The research of current injection probe based on electromagnetic model

Wenjing Zhao, Zhaowen Yan, W. Liu
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引用次数: 1

Abstract

The precise modeling of permeability is the key to 3-D simulation of current injection probe. In this paper, using the short-circuit coaxial cavity to measure magnetic permeability, two equivalent models is carried out, that one of them is single-turn coil model, the magnetic permeability is calculated by integrating inductance, the other is transmission line-lumped parameter mixed model, the permeability is calculated according to the characteristics of transmission line. First-order Debye model can fit the complex permeability spectrum of ferrite, so this paper sets Debye model reasonably in corresponding parameters by comparison of the calculated magnetic spectrum. Core permeability and coil loops are two of the most important factors that affect the performance of current injection probe. After establishing a precise model, this paper focuses on researching the characteristics of these two factors on probe, which provides theoretical support for producing probes with smooth flatness and small insertion loss in wideband.
基于电磁模型的电流注入探头研究
渗透率的精确建模是电流注入探头三维仿真的关键。本文利用短路同轴腔测量磁导率,建立了两种等效模型,其中一种是单匝线圈模型,通过积分电感计算磁导率,另一种是传输线集总参数混合模型,根据传输线的特性计算磁导率。一阶Debye模型可以拟合铁氧体的复磁导率谱,因此本文通过与计算磁谱的比较,合理地设置了相应参数的Debye模型。磁芯磁导率和线圈回路是影响电流注入探头性能的两个重要因素。在建立了精确的模型后,重点研究了这两个因素对探头的影响特性,为在宽带条件下生产平面光滑、插入损耗小的探头提供了理论支持。
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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