用频设备内部线缆辐照响应特性研究

doi:10.16180/j.cnki.issn1007-7820.2021.03.004

Abstract

Abstract:

There are a large number of cables connecting each subsystem and external system inside the frequency-using equipment. In external electromagnetic interference environment, the electromagnetic energy may penetrate through the device casing and be coupled into the device, thereby generating a coupling voltage on the connection cable inside the device and impairing the device performance. In view of this problem, the finite difference time-domain method is used to simulate the housing and internal environment of the chassis. After briefly modeling, the single line, twisted pair line and coaxial line are set up in the cabinet, and the strong electromagnetic pulse is set up outside the cabinet to study the coupling characteristics of the cables under strong radiation interference. The results showed that the coupling voltage of twisted pair is relatively large, followed by single line, and the peak value of both is relatively close. Because of the shield layer, the coupling voltage of coaxial line is much smaller than that of twisted pair and single line.

Key words: cable, electromagnetic pulse irradiation, energy coupling pathway, field conversion, shielding, numerical simulation

CLC Number:

TN973

HE Yue,ZHANG Jianhua,CHEN Yan,HAN Chunyong,SHI Yunlei,SHAO E. Study on Radiation Response Characteristics of Internal Cables of Frequency Equipment[J].Electronic Science and Technology, 2021, 34(3): 18-21.

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Study on Radiation Response Characteristics of Internal Cables of Frequency Equipment

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