A finite-difference technique to compute Eigenvalues and mode distribution of non standard waveguide (and aperture) is presented. It is based on a mixed mesh (Cartesian-polar) to avoid staircase discretization of curved edges, and is able to give accuracy comparable to FEM and FIT techniques with a reduced computational burden.
A Finite Difference Polar-Cartesian Grid Approach for Mode Computation in Rounded-End Waveguides
FANTI, ALESSANDRO;MAZZARELLA, GIUSEPPE
2011-01-01
Abstract
A finite-difference technique to compute Eigenvalues and mode distribution of non standard waveguide (and aperture) is presented. It is based on a mixed mesh (Cartesian-polar) to avoid staircase discretization of curved edges, and is able to give accuracy comparable to FEM and FIT techniques with a reduced computational burden.
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