Title :
A hemispherical lens antenna for multi-satellite reception
Author :
Harrison, D.M. ; Fujimoto, M. ; Tabor, G.
Author_Institution :
Thomson Consumer Electron., Illkirch, France
Abstract :
A hemispherical lens antenna has been developed for the reception of direct to home satellite broadcasts in Europe. The antenna uses a homogeneous lens and flat reflector to give an angle of scan of +or-60 degrees without degradation in performance. Artificial dielectric material consisting of spherical voids in polystyrene is used to realize the necessary lens dielectric constant. Unlike previous implementations of the hemispherical lens approach, the reflector is extended beyond the surface of the lens to maintain the effective aperture area of the antenna with scan angle.<>
Keywords :
direct broadcasting by satellite; lens antennas; satellite antennas; satellite relay systems; Europe; artificial dielectric material; flat reflector; hemispherical lens antenna; homogeneous lens; multi-satellite reception; polystyrene; spherical voids; Apertures; Dielectric constant; Dielectric materials; Equations; Feeds; Lenses; Optical materials; Plastics; Satellite broadcasting; Sheet materials;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221751
