Impedance boundary conditions in a hybrid FEM/MOM formulation

Author

Wang, Hao ; Xu, Minjia ; Wang, Chen ; Hubing, Todd

Author_Institution

Univ. of Missouri-Rolla, Rolla, MO, USA

Volume

45

Issue

2

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

198

Lastpage

206

Abstract

When numerically modeling structures with imperfect conductors or conductors coated with a dielectric material, impedance boundary conditions (IBCs) can substantially reduce the amount of computation required. This paper incorporates the IBC in the finite-element method (FEM) part of a FEM/method of moments (FEM/MoM) modeling code. Properties of the new formulation are investigated and the formulation is used to model three practical electromagnetic problems. Results are compared to either measured data or other numerical results. The effect of the IBC on the condition number of hybrid FEM/MoM matrices is also discussed.

Keywords

boundary-value problems; conductors (electric); electromagnetic compatibility; electromagnetic wave scattering; finite element analysis; method of moments; asymmetric stripline structure; dielectric coated conductors; electromagnetic modeling; finite-element method; hybrid FEM/MOM formulation; impedance boundary conditions; imperfect conductors; method of moments; numerical modeling; plane wave scattering; practical electromagnetic problems; printed circuit board power bus structure; Boundary conditions; Conducting materials; Dielectric materials; Electromagnetic measurements; Electromagnetic modeling; Finite element methods; Impedance; Message-oriented middleware; Moment methods; Numerical models;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2003.810813

Filename

1200856