EFFICIENT EXCITATION OF WAVEGUIDES IN CRANK-NICOLSON FDTD | Zendy

Salvador G. García | Zendy; Fumie Costen | Zendy; Mario F. Pantoja | Zendy; Luis D. Angulo | Zendy; Jesus Alvarez | Zendy

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EFFICIENT EXCITATION OF WAVEGUIDES IN CRANK-NICOLSON FDTD

Author(s) -

Salvador G. García,

Fumie Costen,

Mario F. Pantoja,

Luis D. Angulo,

Jesus Alvarez

Publication year - 2010

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

ISSN - 1937-6480

DOI - 10.2528/pierl10072008

Subject(s) - finite difference time domain method , excitation , crank–nicolson method , physics , mathematics , optics , mathematical analysis , quantum mechanics , finite difference method

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.

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