Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115035
