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一、电磁干扰与电磁兼容概述近年来在信息技术领域发展最为迅速的无线通信,包括移动通信技术,彻底改进了人们的生活方式和工作方式,无论是工作还是生活,各种无线通信设备已经是人们不可或缺的需要。然而,如果不能很好地进行规划和设计,无线设备和无线设备、无线设备和非无线设备之间便会出现严重的电磁兼容问题:性能恶化、互相干扰。甚至有可能造成系统完全瘫痪的严重后果,这便是我们常说的电磁干扰。但准确的定义应该叙述为:“由于发射、辐射或感应之一,或者几种组合起来所引起的非欲收能量对无线电通信系统的接收产生影响,并使其工作质量降低的这种现象称之为干扰”。其基本形式有两种: 1)系统间的干扰,即两个或两个以上无线系统间的干扰,在这种系统中电磁能辐射有意的。 2)工业干扰,即有些工业设备的目的不是为了传送信息,但又要产生电磁能,而这两种电磁能都是有害的。电磁兼容,英语缩写为:EMC。全称是“Electromagnetic Com-
I. Overview of Electromagnetic Interference and Electromagnetic Compatibility In recent years, wireless communications, including mobile communications technologies, which have been rapidly developed in the field of information technology, completely improve people’s way of life and working style. Whether they are working or living, various wireless communication devices are already People have an indispensable need. However, if wireless devices and wireless devices are not properly planned and designed, there will be serious electromagnetic compatibility issues between wireless devices and non-wireless devices: deteriorating performance and interfering with each other. It may even cause serious consequences of total paralysis of the system, which is what we often say electromagnetic interference. However, the precise definition should be described as: ”The phenomenon that the amount of unsolicited energy caused by one of the emissions, the radiation or the induction, or the combination thereof, affects the reception of the radiocommunication system and degrades its quality of work Call it interference. “ There are two basic forms: 1) Inter-system interference, interference between two or more wireless systems where electromagnetic energy is intentionally radiated. 2) Industrial Disturbances, that is, some industrial devices are not designed to transmit information but generate electromagnetic energy, both of which are detrimental. Electromagnetic compatibility, English abbreviation: EMC. Full name is ”Electromagnetic Com-