A novel wide band absorbing boundary condition for FDTD method simulations

Author

Ao Sheng Rong ; Zhong Liang Sun ; Tripathi, V.K. ; Hua Xin Wang ; Wen Bin Dou

Author_Institution

Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA

fYear

1995

fDate

16-20 May 1995

Firstpage

645

Abstract

A wide band absorbing boundary condition that utilizes the basic relations between transverse fields of a guided travelling wave in the frequency domain is presented for FDTD method simulations. The resultant ABC operator ensures that the outgoing waves on the boundaries can be absorbed over the total frequency band of interest. The exponential approximation is used to recursively implement our ABC in the FDTD simulation, avoiding the need for the complete time history of field components. The numerical experiments are used to demonstrate that the present ABC consistently has a superior absorbing performance over a wide frequency band.<>

Keywords

circuit analysis computing; electromagnetic wave absorption; finite difference time-domain analysis; microwave integrated circuits; rectangular waveguides; ABC operator; FDTD method simulations; absorbing performance; exponential approximation; guided travelling wave; microwave integrated circuits; open region problems; outgoing waves; transverse fields; wide band absorbing boundary condition; Boundary conditions; Computational modeling; Computer simulation; Electromagnetic propagation; Finite difference methods; Frequency domain analysis; History; Reflection; Time domain analysis; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1995., IEEE MTT-S International

Conference_Location

Orlando, FL, USA

ISSN

0149-645X

Print_ISBN

0-7803-2581-8

Type

conf

DOI

10.1109/MWSYM.1995.405924

Filename

405924