Antenna system for shaped beam

Communications: radio wave antennas – Antennas – Wave guide type

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343776, 343912, 343835, H01Q 15160, H01Q 19170

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active

052587673

ABSTRACT:
A shaped beam antenna system which provides a desired shape of beam, comprises a reflector and at least one primary radiator located essentially at focus of said reflector. Reflection surface of the reflector is a dense set of parabolas in which vertexes of said parabola shift on a predetermined locus which is preferably a three dimensional space curve, but not a plane curve. A second feature of the shaped beam antenna system is the primary radiator which is composed of a plurality of primary radiators positioned closely to each other.

REFERENCES:
patent: 3995275 (1976-11-01), Betsudan et al.
patent: 4605935 (1986-08-01), Kusano
patent: 4811029 (1989-03-01), Nomoto et al.
Rusch, W. T., The Current State of the Reflector Antenna Art, IEEE Trans. on Ant. & Prop., AP 32, No. 4, Apr. 1984 pp. 313-326.
"Calculation of Doubly Curved Reflectors for Shaped Beams", Dunbar, Proceedings of the I.R.E.--Waves and Electrons Section, Oct., 1948, pp. 1289-1296.
"Advanced Satcom Communication Antennas", Parekh et al, 1985 IEEE, pp. 1293-1298.
"Intelsat VI Antenna System Overview", Lane et al., AIAA 10th Communication Satellite Systems Conference, Mar., 1984, pp. 1-12.

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