A Novel Absorbing Boundary Condition for the 3-D Split-Step FDTD Method

Author

Zhou, Jianyi ; Zhao, Jianing

Author_Institution

State Key Lab. of Millimeter Waves & the Nat. Mobile Commun. Lab., Southeast Univ., Nanjing, China

Volume

22

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

167

Lastpage

169

Abstract

In this letter, a novel absorbing boundary condition (ABC) is proposed for the 3-D split-step finite-difference time-domain (FDTD) method. Compared with the traditional Mur first-order ABC, the proposed ABC is simpler and requires less additional computation. Numerical simulation results show that the reflection error of the proposed ABC is much lower than that of the traditional Mur first-order ABC and its modifications. Further investigation shows that the accuracy of the proposed ABC is almost equivalent to the Mur second-order ABC.

Keywords

electromagnetic wave absorption; finite difference time-domain analysis; 3D split-step FDTD method; Mur first-order ABC; Mur second-order ABC; absorbing boundary condition; finite-difference time-domain method; numerical simulation; reflection error; Accuracy; Boundary conditions; Finite difference methods; Mathematical model; Stability analysis; Time domain analysis; Wireless communication; Finite-difference time-domain (FDTD) method; absorbing boundary condition (ABC); locally one-dimensional FDTD (LOD-FDTD); split-step FDTD (SS-FDTD);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2188021

Filename

6171884