期刊名称：Facta universitatis - series: Electronics and Energetics
印刷版ISSN：0353-3670
电子版ISSN：2217-5997
出版年度：2015
卷号：28
期号：4
页码：625-636
DOI：10.2298/FUEE1504625M
出版社：University of Niš
摘要：In this paper the concept of the strong Finite Element Method (FEM) formulation is explained first. Next, a brief review of strong basis functions that are used for quasi-static analysis of transmission lines with piecewise homogeneous anisotropic medium is presented. As numerical examples, effective relative permittivities of square coaxial lines with two anisotropic layers or one isotropic and one anisotropic layer are calculated by using the Galerkin version of the strong FEM formulation. High accuracy of the method is demonstrated for the layer thicknesses ranging from 0 to 100% of the transmission line height. It is also shown that in the case of the half-filled line, effective relative permittivity computed by the FEM is practically equal to the one obtained by a simple formula.
关键词：strong FEM formulation; quasi-static analysis; anisotropic dielectric; square coaxial line
