Title :
Dual-offset antennas with a spherical main reflector for small earth stations
Author :
Bergmann, J.R. ; Costa, J. C A W da
Author_Institution :
Center for Telecommun. Studies, Catholic Univ. of Rio de Janeira, Brazil
fDate :
3/1/1993 12:00:00 AM
Abstract :
The design of dual-reflector antennas with a spherical main reflector for small earth stations is considered. An analysis of the field polarization throughout the system shows that it is possible to adjust the reflectors to obtain very low cross-polarization. The use of an elliptical main reflector projection is explored in order to enhance efficiency and lower side-lobe levels
Keywords :
antenna radiation patterns; reflector antennas; satellite ground stations; dual offset antenna; dual-reflector antennas; elliptical main reflector projection; field polarization; side-lobe levels; small earth stations; spherical main reflector; very low cross-polarization; Antennas and propagation; Apertures; Costs; Feeds; Geometrical optics; Geometry; Large-scale systems; Polarization; Reflector antennas; Satellite ground stations;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
