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(11) | EP 0 196 734 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Cassegrain antenna for TVRO application |
(57) An antenna is of the Cassegrain type with a main reflector, subreflector and horn,
all circularly symmetric. The horn is corrugated and profiled with the near field
focal point of the feed deep within the horn. The main reflector and subreflector
are shaped in accordance with the horn pattern to optimize the energy distribution
over the aperture of the main reflector. The subreflector, horn, and superstructure
of the main reflector may all be of plastic molded construction. |