摘要
主要介绍在横电磁波传输室中加入匹配膜片降低驻波的原理和方法,并以长宽高为3m×1.5m×1.5m的传输室为例,给出加入匹配膜片前后测量结果的比较。在180MHz工作频率范围内,最大驻波由1.198降低到1.088。由低驻波的横电磁波传输室组成的测试系统只用一个单定向耦合器和一台功率计即可精确计算出高频场强值。
This paper describes a technique of reducing the cell's voltage standingwave ratio (VSWR) by putting a piece of metal into the TEM cell. A comparison of 3m×1.5m×1.5m TEM cell with and without the slice is presented. Within the, fre- quency range (DC-180MHz), the maximum of VSWR was decreased from 1.198 to 1.088. This system could count the strength of field accurately only using a directional coupler and a power meter.
出处
《宇航计测技术》
CSCD
北大核心
1992年第1期8-13,共6页
Journal of Astronautic Metrology and Measurement
关键词
驻波
测量
横电磁传输室
电磁
Standing-wave measurement, +~TEM cell, Electromagnetic compatibility, Electromagnetic measurement, Electromagnetic environment.
