Multi-Region Finite-Difference Time-Domain (MR-FDTD) Based on Domain-Optimal Green´s Functions

Author

Yuan Qu Lin ; Weile, D.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA

Volume

61

Issue

5

fYear

2013

fDate

5/1/2013 12:00:00 AM

Firstpage

2655

Lastpage

2663

Abstract

A multi-region (MR-) finite-difference time-domain (FDTD) scheme for solving two-dimensional sparsely-populated problems based on domain-optimal Green´s functions is proposed. The scheme uses a discrete Green´s function (DGF) on the FDTD lattice to truncate the local sub-regions and thus reduces reflection error on the local boundary. A continuous Green´s function (CGF) is implemented to pass the influence of external fields into each FDTD region which mitigates the numerical dispersion and anisotropy of standard FDTD. Numerical results will demonstrate the accuracy of this approach.

Keywords

Green´s function methods; finite difference time-domain analysis; CGF; DGF; FDTD lattice; continuous Green´s function; discrete Green´s function; domain-optimal Green´s functions based two-dimensional sparsely-populated problems; domain-optimal Green´s functions-based MR-FDTD; domain-optimal Green´s functions-based multiregion finite-difference time-domain analysis; local subregions; reflection error; Boundary conditions; Finite difference methods; Green´s function methods; Kernel; Lattices; Magnetic domains; Time domain analysis; Equivalence principle; Green´s function; multi-region FDTD; radiation boundary condition;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2238597

Filename

6407794