Satellite tracking cassegrainian antenna

Details Satellite tracking cassegrainian antenna Satellite tracking cassegrainian antenna

1976-04-29

1977-08-23

Lieberman, Eli

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343761, 343781CA, 343837, H01Q 1918, H01Q 312

Patent

active

040443612

ABSTRACT:
An antenna apparatus comprising a primary radiator having an axially symmetric field pattern, and a main reflector and a subreflector coupled to the primary radiator through a beam wave-guide path. The antenna rotating axis is aligned with the axis of the primary radiator but a little deviated from the polar axis or the earth. At least one movable beam waveguide reflector or electromagnetic lens is provided in a radio wave path between the primary radiator and the subreflector. The antenna rotating axis is adapted to be rotatable only within a small angular range. The beam wave-guide reflector or electromagnetic lens is moved to thereby deflect the antenna beam.

REFERENCES:
patent: 3530477 (1970-09-01), Jarrett et al.
patent: 3821746 (1974-06-01), Mizusawa et al.

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