NDLI: A new subgridding scheme for two-dimensional FDTD and FDTD (2,4) methods

Content Provider	IEEE Xplore Digital Library
Author	Shu-Hai Sun Choi, C.T.M.
Copyright Year	1965
Abstract	While the available finite-difference time-domain (FDTD) subgridding schemes can improve the solution accuracy over those of the traditional FDTD, it is known to have instability problems. A new subgridding scheme combining FDTD or FDTD(2,4) method with FD-Laplacian interpolation is proposed. By applying subgridding scheme at fine components in a structure, the necessary field resolution can be obtained. In this scheme, FD-Laplacian interpolation is applied in the coarse main grids only or both the coarse main grids and the subgrids, and the error introduced and the floating point operations required can be reduced significantly. The accuracy of the scheme is tested by computing the resonant frequencies of two cavities and solving a scattering problem. The results are compared with solutions for uniformly mesh FDTD method and other FDTD subgridding schemes. The proposed method is stable after 100 000 time steps.
Sponsorship	IEEE Magnetics Society
Starting Page	1041
Ending Page	1044
Page Count	4
File Size	195078
File Format	PDF
ISSN	00189464
Volume Number	40
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite difference methods Time domain analysis Interpolation Maxwell equations Grid computing Resonant frequency Electromagnetic scattering Electromagnetic analysis Sun Testing
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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