Improved Hybrid-Domain MoM for Scattering and Radiation Problems Including 3D Dielectrics by Using Orthogonal Polynomial Expansion

概要

論文の詳細を見る
This report presents an integral equation approach with a new solution method to obtain external scattered fields and internal induced fields inside a dielectric body in two different cases. In one case, the dielectric object is illuminated by a plane wave and in the other case; it is located in close proximity of a thin-wire antenna. The tensor-volume integral equation (TVIE) is adopted for the former case and a system of coupled tensor-volume/line integral equations is applied for the latter problem. These problems have been previously investigated with an efficient Galerkin-based formulation using combined entire-domain and subdomain expansion using three-dimensional power polynomial basis functions. It has been shown that a compromise between accuracy and efficiency is achieved that by combining the entire-domain and subdomain basis functions. As an improvement, in this article, we apply a modified Legendre polynomial basis function which leads to an almost orthogonal expansion of the unknown polarization current inside the dielectric body. This basis function is derived from orthogonal Legendre polynomial, which is modified to impose the continuity condition of the currents between neighboring elements. This allows the use of high-order basis functions without introducing ill-conditioning of the resulting MoM matrix. Numerical results verify the accuracy of the method and confirm the condition number of the MoM matrix obtained with this new basis is much lower than 3D power polynomial function.
社団法人電子情報通信学会の論文
2006-04-13

Improved Hybrid-Domain MoM for Scattering and Radiation Problems Including 3D Dielectrics by Using Orthogonal Polynomial Expansion

スポンサーリンク

概要

著者

関連論文

スポンサーリンク