EMI测试中虚拟暗室的使用  

The Usage of Virtual Anechoic Chamber in EMI Test

作　　者：陈京平[1] 刘建平[1] 田军生[1] 

机构地区：[1]空军装备研究院雷达与电子对抗研究所,北京100085

出　　处：《无线电工程》2008年第10期56-57,64,共3页Radio Engineering

摘　　要：为了检验使用效果,按照虚拟暗室系统的使用方法,使其分别工作于背景滤除模式和干扰源定位模式下,对某一背景环境下固定设备的电磁骚扰发射进行了测试和实验分析,结果表明:实验中系统的背景滤除水平最大可达到,但对强弱信号的匀性滤除影响了整个频段的滤除效果,因此没有得到理想的结果。工作于干扰源定位模式时,对台灯、手机的实验表明系统可以对空间中同频同源的信号进行定位,但若背景中同源发射较多时,对设备的发射不易区分。The effects of background filtration mode and interference location mode of the virtual anechoic chamber are verified, and the electromagnetic interference of some devices in a fixed environment are measured in a test. The results show that the max amplitude of the background filtration mode is, the ideal effect has not been gained which may be caused by the uniform level of the background filtration mode. The effect of the interference location mode was validated by the testing results for reading lamps and mobile phones. It＇ s proved that when there are many signals coming from the same source among the background signals, the frequency spectrum of the device will not be easy to be distinguished.

关 键 词：EMI测试 虚拟暗室 背景滤除 干扰源定位 

分 类 号：TM93[电气工程—电力电子与电力传动]