电介质半空间中线结构导体电磁散射的直接时域分析方法  

Direct time-domain method for analyzing scattering from thin-wire structures in the dielectric half-space

作　　者：李琳[1] 李丽娟[1] 高长征[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2007年第6期1-5,18,共6页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50577019);河北省自然科学基金资助项目(E2005000561);长江学者和创新团队发展计划资助项目

摘　　要：针对半空间中线结构导体电磁散射的时域电场积分方程,采用矩量法(MOM)结合时间步进算法(MOT)直接在时域求解导体上的瞬态电流以及空间的瞬态电场。该方法具有求解速度快,时域响应过程机理明晰的特点。针对计算实例的分析结果与文献结果相吻合。The transient scattering from thin wire structures in the presence of a dielectric half-space is analyzed directly in the time-domain （TD） in this paper. The mathematical model is based on time-domain electric field integral equations （TD-EFIE） which are different from Hallen type. The effect of a two-media configuration is taken into account via the space-time reflection coefficient. The resulting integral equations are solved by the method of moment （MOM） combined with the marching on in time （MOT） procedure. After the induced currents are calculated, the far field also can be evaluated. Some illustrative TD computational examples are presented in the paper to verify the presented numerical methods.

关 键 词：时域积分方程 细线天线 细线散射体 电介质半空间 瞬态响应 

分 类 号：TM153[电气工程—电工理论与新技术]