Browse by Current Cardiff authors

Sadeque, Md. Golam, Yusoff, Zubaida, Roslee, Mardeni, Hashim, Shaiful Jahari, Mohd Marzuki, Azah Syafiah, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Zubir, Farid and Al-Bawri, Samir Salem 2024. 3.3–4.3 GHz efficient continuous class-F gallium nitride power amplifier based on simplified real frequency technique and harmonic tuning. PLoS ONE 19 (8) , e0306738. 10.1371/journal.pone.0306738

Bogusz, Aleksander, Li, Wantao, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Montoro, Gabriel, Gilabert, Pere L. and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2024. Design and characterization of an MMIC current mode outphasing power amplifier. Presented at: IEEE/MTT-S International Microwave Symposium, Washington, DC, USA, 16-21 June 2024. Proceedings of IEEE/MTT-S International Microwave Symposium. IEEE, pp. 580-583. 10.1109/IMS40175.2024.10600335

Joshi, Lovleen Tina, Brousseau, Emmanuel ORCID: https://orcid.org/0000-0003-2728-3189, Morris, Trefor, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Porch, Adrian and Baillie, Les ORCID: https://orcid.org/0000-0002-8186-223X 2024. Rapid, point-of-care microwave lysis and electrochemical detection of Clostridioides difficile directly from stool samples. Bioengineering 11 (6) , 632. 10.3390/bioengineering11060632

Li, Wantao, Bogusz, Aleksander, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X, Montoro, Gabriel and Gilabert, Pere L. 2023. Performance modeling and shaping function extraction for dual-input load modulated power amplifiers. 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. 203-206. 10.1109/IMS37964.2023.10188039

Twigg, Joshua A. ORCID: https://orcid.org/0000-0002-4567-7854, Smith, Ann, Haury, Clotilde, Wilson, Melanie ORCID: https://orcid.org/0000-0002-8834-8268, Lees, Johnathon ORCID: https://orcid.org/0000-0002-6217-7552, Waters, Mark and Williams, David W. ORCID: https://orcid.org/0000-0002-7351-5131 2023. Compositional shifts within the denture-associated bacteriome in pneumonia – an analytical cross-sectional study. Journal of Medical Microbiology 72 (6) 10.1099/jmm.0.001702

Sadeque, Md. Golam, Yusoff, Zubaida, Hashim, Shaiful Jahari, Marzuki, Azah Syafiah Mohd, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and FitzPatrick, Dominic 2022. Design of wideband continuous class-f power amplifier using low pass matching technique and harmonic tuning network. IEEE Access 10 , pp. 92571-92582. 10.1109/ACCESS.2022.3202886

Prior-Jones, Michael ORCID: https://orcid.org/0000-0002-0980-4027, Bagshaw, Elizabeth A. ORCID: https://orcid.org/0000-0001-8392-1750, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Clare, Lindsay, Burrow, Stephen, Werder, Mauro A., Karlsson, Nanna B., Dahl-Jensen, Dorthe, Chudley, Thomas R., Christoffersen, Poul, Wadham, Jemma, Doyle, Samuel H. and Hubbard, Bryn 2021. Cryoegg: development and field trials of a wireless subglacial probe for deep, fast-moving ice. Journal of Glaciology 67 (264) , pp. 627-640. 10.1017/jog.2021.16

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

Ahortor, Evans K. ORCID: https://orcid.org/0000-0002-3885-1017, Malyshev, Dmitry, Williams, Catrin F. ORCID: https://orcid.org/0000-0001-8619-2581, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 and Baillie, Les ORCID: https://orcid.org/0000-0002-8186-223X 2020. The biological effect of 2.45 GHz microwaves on the viability and permeability of bacterial and yeast cells. Journal of Applied Physics 127 (204902) , IMPORTED. 10.1063/1.5145009

Prior-Jones, Michael ORCID: https://orcid.org/0000-0002-0980-4027, Bagshaw, Elizabeth ORCID: https://orcid.org/0000-0001-8392-1750, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Clare, Lindsay, Burrow, Stephen, Wadham, Jemma, Werder, Mauro A, Karlsson, Nanna B, Dahl-Jensen, Dorthe, Christoffersen, Poul and Hubbard, Bryn 2020. Cryoegg: development and field trials of a wireless subglacial probe for deep, fast-moving ice. Presented at: EGU General Assembly 2020, Online, 4-8 May 2020. Copernicus {GmbH}, 10.5194/egusphere-egu2020-10204

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

Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Alathbah, Moath, Wu, Zehao, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097 2020. Membrane supported GaN CPW structures for high-frequency and high-power applications. Presented at: 2019 IEEE Asia-Pacific Microwave Conference (APMC), Marina Bay Sands, Singapore, 10-13 December 2019. 2019 IEEE Asia-Pacific Microwave Conference (APMC). IEEE, pp. 1179-1181. 10.1109/APMC46564.2019.9038731

Alsahali, Sattam, Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Chen, Peng, Wang, Guofeng, Tasker, Paul and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Supply modulator ripple in envelope tracking systems - effects and countermeasures. Presented at: 49th European Microwave Conference (EuMC 2019), Paris, France, 01-03 October 2019. 2019 49th European Microwave Conference (EuMC). IEEE, pp. 710-713. 10.23919/EuMC.2019.8910890

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

Bogusz, Aleksander, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Watkins, Gareth and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2019. Wideband compact planar balun for applications in outphasing and push-pull amplifiers. Electronics Letters 55 (16) , pp. 912-914. 10.1049/el.2018.7915

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

Hamzah, H., Ahortor, E. ORCID: https://orcid.org/0000-0002-3885-1017, Malyshev, D., Choi, H. ORCID: https://orcid.org/0000-0003-1108-293X, Lees, J. ORCID: https://orcid.org/0000-0002-6217-7552, Baillie, L. ORCID: https://orcid.org/0000-0002-8186-223X and Porch, A. ORCID: https://orcid.org/0000-0001-5293-8883 2019. A compact microwave applicator for the rapid detection of clostridium difficile. Presented at: 2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC), Nanjing, China, 6-8 May 2019. 2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC). IEEE, 10.1109/IMBIOC.2019.8777882

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

Eblabla, A. ORCID: https://orcid.org/0000-0002-5991-892X, Li, X., Alathbah, M., Wu, Z. ORCID: https://orcid.org/0000-0001-7100-3282, Lees, J. ORCID: https://orcid.org/0000-0002-6217-7552 and Elgaid, K. ORCID: https://orcid.org/0000-0003-3265-1097 2019. Multi-channel AlGaN/GaN lateral schottky barrier diodes on low-resistivity silicon for sub-THz integrated circuits applications. IEEE Electron Device Letters 40 (6) , pp. 878-880. 10.1109/LED.2019.2912910

Williams, Catrin F. ORCID: https://orcid.org/0000-0001-8619-2581, Geroni, Gilles M., Lloyd, David ORCID: https://orcid.org/0000-0002-5656-0571, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Clark, Nicholas ORCID: https://orcid.org/0000-0002-5306-0993, Pirog, Antoine, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2019. Bioluminescence of Vibrio fischeri: bacteria respond quickly and sensitively to pulsed microwave electric (but not magnetic) fields. Journal of Biomedical Optics 24 (5) , 051412. 10.1117/1.JBO.24.5.051412

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.

Malyshev, Dmitry, Williams, Catrin F. ORCID: https://orcid.org/0000-0001-8619-2581, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Baillie, Les ORCID: https://orcid.org/0000-0002-8186-223X and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2019. Model of microwave effects on bacterial spores. Journal of Applied Physics 125 (12) , 124701. 10.1063/1.5085442

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

Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Simplified analysis of the effect of load variation in common Doherty power amplifier architectures. Presented at: 2019 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR), Orlando, FL, USA, 20-23 Jan 2019. IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR). IEEE,

Bogusz, Aleksander, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Watkins, Gavin T. and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2019. Design and characterisation of an outphasing power amplifier with balun combiner. Presented at: 2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G), Altanta, GA, USA, 15-16 August 2019. 2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G). IEEE, pp. 1-3. 10.1109/IMC-5G47857.2019.9160351

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

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

Williams, C.F. ORCID: https://orcid.org/0000-0001-8619-2581, Lees, J. ORCID: https://orcid.org/0000-0002-6217-7552, Lloyd, D. ORCID: https://orcid.org/0000-0002-5656-0571, Geroni, G.M., Jones, S., Ambala, S., Baradat, W., Comat, G., Aboubakary, A., Voisin, S. and Porch, A. ORCID: https://orcid.org/0000-0001-5293-8883 2018. Real-time microscopic observation of biological interactions with microwave fields. Presented at: International Microwave Biomedical Conference (IMBioC), Philadelphia, USA, 14-15 Jun 2018. International Microwave Biomedical Conference (IMBioC). IEEE, p. 199. 10.1109/IMBIOC.2018.8428902

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

Hamzah, Hayder, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2018. Split ring resonator with optimised sensitivity for microfluidic sensing. Sensors and Actuators A: Physical 276 , pp. 1-10. 10.1016/j.sna.2018.03.023

Hamzah, Hayder, Abduljabar, Ali, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2018. A compact microwave microfluidic sensor using a re-entrant cavity. Sensors 18 (3) , 910. 10.3390/s18030910

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.

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2017. Improving efficiency, linearity and linearisability of an asymmetric doherty power amplifier by modulating the peaking amplifier’s supply voltage. Presented at: 20th EuMW 2017, Nuremberg, Germany, 8-13 October 2017. 2017 47th European Microwave Conference (EuMC). IEEE, pp. 464-467. 10.23919/EuMC.2017.8230890

Hefford, Samuel, Parker, Nyle, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2017. Monitoring changes in microwave asorption of Ti64 powder during microwave sintering. Presented at: 2017 47th European Microwave Conference (EuMC), Nuremberg, Germany, 10-12 October 2017. 2017 47th European Microwave Conference (EuMC). IEEE, pp. 927-929. 10.23919/EuMC.2017.8230997

Zhou, Hengyi, Pal, Arpan, Mehta, Amit, Nagasundaram, Elango, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Mirshekar-Syahkal, Dariush 2017. Power amplifier and antenna integration utilizing capacitively coupled feeding mechanism. Presented at: International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, USA, 9-14 July 2017. 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, pp. 2355-2356. 10.1109/APUSNCURSINRSM.2017.8073220

Abduljabar, Ali A., Clark, Nicholas ORCID: https://orcid.org/0000-0002-5306-0993, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2017. Dual mode microwave microfluidic sensor for temperature variant liquid characterization. IEEE Transactions on Microwave Theory and Techniques 65 (7) , 2572 - 2582. 10.1109/TMTT.2016.2647249

Pal, Arpan, Zhou, Hengyi, Mehta, Amit, Nagasundaram, Elango, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Mirshekar-Syahkal, Dariush 2017. Co-design of an antenna-power amplifier RF front-end block without matching network for 2.4 GHz WiFi application. Presented at: 2017 IEEE Radio and Wireless Symposium (RWS), Phoenix, AZ, USA, 15-18 January 2017. 2017 IEEE Radio and Wireless Symposium (RWS). 2017 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS). IEEE, pp. 201-203. 10.1109/RWS.2017.7885987

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

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

Yusoff, Zubaida, Annuar, Fatahiyah Mohd, Kung, Fabian, Hashim, Shaiful Jahari, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X 2016. The effect of tracking generator efficiency to overall RF power amplifier system efficiency. Presented at: 2016 IEEE International Conference on Semiconductor Electronics (ICSE), 17-19 August 2016. 2016 IEEE International Conference on Semiconductor Electronics (ICSE). IEEE, pp. 344-347. 10.1109/SMELEC.2016.7573662

Williams, Catrin Ffion ORCID: https://orcid.org/0000-0001-8619-2581, Lloyd, David ORCID: https://orcid.org/0000-0002-5656-0571, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Pirog, Antoine, Geroni, Gilles M., Pastre, Jordan, Kriegel, Valentin and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2016. What the deep sea can tell us about microwaves. Presented at: International Microwave Symposium IMS, San Francisco, California, 22-27 May 2016. Microwave Symposium (IMS), 2016 IEEE MTT-S International. IEEE, 10.1109/MWSYM.2016.7540432

Williams, Catrin F. ORCID: https://orcid.org/0000-0001-8619-2581, Geroni, Gilles M., Pirog, Antoine, Lloyd, David ORCID: https://orcid.org/0000-0002-5656-0571, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2016. The separated electric and magnetic field responses of luminescent bacteria exposed to pulsed microwave irradiation. Applied Physics Letters 109 (9) , 093701. 10.1063/1.4961970

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

Yusoff, Zubaida, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Chaudhary, Muhammad Akmal and Cripps, Steve C. 2016. Ferrite toroidal core with a trifilar wound RF broadband transformer design for tracking generators in wideband code division multiple access envelope tracking RFPA systems. Journal of Electromagnetic Waves and Applications 30 (5) , pp. 599-611. 10.1080/09205071.2016.1138899

Imtiaz, Azeem, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X and Joshi, Lovleen Tina 2015. An integrated continuous class-F-1 mode power amplifier design approach for microwave enhanced portable diagnostic applications. IEEE Transactions on Microwave Theory and Techniques 63 (10) , pp. 3007-3015. 10.1109/TMTT.2015.2472417

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

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

Imtiaz, Azeem, Hartley, Jon, Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2015. A high power high efficiency integrated solid-state microwave heating structure for portable diagnostic healthcare applications. Presented at: IEEE MTT-S 2014 IEEE International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, London, 8-10 December 2014. 2014 IEEE MTT-S international microwave workshop series on RF and wireless technologies for biomedical and healthcare applications (IMWS-Bio). IEEE, pp. 1-3. 10.1109/IMWS-BIO.2014.7032437

Hartley, Jon, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Cuenca, Jerome ORCID: https://orcid.org/0000-0003-1370-1167 and Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X 2014. Assessment of machine oil quality by microwave cavity perturbation method. Presented at: 2014 International Symposium on Information Technology Convergence (ISITC 2014), Jeonju, Republic of Korea, 30-31 October 2014.

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

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

Kural, Aleksander, Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099, Holford, Karen Margaret ORCID: https://orcid.org/0000-0002-3239-4660, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Naylon, Alexander Jack, Paget, Christophe and Featherston, Carol Ann ORCID: https://orcid.org/0000-0001-7548-2882 2013. Design and characterization of an ultrasonic lamb-wave power delivery system. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 60 (6) , pp. 1134-1140. 10.1109/TUFFC.2013.2676

Morgan, Alex John ORCID: https://orcid.org/0000-0003-1975-1544, Naylon, Alexander Jack, Gooding, Sarah Victoria, John, Christopher David, Squires, Oliver Leslie, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Barrow, David Anthony ORCID: https://orcid.org/0000-0003-2096-7262 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2013. Efficient microwave heating of microfluidic systems. Sensors and Actuators B: Chemical 181 , pp. 904-909. 10.1016/j.snb.2013.02.099

Schmid, Ulrich, Thangaraj, K., Elefsiniotis, A., Aslam, S., Becker, Th., Schmid, U., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Featherston, Carol Ann ORCID: https://orcid.org/0000-0001-7548-2882, Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099, Sánchez de Rojas Aldavero, José Luis and Leester-Schaedel, Monika 2013. Hybrid energy storage system for wireless sensor node powered by aircraft specific thermoelectric energy harvesting. Presented at: Smart Sensors, Actuators, and MEMS VI, Grenoble, France, 24 April 2013. Proc. SPIE 8763, Smart Sensors, Actuators, and MEMS VI. , vol.8763 SPIE, p. 876307. 10.1117/12.2017691

Featherston, Carol ORCID: https://orcid.org/0000-0001-7548-2882, Holford, Karen Margaret ORCID: https://orcid.org/0000-0002-3239-4660, Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Eaton, Mark Jonathan ORCID: https://orcid.org/0000-0002-7388-6522 and Pearson, Matthew R. ORCID: https://orcid.org/0000-0003-1625-3611 2013. An autonomous structural health monitoring solution. Presented at: Microtechnologies 2013, Grenoble, France, 24-26 April 2013. Proc. SPIE 8763, Smart Sensors, Actuators, and MEMS VI. SPIE Microtechnologies. Society of Photo-Optical Instrumentation Engineers (SPIE), p. 876302. 10.1117/12.2018401

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

Thangaraj, Karthik, Elefsiniots, A., Becker, Th., Schmid, U., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Featherston, Carol Ann ORCID: https://orcid.org/0000-0001-7548-2882 and Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099 2013. Energy storage options for wireless sensors powered by aircraft specific thermoelectric energy harvester. Microsystem Technologies 20 (4-5) , pp. 701-707. 10.1007/s00542-013-2009-3

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

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.

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

Pearson, Matthew ORCID: https://orcid.org/0000-0003-1625-3611, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Featherston, Carol ORCID: https://orcid.org/0000-0001-7548-2882 and Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099 2013. 9th international conference on advances in experimental mechanics. Presented at: 9th International Conference on Advances in Experimental Mechanics, Cardiff, Wales, 3 - 5 September 2013.

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.

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

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

Pullin, Rhys ORCID: https://orcid.org/0000-0002-2853-6099, Eaton, Mark Jonathan ORCID: https://orcid.org/0000-0002-7388-6522, Pearson, Matthew R. ORCID: https://orcid.org/0000-0003-1625-3611, Featherston, Carol Ann ORCID: https://orcid.org/0000-0001-7548-2882, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Naylon, Alexander Jack, Kural, Aleksander, Simpson, David J. and Holford, Karen Margaret ORCID: https://orcid.org/0000-0002-3239-4660 2012. On the Development of a Damage Detection System using Macro-fibre Composite Sensors. Journal of Physics. Conference Series 382 (1) , 012049. 10.1088/1742-6596/382/1/012049

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

Arnold, M., Featherston, Carol Ann ORCID: https://orcid.org/0000-0001-7548-2882, Pearson, Matthew R. ORCID: https://orcid.org/0000-0003-1625-3611, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Kural, Aleksander 2012. Energy management systems for energy harvesting in structural health monitoring applications. Key Engineering Materials 518 , pp. 137-153. 10.4028/www.scientific.net/KEM.518.137

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.

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

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

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

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

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.

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.

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

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.

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

Naylon, Alexander Jack, Gooding, S., John, C., Morgan, Alex John ORCID: https://orcid.org/0000-0003-1975-1544, Squires, O., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Barrow, David Anthony ORCID: https://orcid.org/0000-0003-2096-7262 and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2010. Efficient Microwave heating and dielectric characterization of microfluidic systems. Presented at: Proceedings of MicroTAS 2010, Groningen, The Netherlands, pp. 2092-2094.

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, 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

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.

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

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.

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

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.

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

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

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.

Aubrey, A. J., Hicks, Yulia Alexandrovna ORCID: https://orcid.org/0000-0002-7179-4587, Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Chambers, J. A 2006. Using the bi-modality of speech for convolutive frequency domain blind source separation. Presented at: Proceedings of IMA 7th International Conference on Mathematics in Signal Processing, Cirencester, UK,

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.

Lees, Jonathan. ORCID: https://orcid.org/0000-0002-6217-7552 2006. Doherty amplifier structures for modern microwave communication systems. PhD Thesis, Cardiff University.

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

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

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

Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bunz, B., Gaquiere, C., Ducatteau, D., Marquez-Sequra, E., Martin-Guerrero, T. M. and Barel, A. 2005. A comparison of load-pull measurement results of a 4W Phemt involving five European laboratories. Presented at: European Gallium Arsenide and Other Semiconductor Application Symposium, Paris, France, 3-4 October, 2005. Proceedings of the European Gallium Arsenide and Other Semiconductor Application Symposium Paris, France,3-4 October, 2005. IEEE, pp. 321-324.

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,

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.

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