On the continuity of high efficiency modes in linear RF power amplifiers

Cripps, Stephen Charles ORCID: https://orcid.org/0000-0002-2258-951X, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Clarke, A. L., Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349 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

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Abstract

A novel formulation for the voltage waveforms in high efficiency linear power amplifiers is described. This formulation demonstrates that a constant optimum efficiency and output power can be obtained over a continuum of solutions by utilizing appropriate harmonic reactive impedance terminations. A specific example is confirmed experimentally. This new formulation has some important implications for the possibility of realizing broadband >10% high efficiency linear RF power amplifiers.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Amplifier modes; Class AB; Class J; high efficiency; load pull
Publisher:	IEEE Microwave Theory and Techniques Society
ISSN:	1531-1309
Last Modified:	17 Oct 2022 10:26
URI:	https://orca.cardiff.ac.uk/id/eprint/8047

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