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Preconditioned finite-difference frequency-domain for modelling periodic dielectric structures - comparisons with FDTD

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Finite-difference techniques are very popular and versatile numerical tools in computational electromagnetics. In this paper, we propose a preconditioned finite-difference frequency-domain method (FDFD) to model periodic structures in 2D and 3D. The preconditioner follows from a modal decoupling approximation. Its use involves discrete Fourier transforms (via FFTs). We have set FDFD against an FDTD package for a typical test case, with identical spatial grids. We have observed that computation times for a full frequency sweep are comparable, while the accuracy is slightly better with FDFD.
Original languageEnglish
Title of host publication38th European Microwave Conference, 2008 : EuMC 2008 ; 27 - 31 Oct. 2008, Amsterdam, Netherlands
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages829-832
ISBN (Print)978-2-87487-005-7
DOIs
Publication statusPublished - 2008

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