电源共模电容接地对辐射发射的影响  

The Influence of Common-Mode Capacitor Grounding to Radiation Emission

作　　者：徐加征[1] 张本军[1] Xu Jia-zheng;Zhang Ben-jun(ZTE CORPORATION,Jiangsu Nanjing 210012)

机构地区：[1]中兴通讯股份有限公司

出　　处：《电子质量》2019年第11期95-98,共4页Electronics Quality

摘　　要：共模电容是电路设计中经常用的器件之一,共模电容不仅能抑制传导发射噪声,也能很好地抑制低频辐射发射。在具体的设计中,除了要注意共模电容的个数和摆放位置外,共模电容的接地也是影响其性能的重要因素。该文通过一个案例,说明了共模电容低阻抗共模泄放路径对辐射发射的影响,供电路设计人员参考。A common-mode capacitor is one of the components used in circuit design.A common-Mode capacitor can not only suppress conducted emission noise,but also properly suppress low-frequency radiation emission.In the specific design,in addition to the number and location of common-mode capacitors,the grounding of common-mode capacitors is also an important factor affecting their performance.This document describes the impact of the low-impedance common-mode path of a common-mode capacitor to radiation emission.

关 键 词：共模电容 共模辐射 差模辐射 接地 辐射发射 

分 类 号：TM937[电气工程—电力电子与电力传动]