Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1980-12-29
1984-03-06
Lieberman, Eli
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343756, 343781P, H01Q 1502, H01Q 1919
Patent
active
044357141
ABSTRACT:
A confocal parabolic antenna system includes a grid of parallel metallic strips placed in the focal plane of the antenna system. The strips are oriented in the direction of an uplink wave polarization and eliminate the grating lobes at the uplink frequency band by reflecting the energy of the particular spatial harmonic components which give rise to the grating lobes.
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Dragone & Gans "Imagine Reflector Arrangement to Form a Scanning Beam using a Small Array, The Bell System Technical Journal, vol. 58, No. 2, Feb. 1979.
Dragone & Gans-Sattellite Phased Arrays: Use of Imaging Reflectors with Spatial Filtering in the Focal Plane to Reduce Grating Lobes.
Abolins Peter
Ford Aerospace & Communications Corp.
Lieberman Eli
Sadler Clifford L.
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