Steerable feed for toroidal antennas

Details Steerable feed for toroidal antennas Steerable feed for toroidal antennas

1974-11-29

1976-10-26

Lieberman, Eli

Communications: radio wave antennas

Antennas

With means for moving directive antenna for scanning,...

343779, H01Q 312

Patent

active

039887367

ABSTRACT:
A plurality of steerable beam feed devices are used in combination with a single stationary toroidal antenna which permits simultaneous communication with several geosynchronous satellites. Each feed device is movably mounted on a flat elevation plate having linear bearings which mate with rails on a flat azimuth plate to allow the feed to be positioned vertically or at some angle with respect to the vertical depending upon the orientation of the antenna. The flat azimuth plate is mounted for movement on two curved rails which follow the focal arc of the toroidal antenna. Linear actuator devices are provided for moving each plate within a limited range to provide fine positioning of the feed relative to the antenna.

REFERENCES:
patent: 2976533 (1961-03-01), Salisbury
patent: 3273156 (1966-09-01), Doundoulakis
patent: 3386100 (1968-05-01), Jaszberenyi
patent: 3832715 (1974-08-01), Afifi et al.
patent: 3852763 (1974-12-01), Kreutel et al.

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