Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.604524
