小型化宽带纺锤形90°扭波导设计  

90°Broadband Spindle-Shaped Twisted Waveguide Design

作　　者：王海 雷雪[1] 段田东[1] 王克鑫 杨蕊 WANG Hai;LEI Xue;DUAN Tiandong;WANG Kexing;YANG Rui(Information Engineering University, Zhengzhou 450001,China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2021年第2期147-150,共4页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61602511)。

摘　　要：设计了一款小型化宽带单阶梯纺锤形90°扭波导,具有结构简单、成本低廉等优点;0.25倍λg(波导波长)的纵向长度,达到减小反射系数的目的;采用圆弧结构改善阻抗匹配,减小扭波导的加工难度;利用电磁理论对扭波导进行理论分析;采用控制变量法,分析工作频带与弧度R/扭波导厚度d之间的关系。实测与仿真结果表明,电场实现了90°扭转,S11<-20dB的相对带宽为43%,插入损耗小于0.05dB,达到拓展带宽的目的。In this paper,a miniaturized broadband single-step spindle-shaped 90°twisted waveguide is designed,with simple structure and low price.The longitudinal length of 0.25 timesλg(waveguide wavelength)is designed to reduce the reflection coefficient.The arc structure is adopted to improve impedance matching and reduce the processing difficulty of twisted waveguide.The twisted waveguide is theoretically analyzed by electromagnetic theory;the control variable method is used to analyze the relationship between the working frequency band and the radian R/the thickness of the twisted waveguide.The actual measurement and simulation results show that an operating bandwidth of 43%is obtained,the insertion loss is less than-0.05dB,and the electric field twisting 90°is achieved.

关 键 词：单阶梯 扭波导 控制变量 

分 类 号：TN911.7[电子电信—通信与信息系统]