Millimeter-Wave Power Amplifier Based on Coaxial-Waveguide Power-Combining Circuits

被引：39

作者：

Song, Kaijun ^{[1
,2
]}

Fan, Yong ^{[1
]}

Xue, Quan ^{[2
]}

机构：

[1] Univ Elect Sci & Technol China, EHF Key Lab Fundamental Sci, Sch Elect Engn, Chengdu 610054, Peoples R China

[2] City Univ Hong Kong, Dept Elect Engn, State Key Lab Millimeter Waves, Hong Kong, Hong Kong, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2010年 / 20卷 / 01期

基金：

中国国家自然科学基金;

关键词：

coaxial waveguide; millimeter wave; power amplifier; power combiner; power divider;

D O I：

10.1109/LMWC.2009.2035965

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：

A millimeter-wave power amplifier based on a coaxial-waveguide power-combining circuit is presented in this paper. A coaxial stepped impedance transformer is used to provide an impedance transition from the 50-input coaxial line to the oversized coaxial waveguide, and its equivalent-circuit model has also been developed. A Ka-band four-device coaxial-waveguide power amplifier is fabricated and tested. The 10-dB return loss bandwidth of the fabricated amplifier is from 27.5 to 40 GHz, and the power amplifier has 17-25.9 dB gain over a wide bandwidth from 26 to 38 GHz. The measured output power at 1-dB gain compression is about 26.6 dBm at 30 GHz, with a power-combining efficiency of about 90%.

引用

页码：46 / 48

页数：3

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