S频段平行耦合微带带阻滤波器的设计  

Design of S band parallel coupled microstrip band-Stop filter

作　　者：姚明阳 马汉林 Yao Mingyang;Ma Hanlin(Liuzhou Railway Vocational Technical College,Liuzhou Guangxi,545616)

机构地区：[1]柳州铁道职业技术学院,广西柳州545616

出　　处：《电子测试》2021年第11期16-18,共3页Electronic Test

基　　金：2019年广西高校中青年教师科研基础能力提升项目资助“城轨列车车门故障检测系统的开发与研究(2019KY1561)”。

摘　　要：在卫星通信系统中,常常采用窄带带阻滤波器来抑制收发信机中的发射信号,从而使接收杂散在测试仪器中显露出来,便于测试杂散指标。本文通过对微带耦合带阻滤波器的理论基础进行分析,利用奇偶模阻抗分析的方法,得到微带线的尺寸,利用HFSS软件对微带带阻滤波器进行建模仿真和优化分析,研制出了一种S频段的耦合微带带阻滤波器,通过实验,该滤波器具有良好的阻带特性,其阻带衰减小于-30dB,接收通带的插损约为3dB,可适用于相关频段的射频链路中。In satellite communication system,narrowband band-stop filter is often used to suppress the transmitting signal in the transceiver,so as to make the receiving stray appear in the test instrument,which is convenient to test the stray index.In this paper,the theoretical basis of the microstrip coupled band-stop filter was analyzed,and the size of the microstrip line was obtained by means of odd-even mode impedance analysis.HFSS software was used for modeling,simulation and optimization analysis of the microstrip band-stop filter,a S band coupled microstrip band stop filter was developed.Experiments indicates that this filter has good stopband characteristics,Its stopband attenuation is less than-30dB,and the insertion loss of the receiving pass band is about 3dB,so It’s very practical to be used in rf links of relevant frequency bands.

关 键 词：S频段 耦合微带线 窄带带阻滤波器 奇偶模阻抗 

分 类 号：TN713.5[电子电信—电路与系统]