Analysis of general lossy inhomogeneous and anisotropic waveguides by the finite-element method (FEM) using edge elements

Author

Nuño, Luis ; Balbastre, Juan V. ; Castañé, Héctor

Author_Institution

Dept. de Commun., Univ. Politecnica de Valencia, Spain

Volume

45

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

446

Lastpage

449

Abstract

Several finite element formulations based on edge elements have been developed in recent years, avoiding the appearance of spurious modes in waveguides. However, no formulation of this kind dealing with general lossy inhomogeneous and anisotropic waveguides has been found in the literature. In this paper, a new finite element scheme for the most general linear waveguides has been derived from vector wave equations via a Galerkin procedure. In this formulation, triangular and quadrilateral edge elements have been used in order to avoid the spurious solutions. Furthermore, the final eigensystem involves only very sparse matrices, thus allowing important savings in time and memory

Keywords

Galerkin method; electromagnetic wave propagation; finite element analysis; sparse matrices; waveguide theory; FEM; Galerkin procedure; anisotropic waveguides; edge elements; eigensystem; finite-element method; general linear waveguides; lossy inhomogeneous waveguides; quadrilateral edge elements; sparse matrices; triangular edge elements; vector wave equations; Anisotropic magnetoresistance; Boundary conditions; Central Processing Unit; Electromagnetic waveguides; Finite element methods; Integral equations; Magnetic anisotropy; Partial differential equations; Perpendicular magnetic anisotropy; Vectors;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.563347

Filename

563347