随机多导体传输线电磁辐射的统计分析

doi:10.13700/j.bh.1001-5965.2020.0006

北京航空航天大学学报 ›› 2021, Vol. 47 ›› Issue (1): 7-14.doi: 10.13700/j.bh.1001-5965.2020.0006

随机多导体传输线电磁辐射的统计分析

燕学智, 史册, 赵昱, 杨锦鹏

吉林大学通信工程学院, 长春 130022

收稿日期:2020-01-04 发布日期:2021-01-29
通讯作者: 赵昱 E-mail:yzhao@jlu.edu.cn
作者简介:燕学智,男,博士,教授,硕士生导师。主要研究方向:电磁兼容、人机交互;史册,男,硕士研究生。主要研究方向:电磁兼容;赵昱,女,博士,副教授。主要研究方向:电磁兼容;杨锦鹏,男,博士研究生。主要研究方向:电磁兼容。
基金资助:
装备预先研究项目（30105030302）

Statistical analysis of electromagnetic radiation from random multi-conductor transmission lines

YAN Xuezhi, SHI Ce, ZHAO Yu, YANG Jinpeng

College of Communication Engineering, Jilin University, Changchun 130022, China

Received:2020-01-04 Published:2021-01-29

摘要/Abstract

摘要： 针对含随机参数的互连线缆电磁辐射计算问题，提出了一种基于混沌多项式展开和偶极子近似法的多导体传输线电磁辐射统计分析方法。利用正交多项式的性质对随机多导体传输线方程进行展开，结合边界条件求解得到传输线沿线电流，利用偶极子近似法和镜像法计算传输线电流引起的总辐射。仿真结果验证了所提方法的准确性，与传统的蒙特卡罗方法相比，计算效率得到大幅度提高。所提方法对于预测系统内含随机参数的线缆辐射场，评估线缆电磁辐射和检验系统性能指标，有一定的参考价值。

关键词: 电磁辐射, 混沌多项式展开, 偶极子近似法, 多导体传输线系统, 统计分析

Abstract: In this paper, a statistical algorithm based on polynomial chaos expansion and dipole approximation for electromagnetic radiation calculation of interconnected cables with random parameters is proposed.In this method, orthogonal polynomials are used to expand the equation of the multi-conductor transmission line with random coefficients, the current along the transmission line is obtained by combining the boundary conditions, and then the electric dipole approximation and the mirror image method are used to calculate the total radiation caused by the current of the transmission line. Simulation results verify the accuracy of the proposed method, and the computational efficiency is greatly improved compared with the traditional Monte Carlo method. This method has certain reference value for predicting cable radiation field with random parameters, evaluating cable electromagnetic radiation and testing system performance index.

Key words: electromagnetic radiation, polynomial chaos expansion, dipole approximation method, multi-conductor transmission line system, statistical analysis

中图分类号:

O441.4

燕学智, 史册, 赵昱, 杨锦鹏. 随机多导体传输线电磁辐射的统计分析[J]. 北京航空航天大学学报, 2021, 47(1): 7-14.

YAN Xuezhi, SHI Ce, ZHAO Yu, YANG Jinpeng. Statistical analysis of electromagnetic radiation from random multi-conductor transmission lines[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(1): 7-14.

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随机多导体传输线电磁辐射的统计分析

Statistical analysis of electromagnetic radiation from random multi-conductor transmission lines

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