Title :
Application of boundary element method to the analysis of cutoff wavenumbers of ridged rectangular waveguides and ridged circular waveguides
Author :
Fontgalland, Glauco ; Najid, Abdellah ; Guglielmi, M.
Author_Institution :
Fed. Center of Tech, Educ, od Maranhao, Sao Luis
Abstract :
The computation of the cutoff wavenumbers using the boundary element method (BEM) is presented in this paper. Through discretization, the scalar integral equation Green´s function is used to determine the spectrum mode in the ridged waveguide. These equations are transformed into a eigenvalue equation, with the eigenvalues as the resonant frequencies, using the Galerkin method. Electric field plots are presented for ridged rectangular waveguides and ridged circular waveguides. Results are given and compared with published data
Keywords :
Galerkin method; Green´s function methods; boundary-elements methods; circular waveguides; eigenvalues and eigenfunctions; electric fields; integral equations; ridge waveguides; waveguide theory; BEM; Galerkin method; boundary element method; cutoff wavenumbers; eigenvalue equation; electric field plots; resonant frequencies; ridged circular waveguides; ridged rectangular waveguides; scalar integral equation Green function; spectrum mode; Boundary element methods; Eigenvalues and eigenfunctions; Green´s function methods; Integral equations; Laplace equations; Magnetic fields; Rectangular waveguides; Resonance; Space technology; Surface waves;
Conference_Titel :
Microwave and Optoelectronics Conference, 1997. Linking to the Next Century. Proceedings., 1997 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
0-7803-4165-1
DOI :
10.1109/SBMOMO.1997.646845
