A Class-E PA With Pulse-Width and Pulse-Position Modulation in 65 nm CMOS

被引：91

作者：

Walling, Jeffrey S. ^{[1
]}

Lakdawala, Hasnain ^{[2
]}

Palaskas, Yorgos ^{[2
]}

Ravi, Ashoke ^{[2
]}

Degani, Ofir ^{[2
]}

Soumyanath, Krishnamurthy ^{[2
]}

Allstot, David J. ^{[1
]}

机构：

[1] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA

[2] Intel Corp, Hillsboro, OR 97124 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2009年 / 44卷 / 06期

基金：

美国国家科学基金会;

关键词：

Class-E; linearization; outphasing; power-added efficiency; power amplifier; pulse-position modulation; pulse-width modulation; TUNED POWER-AMPLIFIER; ENVELOPE ELIMINATION; EFFICIENCY; RESTORATION; DESIGN;

D O I：

10.1109/JSSC.2009.2020205

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-E power amplifier (PA) utilizes differential switches and a tuned passive output network improves power-added efficiency (PAE) and insensitivity to amplitude variations at its input. A modulator is introduced that takes outphased waveforms as its inputs and generates a pulse-width and pulse-position modulated (PWPM) signal as its output. The PWPM modulator is used in conjunction with a class-E PA to efficiently amplify constant envelope (e.g., GMSK) and non-constant envelope (e.g., QPSK, QAM, OFDM) signals with moderate peak-to-average ratios (PAR). The measured maximum output power of the PA is 28.6 dBm with a PAE of 28.5%, and the measured error vector magnitude (EVM) is 1.2% and 4.6% for GMSK and pi/4-DQPSK (PAR approximate to 4 dB) modulated signals, respectively.

引用

页码：1668 / 1678

页数：11

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