Title :
A model for corrugated waveguide terminations in mode converters
Author :
Da Silva, L.C. ; Branco, M.C.C.
Author_Institution :
Pontificia Univ. Catolica, Rio de Janeiro, Brazil
Abstract :
A model is presented for the determination of the scattering matrix of the discontinuity between smooth and corrugated waveguides. The model is based on the representation of the modal fields for the corrugated waveguide by an expansion into eigenfunctions of the transmission matrix of a unit cell composed by a period of the corrugated waveguide. It is observed that the method produces good agreement with experiment, with discrepancies less than 1.5 dB over the frequency band. The approximate model for the corrugated waveguide introduces a significant error at the lower frequencies: 6 dB at the lower edge of the band.<>
Keywords :
antenna feeders; circular waveguides; waveguide theory; corrugated horns; corrugated waveguide terminations; eigenfunctions; modal fields; mode converters; model; scattering matrix; transmission matrix; Apertures; Eigenvalues and eigenfunctions; Frequency; Magnetic fields; Matrix converters; Performance analysis; Scattering; Transmission line matrix methods; Waveguide discontinuities; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94332
