A CMOS class-E Power Amplifiers with Power Control

descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 May 2007Publisher:IEEEJournal:2007 IEEE International Symposium on Circuits and Systems

Authors: Tongqiang Gao; Dongmei Li; Baoyong Chi; Zhihua Wang 0001;

doi: 10.1109/iscas.2007.377891

A CMOS class-E Power Amplifiers with Power Control

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Abstract

In this paper, a CMOS class-E power amplifier with power control is presented. Its output power could be varied over a broad range with high efficiency by utilizing the combination of the parallel amplification technique and the drain modulation technique. The drain modulation is implemented as a class-S modulator and the output powers of the parallel amplifiers are combined with quarter-wavelength transmission lines. The simulation results show that the power amplifier could achieves a maximum power-added efficiency (PAE) of 47.9% and maintain a PAE higher than 41% over the 140-700mW output power range.

Related Organizations

Chinese Academy of Sciences
China (People's Republic of)
Institute of Microelectronics
China (People's Republic of)
Tsinghua University
China (People's Republic of)

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