Finite element computation of antenna impedance including feed modeling

Author

Wang, Jian-S He

Author_Institution

Ansys Inc., Houston, PA, USA

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1500

Lastpage

1503

Abstract

In this paper, we discuss the frequency-domain FEM computation of antenna input impedance using curved, mixed-shaped “edge” elements. The antenna feed is treated as a waveguide and is included as part of the model. The feeding waveguide is truncated with a first-order absorbing boundary condition and the solution domain with a second-order condition. A monopole antenna on top of a conducting box is analyzed and good impedance results are obtained

Keywords

antenna feeds; antenna radiation patterns; electric impedance; finite element analysis; frequency-domain analysis; monopole antennas; waveguide theory; antenna feed; antenna impedance; conducting box; curved mixed-shaped edge elements; feed modeling; feeding waveguide; finite element computation; first-order absorbing boundary condition; frequency-domain FEM computation; input impedance; monopole antenna; second-order condition; solution domain; Antenna feeds; Boundary conditions; Coaxial components; Conductivity; Electromagnetic scattering; Finite element methods; Integral equations; Light scattering; Surface impedance; Surface waves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582545

Filename

582545