Experimental Validation of a Four-Way Outphasing Combiner for Microwave Power Amplification

被引：24

作者：

Barton, Taylor W. ^{[1
]}

Dawson, Joel L. ^{[1
]}

Perreault, David J. ^{[1
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2013年 / 23卷 / 01期

关键词：

Base stations; outphasing; power amplifier (PA);

D O I：

10.1109/LMWC.2012.2236084

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：

This letter presents a 2.14 GHz, four-way power combining and outphasing system for high-power amplifiers such as those in radio basestations (RBS). The combiner is ideally loss-less, and enables power control through load modulation of the power amplifiers (PAs). A discrete-component power combiner is designed and characterized, and combined with inverse Class-F PAs using GaN HEMT devices to develop a complete PA system. We demonstrate the effectiveness of the system over a range of outphasing control angles. This first-ever microwave implementation of the outphasing system has a peak CW drain efficiency of 68.9%, with efficiency greater than 55% over a 5.5 dB power range. It provides an average modulated efficiency of 57% for a W-CDMA signal with 3.47 dB peak to average power ratio (PAPR) at 42 dBm output power.

引用

页码：28 / 30

页数：3

共 7 条

[1]

[Anonymous], 2012, 2012 IEEE MTT S INT

[2]

Barton T. W., 2012, THESIS MIT CAMBRIDGE

[3] High power outphasing modulation [J].