Application of the Leapfrog ADI FDTD Method to Periodic Structures

Author

Yun-Fei Mao ; Bin Chen ; Jing-Long Xia ; Jian Chen ; Ji-Zhen Tang

Author_Institution

Nat. Key Lab. on Electromagn. Environ. & Electro-Opt. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

12

fYear

2013

fDate

2013

Firstpage

599

Lastpage

602

Abstract

In this letter, the one-step leapfrog alternating direction implicit (ADI) finite-difference time-domain (FDTD) method has been introduced to solve periodic structures, resulting in a one-step leapfrog periodic ADI-FDTD method. In comparison to the original ADI-FDTD method, the one-step leapfrog ADI-FDTD method retains almost the same numerical modeling accuracy, but with higher computational efficiency. To simplify the issue, a reformation of the periodic one-step leapfrog ADI-FDTD method is also presented. Numerical results are given to demonstrate the proposed formulation. It is found that the periodic one-step leapfrog ADI-FDTD method requires less memory and CPU time than the conventional periodic ADI-FDTD method. To reduce the numerical dispersion error, an optimization procedure is applied.

Keywords

computational electromagnetics; finite difference time-domain analysis; periodic structures; ADI finite-difference time-domain method; alternating direction implicit; one-step leapfrog ADI FDTD method; periodic structure; Alternating direction implicit (ADI); finite-difference time-domain (FDTD) method; leapfrog; one-step;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2260520

Filename

6509908