7 GHz MMIC GaN Doherty Power Amplifier With 47% Efficiency at 7 dB Output Back-Off

被引：46

作者：

Camarchia, Vittorio ^{[1
]}

Fang, Jie ^{[1
]}

Moreno Rubio, Jorge ^{[2
]}

Pirola, Marco ^{[1
]}

Quaglia, Roberto ^{[1
]}

机构：

[1] Politecn Torino, Dept Elect & Telecommun, Turin, Italy

[2] Univ Pedag & Tecnol Colombia, Dept Elect, Sogamoso, Colombia

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2013年 / 23卷 / 01期

关键词：

Backhaul networks; Doherty power amplifier (DPA); gallium nitride; monolithic microwave integrated circuit (MMIC);

D O I：

10.1109/LMWC.2012.2234090

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：

Design and characterization of a 7 GHz MMIC GaN Doherty Power Amplifier on TriQuint technology are presented. To the best of the authors' knowledge, the present circuit, suitable for C-band point-to-point backhaul applications, represents the first example of a working MMIC GaN Doherty. Large signal measurements, averaged over 16 MMICs, exhibited power gain of 10 dB, saturated output power in excess of 37 dBm (3 dB gain compression), together with drain efficiency of 47%, at 7 dB of output back-off, and higher than 35% in a 350 MHz band. Two-tone characterization has shown a carrier to 3rd order intermodulation ratio higher than 25 dB in the Doherty region.

引用

页码：34 / 36

页数：3

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