A stable subgridding algorithm and its application to eigenvalue problems

Author

Krishnaiah, K.M. ; Railton, Chris J.

Author_Institution

Centre for Commun. Res., Bristol Univ., UK

Volume

47

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

620

Lastpage

628

Abstract

In this paper, a new and stable subgridding algorithm is proposed for three-dimensional problems which provides subgridding in both space and time. The concept of an equivalent-circuit representation and a novel leapfrog time integration scheme is used to ensure that the algorithm is stable and efficient. Practical applications of this algorithm in the characterization of arbitrarily filled dielectric resonators are reported

Keywords

dielectric resonators; eigenvalues and eigenfunctions; electromagnetic field theory; equivalent circuits; finite difference time-domain analysis; interpolation; numerical stability; waveguide theory; 3D EM problems; arbitrarily filled dielectric resonators; eigenvalue problems; equivalent-circuit representation; leapfrog time integration scheme; stable subgridding algorithm; three-dimensional problems; time interpolation; Application software; Dielectrics; Difference equations; Differential equations; Eigenvalues and eigenfunctions; Finite difference methods; Grid computing; Helium; Maxwell equations; Time domain analysis;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.763164

Filename

763164