Dual gridded reflector antenna

Details Dual gridded reflector antenna Dual gridded reflector antenna

1999-03-10

2000-04-18

Wong, Don

Communications: radio wave antennas

Antennas

Wave guide type

343756, 343781R, 343DIG2, H01Q 1914

Patent

active

060520957

ABSTRACT:
An improved dual gridded reflector antenna configuration which allows cross-polarization radiation to be scanned in any given direction. The dual-gridded reflector assembly includes a front parabolic reflector illuminated by a first source, and a second parabolic reflector illuminated by a second source. The second reflector is positioned adjacent to and behind the front reflector such that the center points of the reflectors align to define a center axis. Additionally, the first and second sources are positioned at different offsets with respect to the reflectors and have a respective rotated offset angle with respect to the center axis such that the sources define an antenna feed separation. By modifying the offsets and the rotated offset angles, the feed separation can be designed to have an inclination with respect to the north-south or east-west feed separation direction.

REFERENCES:
patent: 4625214 (1986-11-01), Parekh
patent: 4647938 (1987-03-01), Roederer
patent: 4823143 (1989-04-01), Bockrath
patent: 4978967 (1990-12-01), Masujima
patent: 5402137 (1995-03-01), Ramanujam et al.
patent: 5581265 (1996-12-01), Stirland et al.
patent: 5673056 (1997-09-01), Ramanujam et al.
patent: 5847681 (1998-12-01), Faherty et al.

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