系统级电磁兼容分析的离散技术及应用综述

Discrete Technology of Electromagnetic Compatibility Analysis at The System Level and Applications Overview

介绍了一种系统级电磁兼容(EMC)分析技术—离散非线性分析(Discrete Nonlinear Analysis,DNA)的发展现状,该技术起源于线性离散EMC分析技术,后者是为开发系统内电磁兼容分析程序(IntrasystemElectromagnetic Compatibility Analysis Program,IEMCAP)所提出的方法。DNA技术可应用于以下方面:在极端恶劣电磁环境(EME)中(调制信号数目高达100 000)对无线电发射和接收建模;在一次仿真中需要综合考虑各种效应,包括线性(增益、衰减、滤波等)和非线性(互调、减敏、交调、相互混频、调幅调相转换等)效应以及高阶的非线性响应(25阶或更高);进行快速EMC分析(电磁环境越复杂,非线性效应阶数越高,DNA方法相对于传统方法的计算优势越大;自动搜寻非线性干扰源。

Presents an overview of the current state of the art in a system-level electromagnetic compatibility(EMC)analysis technology called the discrete nonlinear analysis(DNA).This technology is a fundamental evolution of a linear discrete EMC analysis;the last one was developed in the framework of the Intrasystem Electromagnetic Compatibility Analysis Program(IEMCAP).The DNA technology provides the following capabilities:to model the radio transmission and reception in an extremely severe(up to 100000 of modulated signals)electromagnetic environment(EME);to consider both the linear effects(gain,attenuation,filtering)and the nonlinear effects of various types(intermodulation,desensitization,cross-modulation,reciprocal mixing,amplitude-to-phase conversion)and high orders(up to the order 25 and higher)in one common simulation procedure;to carry out the EMC analysis quickly(the DNA's computational advantage over traditional techniques grows rapidly with increasing EME complexity and with increasing order of the nonlinear effects);to automatize the search of nonlinear interference sources.