Title :
Modellization of losses in TE011-mode waveguide bandpass filters
Author :
Melloni, Andrea ; Gentili, Guido G.
Author_Institution :
Dipartimento di Elettronica e Inf., Politecnico di Milano, Italy
fDate :
11/1/1995 12:00:00 AM
Abstract :
A mode-matching technique for the analysis of TE011 mode waveguide cylindrical bandpass filters including losses is presented. The modes of a lossy radial waveguide are derived and the generalized scattering matrix of the lossy cavity coupled by two rectangular apertures is computed enforcing an impedance boundary condition on the cavity sidewall. Cavity sidewall losses as well as top and bottom wall losses are therefore taken accurately into account. Numerical and experimental results are given for a four cavity filter in Ka band
Keywords :
S-matrix theory; band-pass filters; cavity resonators; losses; mode matching; passive filters; resonator filters; waveguide filters; waveguide theory; Ka band; TE011 mode; cavity sidewall losses; cylindrical bandpass filters; four cavity filter; generalized scattering matrix; impedance boundary condition; loss modelling; losses; lossy cavity; lossy radial waveguide; mode-matching technique; rectangular aperture coupling; waveguide bandpass filters; Apertures; Band pass filters; Iris; Microwave theory and techniques; Notice of Violation; Rectangular waveguides; Resonator filters; Tellurium; Waveguide discontinuities; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
