@misc{10481/35446, year = {2010}, url = {http://hdl.handle.net/10481/35446}, 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.}, organization = {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.}, publisher = {EMW Publishing}, keywords = {Crank-Nicolson}, keywords = {Metallic waveguides}, keywords = {Finite Difference Time Domain (FDTD) methods}, keywords = {aveguide excitation}, keywords = {Eigenvalues}, keywords = {Eigenfunctions}, title = {Efficient excitation of waveguides in Crank-Nicolson FDTD}, doi = {10.2528/PIERL10072008}, author = {González García, Salvador and Costen, Fumie and Fernández Pantoja, Mario Alberto and Díaz Angulo, Luis Manuel and Álvarez González, Jesús}, }