Absorbing boundary conditions for the TLM method

Author

Morente, Juan A. ; Porti, Jorge A. ; Khalladi, Mohsine

Author_Institution

Dept. de Fisica Aplicada, Granada Univ., Spain

Volume

40

Issue

11

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

2095

Lastpage

2099

Abstract

The numerical behavior of different absorbing boundary conditions when applied to the transmission-line modeling (TLM) method is presented. These conditions may be classified into three different groups according to the way they are derived. The first group is obtained by discretizing one-way analytical conditions derived for the analytical wave equation. The second group is a set of discrete conditions directly obtained for the discrete wave equation. The last group is based on appropriate reflection coefficients derived purely from transmission-line theory. Because of their different behaviors, the numerical study is explicitly carried out for both two- and three-dimensional free-space scattering problems

Keywords

boundary-value problems; electromagnetic wave scattering; transmission line theory; EM problems; TLM method; absorbing boundary conditions; analytical wave equation; discrete wave equation; free-space scattering problems; reflection coefficients; transmission-line modeling; Boundary conditions; Electromagnetic modeling; Electromagnetic reflection; Electromagnetic scattering; Electromagnetic waveguides; Finite difference methods; Helium; Magnetic devices; Partial differential equations; Transmission lines;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.168768

Filename

168768