宽带混响电磁屏蔽效果检测系统设计  

System design of testing shielding effectiveness based on mode stirring technique

作　　者：程银魁[1] 康南生[1] 邱宏杰 刘泓昊[1] 

机构地区：[1]中国科学院合肥智能机械研究所 [2]江苏苏州沃野系统控制有限公司,江苏张家港215638

出　　处：《电测与仪表》2007年第5期51-54,共4页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金重点资助项目(10635070)

摘　　要：运用波模搅拌混响技术即混响室技术,能够产生一个较均匀的电磁场或一个场强均匀分布的检测空间。使用该种技术可以执行电磁兼容测量,检验电缆或检测件的屏蔽效果。本文介绍了波模搅拌混响技术的基本原理,并对利用波模搅拌混响技术实现电子器件的电磁屏蔽效果自动检测装置的设计,进行了详细论述。另外,给出了某种电缆在不同时间、不同地点所测试的电磁屏蔽效果,并对其数据进行比较。Whilst mode stirring technique inside a closed cavity, that is reverberation chamber, is applied to produce a more uniform 3D field, the new EMC measurement technique is used to test the shielding effectiveness. This paper introduces the fundamental principle of the reverberation chamber and mode stirrer, and describes the design of an auto-measurement system with the technique which is used for testing the shielding effectiveness of cable and device in detail. Also, the testing results of shielding effectiveness on a cable are given and compared among the measurement data from different time and at different positions.

关 键 词：屏蔽效果 混响室 波模搅拌器 

分 类 号：TM153.5[电气工程—电工理论与新技术]