襄樊学院毕业论文(设计)PAGEII电路的电磁兼容性研究ResearchofElectromagneticCompatibilityincircuit专业：电子信息科学与技术学号：03111124姓名：李小会指导教师：张静内容摘要电路的电磁兼容性是指其在一个电磁环境中能正常工作的适应能力.电磁兼容性设计是提高产品可靠性的技术途径之一，提高电路的电磁兼容性有利于提高整个电子设备的可靠性.本文就实际工程中普遍存在的电磁干扰问题,结合电磁兼容思想,从电磁干扰的产生、种类以及耦合途径出发,对电路的电磁兼容性设计方法进行了总结和归纳。介绍了从印制电路板的选取到元器件的布置以及地线、电源线和信号线的设计中减少电磁干扰的设计方法。电磁兼容防护性设计中的滤波技术和接地技术,也做了较详细的分析。根据具体情况提出抑制各种干扰及工程设计的方法.关键词:电磁兼容，干扰源，印制电路板，模拟电路，数字电路，噪声，信号干扰，时钟干扰AbstractElectromagneticcompatibilityofelectriccircuitisthatithastheabilityofadaptingtorunnormallyintheenvironmentoftheelectromagnetism.Thedesigningofelectromagneticcompatibilityisoneofthewaytoimprovingthereliabletechnologyofthearticles;itisgoodforimprovingtheelectromagneticcompatibilityofelectriccircuittoimprovethereliabilityofalltheelectricequipment.AimingattheuniversalElectromagneticinterferenceEMIproblemsinrealitythispapersummarizesthedesignmeasuresincircuitbasedonEMCconceptionaccordingtoEMIsourcessortsandcouplingapproaches.Adesignmethodofreducingelectromagneticinterference,includingthechoiceofPCBs,thearrangementofelements,thedesignofgroundtraces,maintracesandsignaltracesisalsointroduced.Forthedefensedesigningofelectromagneticcompatibility,thearticleelaboratelyanalysesthedesigningoffilteratwavesandadjoiningtheearth.Inaccordingtoelaborateconditions,thearticlerelativelyputforwardtothemeasuresofretardingallkindsofinterruptingandthemethodofenginedesigning.Keywords:electromagneticcompatibility，interferencesources，PCB，analogcircuits，digitalcircuit，noise，signalinterference，clockinterference目录内容摘要…………………………………………………………..ⅡAbstract…………………………………………………………...Ⅲ第一章引言………………………………………………………..1TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc170039836"第二章电路产生的电磁干扰……………………………………………PAGEREF_Toc170039836\h2HYPERLINK\l"_Toc170039837"§2.1一些电磁干扰现象………………………………………………...PAGEREF_Toc170039837\h2HYPERLINK\l"_Toc170039838"§2.2电路中的干扰主要来源…………………………………………….PAGEREF_Toc170039838\h3HYPERLINK\l"_Toc17