 |
Optimizing the FDFD Method in Order to Minimize PML-Related Numerical Problems
P.K. Talukder, F.-J. Schmückle, R. Schlundt1, W. Heinrich
Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
1 Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin, D-10117, Germany
Published in:
IEEE MTT-S Int. Microwave Symp. Dig., 2007, 293-296.
© Copyright 2007 IEEE - All Rights Reserved. Personal use of this material is permitted. However, permission to reprint/republish this material for
advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists,
or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Abstract:
Using the PML boundary condition in the finitedifference
frequency-domain (FDFD) method can significantly
affect the numerical condition of the resulting system of
equations, causing a drastic increase in the CPU time. This paper
presents in-depth investigations of the underlying effects as well
as measures to improve numerical convergence. The results are
verified for various microwave structures such as a flip-chip
interconnect, a multi-layer transition, and a patch antenna. They
apply not only to the FDFD method but similarly to other
frequency-domain as well as time-domain approaches.
Index Terms:
PML, finite-difference, Convergence.
Full version in pdf-format.
|
|
