General ADI-FDTD Formulations for Multi-Term Dispersive Electromagnetic Applications

Author

Ramadan, Omar

Author_Institution

Comput. Eng. Dept., Eastern Mediterranean Univ., Mersin, Turkey

Volume

21

Issue

10

fYear

2011

Firstpage

513

Lastpage

515

Abstract

General formulations of the alternating direction implicit finite difference time domain method are presented for modeling multi-term dispersive electromagnetic applications. The proposed formulations, which are based on the exponential evolution operator scheme, allow modeling different types of frequency dependent materials in the same manner and can be easily incorporated with the nearly perfectly matched layer absorbing boundary conditions to model open region problems. 2-D numerical example is included to show the validity of the proposed formulations.

Keywords

electromagnetic fields; finite difference time-domain analysis; 2D numerical example; ADI-FDTD formulation; alternating direction implicit finite difference time domain formulation; exponential evolution operator scheme; frequency dependent material; matched layer absorbing boundary condition; multiterm dispersive electromagnetic application; open region problem; Dispersion; Finite difference methods; Mathematical model; Media; Time domain analysis; Alternating direction implicit (ADI); dispersive materials; exponential evolution operator (EEO); finite difference time domain (FDTD); nearly perfectly matched layer (NPML);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2164240

Filename

5993467