Automatic control of efficiency and linearity in power amplifiers for low-power wireless communications

被引：0
|
作者：
Yang, KH [1 ]
East, JR [1 ]
Haddad, GI [1 ]
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ctr High Frequency Microelect, Ann Arbor, MI 48109 USA
来源：
1998 TOPICAL MEETING ON SILICON MONOLITHIC INTEGRATED CIRCUITS IN RF SYSTEMS: DIGEST OF PAPERS | 1998年
关键词：
D O I：
10.1109/SMIC.1998.750204
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 new scheme for power amplifiers is proposed, which can provide both high efficiency and linearity. The proposed amplifier operates in a virtual Class-A mode under novel dual bias control to maximize the power-added efficiency along with its inherent Class-A linearity. The new dynamic dual bias control involves controlling both bias current and voltage of the amplifier with a varying envelope of input RF signals. The efficiency of the proposed amplifier is theoretically evaluated and compared with that of other conventional amplifier schemes. Based on theoretical analyses, several promising schemes for dual analog and digital bias control are proposed and discussed.
引用
收藏
页码：113 / 118
页数：6
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