一种U波段功率放大器的研制  

Design of A U-band Power Amplifier

作　　者：李莹莹 周永宏 LI Ying-ying;ZHOU Yong-hong(School of Electronic Information Engineering,China West Normal University,Nanchong Sichuan 637009,China)

机构地区：[1]西华师范大学电子信息工程学院,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2024年第5期546-552,共7页Journal of China West Normal University(Natural Sciences)

基　　金：西华师范大学国家级一般培育项目(19B025)。

摘　　要：本文设计并分析了一种基于波导空间功率合成技术的U波段(40—60 GHz)功率放大器,采用E面T型结功率分配/合成结构和波导-微带转换实现宽带、低损耗的四路功率合成网络,建模仿真优化后加工制造实物,在全频段内测得无源背靠背损耗小于1.3 dB,与仿真结果吻合较好。装配4片某国产放大芯片后实测得在40—60 GHz内饱和输出功率大于37.8 dBm(6.03 W),其中在40—54 GHz内输出功率优于40 dBm(10 W),与输入功率相比,增益为7 dB左右,合成效率超过了80%。In this paper,a U-band(40—60 GHz)power amplifier based on waveguide spatial power synthesis technology is designed.The four-channel power synthesis network with broadband and low loss is realized by employing E-plane T-junction power distribution/synthesis structure and waveguide-microstrip conversion.After modeling,simulation and optimization,the physical product is processed and manufactured.The measured back-to-back insertion loss in the full frequency band is less than 1.3 dB,which is in good agreement with the simulation results.After assembling four domestic amplification chips,it is measured that the saturated output power is more than 37.8 dBm(6.03 W)in 40—60 GHz,and the output power is better than 40 dBm(10 W)in 40—54 GHz.Compared with the input power,the power gain is about 7 dB,and the synthesis efficiency is more than 80%.

关 键 词：固态功率放大器 U频段 宽频带 低损耗 E面T型结 

分 类 号：TN73[电子电信—电路与系统]