An FDTD method with FFT-accelerated exact absorbing boundary conditions

Author

Sirenko, Kostyantyn ; Bagci, Hakan

Author_Institution

Div. of Phys. Sci. & Eng., King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia

fYear

2011

fDate

3-8 July 2011

Firstpage

2315

Lastpage

2318

Abstract

An accurate and efficient finite-difference time-domain (FDTD) method for analyzing axially symmetric structures is presented. The method achieves its accuracy and efficiency using exact absorbing conditions (EACs) for terminating the computation domain and a blocked-FFT based scheme for accelerating the computation of the temporal convolutions present in non-local EACs. The method is shown to be especially useful in characterization of long-duration resonant wave interactions.

Keywords

convolution; electromagnetic waves; fast Fourier transforms; finite difference time-domain analysis; FDTD method; FFT-accelerated; absorbing boundary conditions; axially symmetric structures; computation domain; exact absorbing conditions; finite-difference time-domain; long-duration resonant wave interactions; temporal convolutions; Acceleration; Boundary conditions; Computational modeling; Convolution; Finite difference methods; Time domain analysis; Transient analysis; FFT; exact boundary conditions; fast methods; finite difference methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996982

Filename

5996982