铁路机车电台设备电磁发射测量专用带阻滤波器设计  

Design on the Dedicated Bandstop Filter for EMC Measurement of Railway Locomotive Radio Equipment

作　　者：曹玉峰 肖建军[2] CAO Yufeng;XIAO Jianjun

机构地区：[1]国能铁路装备有限责任公司,北京100000 [2]北京交通大学,北京100044

出　　处：《铁道通信信号》2024年第1期58-66,共9页Railway Signalling & Communication

基　　金：国能铁路装备有限责任公司技术服务课题(TZKY-21-16)。

摘　　要：铁路无线通信设备发射的信号往往较强,因而在电磁发射测量过程中,极易导致测量接收机出现乱真响应。基于450 MHz无线列调机车电台通信设备的工作特性,研制了一种新型可调阶跃阻抗谐振器腔体窄带带阻滤波器,用于避免电磁发射测量过程中所引起的测量接收机过载问题。通过软件仿真和实物测试,验证了所设计的带阻滤波器较传统腔体滤波器减少了阻带带宽,具有良好的通带特性,且结构简单,体积较小,可以很好地满足机车电台电磁发射测量的需求,有效提高电磁发射测量结果的准确性。In the electromagnetic emission measurement of railway wireless communication equipment,the strong power of useful signals emitted by wireless communication equipment can lead to the problem of spurious response in the measurement receiver.Based on the working characteristics of the 450 MHz wireless train dispatching radio communication equipment,a new type of tunable step impedance resonator cavity narrowband bandstop filter is developed to avoid the overload problem of the measurement receiver caused by electromagnetic emission measurement.Through software simulation and physical testing,it has been verified that the designed bandstop filter reduces the bandwidth of stop band compared to traditional cavity filters.And it has good passband characteristics,simple structure and small volume,which can effectively meet the needs of locomotive radio electromagnetic emission measurement and improve the accuracy of electromagnetic emission measurement results.

关 键 词：无线列调 机车电台 乱真响应 电磁发射测量 可调阶跃阻抗谐振器 腔体结构 带阻滤波器 

分 类 号：TN92[电子电信—通信与信息系统] U285.7[电子电信—信息与通信工程]