Title :
Improvements of the two-dimensional FDTD method for the simulation of normal- and superconducting planar waveguides using time series analysis
Author :
Hofschen, Stefan ; Wolff, Ingo
Author_Institution :
Dept. of Electr. Eng., Gerhard Mercator Univ., Duisburg, Germany
fDate :
8/1/1996 12:00:00 AM
Abstract :
Time-domain simulation results of two-dimensional (2-D) planar waveguide finite-difference time-domain (FDTD) analysis are normally analyzed using Fourier transform. The introduced method of time series analysis to extract propagation and attenuation constants reduces the desired computation time drastically. Additionally, a nonequidistant discretization together with an adequate excitation technique is used to reduce the number of spatial grid points. Therefore, it is possible to simulate normal- and superconducting planar waveguide structures with very thin conductors and small dimensions, as they are used in MMIC technology. The simulation results are compared with measurements and show good agreement
Keywords :
finite difference time-domain analysis; planar waveguides; superconducting microwave devices; time series; waveguide theory; 2D FDTD method; MMIC technology; attenuation constants; excitation technique; finite-difference time-domain analysis; nonequidistant discretization; normal planar waveguides; propagation constants; spatial grid points reduction; superconducting planar waveguides; time series analysis; Analytical models; Attenuation; Computational modeling; Finite difference methods; Fourier transforms; Planar waveguides; Superconducting transmission lines; Time domain analysis; Time series analysis; Two dimensional displays;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
