基于互易性的系统级电磁耦合快速分析方法、装置和设备

By modeling the cable coupling model of an electronic system as a multi-port antenna system, and utilizing the Fast Fourier Transform and the antenna reciprocity theorem, the electromagnetic coupling response of the electronic system under electromagnetic wave irradiation is solved efficiently and accurately. This solves the problems of low computational efficiency and insufficient accuracy in existing technologies and is suitable for electromagnetic compatibility design of complex electronic systems.

CN122133360BActive Publication Date: 2026-07-17NAT UNIV OF DEFENSE TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Filing Date
2026-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for solving the electromagnetic coupling response of electronic systems under electromagnetic radiation, especially at high frequencies and with complex structures, suffer from low computational efficiency and insufficient accuracy, and cannot accurately determine the coupling terminal response under the worst operating conditions.

Method used

A system-level electromagnetic coupling fast analysis method based on reciprocity is adopted. By modeling the cable coupling model of the electronic system as a multi-port antenna system, the Fast Fourier Transform and the antenna reciprocity theorem are used, combined with the frequency pointer and impedance matrix, to calculate the spectrum and time-domain sequence of the induced voltage, so as to achieve efficient solution of the omnidirectional and fully polarized coupling response.

Benefits of technology

It significantly improves computational efficiency, reduces computational overhead, ensures the accuracy and comprehensiveness of results, and can objectively determine the worst-case coupling terminal response of an electronic system, making it suitable for complex electronic systems.

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Abstract

本发明涉及基于互易性的系统级电磁耦合快速分析方法、装置和设备,属于电磁耦合分析技术领域。方法包括:建模为多端口天线系统;求解入射电磁波复频率序列并建立频率指针;进行发射模式仿真,获取各端口在频率指针所确定频点的远场辐射方向复矢量、端口复电流以及阻抗矩阵;依次计算任意入射方向与极化状态下电磁波产生的等效开路电压复向量;然后计算感应电压复频谱序列;将感应电压复频谱序列代入入射电磁波复频谱序列并进行逆傅里叶变换,得到感应电压时域序列;对预设的不同入射方向与极化状态分别计算获得对应感应电压时域序列并计算电压峰值,从中选取最大值作为最恶劣耦合终端响应。本发明在高效准确求解的同时能够大幅降低计算耗时。
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