Efficient Implementation of the Divergence-Preserved ADI-FDTD Method

Author

Shunchuan Yang ; Chen, Zhizhang David ; Yu, Ya Jun ; Ponomarenkno, S.

Author_Institution

Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1560

Lastpage

1563

Abstract

Unlike its conventional version, an unconditionally stable alternating-direction-implicit (ADI) finite-difference time-domain (FDTD) method was recently proposed that retains the correct divergence property but with higher computation expenditure. In this letter, a newly formulated divergence-preserved ADI-FDTD method is proposed. It takes about 41.7% less count of floating-point operations than the original divergence-preserved ADI-FDTD method without scarifying accuracy. Detailed analysis and numerical examples are presented to verify the improvement of computational efficiency.

Keywords

electromagnetic wave propagation; finite difference time-domain analysis; floating point arithmetic; ADI; FDTD method; alternating direction implicit; computational efficiency; divergence preservation; finite difference time domain method; floating point operation; Accuracy; Computational efficiency; Finite difference methods; Floating-point arithmetic; Memory management; Time domain analysis; Alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method; computational efficiency; divergence -free; divergence preservation; floating-point operation; unconditionally stability;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2236636

Filename

6395802