Title :
Vector Finite Difference approach to the computation of TM waveguide modes
Author :
Fanti, Alessandro ; Mazzarella, Giuseppe
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Cagliari, Cagliari, Italy
Abstract :
We describe here a Vector Finite Difference approach to the evaluation of waveguide eigenvalues and modes. The VFD is applied using a 2D cartesian grid, in the waveguide section. A suitable Taylor expansion of the vector mode function, allows to take exactly into account the boundary condition for a large class of waveguide. The 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 TM modes of a rectangular waveguide.
Keywords :
approximation theory; eigenvalues and eigenfunctions; finite difference methods; rectangular waveguides; 2D cartesian grid; FD approximation; TM waveguide mode; Taylor expansion; constrained eigenvalue problem; decomposition method; rectangular waveguide; vector finite difference approach; vector mode function; waveguide eigenvalue; Antennas; Conferences;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2011 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4577-1014-8
Electronic_ISBN :
978-1-4577-1015-5
DOI :
10.1109/LAPC.2011.6114143
