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.
出处
《电测与仪表》
北大核心
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)
关键词
屏蔽效果
混响室
波模搅拌器
shielding effectiveness
reverberation chamber
mode stirrer
