Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1976-11-29
1979-03-27
Smith, Alfred E.
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343767, 343909, H01Q 1906, H01Q 1310, H01Q 1502
Patent
active
041468953
ABSTRACT:
A parallel plate geodesic lens aerial in the shape of a spherical cap or a flat disc, generates scanned planar radio beams. Commutated input signals to the lens are fed via output probes located around an arc of the perimeter of the lens to an arcuate array of radiating elements. The positional relationship between the power output from the lens and the power input to the array is 1:k, where k .noteq. 1. Dielectric-filled geodesic lenses, power level and scanned beam accuracy monitoring, and complex modulation of the input power to enable simpler aerials to be realized, are described.
REFERENCES:
patent: 3343171 (1967-09-01), Goodman, Jr.
patent: 3392394 (1968-07-01), Caballero, Jr.
patent: 3508275 (1970-04-01), Deveau et al.
patent: 3916415 (1975-10-01), Howery
patent: 3921176 (1975-11-01), Shanafelt
patent: 3964069 (1976-06-01), McDonough
Richard C. Johnson, The Geodesic Luneberg Lens, in The Microwave Journal, Aug. 1962.
Barlow Harry E.
Commonwealth Scientific and Industrial Research Organization
Smith Alfred E.
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