Equivalence theorem boundary conditions for FDTD formulations

Author

Barmada, Sami ; Musolino, Antonino ; Raugi, Marco

Author_Institution

Dipt. Sistemi Elettrici e Automazione, Univ. di Pisa, Italy

Volume

40

Issue

2

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

1049

Lastpage

1052

Abstract

A boundary condition for the truncation of the grid in finite-difference time-domain (FDTD) formulations is presented. The proposed technique restricts the computational domain by truncating the FDTD grid close to the scattering objects. By using the equivalence theorem, the proposed procedure yields a coupling between the region outside the boundary (exterior problem) and inside the boundary (interior problem). A resulting hybrid FDTD-method of moments technique is used to obtain a numerical solution of the coupled problems. Numerical applications demonstrate the validity of the proposed procedure.

Keywords

boundary-value problems; computational electromagnetics; equivalence classes; finite difference time-domain analysis; method of moments; FDTD formulations; boundary conditions; equivalence theorem; exterior problem; finite-difference time-domain formulations; hybrid methods; interior problem; method-of-moments; numerical solution; Boundary conditions; Equations; Finite difference methods; Grid computing; Magnetic fields; Moment methods; Perfectly matched layers; Scattering; Surface waves; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.824901

Filename

1284597