抑制开关电源高频噪声的电磁干扰滤波器设计方法  

Design of EMI Filter for Suppressing High Frequency Electromagnetic Emissions

作　　者：张逸成[1] 苏丹[1] 朱学军[1] 姚勇涛[1] 

机构地区：[1]同济大学电气工程系,上海教授博士生导师200331

出　　处：《城市轨道交通研究》2007年第9期33-36,共4页Urban Mass Transit

摘　　要：介绍了电磁干扰滤波器的基本结构,构成滤波器的元器件以及插入损耗的计算方法。通过理论计算,对标准情况和实际电磁兼容测试情况下滤波器的插入损耗进行了比较。并通过试验验证,在抑制高频噪声时,可直接参考滤波器在50/50Ω标准情况下的插入损耗。This paper presents the basic structure, components and insertion loss of EMI filters, calculates the insertion losses under the standard condition or under the practical electromagnetic compatibility （EMC） test. After the verification through EMC test, this paper comes to the conclusion that the insertion loss of EMI filter under the 50/50 Ω standard condition can serve as a good reference for suppressing high frequency electromagnetic emission.

关 键 词：开关电源 电磁干扰滤波器 插入损耗 

分 类 号：TN713[电子电信—电路与系统]