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Improvements of the two-dimensional FDTD method for the simulation of normal- and superconducting planar waveguides using time series analysis

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2 Author(s)
Hofschen, Stefan ; Dept. of Electr. Eng., Gerhard Mercator Univ., Duisburg, Germany ; Wolff, I.

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

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:44 ,  Issue: 8 )