Analysis of Modal Dispersion Properties and Discontinuity Scattering of Ridged Waveguide
碩士 === 國立交通大學 === 電信研究所 === 81 === In this thesis, we calculate the modal dispersion characteristics of ridged waveguide with and without inhomogeneous dielectric-slab by employing a two-dimensional finite-difference time-domain method in c...
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| Format: | Others |
| Language: | en_US |
| Published: |
1993
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| Online Access: | http://ndltd.ncl.edu.tw/handle/41757394583497667851 |
| Summary: | 碩士 === 國立交通大學 === 電信研究所 === 81 === In this thesis, we calculate the modal dispersion
characteristics of ridged waveguide with and without
inhomogeneous dielectric-slab by employing a two-dimensional
finite-difference time-domain method in conjuction with
discrete Fourier transform technique.By introducing a plane
shift along the propagation direction, a three-dimensional Yee'
s mesh can be reduced to two-dimensional mesh. Now it is
possible to calculate the propagation constant of hybrid modes
by using only a two-dimensional FDTD mesh.This step not only
allows the frequency selective application of the finite-
difference time-domain method woth suitable absorbing boundary
conditions to solve the electromagnetic field scattering
problem in a ridged waveguide with discontiuity. Results
obtained for the problem of a thin dielectric slab is used to
verify the validity of the FDTD.
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