Fast Transform based Preconditioner for 3D Finite-Difference Frequency-Domain - Application to Waveguides

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Samenvatting

The fields scattered by dielectric objects placed inside metallic waveguides can efficiently be computed via a finite-difference frequency-domain (FDFD) method. This involves large, sparse linear systems of equations that may be solved using preconditioned Krylov-subspace methods. We propose a preconditioner that uses fast discrete trigonometric transforms and is based on a physical approximation. Simulations show significant gain in terms of iteration count and computation time. Moreover, with the new preconditioner, the required number of iterations is independent of the grid size.
Originele taal-2Engels
TitelProceeding of the 2007 International Conference on Electromagnetics in Advanced Applications (ICEAA 2007) 17-21 September 2007, Torino, Italy
RedacteurenR.D. Graglia
Plaats van productieTorino, Italy
UitgeverijPolitecnico di Torino
Pagina's544-547
ISBN van geprinte versie978-1-424-40766-8
DOI's
StatusGepubliceerd - 2007
Evenement10th International Conference on Electromagnetics in Advanced Applications (ICEAA 2007) - Torino, Italië
Duur: 17 sep. 200721 sep. 2007
Congresnummer: 10

Congres

Congres10th International Conference on Electromagnetics in Advanced Applications (ICEAA 2007)
Verkorte titelICEAA 2007
Land/RegioItalië
StadTorino
Periode17/09/0721/09/07
AnderICEAA 2007, Torino, Italy

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