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Progress In Electromagnetics Research Letters
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EFFICIENT EXCITATION OF WAVEGUIDES IN CRANK-NICOLSON FDTD

By S. G. Garcia, F. Costen, M. Fernandez Pantoja, L. D. Angulo, and J. Alvarez

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Abstract:
In this paper, we present a procedure to calculate the discrete modes propagated with Crank-Nicolson FDTD in metallic waveguides. This procedure enables the correct excitation of this kind of waveguides at any resolution. The problem is reduced to solving an eigenvalue equation, which is performed, both in a closed form, for the usual rectangular waveguide, and numerically in the most general case, validated here with a ridged rectangular waveguide.

Citation:
S. G. Garcia, F. Costen, M. Fernandez Pantoja, L. D. Angulo, and J. Alvarez, "Efficient Excitation of Waveguides in Crank-Nicolson FDTD," Progress In Electromagnetics Research Letters, Vol. 17, 27-38, 2010.
doi:10.2528/PIERL10072008

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