Application of absorbing boundary conditions to TLM simulations

Author

Simons, N.R.S. ; Bridges, E.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada

fYear

1990

fDate

7-11 May 1990

Firstpage

2

Abstract

It is demonstrated that the traditional method of match terminating the TLM (transmission line matrix) mesh does not accurately model a free space boundary. It is found that the match termination of the TLM mesh is accurate only if waves strike the boundary with normal incidence. A successful implementation of one type of FD-TD (finite-difference time-domain) absorbing boundary condition in TLM simulations is described. This boundary condition is superior to the traditional match termination of the TLM mesh.<>

Keywords

boundary-value problems; difference equations; electromagnetic wave absorption; impedance matching; matrix algebra; time-domain analysis; transmission line theory; FD-TD; TLM mesh; TLM simulations; absorbing boundary conditions; finite-difference time-domain; free space boundary; match termination; transmission line matrix; Application software; Boundary conditions; Circuit simulation; Computational modeling; Extrapolation; Microstrip antennas; Partial differential equations; Reflection; Space vector pulse width modulation; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115035

Filename

115035