%0 Journal Article
%T Investigation on EM scattering by electrically large complex cavity using IPO/FEM hybrid method<br>电大尺寸复杂结构腔体电磁散射的IPO/FEM混合法研究
%A He Xiaoxiang
%A Xu Jinping
%A Gu Changqing
%A <br>何小祥
%A 徐金平
%A 顾长青
%J 电子与信息学报
%D 2003
%I 
%X In this paper, a novel hybrid approach is proposed in which Iterative Physical Optics (IPO)subdomain splicing technique is combined with edge-based finite element method. It is applied to the analyses of electromagnetic scattering characteristics of electrically large complex cavities. IPO approach is applied for the region where it is suitable to use high frequency method; the edge-based finite element method is employed for the region where complex structures or complex materials are located. At the interface, the field continuous condition is applied to realize the coupling of the two regions. To verify the new approach, an open-ended empty rectangular cavity and cavity loaded with a metal cuboid are analyzed. The numerical results are in agreement with the published data and those obtained by FDTD. Good convergence behavior is observed. Moreover, complex cavities where three layers of lossy dielectric or a metal cuboid is loaded at the bottom are analyzed. The results show that the proposed hybrid approach is efficient for analyzing the electromagnetic scattering characteristic of electrically large complex cavity.
%K Hybrid approach
%K Iterative physical optics
%K Subdomain splicing
%K Finite element method
%K EM scattering<br>电大尺寸复杂结构腔体
%K IPO／FEM混合法
%K 物理光学迭代法
%K 子域连接法
%K 有限元法
%K 电磁散射
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=AE1363461D59E2BA&yid=D43C4A19B2EE3C0A&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=002786F01A86D891&eid=82722E2B785EBF0D&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=5&reference_num=9