Design and linearization of Class-E power amplifier for non-constant envelope modulation

被引：0
|
作者：
Chen, Chi-Tsan [1 ]
Li, Chien-Jung [1 ]
Horng, Tzyy-Sheng [1 ]
Jau, Je-Kuan [2 ]
Li, Jian-Yu [2 ]
机构：
[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung 804, Taiwan
[2] Ind Technol Res Inst, Informat & Commun Res Labs, Hsinchu 310, Taiwan
来源：
2008 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS SYMPOSIUM, VOLS 1 AND 2 | 2008年
关键词：
class-E power amplifier; linearization techniques; supply-voltage modulation; digital envelope predistorter;
D O I：
暂无
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 paper presents design and linearization techniques for a highly efficient but nonlinear Class-E power amplifier (PA) applied to linear RF transmitters. A predistorted envelope modulation scheme is proposed to linearize the Class-E PA. To accomplish this scheme, the Class-E PA is designed with consideration of finite DC-feed inductance for wide supply-voltage modulation bandwidth. In addition, a digital envelope predistorter (DEP) is designed to provide the predistored envelope modulation for both RF-input and supply-voltage signals fed to the Class-E PA. A cdma2000 1x transmitter incorporating such a Class-E PA and a DEP has been implemented to serve as an evidence for the simultaneous achievement of high efficiency and high linearity.
引用
收藏
页码：127 / +
页数：2
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