Common and differential mode characterization of EMI power-line filters from S-parameters measurements

J. Regué, M. Ribó, D. Duran, D. Badia, A. Perez
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引用次数: 18

Abstract

A new technique to predict the small signal behavior of EMI power-line filters is presented. This technique is based on S-parameter measurements performed at all the terminals of the power-line filter. These measured S-parameters are converted to a set of modal S-parameters using the presented analytical matrix expressions. The modal S-parameter matrix completely models the small signal behavior of the power-line filter in terms of line and load common and differential modes. From this matrix, information such as common and differential mode insertion loss, modal behavior of the filter at different line and load impedances, and energy transfer between any combination of modes can be obtained.
来自s参数测量的EMI电源线滤波器的共模和差分模特性
提出了一种预测电磁干扰电力线滤波器小信号特性的新方法。该技术是基于在电力线滤波器的所有终端进行的s参数测量。利用给出的解析矩阵表达式将这些测量的s参数转换为一组模态s参数。模态s参数矩阵完全模拟了电力线滤波器在线路和负载共模和差分模态下的小信号特性。从该矩阵中可以得到共模和差模插入损耗、滤波器在不同线路和负载阻抗下的模态特性以及任意模态组合之间的能量传递等信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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