Linearization of RF power amplifiers using power feedback

被引：0
|
作者：
Shi, B [1 ]
Sundström, L [1 ]
机构：
[1] Univ Lund, Dept Appl Elect, Competence Ctr Circuit Design, SE-22100 Lund, Sweden
来源：
1999 IEEE 49TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-3: MOVING INTO A NEW MILLENIUM | 1999年
关键词：
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 describes a simple and partly new method for linearization of RF power amplifier using power feedback. Both analysis and experimental results are given. In the analysis, the fundamental properties associated with this scheme are investigated. Advantages and disadvantages are identified and compared with similar linearization techniques. For a given power amplifier characteristics, a simulation method is described to obtain the theoretical limit of reducing nonlinearities with this scheme. Experimental results are also obtained from a prototype linearization system built around a full-custom RF analog integrated circuit in CMOS technology that implements the power feedback scheme. When it was tested with an commercially available efficient power amplifier transmitting a NADC signal, a reduction of about 10dB in the adjacent channel interference was achieved. This is in close agreement with the simulation result.
引用
收藏
页码：1520 / 1524
页数：5
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