Title :
Cut-Off Wavenumbers of Polygonal Cross Section Waveguides
Author :
Lucido, Mario ; Panariello, Gaetano ; Pinchera, Daniele ; Schettino, Fulvio
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Cassino & Southern Lazio, Cassino, Italy
Abstract :
The choice of basis functions is a key-point in Galerkin´s method. Taking into account the edge behaviour of the fields can greatly improve the effectiveness of the method, especially when dealing with conducting structures. Another issue is related to the impedance matrix computation, which can be cumbersome when resorting to the spectral domain. The aim of this letter is the analysis of arbitrary polygonal cross section waveguides with a technique addressing both the aforementioned issues. The reported numerical results show that high accuracy can be obtained quickly and with few basis functions.
Keywords :
Galerkin method; electromagnetic wave propagation; waveguide theory; Galerkin method; basis functions; conducting structure; cut off wavenumbers; edge behaviour; impedance matrix computation; polygonal cross section waveguides; Antennas; Integral equations; Rectangular waveguides; Scattering; Surface waves; Transmission line matrix methods; Cut-off wavenumbers; Galerkin´s method; polygonal cross section waveguides;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2340735