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Number of items: 27.

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
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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
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Yuan, Weihao ORCID: https://orcid.org/0000-0001-9857-574X, Tian, Mengyue and Bell, James ORCID: https://orcid.org/0000-0002-4815-2199 2023. Implementation efficiency comparison between ANN and the Cardiff Model in ADS. Presented at: 2023 International Workshop on Integrated Nonlinear Microwave and Millimeterwave Circuits, INMMIC, 08-11 November 2023. 2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC). IEEE, pp. 1-4. 10.1109/INMMIC57329.2023.10321776

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

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
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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
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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
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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
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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

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

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

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
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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

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

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. -.

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
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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.
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Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X, Bell, James J. ORCID: https://orcid.org/0000-0002-4815-2199 and Cripps, Steve ORCID: https://orcid.org/0000-0002-2258-951X 2017. New general formulation and experimental verification of harmonic clipping contours in high-frequency power devices. IEEE Transactions on Microwave Theory and Techniques 65 (10) , pp. 3903-3909. 10.1109/TMTT.2017.2687900
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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

Bell, James Joseph ORCID: https://orcid.org/0000-0002-4815-2199 2014. Input Harmonic and Mixing Behavioural Model Analysis. PhD Thesis, Cardiff University.
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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

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

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, 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

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

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

This list was generated on Tue Oct 28 10:56:25 2025 GMT.


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