Title :
Improvement in calculation of some surface integrals: application to junction characterization in cavity filter design
Author :
Guillot, P. ; Couffignal, P. ; Baudrand, H. ; Theron, B.
Author_Institution :
Lab. d´Electron., ENSEEIHT, Toulouse, France
Abstract :
A rigorous method which makes it possible to reduce a surface integral to a contour integral is developed. The application of this formulation to the study of a circular-to-rectangular waveguide junction reduces the time of computation of the scattering parameters by more than 50%. The method is used to calculate the electromagnetic coupling of circular cavities by a rectangular iris. This approach, together with an optimization procedure, has allowed the direct design of a filter without any further mechanical adjustments. The results obtained are in good agreement with experimental data.<>
Keywords :
S-parameters; cavity resonators; circular waveguides; microwave filters; rectangular waveguides; cavity filter design; circular-to-rectangular waveguide junction; contour integral; electromagnetic coupling; junction characterization; rectangular iris; scattering parameters; surface integrals; Apertures; Electromagnetic coupling; Electromagnetic waveguides; Iris; Microwave filters; Rectangular waveguides; Tellurium; Transmission line matrix methods; Waveguide discontinuities; Waveguide junctions;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276781
