基于电磁兼容预估的加载电缆电磁建模修正与屏蔽接地设计研究  

Research on Electromagnetic Modeling Modification and Shielding Grounding Design of Loaded Cable Based on EMC Prediction

作　　者：马虹 张晓阳 MA Hong;ZHANG Xiaoyang(Electrical Engineering Institute,Nanjing Vocational University of Industry Technology,Nanjing Jiangsu 210023,China;School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing Jiangsu 210094,China)

机构地区：[1]南京工业职业技术大学电气工程学院,江苏南京210023 [2]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《电子器件》2021年第6期1369-1374,共6页Chinese Journal of Electron Devices

基　　金：省工业软件工程技术研究开发中心开放基金项目(ZK19-04-09)。

摘　　要：信息时代,电路设计方面虽然有了较好的电磁兼容设计方法,但随着电子系统与电磁环境日趋复杂,对EMC的设计方法也提出了更高的要求。以最常见电路板中加载电缆辐射EMC预估与抗干扰设计为切入点,进一步对EMC预估的方式及特点进行了研究归纳,对比分析了Hubing模型、暗室法和仿真模拟三种预估方法,修正了Hubing假设,得出了误差值,并设计同轴电缆屏蔽混合接地方式,有效提高了EMC预估的精确性,提升电子通信设备和系统的抗干扰能力,保证优良的电磁兼容特性,进一步降低了电磁污染。In the information age, although there are better EMC design methods in circuit design, with the increasing complexity of electronic system and electromagnetic environment, higher requirements are put forward for EMC design methods. Starting from EMC estimation and anti-interference design of loaded cable radiation in the most common circuit board, the methods and characteristics of EMC estimation are further studied and summarized. Hubing model, darkroom method and simulation method are compared and analyzed, Hubing hypothesis is corrected, and error value is obtained, so as to design coaxial cable shielding hybrid grounding mode, effectively improves the accuracy of EMC prediction, improves the anti-interference ability of electronic communication equipment and system, ensures excellent electromagnetic compatibility characteristics, and further reduces electromagnetic pollution.

关 键 词：电磁兼容 预估法 电磁建模 仿真模拟 

分 类 号：TN975[电子电信—信号与信息处理]