A simple multigrid approach for calculating time-harmonic fields with FDTD

Author

Wu, Xiaoqian ; Klinkenbusch, Ludger

Author_Institution

Zhejiang Educ. Inst., Hangzhou, China

Volume

15

Issue

11

fYear

2005

Firstpage

814

Lastpage

816

Abstract

A coarse-to-fine multigrid algorithm for the finite-difference time-domain (FDTD) method is proposed and applied to calculate the time-harmonic electromagnetic field in the presence of a resonant structure. The obtained results and the related efficiency are compared to those ones achieved with a conventional merely fine-grid FDTD run. The method is easy to implement into an existing FDTD framework, and most efficient if the steady-state electromagnetic field at a given frequency has to be computed within the entire solution domain.

Keywords

computational electromagnetics; electromagnetic fields; finite difference time-domain analysis; coarse-to-fine multigrid algorithm; finite-difference time-domain method; resonant structure; steady-state electromagnetic fields; time-harmonic electromagnetic fields; Discrete Fourier transforms; Electromagnetic analysis; Electromagnetic fields; Electromagnetic scattering; Finite difference methods; Frequency domain analysis; Resonance; Resonant frequency; Steady-state; Time domain analysis; Finite-difference time-domain (FDTD);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2005.859005

Filename

1525084