Efficiency Enhancement of mm-Wave Power Amplifiers Using Envelope Tracking

被引：16

作者：

Yan, Jonmei J. ^{[1
]}

Presti, Calogero D. ^{[1
]}

Kimball, Donald F. ^{[1
]}

Hong, Young-Pyo ^{[2
]}

Hsia, Chin ^{[1
]}

Asbeck, Peter M. ^{[1
]}

Schellenberg, James ^{[3
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[2] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

[3] QuinStar Technol Inc, Torrance, CA 90505 USA

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2011年 / 21卷 / 03期

关键词：

Efficiency; envelope tracking (ET); linearity; millimeter wave power amplifier (PA); peak-to-average ratio;

D O I：

10.1109/LMWC.2010.2102747

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 44 GHz GaAs MMIC-based power amplifier (PA) which uses envelope tracking (ET) techniques for efficiency enhancement. Digital pre-distortion (DPD) is also employed to achieve high linearity. For a 7.6 dB PAPR 64QAM 20 MHz bandwidth signal (data rate 120 Mb/s) at an output power of 23.8 dBm, the measured EVM was 2.0% and ACPR1 was better than -40 dBc. Power efficiency enhancement of more than 5.7 times for the final MMIC stage (from 1.22% to 7%) was measured, using an external drain modulator. To the authors' best knowledge, this is the first time envelope tracking has been applied to PAs in the millimeter wave regime.

引用

页码：157 / 159

页数：3

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