电子设备中天线的电磁兼容问题分析  

Analysis on EMC Problems of Antenna of Electric Equipments

作　　者：孟逢逢[1] 朱武[1] 

机构地区：[1]上海电力学院,上海200090

出　　处：《现代电子技术》2005年第19期104-106,共3页Modern Electronics Technique

摘　　要：随着电子、电气设备或系统的广泛应用和现代电子设备的高密度组装,电磁干扰也越来越严重。为确保电子设备的正常工作,必须解决电子设备在电磁环境中的适应能力,因此电磁兼容性问题的研究非常重要。首先介绍了电磁兼容性原理;分析了电磁干扰的传播途径;重点讨论了电子设备中天线的互耦效应。天线的互耦效应直接影响到天线的性能和电参数的改变,由于阵列天线结构形式和电磁耦合作用的复杂性,互耦的分析通常需借助于电磁场数值算法。提出了一种利用等效网络来分析阵列互耦特性的方法,给出了N+1端口阵列互耦模型。最后从软件和硬件两个方面讨论了互耦影响的校正方法。With the extensive applications of electric equipments and systems and the high-density assembly of modern electric equipment, EMI（Electromagnetic Interference）becomes more and more serious. To insure the electric equipments work normally,it needs to adapt to the electromagnetic environment. It＇s important to do some research on the problem of EMC （Electromagnetic Compatibility）. This paper introduces the theory of EMC, and analyses the propagation routes of EMI, and stresses the mutual coupling effect. The mutual coupling effect of antenna directly affects its performance and electric parameter,for the complexity of array antenna structure and electromagnetic coupling, the analysis of mutual coupling effect usually recurs to numerical techniques to compute electric and magnetic fields. This paper raises a point of equivalent network,and gives out the N＋1 ports array mutual coupling model. At last discusses the revising methods of antenna of electric equipments from the two points of view of software and hardware.

关 键 词：电磁干扰 电磁兼容 互耦效应 校正 

分 类 号：TN820.17[电子电信—信息与通信工程]