Absorbing boundary condition for 3D finite element models with magnetic vector and time-integrated scalar potentials

Author

Brauer, J.R. ; Jin-Fa Lee ; Mittra, R.

Author_Institution

MacNeal-Schwendler Corp., Milwaukee, WI, USA

fYear

1992

fDate

18-25 June 1992

Firstpage

2043

Abstract

An absorbing boundary condition (ABC) is applied to surfaces of three-dimensional electromagnetic finite-element models. The finite elements are based on nodal values of magnetic vector potential and time-integrated scalar potential. The ABC is based upon the Wilcox expansion. Results for test cases of both axisymmetric and fully three-dimensional models of a quarter wavelength wire monopole over a ground plane are compared with theory, and the reflections of the ABC are shown to be approximately 40 dB down.<>

Keywords

antenna theory; boundary-value problems; electric potential; electromagnetic wave absorption; finite element analysis; monopole antennas; vectors; 3D finite element models; ABC; Wilcox expansion; absorbing boundary condition; axisymmetric models; ground plane; magnetic vector potential; quarter wavelength wire monopole; reflections; time-integrated scalar potentials; Boundary conditions; Electromagnetic modeling; Finite element methods; Frequency domain analysis; Integral equations; Magnetic domains; Reflection; Testing; Transmission line matrix methods; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221466

Filename

221466