Vol. 57

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2017-06-08

Novel Design Theory for High-Efficiency and High-Linearity Microwave Power Amplifier Based on 2nd Harmonic: Enhanced Class-J

By Seyed Alireza Mohadeskasaei, Fuhong Lin, Xianwei Zhou, and Seyed Alireza Mohadeskasaei
Progress In Electromagnetics Research M, Vol. 57, 103-111, 2017
doi:10.2528/PIERM17033104

Abstract

In this paper, after a brief review of the previous nonlinear power amplifier (PA) classes including Class-B, Class-F, and Class-J, a novel design theory for high-efficiency and high-linearity microwave power amplifier based on 2nd harmonic component of the drain voltage and current signals is proposed. The new scheme introduces a new nonlinear class which like Class-J tunes only two primary harmonic components but unlike Class-J, the drain voltage is boosted to the maximum four times dc drain voltage. A quasi half sinusoidal waveform for the current and a quadratic sinusoidal waveform for the voltage are thus realized in this class, leading to a minimum waveform overlapping. The new class theoretically provides 93% power efficiency. It is, in fact, an enhanced Class-J with higher power efficiency and better linearity performance.

Citation


Seyed Alireza Mohadeskasaei, Fuhong Lin, Xianwei Zhou, and Seyed Alireza Mohadeskasaei, "Novel Design Theory for High-Efficiency and High-Linearity Microwave Power Amplifier Based on 2nd Harmonic: Enhanced Class-J ," Progress In Electromagnetics Research M, Vol. 57, 103-111, 2017.
doi:10.2528/PIERM17033104
http://www.jpier.org/PIERM/pier.php?paper=17033104

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