Title :
Scattering matrix of the discontinuity between superquadric waveguides
Author :
Novo, Marcela S. ; Silva, Luiz C da
Author_Institution :
Catholic Univ. of Rio de Janeiro, Brazil
Abstract :
The mode matching technique is applied to the determination of the scattering matrix of the discontinuity between superquadric waveguides. The modal fields and cut-off wavenumbers of the waveguides are calculated by the variational method. Introduction of trigonometric functions as basis functions and imposition of a criteria to eliminate spurious modes, allow the accurate computation of more than 200 modes of a given waveguide, which is necessary to the envisaged application. Due to the versatility of the superquadric waveguides, that assume the form of cylindrical, elliptical, and rectangular waveguides, and intermediate shapes between them, it results in an efficient algorithm that can be applied in the analysis and design of several waveguide devices.
Keywords :
S-matrix theory; circular waveguides; mode matching; rectangular waveguides; variational techniques; waveguide discontinuities; waveguide theory; arbitrary cross section waveguides; basis functions; cutoff wavenumbers; cylindrical waveguides; elliptical waveguides; intermediate shapes; modal fields; mode matching technique; rectangular waveguides; scattering matrix; spurious modes elimination; superquadric waveguides discontinuity; trigonometric functions; variational method; waveguide devices; waveguide discontinuities; waveguide modes; Algorithm design and analysis; Numerical models; Polynomials; Rectangular waveguides; Scattering; Shape; Tellurium; Transmission line matrix methods; Waveguide discontinuities; Waveguide transitions;
Conference_Titel :
Microwave and Optoelectronics Conference, 2003. IMOC 2003. Proceedings of the 2003 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7824-5
DOI :
10.1109/IMOC.2003.1244908
