电源线滤波器对电子设备EMC影响分析  

Analysis on Influence of Power Line Filter on EMC of Electronic Devices

作　　者：聂磊[1] 汪洋[1,2] 王迎节[1,2] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]西安电子科技大学,陕西西安710071

出　　处：《无线电工程》2010年第7期35-39,共5页Radio Engineering

摘　　要：针对电子设备在电磁兼容(Electromagnetic Compatibility,EMC)测试中遇到的问题,从电源线滤波器内部电路入手,分析了电源线滤波器对电子设备EMC性能的影响。描述了如何根据电子设备内部电路、使用条件,尤其是输入端电路特性,对电源线滤波器的阻抗特性、插入损耗等参数进行正确选择。对于影响电子设备EMC性能的电源线滤波器的安装方法进行了分析、讨论,列举了2个实际测试例子,并对整改措施进行描述和分析。Considering the problems electronic devices met in electromagnetic compatibility （EMC） test, the paper analyzes the influence of power line filter on the EMC of eleetronie devices. It describes how to choose the parameters of impedance characteristics and insertion loss correctly according to the internal circuit, conditions of use and especially the characteristics of input circuit of the device. The installation method of power line filter which also affects the EMC of electronic devices is analyzed and discussed. In the end, two examples of practical test are described, and the correction measures are analyzed.

关 键 词：电源线滤波器 电磁兼容 插入损耗 安装 

分 类 号：TN03[电子电信—物理电子学]