An FDTD impedance boundary condition and its application to waveguide discontinuity analyses

Author

Shibata, T. ; Yongxi Qian ; Itoh, T.

Author_Institution

NTT Syst. Electron. Labs., Tokyo, Japan

Volume

1

fYear

1997

fDate

8-13 June 1997

Firstpage

75

Abstract

A new method for calculating the scattering parameters of metal waveguide structures based on the FDTD field simulation is presented. In this method, a type of the boundary condition called the Impedance Boundary Condition (IBC) is adopted at the circuit terminating ports. It allows us to excite the circuit with an arbitrary mode and terminate all ports by well-defined impedances. This implementation enables us to calculate the scattering parameters efficiently and rigorously.

Keywords

S-parameters; equivalent circuits; finite difference time-domain analysis; waveguide discontinuities; waveguide theory; FDTD field simulation; FDTD impedance boundary condition; circuit terminating ports; metal waveguide structures; scattering parameters; waveguide discontinuity analyses; Boundary conditions; Circuit analysis; Circuit simulation; Eigenvalues and eigenfunctions; Finite difference methods; Frequency; Impedance; Scattering parameters; Time domain analysis; Waveguide discontinuities;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1997., IEEE MTT-S International

Conference_Location

Denver, CO, USA

ISSN

0149-645X

Print_ISBN

0-7803-3814-6

Type

conf

DOI

10.1109/MWSYM.1997.604524

Filename

604524