Preconditioned Finite-Difference Frequency-Domain for Modelling Periodic Dielectric Structures - Comparisons with FDTD

Author

Chabory, A. ; de Hon, B.P. ; Schilders, W.H.A. ; Tijhuis, A.G.

Author_Institution

Dept. of Electron., ENAC, Toulouse

fYear

2008

fDate

27-31 Oct. 2008

Firstpage

829

Lastpage

832

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.

Keywords

computational electromagnetics; discrete Fourier transforms; finite difference time-domain analysis; frequency-domain analysis; periodic structures; FDFD; FDTD; FFTs; computational electromagnetics; discrete Fourier transforms; identical spatial grids; modal decoupling approximation; periodic dielectric structures; preconditioned finite-difference frequency-domain method; preconditioner; Computational electromagnetics; Dielectrics; Discrete Fourier transforms; Finite difference methods; Flexible printed circuits; Frequency; Packaging; Periodic structures; Testing; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008. EuMC 2008. 38th European

Conference_Location

Amsterdam

Print_ISBN

978-2-87487-006-4

Type

conf

DOI

10.1109/EUMC.2008.4751581

Filename

4751581