Communications: radio wave antennas – Antennas – Wave guide type
Patent
1982-06-28
1984-11-13
Lieberman, Eli
Communications: radio wave antennas
Antennas
Wave guide type
343781P, H01Q 1919
Patent
active
044828977
ABSTRACT:
The present invention relates to antennas with a segmented reflecting surface for providing fully or partially overlapping beams from separate feeds associated with each segment without incurring cross-coupling between feeds and power loss. More particularly, a main reflector or a subreflector reflecting surface is segmented to provide separate images of the far field area of the antenna on separate focal surfaces in the vicinity of an original focal surface of a corresponding non-segmented antenna. Feeds disposed at essentially corresponding locations on each of the far field area images produced by each of the segments provide separate beam footprints which overlap each other in the far field area by a predetermined amount.
REFERENCES:
patent: 2598475 (1952-05-01), White, Jr.
patent: 2702859 (1955-02-01), Robinson
patent: 3108279 (1963-10-01), Eisentraut
patent: 3370295 (1968-02-01), Kelsey
patent: 3881178 (1975-04-01), Hannan
patent: 3914768 (1975-10-01), Ohm
patent: 4149227 (1979-04-01), Dorman
patent: 4190355 (1980-02-01), Avery et al.
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patent: 4259674 (1982-03-01), Dragone et al.
patent: 4315262 (1982-02-01), Acampora et al.
R. C. Hansen, "Microwave Scanning Antennas," Academic Press, 1964, pp. 129-132.
Dragone Corrado
Gans Michael J.
AT&T Bell Laboratories
Lieberman Eli
Pfeifle Erwin W.
Wimer Michael C.
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