Efficiency ehancement of W-CDMA base-station envelope tracking power amplifiers via load modulation

被引：4

作者：

Jeong, Jinho

Asbeck, Peter

机构：

[1] Kwangwoon Univ, Dept Elect & Commun Engn, Seoul 139701, South Korea

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

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2007年 / 49卷 / 08期

关键词：

efficiency; envelope tracking; load modulation; power amplifier; W-CDMA;

D O I：

10.1002/mop.22566

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：

Load impedance modulation and gate bias control were investigated to improve the performance of W-CDMA base-station envelope tracking amplifiers by means of simulations based on the measured data of a 10-W GoAS FET power amplifier. It is shown that adapting the load impedance along with the drain bias voltage can effectively improve the average efficiency of envelope tracking amplifier. The improvement becomes more apparent in the operating regime of power back-off. (c) 2007 Wiley Periodicals, Inc.

引用

页码：1954 / 1957

页数：4

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