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Number of items: 174.

Moure, M. Rocio, Fernandez-Barciela, Monica, Casbon, Michael A. and Tasker, Paul J. 2017. Broadband non-linear FET behavioral model defined in the admittance domain. Presented at: 11th European Microwave Integrated Circuits Conference (EuMIC), London, UK, 3-4 October 2016. 2016 11th European Microwave Integrated Circuits Conference (EuMIC 2016). Institute of Electrical and Electronics Engineers (IEEE), pp. 281-284. 10.1109/EuMIC.2016.7777545

Pooth, A., Bergsten, J., Rorsman, N., Hirshy, Hassan, Perks, Richard, Tasker, Paul, Martin, T., Webster, R., Cherns, D., Uren, M. and Kuball, M. 2017. Morphological and electrical comparison of Ti and Ta based ohmic contacts for AlGaN/GaN-on-SiC HFETs. Microelectronics Reliability 68 , pp. 2-4. 10.1016/j.microrel.2016.11.002
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Chaudhary, Muhammad Akmal, Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 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

Casbon, Michael, Brazzini, Tommaso, Tasker, Paul J., Uren, Michael and Kuball, Martin 2016. Simultaneous measurement of optical and RF behavior under CW and pulsed fully active harmonic load-pull. Presented at: ARFTG 87th Conference: Measurements for Emerging Communications Technologies, San Francisco, CA, USA, 27 May 2016.
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Chaudhary, Muhammad Akmal, Memon, Zulifqar Ali, Yusoff, Zubaida, Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 2016. 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. Microwave Symposium (MMS), 2016 16th Mediterranean. p. 1. 10.1109/MMS.2016.7803811

Dong, Shi-Wei, Tasker, Paul J., Wang, Guofeng and Lees, Jonathan 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. Wireless Symposium (IWS), 2016 IEEE MTT-S International. IEEE, p. 1. 10.1109/IEEE-IWS.2016.7585473

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

Brazzini, Tommaso, Casbon, Michael A., Sun, Huarui, Uren, Michael J., Lees, Jonathan, Tasker, Paul J., 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
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Hashmi, Mohammad S., Ghannouchi, Fadhel M. and Tasker, Paul J. 2015. High frequency waveform engineering and its applications: tutorial 54. IEEE Instrumentation & Measurement Magazine 18 (3) , pp. 44-50. 10.1109/MIM.2015.7108400

Brazzini, Tommaso, Casbon, Michael A., Sun, Huarui, Uren, Michael J., Lees, Jonathan, Tasker, Paul J., Jung, Helmut, Blanck, Herve and Kuball, Martin 2015. Electroluminescence of hot electrons in AlGaN/GaN high-electron-mobility transistors under radio frequency operation. Applied Physics Letters 106 (21) , 213502. 10.1063/1.4921848

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

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

Mokhti, Z. A., Lees, Jonathan, Tasker, Paul J. 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

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

A Mokhti, Zulhazmi Bin, Tasker, Paul J. and Lees, Jonathan 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

Canning, Timothy A. J., Tasker, Paul J. and Cripps, Steven Charles 2014. Continuous mode power amplifier design using harmonic clipping contours: theory and practice. IEEE Transactions on Microwave Theory and Techniques 62 (1) , pp. 100-110. 10.1109/TMTT.2013.2292675

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

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

Yang, F., Lees, Jonathan, Choi, Heungjae, Yu, H. and Tasker, Paul J. 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. and Lees, Jonathan 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 and Tasker, Paul J. 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., Akmal, M., Lees, Jonathan, Benedikt, Johannes, 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). IEEE, pp. 1305-1308. 10.1109/EuMC.2014.6986683

Mokhti, Z. A., Tasker, Paul J. and Lees, Jonathan 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. and Lees, Jonathan 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., Mohkti, Z., Lees, Jonathan, Benedikt, Johannes, 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

Koh, M., Bell, James Joseph, Williams, D., Patterson, A., Lees, Jonathan, Root, D. E. and Tasker, Paul J. 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

Casbon, Michael A. and Tasker, Paul J. 2013. Filter-less diplexer enables active harmonic load-pull at ka band. Presented at: 81st ARFTG Microwave Measurement Conference, Seattle, Washington, USA, 7 June 2013. Microwave Measurement Conference (ARFTG), 2013 81st ARFTG. Picastaway: IEEE, pp. 1-4. 10.1109/ARFTG.2013.6579028

Ogboi, Friday Lawrence, Tasker, Paul J., Akmal, Muhammad, Lees, Jonathan, Benedikt, Johannes, 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. pp. 684-687.

Canning, Timothy A. J., Tasker, Paul J. and Cripps, Stephen Charles 2013. Waveform evidence of gate harmonic short circuit benefits for high efficiency x-band power amplifiers. IEEE Microwave and Wireless Components Letters 23 (8) , pp. 439-441. 10.1109/LMWC.2013.2272317

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

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

Chaudhary, M. A, Memon, Z. A., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 2013. Inverse active load-pull in an inverse Doherty amplifier. Presented at: 2013 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, Santa Clara, CA, USA, 20 Jauary 2013. Power Amplifiers for Wireless and Radio Applications (PAWR), 2013 IEEE Topical Conference on. IEEE, pp. 4-6. 10.1109/PAWR.2013.6490170

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

Yusoff, Zubaida, Lees, Jonathan, Chaudhary, Muhammad Akmal, Carrubba, Vincenzo, Choi, Heungjae, Tasker, Paul J. and Cripps, Stephen Charles 2013. Simple and low-cost tracking generator design in envelope tracking radio frequency power amplifier system for WCDMA applications. IET Microwaves, Antennas & Propagation 7 (10) , pp. 802-808. 10.1049/iet-map.2013.0091

Koh, M., Bell, James J., Williams, D., Patterson, A., Wohlmuth, W., Lees, Jonathan and Tasker, Paul J. 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., Saini, R. S., Bell, James J., Williams, T. and Lees, Jonathan 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

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

McGenn, William, Uren, Michael J., Benedikt, Johannes and Tasker, Paul J. 2012. Development of an RF IV waveform based stress test procedure for use on GaN HFETs. Microelectronics Reliability 52 (12) , pp. 2880-2883. 10.1016/j.microrel.2012.09.007

Bensmida, Souheil, Morris, Kevin A., Beach, Mark, McGeehan, Joe P., Lees, Jonathan, Choi, Heungjae, Akmal, Muhammad, Benedikt, Johannes and Tasker, Paul J. 2012. Nonlinear envelope tracking for efficiency optimization of power amplifiers. Presented at: 7th European Microwave Integrated Circuits Conference (EuMIC) 2012, Amsterdam, The Netherlands, 29-30 October 2012. 7th European Microwave Integrated Circuits Conference (EuMIC), 2012. Picastaway, NJ: IEEE, pp. 480-483.

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

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

Carrubba, Vincenzo, Akmal, Muhammad, Quay, Rüdiger, Lees, Jonathan, Benedikt, Johannes, Cripps, Stephen Charles and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 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, Lees, Jonathan, Uren, Michael J., Benedikt, Johannes and Tasker, Paul J. 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, Benedikt, Johannes, Tasker, Paul J. and Cripps, Stephen Charles 2012. Continuous-ClassF3 power amplifier mode varying simultaneously first 3 harmonic impedances. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012. Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE, pp. 1-3. 10.1109/MWSYM.2012.6258343

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

Smith, R. M., Lees, Jonathan, Tasker, Paul J., Benedikt, Johannes and Cripps, Stephen Charles 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, Tasker, Paul J., Benedikt, Johannes and Cripps, Stephen Charles 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

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

Tasker, Paul J., Carrubba, Vincenzo, Wright, P., Lees, Jonathan, Benedikt, Johannes and Cripps, Stephen Charles 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. IEEE, pp. 1-4. 10.1109/CSICS.2012.6340048

Mimis, K., Morris, K. A., Beach, M. A., McGeehan, J. P., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 2012. An enhanced modulated waveform measurement system. Australian Journal of Electrical and Electronics Engineering 9 (4) , pp. 429-438. 10.7158/E11-033.2012.9.4

Akmal, Muhammad, Ogboi, Friday Lawrence, Yusoff, Zubaida Binti, Lees, Jonathan, Carrubba, Vincenzo, Choi, Heungjae, Bensmida, S., Morris, K., Beach, M., McGeehan, J., Benedikt, Johannes and Tasker, Paul J. 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. Picastaway, NJ: IEEE, pp. 885-888.

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

Carrubba, Vincenzo, Clarke, Alan Leslie, Akmal, Muhammad, Lees, Jonathan, Benedikt, Johannes, Tasker, Paul J. and Cripps, Stephen Charles 2011. On the extension of the continuous class-F mode power amplifier. IEEE Transactions on Microwave Theory and Techniques 59 (5) , pp. 1294-1303. 10.1109/TMTT.2011.2117435

Tasker, Paul J. and Benedikt, Johannes 2011. Waveform inspired models and the harmonic balance emulator. IEEE Microwave Magazine 12 (2) , pp. 38-54. 10.1109/MMM.2010.940101

Paynter, M., Bensmida, S., Morris, K. A., McGeehan, J. P., Akmal, Muhammad, Lees, Jonathan, Benedikt, Johannes, Tasker, Paul J. 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.

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

Hashmi, Mohammad Shabi, Ghannouchi, Fadhel M., Tasker, Paul J. and Rawat, Karun 2011. Highly reflective load-pull. IEEE Microwave Magazine 12 (4) , pp. 96-107. 10.1109/MMM.2011.940595

Yusoff, Zubaida Binti, Akmal, Muhammad, Carrubba, Vincenzo, Lees, Jonathan, Benedikt, Johannes, Tasker, Paul J. and Cripps, Stephen Charles 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

Akmal, Muhammad, Carrubba, Vincenzo, Lees, Jonathan, Bensmida, S., Benedikt, Johannes, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul J. 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, Tasker, Paul J., Benedikt, Johannes and Lees, Jonathan 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, Saini, Randeep, Woodington, Simon Philip, Lees, Jonathan, Benedikt, Johannes, Cripps, Stephen Charles and Tasker, Paul J. 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

Carrubba, Vincenzo, Lees, Jonathan, Benedikt, Johannes, Tasker, Paul J. and Cripps, Stephen Charles 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, Benedikt, Johannes, Tasker, Paul J. and Cripps, Stephen Charles 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

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

Saini, Randeep, Bell, James Joseph, Canning, Timothy A. J., Woodington, Simon P., Fitzpatrick, Dominic M., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 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, Cripps, Stephen Charles, Tasker, Paul J. and Benedikt, Johannes 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, Benedikt, Johannes, Cripps, Stephen Charles and Tasker, Paul J. 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, Williams, T., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 2011. Interpolation and extrapolation capabilities of non-linear behavioural models. Presented at: 2011 78th ARFTG Microwave Measurement Symposium (ARFTG), Tempe, AZ, USA, 1-2 December 2011. Proceedings of the 2011 78th ARFTG Microwave Measurement Symposium (ARFTG) - High Power RF Measurement Techniques. Los Alamitos, CA: IEEE, 10.1109/ARFTG78.2011.6183865

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

Carrubba, Vincenzo, Clarke, Alan Leslie, Akmal, Muhammad, Yusoff, Zubaida Binti, Lees, Jonathan, Benedikt, Johannes, Cripps, Stephen Charles and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 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, Jiangtao, S., Carrubba, Vincenzo, Yusoff, Zubaida Binti, Woodington, Simon Philip, Benedikt, Johannes, Tasker, Paul J., Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2011. An enhanced modulated waveform measurement system for the robust characterization of microwave devices under modulated excitation. Presented at: Microwave Integrated Circuits Conference (EuMIC), 2011 European, Manchester, 10-11 October 2011. Microwave Integrated Circuits Conference (EuMIC), 2011 European. IEEE, pp. 180-183.

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

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

Almuhaisen, Abdullah, Lees, Jonathan, Cripps, Stephen Charles, Tasker, Paul J. and Benedikt, Johannes 2011. Wide band high-efficiency power amplifier design. Presented at: 6th European Microwave Integrated Circuits Conference (EuMIC) 2011, Manchester, UK, 10-11 October 2011. Proceedings of the 6th European Microwave Integrated Circuits Conference (EuMIC). Los Alamitos, CA: IEEE, pp. 184-187.

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

Hashmi, Mohammad Shabi, Clarke, Alan Leslie, Lees, Jonathan, Helaoui, M., Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 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

Alghanim, A., Benedikt, Johannes and Tasker, Paul 2010. Effect of low frequency memory on high power 12W LDMOS transistors intermodulation distortion. Proceedings of the World Academy of Science, Engineering and Technology 63 , pp. 53-57.

Hashmi, M. S., Benedikt, Johannes and Tasker, Paul 2010. Impact of group delay on the load emulation in multi-tone active envelope load-pull system. Australian Journal of Electrical and Electronics Engineering 7 (1) , pp. 83-88.

Akmal, M., Lees, Jonathan, Bensmida, S., Woodington, S., Carrubba, V., Cripps, Stephen Charles, Benedikt, Johannes, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul 2010. The effect of baseband impedance termination on the linearity of GaN HEMTs. Presented at: European Microwave Conference 2010, Paris, France, , vol. 561636. pp. 1046-1049.

Akmal, M., Lees, Jonathan, Bensmida, S., Woodlington, S., Benedikt, Johannes, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul 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, , vol. 548011. pp. 148-151.

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

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

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

Clarke, Alan Leslie, Akmal, Muhammad, Lees, Jonathan, Tasker, Paul J. and Benedikt, Johannes 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

Woodington, Simon Philip, Saini, Randeep, Williams, D., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 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, Tasker, Paul J., Cripps, Stephen Charles and Benedikt, Johannes 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, Benedikt, Johannes, Cripps, Stephen Charles and Tasker, Paul 2010. Exploitation of active load-pull and DLUT models in MMIC design. Presented at: IEEE Radio Frequency Integrated Circuits Symposium, Anaheim, CA, USA, 23-25 May 2010. Proceedings of the 2010 IEEE Radio Frequency Integrated Circuits Symposium May 23-25, 2010, Anaheim, California, USA. Piscataway, NJ: IEEE, pp. 487-490. 10.1109/RFIC.2010.5477406

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

Bensmida, S., Morris, K., Akmal, Muhammad, Lees, Jonathan, Wright, Peter Thomas, Benedikt, Johannes, Tasker, Paul J., McGeehan, J. and Beach, M. 2010. Generic pre-distortion of a Class-J Power amplifier. Presented at: European Microwave Conference 2010, Paris, France, , vol. 561648. pp. 1022-1025.

Carrubba, V., Clarke, A. L., Akmal, M., Lees, Jonathan, Benedikt, Johannes, Tasker, Paul and Cripps, Stephen Charles 2010. The continuous Class-F Mode mode power amplifier. Presented at: European Microwave Conference (EuMC) 2010, Paris, France, , vol. 561630. pp. 1674-1677.

Lees, Jonathan, Akmal, M., Bensmida, S., Benedikt, Johannes, Morris, K., Beach, M., McGeehan, J. and Tasker, Paul 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. , vol. 546184. 10.1109/WAMICON.2010.5461847

Saini, Randeep, Woodington, Simon P., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 2010. An intelligence driven active loadpull system. Presented at: 75th ARFTG Microwave Measurement Conference: Measurement of Modulated Signals for Communications, Anaheim, USA, , vol. 549632.

Akmal, Muhammad, Lees, Jonathan, Carrubba, Vincenzo, Bensmida, S., Woodington, S., Benedikt, Johannes, Morris, K, Beach, M., McGeehan, J. and Tasker, Paul J. 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, Benedikt, Johannes, Tasker, Paul and Cripps, Stephen Charles 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, Sheikh, Abdulla, Benedikt, Johannes and Tasker, Paul J. 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, Tasker, Paul, Clarke, A. L., Lees, Jonathan and Benedikt, Johannes 2009. On the continuity of high efficiency modes in linear RF power amplifiers. IEEE Microwave and Wireless Components Letters 19 (10) , pp. 665-667. 10.1109/LMWC.2009.2029754

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

Qi, H., Benedikt, Johannes and Tasker, Paul 2009. Nonlinear Data Utilization: From Direct Data Lookup to Behavioral Modeling. IEEE Transactions on Microwave Theory and Techniques 57 (6) , pp. 1425-1432. 10.1109/TMTT.2009.2019996

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

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

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

Tasker, Paul 2009. Practical Waveform Engineering. IEEE Microwave Magazine 10 (7) , pp. 65-76. 10.1109/MMM.2009.934518

Hashmi, M. S., Clarke, A. L., Woodington, S. P., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul 2009. Electronic Multi-Harmonic Load-Pull System for Experimentally Driven Power Amplifier Design Optimization. Presented at: IEEE/MTT-S International Microwave Symposium 2009, Boston, USA, pp. 1549-1552.

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

Wright, Peter Thomas, Lees, Jonathan, Tasker, Paul J., Benedikt, Johannes and Cripps, Stephen Charles 2009. An Efficient, Linear, Broadband Class-J-Mode PA Realised Using RF. Presented at: IEEE/MTT-S International Microwave Symposium 2009, Boston, MA, USA, 7-12 June 2009. IEEE MTT-S International Microwave Symposium Digest, 2009. MTT '09. Los Alamitos, CA: IEEE, pp. 653-656. 10.1109/MWSYM.2009.5165781

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

Bensmida, S., Morris, K., Lees, Jonathan, Wright, Peter Thomas, Benedikt, Johannes, Tasker, Paul J., 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, Williams, T., Benedikt, Johannes and Tasker, Paul J 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, Williams, T., Benedikt, Johannes and Tasker, Paul 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, Benedikt, Johannes and Tasker, Paul 2008. Large signal device characterisation using active load-pull for improved MMIC design. Presented at: IET Seminar on RF and Microwave IC Design, London, UK, IET, pp. 1-7.

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

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

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

Lees, Jonathan, Williams, T., Woodington, S., McGovern, P., Cripps, Stephen Charles, Benedikt, Johannes and Tasker, Paul 2008. Demystifying Device related Memory Effects using Waveform Engineering and Envelope Domain Analysis. Presented at: 38th European Microwave Conference 2008 (EuMC 2008), Amsterdam, The Netherlands, pp. 753-756. 10.1109/EUMC.2008.471562

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

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

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

Williams, T., Mojon, O., Woodington, Simon Philip, Lees, Jonathan, Barciela, M. F., Benedikt, Johannes and Tasker, Paul J. 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, Benedikt, Johannes and Tasker, Paul J. 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, Tasker, Paul J. and Benedikt, Johannes 2008. GaN power transistors in narrow and wide bandwidth applications. Presented at: IET Seminar on Wideband Receivers and Components, London, UK, p. 1.

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

Roff, Christopher, Benedikt, Johannes and Tasker, Paul J. 2007. Design Approach for Realization of Very High Efficiency Power Amplifiers. Presented at: IEEE MTT-S International Microwave Symposium Digest 2007, 10.1109/MWSYM.2007.380310

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

Alghanim, A., Lees, Jonathan, Wiliams, T., Benedikt, Johannes and Tasker, Paul 2007. Investigation of electrical base-band memory effects in high power 20w LDMOS power amplifiers. Presented at: 37th European Microwave Conference, Munich, Germany, pp. 48-51. 10.1109/EUMC.2007.4405122

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

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

Benedikt, Johannes and Tasker, Paul 2007. Characterisation of high power RF transistors: Waveform measurement and engineering. Presented at: Proceedings Workshop on Advances in Active Device Characterisation and Modelling for RF and Microwave, IEEE MTT-S International Microwave Symposium,

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

Sheikh, A., Tasker, Paul J., Lees, Jonathan and Benedikt, Johannes 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, Williams, T., Benedikt, Johannes and Tasker, Paul J. 2007. Using active IF load-pull to investigate electrical base-band induced memory effects in high-power LDMOS transistors. Presented at: Asia-Pacific Microwave Conference (APMC 2007), Bangkok, Thailand, IEEE, pp. 1-4. 10.1109/APMC.2007.4554737

Tasker, Paul J. and Benedikt, Johannes 2007. Waveform measurement and characterisation: The multi-tone characterisation challenge. Presented at: Proceedings of Workshop on RF power transistor and amplifier characterisation techniques, IEEE 2007 Radio and Wireless Symposium, Long Beach, USA,

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

Aboush, Z., Benedikt, Johannes, Priday, J. and Tasker, Paul 2006. DC-50 GHz low loss thermally enhanced low cost LCP package process utilizing mico via technology. Presented at: 2006 IEEE Microwave Symposium, San Francisco, USA, pp. 961-964.

Mayer, M., Arthaber, H., Magerl, G., Kother, D., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul 2006. Advanced load pull systems. Presented at: The Institution of Engineering and Technology Seminar on High Efficiency Power Amplifier Design for Next Generation Wireless Applications, Cambridge, UK, pp. 27-54.

Lees, Jonathan, Sheikj, A., Benedikt, Johannes and Tasker, Paul 2006. The Design of a Gallium Nitride Doherty Amplifier using Waveform Measurements and Active Harmonic Load-Pull. Presented at: 2006 International Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, Aveiro, Portugal, pp. 26-29.

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

Tudor, W., Benedikt, Johannes and Tasker, Paul J. 2006. Full functional 'real time' non-linear device characterization system incorporating active load control. Presented at: 36th European Microwave Conference, pp. 1610-1613.

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

Aboush, Zaid, Lees, Jonathan, Benedikt, Johannes and Tasker, Paul J. 2005. Active harmonic load-pull system for characterising highly mismatched high power transistors. Presented at: IEEE MTT-S International Microwave Symposium Digest 2005, 2005. 10.1109/MWSYM.2005.1516920

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

Aboush, Z., Benedikt, Johannes, Priday, J. and Tasker, Paul 2005. Novel cost-efficient packaging technology for high-power LDMOS devices. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 15-18.

Aboush, Z., Jones, C., Knight, G., Sheikh, A., Lee, H., Lees, Jonathan, Benedikt, Johannes and Tasker, Paul 2005. High power active harmonic load-pull system for characterisation of high power 100-Watt transistors. Presented at: 35th European Microwave Conference, Paris, France, pp. 609-612. 10.1109/EUMC.2005.1608930

Alghanim, A., Benedikt, Johannes and Tasker, Paul 2005. A measurement test-set for characterisation of high power LDMOS transistors including memory effects. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 29-32.

Lees, Jonathan, Benedikt, Johannes, Hilton, P., Powell, J., Balmer, R. S., Uren, Michael John, Martin, T. and Tasker, Paul 2005. Experimental gallium nitride microwave Doherty amplifier. IEEE Electronic Letters 41 (23) , pp. 1284-1285. 10.1049/el:20053155

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

Qi, H., Benedikt, Johannes and Tasker, Paul 2005. Direct extraction of large-signal table-based behavioural models from time-domain voltage and current waveforms. Presented at: 10th IEEE High Fequency Postgraduate Student Colloquium, Leeds, UK, pp. 25-28.

Kharji, O. A., Williams, T., Benedikt, Johannes and Tasker, Paul 2005. A broadband envelope load pull system. Presented at: 10th IEEE High Frequency Postgraduate Student Colloquium, Leeds, UK, pp. 21-24.

Lees, Jonathan, Benedikt, Johannes, Hilton, K. P., Powell, J., Balmer, R. S., Uren, M. J., Martin, T. and Tasker, Paul 2005. Characterisation of an experimental gallium nitride microwave Doherty amplifier. Presented at: 35th European Microwave Conference, Paris, France, 4-6 October 2005. 35th European Microwave Conference: conference proceedings. Horizon House,

Williams, T., Benedikt, Johannes and Tasker, Paul J. 2005. Application of a novel active envelope load pull architecture in large signal device characterisation. Presented at: 35th European Microwave Conference, Paris, France,

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

Aboush, Z., Benedikt, Johannes and Tasker, Paul 2004. High power harmonic active load-pull using broadband matching networks. Presented at: 9th IEEE High Frequency Postgraduate Student Colloquium, Manchester, UK, pp. 145-150.

Lees, Jonathan, Haczewski, J., Benedikt, Johannes and Tasker, Paul 2004. An automated multi-stimulus measurement system for characterising multi-device amplifiers. Presented at: 34th European Microwave Conference, Amsterdam, The Netherlands, pp. 435-438.

Williams, T., Benedikt, Johannes and Tasker, Paul J. 2004. Novel base-band envelope load pull architecture. Presented at: 9th IEEE High Frequency Postgraduate Student Colloquium, Manchester, UK, pp. 157-161.

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

Lees, Jonathan, Goss, M., Benedikt, Johannes and Tasker, Paul 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. IEEE, pp. 2213-2216. 10.1109/MWSYM.2003.1210604

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

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

Benedikt, Johannes and Tasker, Paul 2002. High power time-domain measurement bench for power amplifier development. Presented at: Asia-Pacific Microwave Conference, Institute of Electronics, Information and Communication Engineers (IEICE), Kyoto, Japan, pp. 303-306.

Tasker, Paul J. 2002. Non-linear vector network analyser – simply what is it and what can it do? Presented at: 58th ARFTG Conference, San Diego, USA,

Tasker, Paul J. and Benedikt, Johannes 2002. High-power time-domain measurement bench for power amplifier development. Presented at: 59th ARFTG Conference Digest, Seattle, USA, pp. 107-110.

Tasker, Paul J. and Fernandez-Barciela, M. 2002. HBT small signal T and pi model extraction using a simple, robust and fully analytical procedure. Presented at: IEEE MTT-S International Microwave Symposium, Seattle, USA, pp. 2129-2132.

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

Gaddi, R., Pla, J. A., Benedikt, Johannes and Tasker, Paul J. 2001. LDMOS electro-thermal model validation from large-signal time-domain measurement. Presented at: IEEE MTT-S International Microwave Symposium Digest 2001, Phoenix, AZ, USA, 20-25 May 2001. Microwave Symposium Digest, IEEE MTT-S International (Phoenix, USA). pp. 399-402.

Morgan, D. G., D., Edwards G., Phillips, A. and Tasker, Paul 2001. Full extraction of PHEMT state functions using time domain measurement. Presented at: IEEE MTT-S International Microwave Symposium, Phoenix, USA, pp. 823-826.

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

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

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

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

This list was generated on Thu Dec 14 02:33:58 2017 GMT.