A Broadband Three-device Doherty Power Amplifier based on a Modified Load Modulation Network

被引：0

作者：

Chen, Shichang ^{[1
]}

Qiao, Pengfei ^{[1
]}

Wang, Gaofeng ^{[1
]}

Cheng, Zhiqun ^{[1
]}

Xue, Quan ^{[2
]}

机构：

[1] Hangzhou Dianzi Univ, Microelect CAD Ctr, Hangzhou 310018, Zhejiang, Peoples R China

[2] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2016年

关键词：

Broadband; Doherty amplifier; efficiency; load modulation network; three-device;

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 proposes a broadband three-device Doherty power amplifier design. A new load modulation network with a shunt quarter-wavelength (lambda/4) short stub is introduced for bandwidth extension. Comprehensive analysis of the proposed configuration is given to illustrate the operational principle. For demonstration purpose, a twin-peaking single-carrier Doherty amplifier prototype is devised based on three identical 10W GaN HEMTs. Measurement results show that at least 40% drain efficiency is achieved at 8-dB back-off power, from 2.0 to 2.6 GHz.

引用

页数：4

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