EFFICIENT EXCITATION OF WAVEGUIDES IN CRANK-NICOLSON FDTD

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 2010 United Kingdom, United Kingdom, Spain English Publisher:The Electromagnetics AcademyJournal:Progress In Electromagnetics Research Letters, volume 17, pages 27-38 (eissn: 1937-6480,

Copyright policy )Funded by:EC | HIRF SE

Authors: Garcia, S. G.; Costen, F.; id_orcid 0000-0003-1582-1664; Fernandez Pantoja, M.; Angulo, L. D.; Alvarez, J.;

doi: 10.2528/pierl10072008

handle: 10481/35446

EFFICIENT EXCITATION OF WAVEGUIDES IN CRANK-NICOLSON FDTD

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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.

The work described in this paper and the research leading to these results has received funding from the European Community's Seventh Framework Programme FP7/2007-2013, under grant agreement no 205294 (HIRF SE project), and from the Spanish National Projects TEC2010-20841-C04-04, TEC2007-66698-C04-02, CSD2008- 00068, DEX-530000-2008-105, and the Junta de Andalucia Projects TIC1541 and P09-TIC-5327.

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United Kingdom, United Kingdom, Spain

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Keywords

Eigenfunctions, Metallic waveguides, Crank-Nicolson, aveguide excitation, Eigenvalues, Finite Difference Time Domain (FDTD) methods

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