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SSOR preconditioned GMRES for the FEM analysis of waveguide discontinuities with anisotropic dielectric

✍ Scribed by R. S. Chen; X. W. Ping; D. X. Wang; Edward K. N. Yung

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
201 KB
Volume
17
Category
Article
ISSN
0894-3370

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✦ Synopsis

Abstract

The anisotropic media and active properties of the perfectly matched layer (PML) absorbers significantly deteriorate the finite element method (FEM) system condition and as a result, convergence of the iterative solver is substantially slowed down. To address this issue, the symmetric successive over‐relaxation (SSOR) preconditioning scheme is applied to the generalized minimal residual (GMRES) for solving a large sparse and non‐symmetric system of linear equations resulting from the analysis of ferrite waveguide device by use of edge‐based FEM. Consequently, this preconditioned GMRES (PGMRES) approach can reach convergence ten times faster than GMRES for the typical structures. Copyright © 2004 John Wiley & Sons, Ltd.

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