基于等效建模的多尺度电磁计算技术研究进展  

Research Progresses on Multi-scale Electromagnetic Computation Based on Equivalent Modeling

作　　者：赵华鹏[1] 胡俊[1] Zhao Huapeng;Hu Jun

机构地区：[1]电子科技大学

出　　处：《安全与电磁兼容》2022年第4期21-27,47,共8页Safety & EMC

基　　金：国家自然科学基金(62071110,61721001,62031010)。

摘　　要：随着设计复杂度的提高和工作频率的提升,无线部件与系统的多尺度特性日益显著,它们的电磁仿真与优化均受制于多尺度电磁计算。在多尺度电磁计算中,精细结构的存在导致局部网格过密,这造成了系统矩阵病态和计算效率低下的问题。等效建模技术利用小尺度结构等效模型进行多尺度电磁计算,从而避免局部网格过密导致的系统矩阵病态问题。总结了多尺度电磁计算及等效建模的研究背景与现状,介绍了课题组针对多尺度电磁计算涉及的金属细线结构、低剖面天线等典型小尺度结构提出的等效模型,展示了等效建模技术在多尺度电磁计算中的应用及优势,并讨论了其未来发展趋势。With the increase of design complexity and the rise of working frequency,the multi-scale feature of wireless components and systems is more and more remarkable,so their electromagnetic simulation and optimization are subject to multi-scale electromagnetic computation.In multiscale electromagnetic computation,fine structures lead to over-dense local mesh,which makes the system matrix ill-conditioned and the computational efficiency low.Equivalent modeling technique utilizes the equivalent model of small-scale structure to perform multi-scale electromagnetic computation,and thus avoids illness of system matrix caused by over-dense local mesh.This paper summarizes the research background and status of multi-scale electromagnetic computation and equivalent modeling,and introduces the equivalent models proposed by the authors’group for typical small scale structures often encountered in multi-scale electromagnetic computation,including conducting thin wire structures,low profile antennas,etc.The application and advantages of equivalent modeling technique are demonstrated,and its future development is discussed.

关 键 词：多尺度电磁计算 等效建模 计算电磁学 电磁混响室 电大平台 

分 类 号：O441[理学—电磁学]