Title :
Modeling of discontinuities in general coaxial waveguide structures by the FDTD-method
Author :
Hese, Jan Van ; Zutter, Daniël De
Author_Institution :
Lab. of Electromagn. & Acoust., Ghent Univ., Belgium
fDate :
3/1/1992 12:00:00 AM
Abstract :
The finite-difference time-domain (FDTD) method is used to model generalized coaxial waveguide structures with discontinuities. The cross section of the waveguide consists of a closed outer conductor and one or two inner conductors of arbitrary shape. The cross section can have any number of dielectric materials with losses. The singular field-behavior near sharp edges is explicitly included in the finite-difference scheme. Any kind of discontinuity can be handled: changes in cross-section as well as changes of material parameters. From the time-domain data, frequency-domain data (S-parameters) are obtained using Fourier-transform techniques
Keywords :
difference equations; time-domain analysis; waveguide theory; FDTD-method; Fourier-transform techniques; S-parameters; coaxial waveguide structures; discontinuities; finite-difference time-domain; frequency-domain data; sharp edges; singular field-behavior; Coaxial components; Conducting materials; Conductors; Dielectric losses; Dielectric materials; Finite difference methods; Scattering parameters; Shape; Time domain analysis; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
