摘要
介绍了传导性电磁干扰噪声分离的目的及意义,并对传导性电磁干扰噪声的分离技术作了讨论,论述了EMI测试中所用的线性阻抗稳定网络(LISN)以及4种分离网络.以实验和仿真的方式重点对其中的两种分离网络的性能进行了研究.通过对比和分析,得出实验和仿真的结果具有良好的一致性,在某些情况下,仿真可以代替实验进行一些研究.通过仿真,进一步探讨了分布电容和元件精度对分离网络性能的影响,结果表明,分布电容对网络的性能有一定影响,Guo网络的分离特性受分布参数的影响较小;而元件精度对分离网络的性能几乎不造成影响.
This paper gives an introduction of the purpose and meaning of discrimination of Conductive Electromagnetic Noise, discusses about discrimination techniques of Conductive Electromagnetic Noise, introduces line impedance stabilization network （LISN） and four different discriminating networks are also introduced, and does an investigation on performance of discrimination networks by means of experiment and simulation, especially on two of them. Comparisons between experiment and simulation results show their good agreement. In some cases, simulation can do some researches instead of experiment. The paper also presents a further investigation on capacitive coupling influence and parameter error＇s influence on performance. The results indicate that capacitive coupling has a certain influence on the discriminating networks , that Guo＇ s network is less sensitive to the distribution parameter influence, and that circuit element parameter error has little influence on discrimination networks.
出处
《南京师范大学学报（工程技术版）》
CAS
2005年第3期16-19,49,共5页
Journal of Nanjing Normal University(Engineering and Technology Edition)
基金
中国博士后基金资助项目(2004036147)
江苏省博士后资助计划基金资助项目(苏人通[2004]300号)
南京师范大学"211"学科建设经费资助项目(1843202529)
南京师范大学优秀青年教师教学科研奖励计划资助.
关键词
电磁干扰
共模噪声
差模噪声
插入损耗
抑制比
electromagnetic interference （EMI） ,common mode （CM） noise, differential mode （DM） noise, insertion loss, rejection ratio
