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

Volume

48

Issue

7

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1081

Lastpage

1088

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.848490

Filename

848490