Finite-element time-domain analysis of axisymmetrical radiators

Author

Ali, H.O. ; Costache, G.

Author_Institution

Dept. of Electr. Eng., Ottawa Univ., Ont., Canada

Volume

42

Issue

2

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

272

Lastpage

275

Abstract

A method of analysis which permits the computation of electromagnetic fields directly in the time domain using the finite element method (FEM) is presented. The method considers coaxially-driven axisymmetrical structures. A new way of implementing absorbing boundary conditions for the coaxial feed is discussed. The method has been successfully used to model coaxially-driven axisymmetrical monopole antennas for a Gaussian pulse excitation. Generally, the results obtained show good agreement with previously published numerical and experimental data

Keywords

antenna feeders; antenna radiation patterns; antenna theory; finite element analysis; monopole antennas; time-domain analysis; FEM; Gaussian pulse excitation; absorbing boundary conditions; axisymmetrical radiators; coaxial feed; coaxially-driven axisymmetrical monopole antennas; coaxially-driven axisymmetrical structures; electromagnetic fields; finite-element time-domain analysis; Coaxial components; Equations; Feeds; Finite difference methods; Finite element methods; Optical propagation; Optical transmitters; Radar antennas; Radio transmitters; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.277224

Filename

277224