16 October 2008 RF power amplifier design for high-efficiency applications
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Abstract
In this paper a time domain waveform measurement system with active harmonic load-pull has been used to enhance the design cycle of RF power amplifiers (PAs). Wave-shaping (waveform engineering) techniques using Cardiff University's high power waveform measurement system have yielded optimum device conditions enabling a rapid PA realisation with a first-pass success. The resulting inverse class-F design, based on a 10W GaN HEMT device, is operating at 0.9GHz, and achieving 81.5% drain efficiency in both the load-pull emulated state and also in the directly realised PA. The value of measured waveforms, and the ability to engineer optimum waveforms to a specific amplifier mode, is demonstrated in this study.
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Peter Wright, Peter Wright, Chris Roff, Chris Roff, T. Williams, T. Williams, J. Lees, J. Lees, J. Benedikt, J. Benedikt, P. J. Tasker, P. J. Tasker, } "RF power amplifier design for high-efficiency applications", Proc. SPIE 7112, Unmanned/Unattended Sensors and Sensor Networks V, 71120T (16 October 2008); doi: 10.1117/12.801890; https://doi.org/10.1117/12.801890
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