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 language | English |
|---|---|
| Title of host publication | 38th European Microwave Conference, 2008 : EuMC 2008 ; 27 - 31 Oct. 2008, Amsterdam, Netherlands |
| Place of Publication | Piscataway |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 829-832 |
| ISBN (Print) | 978-2-87487-005-7 |
| DOIs | |
| Publication status | Published - 2008 |
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