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
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Abstract
Results from a fully implemented class-J RFPA (RF power amplifier) are presented for the first time, which demonstrate this mode's high efficiency potential across a substantial bandwidth. Using a commercially available 10W GaN (gallium nitride) HEMT device, and the high power waveform measurement and active load-pull capability at Cardiff University, class-J operation has demonstrated drain efficiencies between 60-70% across a 1.35-2.25 GHz (50%) bandwidth whilst delivering 10 Watts of power at the 2dB compression point. Realisation of the design has confirmed that the optimum harmonic load impedances of the class-J amplifier are more practically realisable than conventional class-AB modes, with better compromise between power and efficiency tradeoffs over a substantial RF bandwidth.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Uncontrolled Keywords: | Bandwidth, class-J, high efficiency, power amplifiers |
| Publisher: | IEEE |
| ISBN: | 9781424428038 |
| ISSN: | 0149-645X |
| Last Modified: | 19 Oct 2022 09:35 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/21546 |
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