A stable FDTD subgridding method for both spatial and temporal spaces

Author

Chow, Peter ; Kubota, Tetsuyuki ; Namiki, Takefumi

Author_Institution

Fujitsu Labs. of Eur., Hayes

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

The proposed FDTD subgridding method is stable in both spatial and temporal spaces. Late-time instability has been resolved by separating the space and time interpolation interfaces from conventional collocated to same position. Numerical experiments conducted in 2D of 10 million time steps have no instability problem after a minimum gap distance for various refinement factors. Compare to existing subgridding methods the new method is not restricted to a single refinement factor and need no special treatment at material interfaces. This should open the FDTD subgridding method to more applications.

Keywords

computational electromagnetics; finite difference time-domain analysis; electromagnetic phenomena; material interfaces; minimum gap distance; spatial spaces; stable FDTD subgridding method; temporal spaces; Europe; Finite difference methods; Interpolation; Laboratories; Maxwell equations; Numerical stability; Refining; Space technology; Spatial resolution; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619137

Filename

4619137