A Concurrent Dual-band Doherty Power Amplifier with Performance Enhancement Using a Novel Impendence Invert Network

被引：4

作者：

Su, Zhilin ^{[1
]}

Yu, Cuiping ^{[1
]}

Tang, Bihua ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing Key Lab Work Safety Intelligent Monitorin, Beijing 100876, Peoples R China

来源：

2019 IEEE MTT-S INTERNATIONAL WIRELESS SYMPOSIUM (IWS 2019) | 2019年

基金：

中国国家自然科学基金;

关键词：

Dual-band Doherty power amplifier; dual-band; coupled line; concurrent;

D O I：

10.1109/ieee-iws.2019.8803996

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：

In this paper, a novel dual-band impendence invert network (DBIIN) is proposed to enhance the performance of dual-band Doherty power amplifier (DPA). The designed structure is composed of a coupled line and four microstrip lines. This network can realize a perfect dual-band matching characteristic at both saturation and back-off regions with extended bandwidth, thus a better efficiency and band performance are obtained. Based on the proposed DBIIN, a 1.42/2.4 GHz concurrent DPA is implemented using two identical 10-W GaN devices. The measurement results show that the 6dB back-off (BO) drain efficiency (DE) are 61% at 1.42 GHz and 52.8% at 2.4 GHz with about 50 MHz bandwidth at each individual passband, respectively.

引用

页数：3

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