Linearizing CMOS Switching Power Amplifiers Using Supply Regulators

被引：13
|
作者：
Walling, Jeffrey S. [1 ]
Allstot, David J. [1 ]
机构：
[1] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2010年 / 57卷 / 07期
基金：
美国国家科学基金会;
关键词：
CMOS; linearization; power amplifier (PA); supply modulation; switching amplifier; 65 NM CMOS; CLASS-E PA; MODULATION; RF;
D O I：
10.1109/TCSII.2010.2049924
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：
In high-speed communications systems, the power amplifier (PA) is the dominant source of power consumption from the battery and, thus, one of the main limitations in increased mobility. Switching PAs are more efficient than their linear counterparts and, thus, demand less power from the battery; however, they do not have sensitivity to the amplitude variations seen in nonconstant-envelope modulation. This brief discusses supply modulation, a technique that enables use of switching PAs for improved power efficiency, by providing a means of linearizing the PA.
引用
收藏
页码：497 / 501
页数：5
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