15% BANDWIDTH 7 GHz GaN-MMIC DOHERTY AMPLIFIER WITH ENHANCED AUXILIARY CHAIN

被引：21

作者：

Piazzon, Luca ^{[1
]}

Colantonio, Paolo ^{[1
]}

Giannini, Franco ^{[1
]}

Giofre, Rocco ^{[1
]}

机构：

[1] Univ Roma Tor Vergata, Dept Elect Engn, I-00133 Rome, Italy

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2014年 / 56卷 / 02期

关键词：

Doherty power amplifier; GaN-MMIC; high power amplifiers; POWER-AMPLIFIER; EFFICIENCY;

D O I：

10.1002/mop.28108

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 contribution presents the development and characterization of a GaN Doherty power amplifier for backhaul microwave links in the 6.35-7.35 GHz frequency range. To minimize the AM/AM distortion, a driver stage is integrated in the auxiliary branch. Such feature also allows to obtain a higher overall gain than the standard approach. Moreover, to enlarge the bandwidth a coupled lines directional coupler is adopted at the input to split the power to the two branches. Experimental characterization showed 10.5 dB Gain, 38.1 dBm saturated output power, 42% efficiency at 7 dB output back-off, and 15% bandwidth at 1 dB gain ripple. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:502-504, 2014

引用

页码：502 / 504

页数：3

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