Maximum efficiency and output of class-F power amplifiers

被引：182

作者：

Raab, FH ^{[1
]}

机构：

[1] Green Mt Radio Res Co, Colchester, VT 05446 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2001年 / 49卷 / 06期

基金：

美国国家航空航天局;

关键词：

amplifier; class F; power;

D O I：

10.1109/22.925511

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A class-F power amplifier (PA) improves efficiency and power-output capability (over that of class A) by using selected harmonics to shape its drain-voltage and drain-current waveforms, Typically, one waveform (e,g,, voltage) approximates a square wave, while the other (e,g,, current) approximates a half sine wave, The output power and efficiency of an ideal class-F PA can be related to the Fourier coefficients of the waveforms, and Fourier coefficients for maximally flat waveforms have been determined. This paper extends that theory by determining the coefficients for the maximum power and efficiency possible in a class-F PA with a given set of controlled harmonics.

引用

页码：1162 / 1166

页数：5

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