宽带射频电桥的设计及实现  

Design and Implementation of Wideband RF Bridge

作　　者：马延军[1] MA Yanjun(College of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学通信与信息工程学院,西安710054

出　　处：《电子器件》2020年第5期1112-1115,共4页Chinese Journal of Electron Devices

基　　金：碑林区应用技术研发项目(GX1815,GX1930);西安科技大学校级教育教学改革与研究项目(JG18090)。

摘　　要：设计了基于同轴巴伦传输线的宽带射频电桥,此电桥采用套有磁环的同轴传输线完成单端信号到差分信号的转换。设计了包含测试端口及隔离端口的电桥,并将差分信号加载到电桥以完成传输信号与反射信号分离。利用FR4板材制作了电桥并完成各类指标测试。测试结果表明,该电桥最高工作频率约为3 GHz,方向性约为10 dB@1.5 GHz,插入损耗最大约为3.5 dB,可广泛应用到各类通信及测试系统中。Wideband RF bridge is designed based on coaxial balun,where ferrite beads are passed through the coaxial balun,and single-ended signals are converted to differential signals.Wheastone bridge is designed which includes a test port and an isolation port,where reflection signals are separated from transmission signals.PCB is fabricated by using FR4 materials and several tests are performed.Test results show that the highest frequency of the bridge is about 3 GHz,directivity is about 10 dB@1.5 GHz,and insertion loss is about 3.5 dB.The bridge can be used widely in communications and test equipments.

关 键 词：微波器件 射频电桥 微波测试 传输线 

分 类 号：TN952[电子电信—信号与信息处理] TP39[电子电信—信息与通信工程]