Design Approach for Realization of Very High Efficiency Power Amplifiers

Roff, Christopher, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 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

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Abstract

This paper presents a systematic methodology for overcoming the practical design problems inherent to real world high efficiency power amplifier (PA) designs. The approach is based on measured RF waveforms and hence guarantees the definite accomplishment of high efficiency modes of operation. The study highlights the important design considerations which must be understood in order to correctly engineer voltage and current waveforms at the device output. The factors limiting performance from reaching ideal efficiency values are clarified and demonstrated on a real device. The impact of device scaling is also explained, showing the increased difficulty in realising high efficiency amplifier modes in large periphery devices.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Uncontrolled Keywords:	Microwave Power Amplifiers , Microwave measurements , RF waveforms , current waveforms , device scaling , high efficiency amplifier modes , power amplifier design , voltage waveforms
ISSN:	0149-645X
Last Modified:	17 Oct 2022 09:03
URI:	https://orca.cardiff.ac.uk/id/eprint/1935

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