一种Ka频段功率合成放大器的设计  

Design of a Power Combing Amplifier in Ka-band

作　　者：王斌[1] 汪春霆[1] WANG Bin WANG Chun-ting(The 54th Research Institute of CECT, Shifiazhuang Hebei 050081, China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2017年第1期49-52,共4页Radio Engineering

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2015AA015701)

摘　　要：为了满足系统对发射机小型化的需求,设计了一种Ka频段功率合成放大器,采用波导空间功率合成结合电路功率合成的方式,有效地提高了功率合成放大器的功率密度。吸收传统威尔金森电桥的优点,设计了一种低损耗毫米波微带集成3 d B电桥,其成本低,加工容易,在26~32 GHz插入损耗小于0.3 d B。提出了一种新型的魔T功率合成结构,既保持了较好的3 d B功率分配又提高了两输出支路的隔离度。以此2种3 d B电桥为基础的Ka频段功率合成网络,可提高功率合成放大器工作的稳定性。In order to meet the need of system for transmitter miniaturization,the paper presents a power combing amplifier in Ka- band.The power density of the power combing amplifier is increased through waveguide spatial power combining and circuit power combining.A low-loss millimeter wave microstrip integrated 3 dB hybrid is proposed , which extracts the advantages of traditional Wilkinson hybrid.It is easily fabricated and with low cost,and its insertion loss is lower than 0,3 dB within 26-32 GHz.A novel magic tee is pro- posed,which not only maintains a good 3 dB power division, but also improves the isolation between the two output ports. A Ka-band power combining network based on the two 3 dB hybrids can improve the stability of power amplifier.

关 键 词：毫米波 功率合成 微带集成3dB电桥 魔T 

分 类 号：TN73[电子电信—电路与系统]