicting the response of multiple-input power amplifiers. Presented at: Mediterrannean Microwave Symposium (MMS), Pizzo Calabro, Italy, 9-13 May 2022. Proceedings of Microwave Mediterranean Symposium (MMS). IEEE, 10.1109/MMS55062.2022.9825516

Azad, Ehsan M., Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Moreno Rubio, Jorge J. ORCID: https://orcid.org/0000-0003-3376-4464 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. New formulation of Cardiff behavioral model including DC bias voltage dependence. IEEE Microwave and Wireless Components Letters 32 (6) , pp. 607-610. 10.1109/LMWC.2022.3140653

Davies-Smith, Cory, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Woodington, Simon, Sheikh, Aamir and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2022. An enhanced active load-pull algorithm for faster convergence. Presented at: European Microwave Week 2021, London, UK, 2-7 April 2022. European Microwave Week 2021 "United in Microwaves" Conference Proceedings. IEEE, p. 354. 10.23919/EuMC50147.2022.9784250

Azad, Ehsan M., Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Chaudhry, Kauser, Nghiem, Anh, Sulaksono, Komo and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. Load-pull data analysis of a GaN on SiC HEMT targeting multi bias Doherty design. Presented at: International Workshop on Integrated Nonlinear Microwave and Millimeterwave Circuits, INMMIC, Cardiff, UK, 7-8 April 2022. Proceedings of the 2022 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits. IEEE, 10.1109/INMMiC54248.2022.9762106

Morales-Fernandez, Ainhoa, Fernandez-Barciela, Monica, Isasi-Vicente, Fernando, Martin-Rodriguez, Fernando and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. Dual-band class J power amplifier at 2.45 and 5.8 GHz for UAVs communications. IEEE Access 10 , pp. 48673-48680. 10.1109/ACCESS.2022.3172475

Baddeley, Alexander, Azad, Ehsan, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2022. Gate bias voltage dependence of Cardiff admittance model in Ka-band GaAs pHEMTs. Presented at: IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR), Las Vegas, NV, USA, 16-19 January 2022. 2022 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR). IEEE, pp. 8-10. 10.1109/PAWR53092.2022.9719858

Yang, Feiyuan, Singh, Manikant, Uren, Michael J., Martin, Trevor, Hirshy, Hassan, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Kuball, Martin 2022. Study of drain injected breakdown mechanisms in AlGaN/GaN-on-SiC HEMTs. IEEE Transactions on Electron Devices 69 (2) , pp. 525-530. 10.1109/TED.2021.3138841

Azad, Ehsan M., Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Chaudhry, Kauser and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2022. DC-dependent Cardiff model from modulated supply and load-pull data. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November 2022 - 02 December 2022. Proceedings of 2022 Asia-Pacific Microwave Conference (APMC). IEEE, pp. 181-183. 10.23919/APMC55665.2022.9999796

Rubio, Jorge Julian Moreno, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Piacibello, Anna, Camarchia, Vittorio, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2021. 3-20 GHz GaN MMIC Power Amplifier Design Through a COUT Compensation Strategy. IEEE Microwave and Wireless Components Letters 31 (5) , pp. 469-472. 10.1109/LMWC.2021.3066282

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2021. Robust extraction of Cardiff model parameters from appropriately tailored measured load-pull data. Presented at: 2020 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Monterey, CA, USA, 16-19 November 2020. 2020 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS). IEEE, pp. 1-5. 10.1109/BCICTS48439.2020.9392942

Alimohammadi, Yashar, Kuwata, Eigo, Liu, Xuan, Azad, Ehsan M., Bell, James ORCID: https://orcid.org/0000-0002-4815-2199, Wu, Lei, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2021. Incorporating gate-lag effects into the Cardiff Behavioural Model. Presented at: 50th European Microwave Conference (EuMC 2020), Utrecht, Netherlands, 12-14 January 2021. 2020 50th European Microwave Conference (EuMC). IEEE, pp. 684-687. 10.23919/EuMC48046.2021.9338185

Azad, Ehsan M., Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Moreno Rubio, Jorge J. ORCID: https://orcid.org/0000-0003-3376-4464 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2020. Gate bias incorporation into Cardiff behavioural modelling formulation. Presented at: IEEE/MTT-S International Microwave Symposium (IMS 2020), Los Angeles, CA, USA, 4-6 August 2020. 2020 IEEE/MTT-S International Microwave Symposium (IMS). IEEE, pp. 420-423. 10.1109/IMS30576.2020.9223817

Alimohammadi, Yashar, Kuwata, Eigo, Liu, Xuan, Husseini, Thoalfukar, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199, Wu, Lei, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2020. Pulse profiling active load pull measurements. Presented at: IEEE/MTT-S International Microwave Symposium (IMS 2020), Los Angeles, CA, USA, 4-6 August 2020. 2020 IEEE/MTT-S International Microwave Symposium (IMS). IEEE, pp. 759-762. 10.1109/IMS30576.2020.9223989

Moreno Rubio, Jorge ORCID: https://orcid.org/0000-0003-3376-4464, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Baddeley, Alexander, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen ORCID: https://orcid.org/0000-0002-2258-951X 2020. Design of a broadband power amplifier based on power and efficiency contours estimation. IEEE Microwave and Wireless Components Letters 30 (8) , 772 -774. 10.1109/LMWC.2020.3005833

Chen, Peng, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Merrick, Brian M., Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2020. Look-up table method for optimising coupling ratio in broadband sequential power amplifiers. IET Microwaves Antennas and Propagation 14 (13) , pp. 1626-1634. 10.1049/iet-map.2019.1102

Chen, Peng, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Merrick, Brian M., Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2020. Efficiency enhancement of a broadband sequential power amplifier using envelope tracking. Presented at: 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC), Cardiff, Wales, 16-17 July 2020. 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC). IEEE, pp. 1-3. 10.1109/INMMiC46721.2020.9160332

Chen, Peng, Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Moreno Rubio, Jorge, Alsahali, Sattam, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2020. Optimising linearity of envelope tracking power amplifier using baseband linearisation approach. Presented at: 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC), Cardiff, Wales, 16-17 July 2020. 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC). IEEE, pp. 1-3. 10.1109/INMMiC46721.2020.9160347

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Villarruel-Parra, Alejandro, Chen, Peng, Alsahali, Sattam, Forsyth, Andrew, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2020. Characterising the baseband impedance of supply modulators using simple modulated signals. Presented at: 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC), Cardiff, Wales, 16-17 July 2020. 2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC). IEEE, pp. 1-3. 10.1109/INMMiC46721.2020.9160186

Chen, P., Alsahali, S., Alt, A. ORCID: https://orcid.org/0000-0002-7621-4940, Wang, G., Casbon, M. A. ORCID: https://orcid.org/0000-0002-8637-9888, Lees, J. ORCID: https://orcid.org/0000-0002-6217-7552 and Tasker, P. J. ORCID: https://orcid.org/0000-0002-6760-7830 2020. Flexible bandwidth reduction technique for envelope tracking using low-pass finite impulse response filters. Electronics Letters 56 (12) , pp. 586-589. 10.1049/el.2020.0194

Alsahali, S., Gecan, D., Alt, A. ORCID: https://orcid.org/0000-0002-7621-4940, Chen, P., Woodington, S., Sheikh, A., Tasker, P. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, J. ORCID: https://orcid.org/0000-0002-6217-7552 2020. Modulated rapid load pull system for the emulation of envelope tracking power amplifiers. Electronics Letters 56 (7) , pp. 325-328. 10.1049/el.2019.3896

Chaudhary, Muhammad Akmal, Yusoff, Zubaida, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2019. Auxiliary envelope tracking focused investigations of a 10W GaN HEMTs device. Presented at: 3rd International Conference on Circuits, Systems and Devices (ICCSD), Chengdu, China, 23-25 Aug 2017. Proceedings of 3rd International Conference on Circuits, Systems and Devices (ICCSD). IEEE, p. 92. 10.1109/ICCSD.2019.8843202

Mokhti, Zulhazmi A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Cassan, Cedric, Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2019. The nonlinear drain-source capacitance effect on continuous-mode class-B/J power amplifiers. IEEE Transactions on Microwave Theory and Techniques 67 (7) , pp. 2741-2747. 10.1109/TMTT.2019.2918309

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Jiang, Sheng, Lee, Kean Boon, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Chen, Peng, Houston, Peter, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Analysis of gain variation with changing supply voltages in GaN HEMTs for envelope tracking power amplifiers. IEEE Transactions on Microwave Theory and Techniques 67 (7) , pp. 2495-2504. 10.1109/TMTT.2019.2916404

Alsahali, Sattam, Gecan, Dragan, Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Wang, Guofeng, Syed Anera, Syed M. H., Chen, Peng, Woodington, Simon, Sheikh, Aamir, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. A novel modulated rapid load pull system with digital pre-distortion capabilities. Presented at: 2019 93rd ARFTG Microwave Measurement Conference (ARFTG), Boston, MA, USA, 7 June 2019. 10.1109/ARFTG.2019.8739220

Al-Rawachy, Azam, Husseini, Thoalfukar, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Bell, James ORCID: https://orcid.org/0000-0001-8371-9851 2019. Cardiff behavioural model analysis using a two-tone stimulus. Presented at: 2019 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR), Orlando, FL, USA, 20-23 January 2019. 2019 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR). IEEE, pp. 5-8. 10.1109/PAWR.2019.8708726

Syed Anera, Syed M. H., Husseini, Thoalfukar, Alsahali, Sattam, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Kermalli, Munawar, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2019. High-efficiency broadband PA design based on continuous Class-F mode with compression. Presented at: 2019 IEEE MTT-S International Microwave Symposium, IMS 2019, Boston, USA, 2 -7 June 2019. MTT-S International Microwave Symposium (IMS). IEEE, pp. 698-701. 10.1109/MWSYM.2019.8700767

Al-Rawachy, Azam, Husseini, Thoalfukar, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2019. Behavioural model extraction using novel multitone active load-pull. Presented at: 2019 IEEE MTT-S International Microwave Symposium, IMS 2019, Boston, USA, 2 -7 June 2019. MTT-S International Microwave Symposium (IMS). IEEE, pp. 196-199. 10.1109/MWSYM.2019.8700779

Chandrasekar, Hareesh, Uren, Michael J., Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097, Pomeroy, James W., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Kuball, Martin 2019. Quantifying temperature-dependent substrate loss in GaN-on-Si RF technology. IEEE Transactions on Electron Devices 66 (4) , pp. 1681-1687. 10.1109/TED.2019.2896156

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Chen, Peng, Alsahali, Sattam, Wang, Guofeng, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Impact of the input impedance on the linearity of supply modulated GaN HEMT power amplifiers. Presented at: European Microwave Week 2019 (EuMW2019), 29 September - 03 October 2019.

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Chen, Peng, Alsahali, Sattam, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Class B* - A new high efficiency RF DC/DC converter concept using second harmonic generation/injection. Presented at: WPTC 2018: IEEE MTT-S Wireless Power Transfer Conference, Montreal, Quebec, 3-7 June 2018. 2018 IEEE Wireless Power Transfer Conference (WPTC). IEEE, 10.1109/WPT.2018.8639317

Husseini, Thoalfukar, Al-Rawachy, Azam, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2019. Global behavioural model generation using coefficients interpolation. Presented at: 2019 IEEE MTT-S International Microwave Symposium, IMS 2019, Boston, USA, 2 -7 June 2019. -.

Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Singh, Manikant, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Perks, Richard M. ORCID: https://orcid.org/0000-0003-0873-0537, Uren, Michael J., Martin, Trevor, Kuball, Martin and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2018. Evaluation of pulsed I-V analysis as validation tool of nonlinear RF models of GaN-based HFETs. IEEE Transactions on Electron Devices 65 (12) , pp. 5307-5313. 10.1109/TED.2018.2872513

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Chen, Peng, Alsahali, Sattam, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2018. Analysis of highly efficient self-synchronous class-F microwave rectifiers using waveform engineering. Presented at: 48th European Microwave Conference (EuMC), Madrid, Spain, 23-27 Sep 2018. Proceedings of the 48th European Microwave Conference. Piscataway, NJ: IEEE, pp. 773-776. 10.23919/EuMC.2018.8541564

Chandrasekar, Hareesh, Uren, Michael J., Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097 and Kuball, Martin 2018. Buffer-induced current collapse in GaN HEMTs on highly resistive Si substrates. IEEE Electron Device Letters 39 (10) , pp. 1556-1559. 10.1109/LED.2018.2864562

Singh, Manikant, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Uren, Michael J, Pomeroy, James W, Dalcanale, Stefano, Karboyan, Serge, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Wong, Man Hoi, Sasaki, Kohei, Kuramata, Akito, Yamakoshi, Shigenobu, Higashiwaki, Masataka and Kuball, Martin 2018. Pulsed large signal RF performance of field-plated Ga2O3 MOSFETs. IEEE Electron Device Letters 39 (10) , pp. 1572-1575. 10.1109/LED.2018.2865832

Husseini, Thoalfukar, Al-Rawachy, Azam, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bel, James and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2018. Automating the accurate extraction and verification of the Cardiff Model via the direct measurement of load-pull power contours. Presented at: 2018 IEEE/MTT-S International Microwave Symposium - IMS, Philadelphia, PA, USA, 10-15 June 2018. 2018 IEEE/MTT-S International Microwave Symposium - IMS. IEEE, p. 544. 10.1109/MWSYM.2018.8439581

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Chen, Peng, Alsahali, Sattam, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2018. Comparing FET technologies in terms of their suitability for broadband envelope tracking power amplifiers. Presented at: InMMIC, Brive La Gaillarde, 5-6 July 2018. -.

Chen, Peng, Alsahali, Sattam, Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2018. Behavioral modeling of GaN power amplifiers using long short-term memory networks. Presented at: International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMIC), Brive La Gaillarde, France, 5-6 Jul 2018. International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMIC). IEEE, 10.1109/INMMIC.2018.8429984

Husseini, Thoalfukar, Al-Rawachy, Azam, Anera, Syed S., Bell, James ORCID: https://orcid.org/0000-0002-4815-2199, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2018. On the effective modeling of the test-set non-linearity. Presented at: 2018 91st ARFTG Microwave Measurement Conference (ARFTG), Philadelphia, PA, USA, 15 June 2018. 2018 91st ARFTG Microwave Measurement Conference (ARFTG). IEEE, 10.1109/ARFTG.2018.8423832

Chaudhary, Muhammad Akmal, Memon, Zulfiqar Ali, Yusoff, Zubaida, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2018. Optimization of out-of-band impedance environment for linearity improvements of microwave power transistors. Presented at: 2018 5th International Conference on Electrical and Electronic Engineering (ICEEE), Istanbul, Turkey, 3-5 May 2018. 2018 5th International Conference on Electrical and Electronic Engineering (ICEEE). IEEE, pp. 219-223. 10.1109/ICEEE2.2018.8391334

Roff, Chris, Bennedikt, J., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Wallis, D.J. ORCID: https://orcid.org/0000-0002-0475-7583, Hilton, K.P., Maclean, J.O., Hayes, D.G., Uren, M. J. and Martin, T. 2018. Utilization of waveform measurements for degradation analysis of AlGaN/GaN HFETs. Presented at: ARFTG 70th Microwave Measurement Symposium, Tempe, AZ, USA, 27-30 November 2007. 2007 70th ARFTG Microwave Measurement Conference (ARFTG). IEEE, 10.1109/ARFTG.2007.8376173

Moure, M. Rocio, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Ladero, Nicolas, Fernandez-Barciela, Monica and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2018. A systematic investigation of admittance domain behavioral model complexity requirements. Presented at: 2018 IEEE MTT-S Latin America Microwave Conference (LAMC 2018), Arequipa, Peru, 12-14 December 2018. 2018 IEEE MTT-S Latin America Microwave Conference (LAMC 2018). Piscataway, NJ: IEEE, 10.1109/LAMC.2018.8699054

Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Powell, Jeff, Shepphard, Dan, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Steve 2018. Analysis and characterization of a load modulated balanced amplifier for base-station applications. Presented at: 2018 11th German Microwave Conference (GeMiC), Freiburg, Germany, 12-14 March 2018. 2018 11th German Microwave Conference (GeMiC). IEEE, pp. 1-4. 10.23919/GEMIC.2018.8335013

Chaudhary, Muhammad Akmal, Memon, Zulfiqar Ali, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2018. Multitone measurement system for linearity investigations of microwave devices. Presented at: International Multi-Topic Conference (Inmic), Lahore, Pakistan, 24-26 Nov 2017. International Multi-Topic Conference (Inmic). IEEE, 10.1109/INMIC.2017.8289455

Bogusz, Aleksander, Costello, Zack,, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen ORCID: https://orcid.org/0000-0002-2258-951X 2018. Power and efficiency continuous modes in saturated GaN HEMT devices. Presented at: Inmmic 2018, Brive-La-Gaillarde, France, 5- 6 July 2018.

Rocio Moure, M., Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Fernandez-Barciela, Monica and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2017. Direct extraction of an admittance domain behavioral model from large-signal load-pull measurements. Presented at: 2017 IEEE MTT-S International Microwave Symposium (IMS), Honololu, HI, USA, 4-9 June 2017. 2017 IEEE MTT-S International Microwave Symposium (IMS). IEEE, pp. 1053-1056. 10.1109/MWSYM.2017.8058775

Brazzini, Tommaso, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Uren, Michael J., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Jung, Helmut, Blanck, Herve and Kuball, Martin 2017. Hot-electron electroluminescence under RF operation in GaN-HEMTs: A comparison among operational classes. IEEE Transactions on Electron Devices 64 (5) , pp. 2155-2160. 10.1109/TED.2017.2686782

Fernandez-Barciela, Monica, Rocio Moure, M., Pelaez-Perez, Ana, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2017. Exploiting behavioral modelling formulations for nonlinear analytical circuit design and improved frequency scalability Bandwidth extension through the admittance domain (Invited Paper). Presented at: 2017 IEEE 18th Wireless and Microwave Technology Conference (WAMICON), Cocoa Beach, FL, USA, 24-25 April 2017. 2017 IEEE 18th Wireless and Microwave Technology Conference (WAMICON). IEEE, pp. 1-496. 10.1109/WAMICON.2017.7930279

Dong, Shi-Wei, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2017. A de-embedding network at higher frequency and its error analysis. Presented at: IEEE International Conference on Electronic Information and Communication Technology (ICEICT), Harbin, China, 20-22 Aug 2016. IEEE International Conference on Electronic Information and Communication Technology (ICEICT). IEEE, pp. 512-514. 10.1109/ICEICT.2016.7879754

Chaudhary, Muhammad Akmal, Memon, Zulifqar Ali, Yusoff, Zubaida, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2017. Characterization of baseband electrical memory in microwave devices using multi-tone measurement system. Presented at: 2016 16th Mediterranean Microwave Symposium (MMS), 14-16 November 2016. 16th Mediterranean Microwave Symposium (MMS), 2016. IEEE, p. 1. 10.1109/MMS.2016.7803811

Pooth, A., Bergsten, J., Rorsman, N., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Perks, Richard ORCID: https://orcid.org/0000-0003-0873-0537, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Martin, T., Webster, R., Cherns, D., Uren, M. and Kuball, M. 2017. Morphological and electrical comparison of Ti and Ta based ohmic contacts for AlGaN/GaN-on-SiC HFETs. Microelectronics Reliability 68 , pp. 2-4. 10.1016/j.microrel.2016.11.002

Moure, M. Rocio, Fernandez-Barciela, Monica, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2016. Broadband non-linear FET behavioral model defined in the admittance domain. Presented at: 11th European Microwave Integrated Circuits Conference (EuMIC), London, UK, 3-4 October 2016. 2016 11th European Microwave Integrated Circuits Conference (EuMIC 2016). Institute of Electrical and Electronics Engineers (IEEE), pp. 281-284. 10.1109/EuMIC.2016.7777545

Dong, Shi-Wei, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Wang, Guofeng and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2016. A practicable de-embedding network at higher frequency of a packaged GaN device. Presented at: 2016 IEEE MTT-S International Wireless Symposium (IWS), 14-16 March 2016. IEEE MTT-S International Wireless Symposium (IWS), 2016. IEEE, p. 1. 10.1109/IEEE-IWS.2016.7585473

Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Brazzini, Tommaso, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Uren, Michael and Kuball, Martin 2016. Simultaneous measurement of optical and RF behavior under CW and pulsed fully active harmonic load-pull. Presented at: ARFTG 87th Conference: Measurements for Emerging Communications Technologies, San Francisco, CA, USA, 27 May 2016.

Loescher, David, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen ORCID: https://orcid.org/0000-0002-2258-951X 2016. Using waveform engineering to understand the impact of harmonic terminations during 5:1 VSWR stress tests. Presented at: Power Amplifiers for Wireless and Radio Applications (PAWR), 2016 IEEE Topical Conference on, Austin, TX, USA, 24-27 Jan. 2016. 2016 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications (PAWR). IEEE, pp. 49-52. 10.1109/PAWR.2016.7440161

Chaudhary, Muhammad Akmal, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2016. Modulated waveform measurement and engineering system. Presented at: 2015 2nd International Conference on Electronics and Communication Systems (ICECS), Cairo, Egypt, 6-9 December 2015. 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS 2015). Institute of Electrical and Electronics Engineers (IEEE), pp. 252-255. 10.1109/ICECS.2015.7440296

Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097, Houston, P and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2016. EPSRC projects in microwave, millimetre-wave and THz research, integration of RF circuits with high speed GaN switching on silicon substrates. Presented at: European Microwave Conference, London, 3-7 Oct 2016.

Brazzini, Tommaso, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Sun, Huarui, Uren, Michael J., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Jung, Helmut, Blanck, Herve and Kuball, Martin 2015. Study of hot electrons in AlGaN/GaN HEMTs under RF Class B and Class J operation using electroluminescence. Microelectronics Reliability 55 (12) , pp. 2493-2498. 10.1016/j.microrel.2015.09.023

Mokhti, Z. A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cassan, C. 2015. Investigating the linearity versus efficiency trade-off of different power amplifier modes in an envelope tracking architecture. 2015 10th European microwave integrated circuits conference (eumic) , pp. 357-360. 10.1109/EuMIC.2015.7345143

Hashmi, Mohammad S., Ghannouchi, Fadhel M. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2015. High frequency waveform engineering and its applications: tutorial 54. IEEE Instrumentation & Measurement Magazine 18 (3) , pp. 44-50. 10.1109/MIM.2015.7108400

Brazzini, Tommaso, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Sun, Huarui, Uren, Michael J., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Jung, Helmut, Blanck, Herve and Kuball, Martin 2015. Electroluminescence of hot electrons in AlGaN/GaN high-electron-mobility transistors under radio frequency operation. Applied Physics Letters 106 (21) , 213502. 10.1063/1.4921848

Rodriguez-Testera, Alejandro, Pelaez-Perez, Ana, Fernandez-Barciela, Monica and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2015. Design of injection-locked oscillator circuits using an HBT X-parameters (TM)-based model. IET Microwaves, Antennas and Propagation 9 (4) , pp. 380-388. 10.1049/iet-map.2014.0118

Casbon, M. A. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2015. Comparison of sampler and VNA based Large Signal Measurement Systems (LSNA) under CW and pulsed operation. Presented at: 2015 85th Microwave Measurement Conference (ARFTG), 22-26 May 2015. Microwave Measurement Conference (ARFTG), 2015 85th. IEEE, p. 1. 10.1109/ARFTG.2015.7162890

Root, David E., Biernacki, Radoslaw M., Marcu, Mihai, Koh, Minghao and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2015. Frequency-scalable nonlinear behavioral transistor model from single frequency X-parameters based on time-reversal transformation properties (INVITED). Presented at: 2015 86th ARFTG Microwave Measurement Conference, 3-4 December 2015. Microwave Measurement Conference, 2015 86th ARFTG. IEEE, p. 1. 10.1109/ARFTG.2015.7381463

Canning, Timothy A. J., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Steven Charles ORCID: https://orcid.org/0000-0002-2258-951X 2014. Continuous mode power amplifier design using harmonic clipping contours: theory and practice. IEEE Transactions on Microwave Theory and Techniques 62 (1) , pp. 100-110. 10.1109/TMTT.2013.2292675

Koh, M., Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199, Williams, D., Patterson, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Root, D. E. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2014. Frequency scalable large signal transistor behavioral model based on admittance domain formulation. Presented at: International Microwave Symposium, Tampa, Florida, 1-6 June 2014. 2014 IEEE MTT-S International Microwave Symposium (IMS). Picastaway, NJ: IEEE, pp. 1-3. 10.1109/MWSYM.2014.6848287

A Mokhti, Zulhazmi Bin, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2014. Correlation analysis between a VNA-based passive load pull system and an oscilloscope-based active load pull system: a case study. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, USA, 6 June 2014. 83rd ARFTG Microwave Measurement Conference (ARFTG), 2014. pp. 1-4. 10.1109/ARFTG.2014.6899535

Ogboi, Friday Lawrence, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2014. Investigation of various envelope complexity linearity under modulated stimulus using a new envelope formulation approach. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, USA, 1 - 6 June 2014. Compound Semiconductor Integrated Circuit Symposium (CSICs), 2014 IEEE. IEEE, pp. 1-4. 10.1109/CSICS.2014.6978563

Fernandez-Barciela, M., Pelaez-Perez, A. M., Woodington, S., Alonso, J. I. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2014. Stretching the design: extending analytical circuit design from the linear to the nonlinear domain. IEEE Microwave Magazine 15 (6) , pp. 106-120. 10.1109/MMM.2014.2332851

Yang, F., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Yu, H. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2014. Continuous class BJ power amplifier with DGS output matching. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, USA, 6 June 2014. Microwave Symposium (IMS), 2014 IEEE MTT-S International. IEEE, pp. 1-4. 10.1109/MWSYM.2014.6848562

A Mokhti, Zulhazmi Bin, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2014. Using waveform engineering to optimize class-F power amplifier performance in an envelope tracking architecture. Presented at: 44th European Microwave Conference (EuMC) 2014, Rome, Italy, 6-9 October 2014. 44th European Microwave Conference (EuMC 2014). IEEE, pp. 1301-1304. 10.1109/EuMC.2014.6986682

Aldoumani, Anoor, Williams, Tudor, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2014. Enhanced vector calibration of load-pull measurement systems. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, FL, USA, 6 June 2014. ARFTG Microwave Measurement Conference (ARFTG), 2014 83rd. IEEE, pp. 1-4. 10.1109/ARFTG.2014.6899508

Ogboi, Friday Lawrence, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Akmal, M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2014. High bandwidth investigations of a baseband linearization approach formulated in the envelope domain under modulated stimulus. Presented at: European Microwave Conference (EuMC) 2014, Rome, Italy, 6-9 October 2014. European Microwave Conference (EuMC). , vol.44 IEEE, pp. 1305-1308. 10.1109/EuMC.2014.6986683

Mokhti, Z. A., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2014. Using waveform engineering to optimize Class-F power amplifier performance in an envelope tracking architecture. Presented at: 9th European Microwave Integrated Circuit Conference (EuMIC), Rome, Italy, 6-7 Octpber 2014. European Microwave Integrated Circuit Conference (EuMIC), 2014 9th. IEEE, pp. 357-360. 10.1109/EuMIC.2014.6997866

Mokhti, Z. A., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2014. Analyzing the improvement in efficiency through the integration of class-F power amplifiers compared to class-AB in an envelope tracking architecture. Presented at: 26th International Teletraffic Congress (ITC), Karlskrona, Sweden, 9-11 September 2014. Teletraffic Congress (ITC), 2014 26th International. pp. 1-4. 10.1109/ITC.2014.6932967

Ogboi, Friday Lawrence, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Mohkti, Z., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2014. Sensitivity of AM/AM linearizer to AM/PM distortion in devices. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, FL, USA, 6 June 2014. ARFTG Microwave Measurement Conference (ARFTG), 2014 83rd. IEEE, pp. 1-4. 10.1109/ARFTG.2014.6899507

Yusoff, Zubaida, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Chaudhary, Muhammad Akmal, Carrubba, Vincenzo, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2013. Simple and low-cost tracking generator design in envelope tracking radio frequency power amplifier system for WCDMA applications. IET Microwaves, Antennas & Propagation 7 (10) , pp. 802-808. 10.1049/iet-map.2013.0091

Koh, M., Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Williams, D., Patterson, A., Wohlmuth, W., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2013. X-band MMIC scalable large signal model based on unit cell behavioral data model and passive embedding network. Presented at: International Microwave Symposium, Seattle, WA, 2-7 June 2013. 2013 IEEE MTT-S International Microwave Symposium Digest (IMS). Picastaway, NJ: IEEE, pp. 1-4. 10.1109/MWSYM.2013.6697424

Aldoumani, Anoor, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Saini, R. S., Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199, Williams, T. and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2013. Operation and calibration of VNA-based large signal RF I-V waveform measurements system without using a harmonic phase reference standard. Presented at: ARFTG Microwave Measurement Conference (ARFTG), Seattle, WA, 7-7 June 2013. 2013 81st ARFTG Microwave Measurement Conference (ARFTG). Picastaway, NJ: IEEE, pp. 1-4. 10.1109/ARFTG.2013.6579055

Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2013. Filter-less diplexer enables active harmonic load-pull at ka band. Presented at: 81st ARFTG Microwave Measurement Conference, Seattle, Washington, USA, 7 June 2013. Microwave Measurement Conference (ARFTG), 2013 81st ARFTG. 2013 81ST ARFTG MICROWAVE MEASUREMENT CONFERENCE (ARFTG). Picastaway: IEEE, pp. 1-4. 10.1109/ARFTG.2013.6579028

Ogboi, Friday Lawrence, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2013. A LSNA configured to perform baseband engineering for device linearity investigations under modulated excitations. Presented at: 43rd European Microwave Conference, Nuremberg, Germany, 7-10 October 2013. Proceedings of the 43rd European Microwave Conference. 2013 EUROPEAN MICROWAVE CONFERENCE (EUMC). pp. 684-687.

Canning, Timothy A. J., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2013. Waveform evidence of gate harmonic short circuit benefits for high efficiency x-band power amplifiers. IEEE Microwave and Wireless Components Letters 23 (8) , pp. 439-441. 10.1109/LMWC.2013.2272317

Canning, Timothy A. J., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2013. Load Pull verification of a novel Class B/J design tool: Second harmonic clipping contours. Presented at: 81 st ARFTG Microwave Measurement Conference, Seattle, WA, USA, 7 June 2013. Microwave Measurement Conference (ARFTG), 2013 81st ARFTG. IEEE, pp. 1-3. 10.1109/ARFTG.2013.6579040

Haynes, Mervin, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2013. High efficiency PA design strategy at X-Band. Presented at: 2013 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS), Monterey, CA, USA, 13-16 October 2013. Compound Semiconductor Integrated Circuit Symposium (CSICS), 2013 IEEE. IEEE, pp. 1-4. 10.1109/CSICS.2013.6659232

Chaudhary, M. A, Memon, Z. A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2013. Investigation of baseband electrical memory effects on the dynamic characteristics of power transistors. Presented at: 2013 16th International Multi Topic Conference (INMIC), Lahore, Pakistan, 19-20 December 2013. Multi Topic Conference (INMIC), 2013 16th International. IEEE, pp. 106-109. 10.1109/INMIC.2013.6731333

Chaudhary, Muhammad Akmal, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2013. Reduction of baseband electrical memory effects using broadband active baseband load-pull. Presented at: 2013 IEEE International Wireless Symposium (IWS), Beijing, China, 14-18 April 2013. Wireless Symposium (IWS), 2013 IEEE International. IEEE, pp. 1-4. 10.1109/IEEE-IWS.2013.6616709

Hone, Thomas M., Bensmida, Souheil, Morris, Kevin A., Beach, Mark A., McGeehan, Joe P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2013. Inverse active load-pull in an inverse Doherty amplifier. Presented at: 2013 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, Santa Clara, CA, USA, 20 Jauary 2013. Power Amplifiers for Wireless and Radio Applications (PAWR), 2013 IEEE Topical Conference on. IEEE, pp. 4-6. 10.1109/PAWR.2013.6490170

Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Wang, Wei-Chou, Lin, Che-Kai, Wang, Wen-Kai and Wohlmuth, W. 2013. Advanced RF IV waveform engineering tool for use in device technology optimization: RF pulsed fully active harmonic load pull with synchronized 3eV laser. Presented at: IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS), Monterey, CA, USA, 13-16 October 2013. Compound Semiconductor Integrated Circuit Symposium (CSICS), 2013 IEEE. IEEE, pp. 1-4. 10.1109/CSICS.2013.6659212

Hashmi, M. S., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Ghannouchi, F. M. 2012. High speed device characterization enabler: The Envelope Load-Pull system. Presented at: 2012 Asia-Pacific Microwave Conference Proceedings (APMC), New Delhi, India, 4-7 December 2012. Microwave Conference Proceedings (APMC), 2012 Asia-Pacific. pp. 839-841. 10.1109/APMC.2012.6421752

McGenn, William, Uren, Michael J., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Development of an RF IV waveform based stress test procedure for use on GaN HFETs. Microelectronics Reliability 52 (12) , pp. 2880-2883. 10.1016/j.microrel.2012.09.007

Pelaez-Perez, A. M., Woodington, Simon Philip, Fernandez-Barciela, M., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Alonso, J. I. 2012. Large-signal oscillator design procedure utilizing analytical x-parameters closed-form expressions. IEEE Transactions on Microwave Theory and Techniques 60 (10) , pp. 3126-3136. 10.1109/TMTT.2012.2209436

Bensmida, Souheil, Morris, Kevin A., Beach, Mark, McGeehan, Joe P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Akmal, Muhammad, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Nonlinear envelope tracking for efficiency optimization of power amplifiers. Presented at: 7th European Microwave Integrated Circuits Conference (EuMIC) 2012, Amsterdam, The Netherlands, 29-30 October 2012. 7th European Microwave Integrated Circuits Conference (EuMIC), 2012. Picastaway, NJ: IEEE, pp. 480-483.

Pelaez-Perez, A. M., Woodington, S., Alonso, J. I., Fernandez-Barciela, M. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. X-parameters®-based closed-form expressions for evaluating power-dependent fundamental negative and positive real impedance boundaries in oscillator design. IET Microwaves, Antennas & Propagation 6 (8) , pp. 835-840. 10.1049/iet-map.2011.0373

Carrubba, Vincenzo, Akmal, Muhammad, Quay, Rüdiger, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. The Continuous Inverse Class-F Mode With Resistive Second-Harmonic Impedance. IEEE Transactions on Microwave Theory and Techniques 60 (6) , pp. 1928-1936. 10.1109/TMTT.2012.2189228

Hone, Thomas M., Bensmida, Souheil, Morris, Kevin A., Beach, Mark A., McGeehan, Joe P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Controlling Active Load-Pull in a Dual-Input Inverse Load Modulated Doherty Architecture. IEEE Transactions on Microwave Theory and Techniques 60 (6) , pp. 1797-1804. 10.1109/TMTT.2012.2190748

McGenn, William, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Uren, Michael J., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Development of a RF waveform stress test procedure for GaN HFETs subjected to infinite VSWR sweeps. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6259725

Carrubba, V., Quay, R., Schlechtweg, M., Ambacher, O., Akmal, M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2012. Continuous-ClassF3 power amplifier mode varying simultaneously first 3 harmonic impedances. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6258343

Pelaez-Perez, A. M., Fernandez-Barciela, M., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Alonso, J. I. 2012. Application of a NVNA-based system and load-independent X-parameters in analytical circuit design assisted by an experimental search algorithm. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6258338

Smith, R. M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2012. A 40W push-pull power amplifier for high efficiency, decade bandwidth applications at microwave frequencies. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest (MTT, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6259418

Smith, Robert Martin, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2012. A Novel Formulation for High Efficiency Modes in Push-Pull Power Amplifiers Using Transmission Line Baluns. IEEE Microwave and Wireless Components Letters 22 (5) , pp. 257-259. 10.1109/LMWC.2012.2191273

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Carrubba, Vincenzo, Wright, P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2012. Wideband PA design: The "continuous" mode of operation. Presented at: Compound Semiconductor Integrated Circuit Symposium (CSICS), La Jolla, CA, USA, 14-17 October 2012. Compound Semiconductor Integrated Circuit Symposium (CSICS), 2012 IEEE. Compound Semiconductor Integrated Circuit Symposium (CSICS), 2012 IEEE. IEEE, pp. 1-4. 10.1109/CSICS.2012.6340048

Mimis, K., Morris, K. A., Beach, M. A., McGeehan, J. P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Overlapped segment piece-wise polynomial pre-distortion for the linearisation of power amplifiers in the presence of high PAPR OFDM signals. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. pp. 1-3. 10.1109/MWSYM.2012.6259543

Akmal, Muhammad, Carrubba, Vincenzo, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. An enhanced modulated waveform measurement system. Australian Journal of Electrical and Electronics Engineering 9 (4) , pp. 429-438. 10.7158/E11-033.2012.9.4

Akmal, Muhammad, Ogboi, Friday Lawrence, Yusoff, Zubaida Binti, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Carrubba, Vincenzo, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Bensmida, S., Morris, K., Beach, M., McGeehan, J., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2012. Characterization of electrical memory effects for complex multi-tone excitations using broadband active baseband load-pull. Presented at: 7th European Microwave Integrated Circuits Conference, Amsterdam, The Netherlands, 29-30 October 2012. 7th European Microwave Integrated Circuits Conference (EuMIC), 2012. Proceedings of the 7th European Microwave Integrated Circuits Conference. Picastaway, NJ: IEEE, pp. 885-888.

Pelaez-Perez, Ana M., Woodington, Simon, Fernandez-Barciela, Mónica, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Alonso, José I. 2012. Application of an NVNA-Based system and load-independent $X$ -parameters in analytical circuit design assisted by an experimental search algorithm. IEEE Transactions on Microwave Theory and Techniques 61 (1) , pp. 581-586. 10.1109/TMTT.2012.2226056

Pelaez-Perez, A. M., Alonso, J. I., Fernandez-Barciela, M. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Validation of load-independent X-parameters. Presented at: Active RF Devices, Circuits and Systems Seminar, Belfast, Northern Ireland, 12 September 2011. Active RF Devices, Circuits and Systems Seminar. IEEE, pp. 47-50. 10.1049/ic.2011.0212

Carrubba, Vincenzo, Clarke, Alan Leslie, Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2011. On the extension of the continuous class-F mode power amplifier. IEEE Transactions on Microwave Theory and Techniques 59 (5) , pp. 1294-1303. 10.1109/TMTT.2011.2117435

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2011. Waveform inspired models and the harmonic balance emulator. IEEE Microwave Magazine 12 (2) , pp. 38-54. 10.1109/MMM.2010.940101

Yusoff, Zubaida Binti, Akmal, Muhammad, Carrubba, Vincenzo, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2011. The benefit of GaN characteristics over LDMOS for linearity improvement using drain modulation in power amplifier system. Presented at: 2011 Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, Vienna, Austria, 18-19 April 2011. 2011 Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC 2011). New York: IEEE, pp. 109-112. 10.1109/INMMIC.2011.5773334

Carrubba, Vincenzo, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2011. A novel highly efficient broadband continuous class-F RFPA delivering 74% average efficiency for an octave bandwidth. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. New York: IEEE, pp. 350-353. 10.1109/MWSYM.2011.5972701

Yusoff, Zubaida Binti, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2011. Linearity improvement in RF power amplifier system using integrated Auxiliary Envelope Tracking system. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. Published in: Seigel, Peter, Remley, Kate, Tzuang, C. and Ponchak, George eds. 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. New York: IEEE, pp. 1752-1755. 10.1109/MWSYM.2011.5972769

FitzPatrick, Dominic, Saini, Randeep, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. A waveform engineering approach to the design of improved efficiency wideband MMIC amplifiers. Presented at: Wireless and Microwave Technology Conference (WAMICON), 2011 IEEE 12th Annual., Clearwater Beach, FL, USA, 18-19 April 2011. 2011 IEEE 12th Annual Wireless and Microwave Technology Conference (WAMICON), Clearwater Beach, FL, 18-19 April 2011. Los Alamitos, CA: IEEE, pp. 225-230. 10.1109/WAMICON.2011.5872859

Hashmi, Mohammad Shabi, Ghannouchi, Fadhel M., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Rawat, Karun 2011. Highly reflective load-pull. IEEE Microwave Magazine 12 (4) , pp. 96-107. 10.1109/MMM.2011.940595

Akmal, Muhammad, Carrubba, Vincenzo, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Bensmida, S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Linearity enhancement of GaN HEMTs under complex modulated excitation by optimizing the baseband impedance environment. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. Published in: Seigel, Peter, Remley, Kate, Tzuang, C. and Ponchak, George eds. 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. New York: IEEE, pp. 1747-1750. 10.1109/MWSYM.2011.5972833

Smith, Robert Martin, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2011. A design methodology for the realization of multi-decade baluns at microwave frequencies. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. Published in: Seigel, Peter, Remley, Kate, Tzuang, C. and Ponchak, George eds. 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. New York: IEEE, pp. 1204-1208. 10.1109/MWSYM.2011.5972702

Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199, Saini, Randeep, Woodington, Simon Philip, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Behavioral model analysis using simultaneous active fundamental load-pull and harmonic source-pull measurements at X-band. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International. New York: IEEE, pp. 982-986. 10.1109/MWSYM.2011.5972803

Powell, J. R., Uren, Michael John, Martin, T., McLachlan, A., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199, Saini, Randeep, Woodington, Simon Philip, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2011. GaAs X-band high efficiency (65%) broadband (30%) amplifier MMIC based on the Class B to Class J continuum. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. Published in: Seigel, Peter, Remley, Kate, Tzuang, C. and Ponchak, George eds. 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. New York: IEEE, p. 355. 10.1109/MWSYM.2011.5973350

Saini, Randeep, Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199, Canning, Timothy A. J., Woodington, Simon P., Fitzpatrick, Dominic M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. High speed non-linear device characterization and uniformity investigations at X-band frequencies exploiting behavioral models. Presented at: 2011 77th ARFTG Microwave Measurement Conference (ARFTG), Baltimore, MD, USA, 10 June 2011. Design and Measurement of Microwave Systems - Proceedings of the 2011 77th ARFTG Microwave Measurement Conference (ARFTG). Los Alamitos, CA: IEEE, 10.1109/ARFTG77.2011.6034552

Carrubba, Vincenzo, Clarke, Alan Leslie, Woodington, Simon P., McGenn, William, Akmal, Muhammad, Almuhaisen, Abdullah, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2011. High-speed device characterization using an active load-pull system and waveform engineering postulator. Presented at: 2011 77th ARFTG Microwave Measurement Conference (ARFTG), Baltimore, MD, USA, 10 June 2011. Design and Measurement of Microwave Systems - Proceedings of the 2011 77th ARFTG Microwave Measurement Conference (ARFTG). Los Alamitos, CA: IEEE, 10.1109/ARFTG77.2011.6034553

Canning, Timothy A. J., Almuhaisen, Abdullah, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Utilization of RF I-V waveform load-pull information to identify the role FET knee profile has on locating the efficiency maxima. Presented at: 2011 78th ARFTG Microwave Measurement Symposium (ARFTG), Tempe, AZ, USA, 1-2 December 2011. Proceedings of the 2011 78th ARFTG Microwave Measurement Symposium (ARFTG) - High Power RF Measurement Techniques. Los Alamitos, CA: IEEE, 10.1109/ARFTG78.2011.6183864

Saini, Randeep, Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199, Williams, T., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Interpolation and extrapolation capabilities of non-linear behavioural models. Presented at: 2011 78th ARFTG Microwave Measurement Symposium (ARFTG), Tempe, AZ, USA, 1-2 December 2011. Proceedings of the 2011 78th ARFTG Microwave Measurement Symposium (ARFTG) - High Power RF Measurement Techniques. Los Alamitos, CA: IEEE, 10.1109/ARFTG78.2011.6183865

Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2011. Waveform Engineering beyond the Safe Operating Region: Fully Active Harmonic Load Pull Measurements under Pulsed Conditions. Presented at: 2011 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS), Waikoloa, HI, USA, 16-19 October 2011. Proceedings of the 2011 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS) - INTEGRATED CIRCUITS IN GaAs, InP, SiGe, GaN and Other Compound Semiconductors. Los Alamitos, CA: IEEE, 10.1109/CSICS.2011.6062435

Carrubba, Vincenzo, Clarke, Alan Leslie, Akmal, Muhammad, Yusoff, Zubaida Binti, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Exploring the Design Space for Broadband PAs using the Novel "Continuous Inverse Class-F Mode". Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 41st European Microwave Conference (EuMC). IEEE, pp. 333-336.

Hone, T., Bensmida, S., Paynter, M., Morris, K., Beach, M., McGeehan, J., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2011. Optimized load modulation in a doherty amplifier using a current injection technique. Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 6th European Microwave Integrated Circuits Conference (EuMIC). Los Alamitos, CA: IEEE, pp. 296-299.

Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Jiangtao, S., Carrubba, Vincenzo, Yusoff, Zubaida Binti, Woodington, Simon Philip, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2011. An enhanced modulated waveform measurement system for the robust characterization of microwave devices under modulated excitation. Presented at: Microwave Integrated Circuits Conference (EuMIC), 2011 European, Manchester, 10-11 October 2011. Microwave Integrated Circuits Conference (EuMIC), 2011 European. IEEE, pp. 180-183.

Pelaez-Perez, A. M., Alonso, J. I., Fernandez-Barciela, M., Rodriguez-Testera, A., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Woodington, Simon Philip 2011. Experimental verification of analytical design equations based on X-parameters® for predicting role of series feedback. Presented at: Microwave Integrated Circuits Conference (EuMIC), 2011 European, Manchester, 10-11 October 2011. Microwave Integrated Circuits Conference (EuMIC), 2011 European. IEEE, pp. 148-151.

McGenn, William, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Powell, Jeffrey and Uren, Michael 2011. RF waveform investigation of VSWR sweeps on GaN HFETs. Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 6th European Microwave Integrated Circuits Conference (EuMIC). Los Alamitos, CA: IEEE, pp. 17-20.

Paynter, M., Bensmida, S., Morris, K. A., McGeehan, J. P., Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Beach, M. 2011. Non-linear large signal PA modelling for switching-mode operation (class-F/continuous class-F). Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 6th European Microwave Integrated Circuits Conference (EuMIC). Los Alamitos, CA: IEEE, pp. 152-155.

Almuhaisen, Abdullah, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2011. Wide band high-efficiency power amplifier design. Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 6th European Microwave Integrated Circuits Conference (EuMIC). Los Alamitos, CA: IEEE, pp. 184-187.

Pelaez, Ana, Rodriguez-Testera, A,, Mojon, O., Fernandez-Barciela, M., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Alonso, J. I. 2010. Utilization and validation of HBT nonlinear frequency domain behavioral models in the design and simulation of oscillator circuits. Presented at: 2010 European Microwave Conference (EuMC), Paris, France, 28-30 September 2010. Proceedings of the 2010 European Microwave Conference (EuMC). Los Alamitos, CA: IEEE, pp. 481-484.

Hashmi, Mohammad Shabi, Clarke, Alan Leslie, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Helaoui, M., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Ghannouchi, F. M. 2010. Agile harmonic envelope load-pull system enabling reliable and rapid device characterization. Measurement Science and Technology 21 (5) , 055109. 10.1088/0957-0233/21/5/055109

Hashmi, Mohammad Shabi, Clarke, Alan Leslie, Woodington, Simon Philip, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. An accurate calibrate-able multiharmonic active load-pull system based on the envelope load-pull concept. IEEE Transactions on Microwave Theory and Techniques 58 (3) , pp. 656-664. 10.1109/TMTT.2010.2040403

Clarke, Alan Leslie, Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2010. Investigation and analysis into device optimization for attaining efficiencies in-excess of 90% when accounting for higher harmonics. Presented at: IEEE MTT-S International Microwave Symposium, Anaheim, CA, USA, 23-28 May 2010. 2010 IEEE MTT-S International Microwave Symposium Digest (MTT 2010). New York: IEEE, pp. 1114-1117. 10.1109/MWSYM.2010.5517222

Alghanim, A., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. Effect of low frequency memory on high power 12W LDMOS transistors intermodulation distortion. Proceedings of the World Academy of Science, Engineering and Technology 63 , pp. 53-57.

Hashmi, M. S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. Impact of group delay on the load emulation in multi-tone active envelope load-pull system. Australian Journal of Electrical and Electronics Engineering 7 (1) , pp. 83-88.

Akmal, M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Bensmida, S., Woodington, S., Carrubba, V., Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. The effect of baseband impedance termination on the linearity of GaN HEMTs. Presented at: European Microwave Conference 2010, Paris, France, (561636) pp. 1046-1049.

Akmal, M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Bensmida, S., Woodlington, S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. The impact of baseband electrical memory effects on the dynamic transfer characteristics of microwave power transistors. Presented at: 2010 Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), Gothenburg, Sweden, (548011) pp. 148-151.

Hashim, Shaiful, Hashmi, Mohammad Shabi, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus. Presented at: IEEE Asia Pacific Conference on Circuits and Systems, Kuala Lumpur, Malaysia, 6-9 December 2010. Published in: Rohani, F. Z., Ahmad, S. A., Che Soh, A., Jaafar, H., Zaini, M. H. M., Sidek, M. H. M. and Shaufiq, M. eds. Proceedings of the 2010 Asia Pacific Conference on Circuit and System, 6th – 9th December 2010, Kuala Lumpur, Malaysia. Los Alamitos, CA: IEEE, pp. 1115-1118. 10.1109/APCCAS.2010.5775081

Rodriguez-Testera, A., Mojon, O., Fernandez-Barciela, M., Sanchez, E. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. Nonlinear HBT table-based model including low-frequency noise effects. Electronics letters 46 (9) , pp. 635-636. 10.1049/el.2010.2883

Mashad Nemati, Hossein, Clarke, Alan Leslie, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Fager, Christian, Grahn, Jan and Zirath, Herbert 2010. Evaluation of a GaN HEMT transistor for load- and supply-modulation applications using intrinsic waveform measurements. Presented at: IEEE MTT 2010 International Microwave Symposium, Anaheim, CA, USA, 23-28 May 2010. 2010 IEEE MTT-S International Microwave Symposium Digest (MTT 2010). Piscataway, NJ: IEEE, pp. 509-512. 10.1109/MWSYM.2010.5517696

Woodington, Simon Philip, Saini, Randeep, Williams, D., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. Behavioral model analysis of active harmonic load-pull measurements. Presented at: IEEE MTT-S International Microwave Symposium, Anaheim, CA, USA, 23-28 May 2010. Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International. New York: IEEE, pp. 1688-1691. 10.1109/MWSYM.2010.5517261

Almuhaisen, Abdullah, Wright, Peter Thomas, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2010. Novel wide band high-efficiency active harmonic injection power amplifier concept. Presented at: IEEE MTT-S International Microwave Symposium, Anaheim, CA, USA, 23-28 May 2010. 2010 IEEE MTT-S International Microwave Symposium Digest (MTT 2010). New York: IEEE, pp. 664-667. 10.1109/MWSYM.2010.5514759

FitzPatrick, D. M., Williams, T., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. Exploitation of active load-pull and DLUT models in MMIC design. Presented at: IEEE Radio Frequency Integrated Circuits Symposium, Anaheim, CA, USA, 23-25 May 2010. Proceedings of the 2010 IEEE Radio Frequency Integrated Circuits Symposium May 23-25, 2010, Anaheim, California, USA. Piscataway, NJ: IEEE, pp. 487-490. 10.1109/RFIC.2010.5477406

McGenn, W., Powell, J., Uren, M., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. RF waveform method for the determination of the safe operating area of GaN HFET's for amplifiers subjected to high output VSWR. Presented at: European Microwave Week 2010: Connecting the World, (EuMIC 2010), Paris, France, (561371) pp. 282-285.

Bensmida, S., Morris, K., Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Wright, Peter Thomas, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, McGeehan, J. and Beach, M. 2010. Generic pre-distortion of a Class-J Power amplifier. Presented at: European Microwave Conference 2010, Paris, France, (561648) pp. 1022-1025.

Carrubba, V., Clarke, A. L., Akmal, M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2010. The continuous Class-F Mode mode power amplifier. Presented at: European Microwave Conference (EuMC) 2010, Paris, France, (561630) pp. 1674-1677.

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Akmal, M., Bensmida, S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2010. Waveform engineering applied to linear-efficient PA design. Presented at: 2010 IEEE 11th Annual Wireless and Microwave Technology Conference (WAMICON 2010), Melbourne Beach, USA, 12-13 April, 2010. (546184) 10.1109/WAMICON.2010.5461847

Saini, Randeep, Woodington, Simon P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. An intelligence driven active loadpull system. Presented at: 75th ARFTG Microwave Measurement Conference: Measurement of Modulated Signals for Communications, Anaheim, USA, (549632)

Akmal, Muhammad, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Carrubba, Vincenzo, Bensmida, S., Woodington, S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Morris, K, Beach, M., McGeehan, J. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2010. Minimization of baseband electrical memory effects in GaN HEMTs using active IF load-pull. Presented at: Asia-Pacific Microwave Conference (22nd : 2010), Yokahama-shi, Japan, 7-10 December 2010. 2010 Asia-Pacific Microwave Conference proceedings : APMC 2010 : Dec. 7-10, Yokohama, Japan. Tokyo, Japan: Institute of Electronics, Information and Communication Engineers (IEICE), pp. 5-8.

Wright, P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2009. A Methodology for Realizing High Efficiency Class-J in a Linear and Broadband PA. IEEE Transactions on Microwave Theory and Techniques 57 (12) , pp. 3196-3204. 10.1109/TMTT.2009.2033295

Fitzpatrick, Dominic M., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Sheikh, Abdulla, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2009. Systematic investigation of the impact of harmonic termination in the efficiency performance of above octave bandwidth microwave amplifiers. Presented at: European Microwave Conference, 2009 (EuMC 2009), Rome, Italy, 29 September - 1 October 2009. European Microwave Week 2009 - "Science, Progress and Quality at Radiofrequencies": Conference Proceedings. London: Horizon House Publications, pp. 1445-1448.

Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Clarke, A. L., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2009. On the continuity of high efficiency modes in linear RF power amplifiers. IEEE Microwave and Wireless Components Letters 19 (10) , pp. 665-667. 10.1109/LMWC.2009.2029754

Sheikh, Abdulla, Roff, C., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Noori, B., Wood, J. and Aaen, P. H. 2009. Peak class F and inverse class F drain efficiencies using Si LDMOS in a limited bandwidth design. IEEE Microwave and Wireless Components Letters 19 (7) , pp. 473-475. 10.1109/LMWC.2009.2022138

Qi, H., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2009. Nonlinear Data Utilization: From Direct Data Lookup to Behavioral Modeling. IEEE Transactions on Microwave Theory and Techniques 57 (6) , pp. 1425-1432. 10.1109/TMTT.2009.2019996

Roff, C., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Wallis, D. J., Hilton, K. P., Maclean, J. O., Hayes, D. G., Uren, Michael John and Martin, T. 2009. Analysis of DC-RF Dispersion in AlGaN/GaN HFETs Using RF Waveform Engineering. IEEE Transactions of Electron Devices 56 (1) , pp. 13-19. 10.1109/TED.2008.2008674

Hashim, S. J., Hashmi, M. S., Williams, T., Woodington, W., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2009. Active envelope load-pull for wideband multi-tone stimulus incorporating delay compensation. Presented at: 38th European Microwave Conference, 2008 (EuMC 2008), Amsterdam, The Netherlands, 27-31 October 2008. Proceedings of the 38th European Microwave Conference, 2008 (EuMC 2008). Los Alamitos, CA: IEEE, pp. 317-320. 10.1109/EUMC.2008.4751452

Sheikh, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2009. Utilization of a measurement based CAD tool for enhanced pa design investigations. Presented at: 38th European Microwave Conference, 2008 (EuMC 2008), Amsterdam, The Netherlands, 27-31 October 2008. Proceedings of the 38th European Microwave Conference, 2008 (EuMC 2008). Los Alamitos, CA: IEEE, pp. 1671-1674. 10.1109/EUMC.2008.4751795

Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2009. Practical Waveform Engineering. IEEE Microwave Magazine 10 (7) , pp. 65-76. 10.1109/MMM.2009.934518

Hashmi, M. S., Clarke, A. L., Woodington, S. P., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2009. Electronic Multi-Harmonic Load-Pull System for Experimentally Driven Power Amplifier Design Optimization. Presented at: IEEE/MTT-S International Microwave Symposium 2009, Boston, USA, pp. 1549-1552.

Kang, I.H., Zhang, H.C., Yun, Y., Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2009. High quality factor extraction of miniaturised coupled line bandpass filter implemented using RF silicon integrated circuits. Presented at: Proceedings 39th European Microwave Conference (EuMC 2009), Rome, Italy, pp. 830-833. 10.1109/EUMC.2009.5295966

Wright, Peter Thomas, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2009. An Efficient, Linear, Broadband Class-J-Mode PA Realised Using RF. Presented at: IEEE/MTT-S International Microwave Symposium 2009, Boston, MA, USA, 7-12 June 2009. IEEE MTT-S International Microwave Symposium Digest, 2009. MTT '09. Los Alamitos, CA: IEEE, pp. 653-656. 10.1109/MWSYM.2009.5165781

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2009. RF Waveform Measurement and Engineering. Presented at: Annual IEEE Compound Semiconductor Integrated Circuit Symposium, 2009. CISC 2009, Greensboro, NC, USA, 11-14 October 2009. Integrated Circuits in GaAs, InP, SiGe, GaN, and Other Compound Semiconductors - Proceedings of the Annual IEEE Compound Semiconductor Integrated Circuit Symposium, 2009. CISC 2009. Los Alamitos, CA: IEEE, 10.1109/csics.2009.5315818

Bensmida, S., Morris, K., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Wright, Peter Thomas, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Beach, M. and McGeehan, J. 2009. Power amplifier memory-less pre-distortion for 3GPP LTE application. Presented at: European Microwave Conference, 2009 (EuMC 2009), Rome, Italy, 29 September - 1 October 2009. European Microwave Week 2009 - "Science, Progress and Quality at Radiofrequencies": Conference Proceedings. London: Horizon House Publications, pp. 1433-1436.

Alghanim, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J ORCID: https://orcid.org/0000-0002-6760-7830 2008. Sensitivity of electrical baseband memory effects to higher-order IF components for high-power LDMOS power amplifiers. Electronics Letters 44 (5) , pp. 358-359. 10.1049/el:20083348

Alghanim, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2008. Reduction of electrical baseband memory effect in high-power LDMOS devices using optimum termination for IMD3 and IMD5 using active load-pull. Presented at: IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, pp. 415-418. 10.1109/MWSYM.2008.4633191

FitzPatrick, D. M., Williams, T., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2008. Large signal device characterisation using active load-pull for improved MMIC design. Presented at: IET Seminar on RF and Microwave IC Design, London, UK, IET, pp. 1-7.

Hashmi, M. S., Hashim, S. J., Woodington, S., Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2008. Active envelope load pull system suitable for high modulation rate multi-tone applications. Presented at: Integrated Nonlinear Microwave & Millimetre-Wave Circuits 2008 Workshop (INMMIC 2008), Malaga, Spain, pp. 93-96. 10.1109/INMMIC.2008.4745724

Wright, Peter Thomas, Sheikh, Aamir, Roff, Chris, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2008. Highly efficient operation modes in GaN power transistors delivering upwards of 81% efficiency and 12W output power. Presented at: IEEE MTT-S International Microwave Symposium, Atlanta, GA, USA, 15-20 June 2008. Proceedings of the IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, 15-20 June 2008. Piscataway, NJ: Institute of Electrical and Electronics Engineers, pp. 1147-1150. 10.1109/MWSYM.2008.4633260

Jiangtao, S., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2008. A new method for the design of multi-sine excitations for the assessment of non-linear devices. Presented at: Microwave Symposium Digest, 2008 IEEE MTT-S International, Atlanta, GA, pp. 265-268. 10.1109/MWSYM.2008.463315

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Williams, T., Woodington, S., McGovern, P., Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2008. Demystifying Device related Memory Effects using Waveform Engineering and Envelope Domain Analysis. Presented at: 38th European Microwave Conference 2008 (EuMC 2008), Amsterdam, The Netherlands, pp. 753-756. 10.1109/EUMC.2008.471562

Roff, C., McGovern, P., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Johnson, M. A., Barlage, D. W., Sutton, W. and Braddock, D. 2008. Pulsed-IV and RF waveform measurements of unique high-K dielectric GaN MOSFETs. Presented at: IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS), Tel Aviv, Israel, 10.1109/COMCAS.2008.4562790

Sheikh, A., Roff, C., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Noori, Basim, Aaen, P. and Wood, J. P. 2008. Systematic waveform engineering enabling high efficiency modes of operation in Si LDMOS at both L-band and S-band frequencies. Presented at: IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, pp. 1143-1146. 10.1109/MWSYM.2008.4633259

Su, Jiangtao, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2008. A new method for the design of multi-sine excitations for the assessment of non-linear devices. Presented at: IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, pp. 265-268. 10.1109/MWSYM.2008.4633154

Williams, T., Mojon, O., Woodington, Simon Philip, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Barciela, M. F., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2008. A robust approach for comparison and validation of large signal measurement systems. Presented at: IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, pp. 257-260. 10.1109/MWSYM.2008.4633152

Woodington, Simon Philip, Williams, T., Qi, H., Williams, D., Pattison, L., Patterson, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2008. A novel measurement based method enabling rapid extraction of a RF waveform look-up table based behavioural model. Presented at: IEEE MTT-S International Microwave Symposium Digest, Atlanta, USA, pp. 1453-1456. 10.1109/MWSYM.2008.463305

Wright, Peter Thomas, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2008. GaN power transistors in narrow and wide bandwidth applications. Presented at: IET Seminar on Wideband Receivers and Components, London, UK, p. 1.

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Qi, Hao and Tasker, Paul J ORCID: https://orcid.org/0000-0002-6760-7830 2007. Novel Nonlinear Model for Rapid Waveform-based Extraction Enabling Accurate High Power PA Design. Presented at: IEEE MTT-S International Microwave Symposium Digest 2007, 10.1109/MWSYM.2007.380246

Roff, Christopher, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2007. Design Approach for Realization of Very High Efficiency Power Amplifiers. Presented at: IEEE MTT-S International Microwave Symposium Digest 2007, 10.1109/MWSYM.2007.380310

Roff, Chris, McGovern, Peter, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Balmer, R.S., Wallis, D.J., Hilton, K.P., Maclean, J.O., Hayes, D.G., Uren, M.J. and Martin, T. 2007. Detailed analysis of DC-RF dispersion in AlGaN/GaN HFETs using waveform measurements. Presented at: 1st European Microwave Integrated Circuits Conference, Manchester, UK, 10-13 Sept 2006. 2006 European Microwave Integrated Circuits Conference. IEEE, p. 43. 10.1109/EMICC.2006.282745

Gaddi, R., Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Giacomozzi, F., Margesin, B. and Gnudi, A. 2007. Large-Signal Vectorial Load - Pull Characterization of MEMS RF-Actuation. IEEE Microwave and Wireless Components Letters 17 (12) , pp. 903-905. 10.1109/LMWC.2007.908049

Alghanim, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Wiliams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2007. Investigation of electrical base-band memory effects in high power 20w LDMOS power amplifiers. Presented at: 37th European Microwave Conference, Munich, Germany, pp. 48-51. 10.1109/EUMC.2007.4405122

Rodrigues-Testera, A., Fernandez-Barciela, M., Frenandez-Manin, G., Mojon, O., Sanchez, E. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2007. Fully functional nonlinear table-based HBT model with explicit thermal feedback. IEEE Microwave and Wireless Component letters 17 (8) , pp. 601-603.

Hashmi, M. S., Hashim, S. J., Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2007. A broadband control electronics for envelope load pull system. Presented at: International Symposium on Signals, Systems and Electronics (ISSSE07), Montreal, Canada, pp. 197-200. 10.1109/ISSSE.2007.4294447

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2007. Characterisation of high power RF transistors: Waveform measurement and engineering. Presented at: Proceedings Workshop on Advances in Active Device Characterisation and Modelling for RF and Microwave, IEEE MTT-S International Microwave Symposium,

Roff, C., Sheikh, A., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Hilton, K. P., Maclean, J. O., Hayes, D. G., Uren, Michael John and Martin, T. 2007. Optimising GaN/AIGaN HFET designs for high efficiency. Presented at: 2nd European Microwave Integrated Circuits Conference (EuMIC 2007), Munich, Germany, pp. 165-168. 10.1109/EMICC.2007.4412674

Sheikh, A., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2007. The impact of system impedance on the characterisation of high power devices. Presented at: 37th European Microwave Conference (EuMC), Munich, Germany, pp. 949-952. 10.1109/EUMC.2007.4405315

Alghanim, A., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2007. Using active IF load-pull to investigate electrical base-band induced memory effects in high-power LDMOS transistors. Presented at: Asia-Pacific Microwave Conference (APMC 2007), Bangkok, Thailand, IEEE, pp. 1-4. 10.1109/APMC.2007.4554737

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2007. Waveform measurement and characterisation: The multi-tone characterisation challenge. Presented at: Proceedings of Workshop on RF power transistor and amplifier characterisation techniques, IEEE 2007 Radio and Wireless Symposium, Long Beach, USA,

Qi, Hao, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2006. A novel approach for effective import of nonlinear device characteristics into CAD for large signal power amplifier design. Presented at: IEEE MTT-S International Microwave Symposium Digest 2006, pp. 477-480. 10.1109/MWSYM.2006.249596

Aboush, Z., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Priday, J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2006. DC-50 GHz low loss thermally enhanced low cost LCP package process utilizing mico via technology. Presented at: 2006 IEEE Microwave Symposium, San Francisco, USA, pp. 961-964.

Mayer, M., Arthaber, H., Magerl, G., Kother, D., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2006. Advanced load pull systems. Presented at: The Institution of Engineering and Technology Seminar on High Efficiency Power Amplifier Design for Next Generation Wireless Applications, Cambridge, UK, pp. 27-54.

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Sheikj, A., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2006. The Design of a Gallium Nitride Doherty Amplifier using Waveform Measurements and Active Harmonic Load-Pull. Presented at: 2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, Aveiro, Portugal, pp. 26-29.

Roff, R., McGovern, P., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Balmer, R. S., Walis, D. J., Hilton, K. P., MacLean, J. O., Hayes, D. G., Uren, Michael John and Martin, T. 2006. Detailed analysis of DC-RF dispersion in AIGaN/GaN NFETs using waveform measurements. Presented at: 1st European Microwave Integrated Circuits Conference (EuMIC), Manchester, UK, pp. 43-45.

Tudor, W., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2006. Full functional 'real time' non-linear device characterization system incorporating active load control. Presented at: 36th European Microwave Conference, pp. 1610-1613.

Uren, Michael John, Hayes, D. G., Balmer, R. S., Wallis, D. J., Hilton, K. P., Maclean, J. O., Martin, T., Roff, C., McGovern, P., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2006. Control of short-channel effects in GaN/AIGaN HFETs. Presented at: 1st European Microwave Integrated Circuits Conference, Manchester, UK, pp. 65-68.

Uren, M, Hayes, D, Balmer, R, Wallis, D ORCID: https://orcid.org/0000-0002-0475-7583, Hilton, K, Maclean, J, Martin, T, Roff, C, McGovern, P, Benedikt, J ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, P ORCID: https://orcid.org/0000-0002-6760-7830 2006. Control of Short-Channel Effects in GaN/AlGaN HFETs. Presented at: 1st European Microwave Integrated Circuits Conference, Manchester, UK, 10-13 Sept 2006. 2006 European Microwave Integrated Circuits Conference. IEEE, p. 65. 10.1109/EMICC.2006.282751

Aboush, Zaid, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2005. Active harmonic load-pull system for characterising highly mismatched high power transistors. Presented at: IEEE MTT-S International Microwave Symposium Digest 2005, 2005. 10.1109/MWSYM.2005.1516920

Williams, Tudor, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2005. Experimental evaluation of an active envelope load pull architecture for high speed device characterization. Presented at: IEEE MTT-S International Microwave Symposium Digest 2005, IEEE, 10.1109/MWSYM.2005.1516980

Aboush, Z., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Priday, J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. Novel cost-efficient packaging technology for high-power LDMOS devices. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 15-18.

Aboush, Z., Jones, C., Knight, G., Sheikh, A., Lee, H., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. High power active harmonic load-pull system for characterisation of high power 100-Watt transistors. Presented at: 35th European Microwave Conference, Paris, France, , vol.1 pp. 609-612. 10.1109/EUMC.2005.1608930

Alghanim, A., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. A measurement test-set for characterisation of high power LDMOS transistors including memory effects. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 29-32.

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Hilton, P., Powell, J., Balmer, R. S., Uren, Michael John, Martin, T. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. Experimental gallium nitride microwave Doherty amplifier. IEEE Electronic Letters 41 (23) , pp. 1284-1285. 10.1049/el:20053155

McGovern, P., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Powell, J., P., Hilton K., L., Glasper J., S., Balmer R., Martin, T. and Uren, M. J. 2005. Analysis of DC-RF dispersion in AlGaN/GaN HFETs using pulsed I-V and time-domain waveform measurements. Presented at: Microwave Symposium Digest, IEEE MTT-S International, Atlanta, USA, pp. 503-506.

Qi, H., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. Direct extraction of large-signal table-based behavioural models from time-domain voltage and current waveforms. Presented at: 10th IEEE High Fequency Postgraduate Student Colloquium, Leeds, UK, pp. 25-28.

Kharji, O. A., Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. A broadband envelope load pull system. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 21-24.

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Hilton, K. P., Powell, J., Balmer, R. S., Uren, M. J., Martin, T. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2005. Characterisation of an experimental gallium nitride microwave Doherty amplifier. Presented at: 35th European Microwave Conference, Paris, France, 4-6 October 2005. 35th European Microwave Conference: conference proceedings. Horizon House,

Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2005. Application of a novel active envelope load pull architecture in large signal device characterisation. Presented at: 35th European Microwave Conference, Paris, France,

McGovern, Peter, Williams, David James, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Powell, J., Hilton, K. P., Balmer, R. S., Martin, T. and Uren, M. J. 2004. Single-tone and two-tone time-domain large signal characterization of GaN HFETs operated in class A. Presented at: IEEE MTT-S International Microwave Symposium Digest 2004, Vol 2, 2004. pp. 825-828. 10.1109/MWSYM.2004.1339092

Aboush, Z., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2004. High power harmonic active load-pull using broadband matching networks. Presented at: 9th IEEE High Frequency Postgraduate Student Colloquium, Manchester, UK, pp. 145-150.

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Haczewski, J., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2004. An automated multi-stimulus measurement system for characterising multi-device amplifiers. Presented at: 34th European Microwave Conference, Amsterdam, The Netherlands, , vol.Nov-15 pp. 435-438.

Williams, T., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2004. Novel base-band envelope load pull architecture. Presented at: 9th IEEE High Frequency Postgraduate Student Colloquium, Manchester, UK, pp. 157-161.

Williams, David J., Leckey, Jonathan and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2003. Envelope domain analysis of measured time domain voltage and current waveforms provide for improved understanding of factors effecting linearity. Presented at: IEEE MTT-S International Microwave Symposium Digest 2003, Vol 2, 2003. pp. 1411-1412. 10.1109/MWSYM.2003.1212636

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Goss, M., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2003. Single-tone optimisation of an adaptive-bias Doherty structure. Presented at: Microwave Symposium Digest, IEEE MTT-S International, Philadelphia, USA, 8-13 June 2003. Microwave Symposium Digest, IEEE MTT-S International. , vol.3 IEEE, pp. 2213-2216. 10.1109/MWSYM.2003.1210604

Williams, David J., Leckey, J. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2002. A study of the effect of envelope impedance on intermodulation asymmetry using a two-tone time domain measurement system. Presented at: 2002 IEEE MTT-S International Microwave Symposium, Seattle, WA, USA, 2-7 June 2002. 2002 IEEE MTT-S International Microwave Symposium Digest. , vol.3 Los Alamitos, CA: IEEE, pp. 1841-1844. 10.1109/MWSYM.2002.1012221

Hawkes, J .J., Coakley, W. T., Groschl, M., Benes, E., Armstrong, Helen Sian ORCID: https://orcid.org/0000-0002-8324-5374, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Nowotny, H. 2002. Single half-wavelength ultrasonic particle filter: predictions of the transfer matrix multilayer resonator model and experimental filtration results. Journal of the Acoustical Society of America 111 (3) , pp. 1259-1266. 10.1121/1.1448341

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2002. High power time-domain measurement bench for power amplifier development. Presented at: Asia-Pacific Microwave Conference, Institute of Electronics, Information and Communication Engineers (IEICE), Kyoto, Japan, pp. 303-306.

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2002. Non-linear vector network analyser – simply what is it and what can it do? Presented at: 58th ARFTG Conference, San Diego, USA,

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 2002. High-power time-domain measurement bench for power amplifier development. Presented at: 59th ARFTG Conference Digest, Seattle, USA, pp. 107-110.

Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Fernandez-Barciela, M. 2002. HBT small signal T and pi model extraction using a simple, robust and fully analytical procedure. Presented at: IEEE MTT-S International Microwave Symposium, Seattle, USA, , vol.3 pp. 2129-2132.

Gaddi, R., Pla, A. and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2001. Harmonic power generation from the non-linear output capacitance of silicon LDMOS devices. Presented at: 6th IEEE High Frequency Postgraduate Student Colloquium, Cardiff, UK, 9-10 September 2001. 6th IEEE High Frequency Postgraduate Student Colloquium (Cardiff, UK). IEEE, pp. 1-6. 10.1109/HFPSC.2001.962148

Gaddi, R., Pla, J. A., Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2001. LDMOS electro-thermal model validation from large-signal time-domain measurement. Presented at: IEEE MTT-S International Microwave Symposium Digest 2001, Phoenix, AZ, USA, 20-25 May 2001. Microwave Symposium Digest, IEEE MTT-S International (Phoenix, USA). , vol.1 pp. 399-402.

Morgan, D. G., D., Edwards G., Phillips, A. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2001. Full extraction of PHEMT state functions using time domain measurement. Presented at: IEEE MTT-S International Microwave Symposium, Phoenix, USA, , vol.2 pp. 823-826.

Morgan, D. G. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2001. Extraction of state function behaviour from large signal waveform measurements. Presented at: 6th IEEE High Frequency Postgraduate Student Colloquium, Cardiff, UK, pp. 88-93.

Williams, D. J. and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2001. Automated active source and load pull measurement system. Presented at: 6th High Frequency Postgraduate Student Colloquium, Cardiff, UK, 9-10 September 2001. Published in: Tasker, Paul and Porch, Adrian eds. 2001 High Frequency Postgraduate Student Colloquium. Piscataway, N.J: IEEE Computer Society, pp. 7-12.

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Gaddi, R., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Goss, M. 2000. High-power time-domain measurement system with active harmonic load-pull for high-efficiency base-station amplifier design. IEEE Transactions on Microwave Theory and Techniques 48 (12) , pp. 2617-2624. 10.1109/22.899021

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Gaddi, R., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Goss, M. and Zadeh, M. 2000. High power time domain measurement system with active harmonic load-pull for high efficiency base station amplifier design. Presented at: 2000 IEEE MTT-S International Microwave Symposium, Boston, MA, USA, 11-16 June 2000. Published in: Perkins, T. ed. 2000 IEEE MTT-S International Microwave Symposium Digest. , vol.3 Los Alamitos, CA: IEEE, pp. 1459-1462. 10.1109/MWSYM.2000.862249