Parabolic dual reflector antenna with offset feed

Details Parabolic dual reflector antenna with offset feed Parabolic dual reflector antenna with offset feed

1984-08-24

1994-06-07

Blum, Theodore M.

Communications: radio wave antennas

Antennas

With polarization filter or converter

H01Q 1900

Patent

active

053193792

ABSTRACT:
A dual polarized mechanical scan antenna capable of rapid beam scanning includes a parabolic reflector having an elliptically shaped solid metal central section with conductive parallel grids extending therefrom to the perimeter of the paraboloid to form two outer grided sections. The axis of the parabolic reflector and the radiation axis of the feed antenna, positioned at the focus in alignment therewith, is positioned at a predetermined angle from a reference axis of the system. A polarization twist reflector is positioned at the focus for pivoting about the perpendicular to the reference axis. Dual polarization is realized when the twist plate is positioned such that the antenna system receives signals along paths that clear the parabolic reflector.

REFERENCES:
patent: 3771160 (1973-11-01), Laverick

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