Efficient analysis of dielectric radomes using multilevel fast multipole algorithm with CRWG basis  

作　　者：Que Xiaofeng Nie Zaiping Hu Jun 

机构地区：[1]School of Electronic Engineering, Univ. of Electronic Science and Technology of China, Chengdu 610054, P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2008年第1期81-87,共7页系统工程与电子技术（英文版）

基　　金：the National Natural Science Foundation of China (60431010)

摘　　要：A full-wave analysis of the electromagnetic problem of a three-dimensional （3-D） antenna radiating through a 3-D dielectric radome is preserued. The problem is formulated using the Poggio-Miller-Chang-Harrington- Wu（PMCHW） approach for homogeneous dielectric objects and the electric field integral equation for conducting objects. The integral equations are discretized by the method of moment （MoM）, in which the conducting and dielectric surface/interfaces are represented by curvilinear triangular patches and the unknown equivalent electric and magnetic currents are expanded using curvilinear RWG basis functions. The resultant matrix equation is then solved by the multilevel fast multipole algorithm （MLFMA） and fast far-field approximation （FAFFA） is used to further accelerate the computation. The radiation patterns of dipole arrays in the presence of radomes are presented. The numerical results demonstrate the accuracy and versatility of this method.A full-wave analysis of the electromagnetic problem of a three-dimensional （3-D） antenna radiating through a 3-D dielectric radome is preserued. The problem is formulated using the Poggio-Miller-Chang-Harrington- Wu（PMCHW） approach for homogeneous dielectric objects and the electric field integral equation for conducting objects. The integral equations are discretized by the method of moment （MoM）, in which the conducting and dielectric surface/interfaces are represented by curvilinear triangular patches and the unknown equivalent electric and magnetic currents are expanded using curvilinear RWG basis functions. The resultant matrix equation is then solved by the multilevel fast multipole algorithm （MLFMA） and fast far-field approximation （FAFFA） is used to further accelerate the computation. The radiation patterns of dipole arrays in the presence of radomes are presented. The numerical results demonstrate the accuracy and versatility of this method.

关 键 词：multilevel fast multipole algorithm antenna radome curvilinear RWG basis PMCHW formulation fast far-field approximation. 

分 类 号：TN82[电子电信—信息与通信工程]