Title :
A simple multigrid approach for calculating time-harmonic fields with FDTD
Author :
Wu, Xiaoqian ; Klinkenbusch, Ludger
Author_Institution :
Zhejiang Educ. Inst., Hangzhou, China
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);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.859005
