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
收藏
页码：502 / 504
页数：3
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