Title :
Optimization of the PML efficiency in 3-D TLM method
Author :
Dubard, Jean-Lou ; Pompei, Dominique
Author_Institution :
Lab. d´´Electron., Univ. de Nice-Sophia Antipolis, Valbonne, France
fDate :
7/1/2000 12:00:00 AM
Abstract :
In this paper, the complete derivation of the new perfectly matched layer symmetrical condensed node (PML SCN) recently proposed for the implementation of the Berenger´s PML´s in the three-dimensional transmission-line matrix (TLM) method is given. Several comparisons between TLM and finite-difference time-domain experiments are performed in order to better understand the behavior of PML´s in TLM simulations. In particular, the way to implement the numerical conductivity values with the PML SCN is considered. TLM simulations of waveguide and microstrip antennas are finally presented to prove that the use of this new PML SCN improves the absorbing boundary conditions in the TLM
Keywords :
antenna theory; electromagnetic wave absorption; microstrip antennas; transmission line matrix methods; waveguide theory; 3D TLM method; 3D transmission-line matrix method; Berenger PML; PML SCN; PML efficiency optimisation; TLM simulations; absorbing boundary conditions; finite-difference time-domain experiments; microstrip antennas; numerical conductivity values; perfectly matched layer; symmetrical condensed node; three-dimensional TLM method; waveguide antennas; Boundary conditions; Conductivity; Finite difference methods; Microstrip antennas; Optimization methods; Perfectly matched layers; Symmetric matrices; Time domain analysis; Transmission line matrix methods; Transmission lines;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
