Communications: radio wave antennas – Antennas – Wave guide type
Patent
1996-08-08
1999-09-28
Le, Hoanganh
Communications: radio wave antennas
Antennas
Wave guide type
343781P, 343781R, H01Q 1919
Patent
active
059595906
ABSTRACT:
An improved subreflector antenna with lower sidelobes than prior art subreflector antennas is disclosed herein. A tapered, anisotropic, corrugated subreflector is attached to a waveguide and located at the focus of a near-parabolic deep dish main reflector. The subreflector has corrugations of varying depth. The varying depths of the corrugations result in varying reactance, or reactance taper, of the subreflector. This taper is designed in such a manner to guide or steer the energy from the antenna feed to the main reflector in such a manner as to help assure sharply reduced sidelobes. Further, the subreflector is physically shaped so as to further steer or guide the energy in the desired direction. The deep geometry of the main reflector allows the reduced sized subreflector to be positioned within the rim of the main reflector such that the combination can be covered by a flat radome.
REFERENCES:
patent: 2698901 (1955-01-01), Wilkes
patent: 2829366 (1958-04-01), Armstrong
patent: 3055004 (1962-09-01), Cutler
patent: 3983560 (1976-09-01), MacDougall
patent: 4188632 (1980-02-01), Knox
patent: 4503435 (1985-03-01), Dragone
patent: 4626863 (1986-12-01), Knop et al.
patent: 4673945 (1987-06-01), Syrigos
patent: 4673947 (1987-06-01), Newham
patent: 4827277 (1989-05-01), Becker et al.
patent: 4963878 (1990-10-01), Kildal
patent: 4982198 (1991-01-01), Shafai et al.
patent: 5302962 (1994-04-01), Rebuffi et al.
patent: 5606334 (1997-02-01), Amarllsas et al.
Panicali et al, "A reflector Antenna Corrected for Spherical, Coma and Chromatic", Proc. of IEEE, vol. 59, No. 2 Feb. 1971, pp. 311-312.
Blasing Raymond R.
Kishk Ahmed A.
Sanford John R.
Endgate Corporation
Le Hoang-anh
LandOfFree
Low sidelobe reflector antenna system employing a corrugated sub does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low sidelobe reflector antenna system employing a corrugated sub, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low sidelobe reflector antenna system employing a corrugated sub will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-708450