Electromagnetic Leakage from Shielded Video Cables in Computer Systems

Han Fang

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Electromagnetic Leakage from Shielded Video Cables in Computer Systems

更新时间：2025-12-08

- Electromagnetic Leakage from Shielded Video Cables in Computer Systems
- Acta Electronica Sinica Issue 3, Pages: 45-49(1993)
- 作者机构：
  
  北方交通大学通信与控制工程系,北京,100044
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1993
- 稿件说明：
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[1]韩放.计算机视频屏蔽电缆的电磁泄漏[J].电子学报,1993(03):45-49.

Han Fang. Electromagnetic Leakage from Shielded Video Cables in Computer Systems[J]. Acta Electronica Sinica, 1993, (3): 45-49.
[1]韩放.计算机视频屏蔽电缆的电磁泄漏[J].电子学报,1993(03):45-49. DOI：

Han Fang. Electromagnetic Leakage from Shielded Video Cables in Computer Systems[J]. Acta Electronica Sinica, 1993, (3): 45-49. DOI：

摘要

本文对视频（屏蔽）电缆的辫接效应（Pigtail Effect）及其辐射机制

进行了理论和实验研究;利用天线和传输线理论提出了屏蔽电缆共模辐射的物理模型和数学公式;分析和验证了辫接效应是导致屏蔽电缆产生辐射的主要诱因;提出了防护和抑制这种共模辐射的原理和手段。

Abstract

In the paper

the mechanism of radiated emission from a shielded cablecaused by the pigtail effect

is discussed and presented by treating the cable as equivalent transmission line and dipole antenna. It is observed that the radiated emission from PC computers is produced mainly by common mode current along the cable. The results of computation and measurement for the radiated emission are introduced

and shown in good agreement with theoretical analysis.

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