一种共差模信号分离器设计

何梦之

摘 要：本文設计了一款基于射频变压器的共差模信号分离器，针对射频变压器在高频区域隔离度不够的缺点，引入差模滤波电容以及共模扼流圈从而提高了在高频区域的性能。首先通过电路仿真分析了该装置的可行性，之后组装装置进行了实物测试，证明了该分离器对共差模信号分离的有效性。

关键词：电磁兼容 共模信号 差模信号 信号分离器

A Design of Common Differential Mode Signal Splitter

He Mengzhi

Abstract：This paper designs a common differential mode signal separator based on RF transformers. Aiming at the shortcomings of insufficient isolation of RF transformers in the high frequency area， differential mode filter capacitors and common mode chokes are introduced to improve the performance of high frequency area. First， the feasibility of the device was analyzed through circuit simulation， and then the device was assembled for physical testing， which proved the effectiveness of the splitter for common differential mode signal separation.

Key words：electromagnetic compatibility， common mode signal， differential mode signal， signal separator