基于镜像电桥的超宽带功放二次谐波调谐方法  

Second Harmonics Tuning Method of Ultrawide-band Power Amplifier Based on Mirroring Bridge

作　　者：鲁帆[1] 孙彪[1] 邓畅 康小克 LU Fan;SUN Biao;DENG Chang;KANG Xiao-ke(The 723 Institute of CSIC,Yangzhou 225101,China;Chengdu Space-Dtronics Communication Technology Co.Ltd,Chengdu 610000,China)

机构地区：[1]中国船舶重工集团公司第七二三研究所,江苏扬州225101 [2]成都中科天御通信技术有限公司,四川成都610000

出　　处：《舰船电子对抗》2020年第5期95-99,共5页Shipboard Electronic Countermeasure

摘　　要：为了满足电子对抗发射系统的大功率输出需求,针对超宽带大功率射频信号带内谐波问题,提出一种可实现谐波调谐电路的方法:利用镜像Lange电桥进行功率合成,实现带内谐波的有效压制。通过实际电路测试表明:90°镜像lange电桥具有2.5 dB的带内谐波抑制能力,符合理论推断。此电路设计方法对超宽带大功率放大器组件的合成效率和耐功率水平有很大的提升,也为双路输出放大器设计奠定了基础。In order to meet the requirements of high power output for electronic countermeasure transmitting system,a method to realize the harmonic tuning circuit is proposed in this paper aiming at the in-band harmonics problem of ultrawide-band high power radio frequency signal.The effective suppression of harmonics in the band is realized by using the mirroring Lange bridge for power synthesis.Through the actual circuit test,it is shown that the 90°mirroring Lange bridge has 2.5 dB in-band harmonic suppression capability,which is in line with theoretical inference.This circuit design method can greatly improve the synthesis efficiency and power tolerance level of ultrawide-band high power amplifier components as well as lay a foundation for the design of dual-output amplifier.

关 键 词：镜像电桥 超宽带 功率合成 谐波抑制 

分 类 号：TN722.33[电子电信—电路与系统]