High Efficiency Transmitter Using Varactor Based Dynamic Load Modulation

被引：0
|
作者：
Fager, C. [1 ]
Cao, H. [1 ]
Eriksson, T. [2 ]
Jos, R. [3 ]
Nemati, H. [1 ]
Soltani, A. [2 ]
Zirath, H. [1 ]
机构：
[1] Chalmers, GigaHertz Ctr, Dept Microtechnol & Nanosci, SE-41296 Gothenburg, Sweden
[2] Chalmers, GigaHertz Ctr, Signals & Syst, SE-41296 Gothenburg, Sweden
[3] NXP Semicond, NL-6534AE Nijmegen, Netherlands
来源：
2010 IEEE INTERNATIONAL MICROWAVE WORKSHOP SERIES ON RF FRONT-ENDS FOR SOFTWARE DEFINED AND COGNITIVE RADIO SOLUTIONS (IMWS 2010) | 2010年
关键词：
Power amplifiers; efficiency; varactors; load modulation; LDMOS; MATCHING NETWORKS; AMPLIFIER; POWER;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents results for a dynamic load modulation transmitter where an existing 1 GHz LDMOS power amplifier is combined with a varactor based tuneable load network to produce a dramatic efficiency improvement for modulated signals. The transmitter is combined with a dedicated linearization method to achieve an average PAE of 53% for a WCDMA signal at 7 dB PAPR. The results demonstrate the potential of dynamic load modulation for future transmitters combining flexibility and high efficiency at a low cost.
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页数：4
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