The finite-difference time-domain (FD-TD) method for numerical modeling of electromagnetic scattering

Author

Taflove, Allen ; Umashankar, Korada R.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Northwestern Univ., Evanston, IL, USA

Volume

25

Issue

4

fYear

1989

fDate

7/1/1989 12:00:00 AM

Firstpage

3086

Lastpage

3091

Abstract

Recent applications of the finite-difference-time-domain (FD-TD) numerical modeling approach for Maxwell´s equations are reviewed. The objects modeled to date range from simple 2D geometric shapes to extremely complex 3D aerospace and biological systems. General characteristics of FD-TD are presented. Four applications dealing with electromagnetic scattering by canonical two and three-dimensional targets are examined: four circular dielectric/permeable cylinder, conformally modeled; metal cube, broadside incidence; 3D T-shaped conducting target with a monostatic radar-cross-section (RCS) pattern; and trihedral metal corner reflector with a monostatic RCS pattern. It is shown that FD-TD predictive data for near fields and RCSs are in excellent agreement with the benchmark data

Keywords

difference equations; electromagnetic wave scattering; time-domain analysis; 2D geometric shapes; 3D systems; Maxwell equations; T-shaped conducting target; aerospace systems; biological systems; broadside incidence; canonical targets; circular dielectric/permeable cylinder; electromagnetic scattering; finite-difference time-domain method; metal cube; monostatic radar-cross-section; numerical modeling; trihedral metal corner reflector; Biological system modeling; Biological systems; Dielectrics; Electromagnetic scattering; Finite difference methods; Maxwell equations; Numerical models; Shape; Solid modeling; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.34377

Filename

34377