Title :
Exact scattering matrix for the design of a multimode circular feed
Author :
Bresciani, D. ; Figlia, G. ; Daniele, V.G. ; Finotto, D.
Author_Institution :
CSELT, Turin, Italy
Abstract :
An application of Wiener-Hopf (W-H) techniques for the exact study of the truncation in an overmoded circular waveguide is presented. This method obtains closed exact forms of the general scattering matrix for all the propagating and evanescent modes considered. Results on coupling and reflection coefficients for any mode are obtained. The radiative part of the scattering matrix was derived to carry on the design and the analysis of a multimode circular feed taking into account critical aspects such as: radiation in near field, scattering at large angles, and design of matching networks.<>
Keywords :
antenna feeders; circular waveguides; electromagnetic wave scattering; Wiener-Hopf; closed exact forms; coupling; evanescent modes; general scattering matrix; matching networks; multimode circular feed; near field; overmoded circular waveguide; radiative part; reflection; truncation; Apertures; Electromagnetic analysis; Electromagnetic fields; Electromagnetic scattering; Electromagnetic waveguides; Feeds; Network synthesis; Reflection; Transmission line matrix methods; Waveguide discontinuities;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1988. AP-S. Digest
Conference_Location :
Syracuse, NY, USA
DOI :
10.1109/APS.1988.94069
