Design approach for realization of very high efficiency power amplifiers

被引：18
|
作者：
Roff, Chris [1 ]
Benedikt, Johannes [1 ]
Tasker, Paul J. [1 ]
机构：
[1] Cardiff Univ, Cardiff Sch Engn, Cardiff, Wales
来源：
2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-6 | 2007年
关键词：
microwave power amplifiers; microwave measurements;
D O I：
10.1109/MWSYM.2007.380310
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 a systematic methodology for overcoming the practical design problems inherent to real world high efficiency power amplifier (PA) designs. The approach is based on measured RF waveforms and hence guarantees the definite accomplishment of high efficiency modes of operation. The study highlights the important design considerations which must be understood in order to correctly engineer voltage and current waveforms at the device output. The factors limiting performance from reaching ideal efficiency values are clarified and demonstrated on a real device. The impact of device scaling is also explained, showing the increased difficulty in realising high efficiency amplifier modes in large periphery devices.
引用
收藏
页码：143 / 146
页数：4
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