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

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.
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Submitted on : Tuesday, September 23, 2014 - 11:50:46 AM
Last modification on : Thursday, February 7, 2019 - 2:24:31 PM
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Alexandre Chabory, B.P. de Hon, W.H.A Schilders, A.G. Tijhuis. Preconditioned finite-difference frequency-domain for modeling periodic dielectric structures - comparisons with FDTD. EuMC 2008, 38th European Microwave Conference, Oct 2008, Amsterdam, Netherlands. pp 829-832, ⟨10.1109/EUMC.2008.4751581⟩. ⟨hal-01022228⟩

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