| Título: | Curvilinear vector finite difference approach to the computation of waveguide modes |
| Autores: |
Fanti, Alessandro; University of cagliari Mazzarella, Giuseppe; University of cagliari Montisci, Giorgio; University of cagliari |
| Fecha: | 2012-07-02 |
| Publicador: | Advanced Electromagnetics |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
| Tema: |
Engineering Vector finite difference; waveguide; polar and elliptical grid |
| Descripción: | We describe here a Vector Finite Difference approach to the evaluation of waveguide eigenvalues and modes for rectangular, circular and elliptical waveguides. The FD is applied using a 2D cartesian, polar and elliptical grid in the waveguide section. A suitable Taylor expansion of the vector mode function allows to take exactly into account the boundary condition. To prevent the raising of spurious modes, our FD approximation results in a constrained eigenvalue problem, that we solve using a decomposition method. This approach has been evaluated comparing our results to the analytical modes of rectangular and circula rwaveguide, and to known data for the elliptic case. |
| Idioma: | Inglés |
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