Optimizing the FDFD Method in Order to Minimize PML-Related Numerical Problems
P.K. Talukder, F.-J. Schmückle, R. Schlundt1, W. Heinrich
Published in:
IEEE MTT-S Int. Microw. Symp. Dig., Honolulu, HI, Jun. 3-8, pp. 293-296 (2007).
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.
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
Index Terms:
PML, finite-difference, Convergence.
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