Behavior modeling on the pim performance in connectors using fea method and circuit simulation

被引：0

作者：

Dun S. ^{[1
]}

Jin Q.Y. ^{[2
]}

Bi L.Y. ^{[3
]}

Wang Z. ^{[3
]}

Xie J. ^{[1
]}

机构：

[1] The 54th Research Institute of CETC, Shijiazhuang

[2] School of Information Science and Technology, Southwest Jiaotong University, Chengdu

[3] School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing

来源：

Journal of China Universities of Posts and Telecommunications | 2021年 / 28卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Circuit model; Coaxial connector; Finite element analysis (FEA); Passive intermodulation (PIM);

D O I：

10.19682/j.cnki.1005-8885.2021.0007

中图分类号：

学科分类号：

摘要：

Coaxial connectors are generally regarded as a kind of potential passive non-linear source when magnetic materials are applied in the coating or under-plating, which may result in serious passive intermodulation ( PIM) interference and degrade the communication quality. In this paper, the effect of connector coating materials on the PIM is theoretically studied using finite element analysis (FEA) and circuit simulations. Considering the material composition both in central and outer conductor, an FEA model of connector is proposed to identify the current density in magnetic material region. An equivalent circuit model expressing the nonlinearity in coating material is developed, coupled with the non-linear transfer model. The PIM product power of the connector with related material configuration is predicted by harmonic balance simulation. Intentionally design connector samples are used in PIM tests and the measurement results are consistent with the theoretical predictions. The PIM performance in coaxial connectors is demonstrated from the perspectives of both modeling analysis and experimental investigations. © 2021, Beijing University of Posts and Telecommunications. All rights reserved.

引用

页码：87 / 93

页数：6

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