Optimization of the PML efficiency in 3-D TLM method

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 finit...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2000-07, Vol.48 (7), p.1081-1088
Main Authors: Dubard, J.-L., Pompei, D.
Format: Article
Language:English
Subjects:
Boundary conditions
Computer simulation
Conductivity
Derivation
Electromagnetism
Engineering Sciences
Finite difference method
Finite difference methods
Mathematical analysis
Mathematical models
Microstrip antennas
Microwaves
Optimization
Optimization methods
Perfectly matched layers
Symmetric matrices
Time domain analysis
Transmission line matrix methods
Transmission lines
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Summary: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.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.848490