Communications: radio wave antennas – Antennas – Wave guide type
Patent
1982-03-09
1985-05-07
Lieberman, Eli
Communications: radio wave antennas
Antennas
Wave guide type
343909, H01Q 1919
Patent
active
045161305
ABSTRACT:
The present invention relates to an antenna arrangement comprising a feed producing a predetermined feed aperture illumination and a plurality of sequentially arranged reflectors including a main reflector forming the aperture of the antenna arrangement. The present antenna arrangement also includes filtering means centered on a real focal point between two reflectors of the antenna arrangement. The filtering means is arranged to pass therethrough the central ray of a beam launched by the feed and for smoothing out discontinuities of the image of the feed aperture illumination in the area of the main reflector normally found without filtering. The main reflector is then made slightly oversize to intercept the smoothened-out image of the feed aperture illumination along a line which produces a predetermined level of edge intensity.
REFERENCES:
patent: 3094695 (1963-06-01), Jahn
patent: 3176301 (1965-03-01), Wellons et al.
patent: 3202990 (1965-08-01), Howells
patent: 3325816 (1967-06-01), Dutton
patent: 3633208 (1972-01-01), Ajioka
patent: 3704464 (1972-11-01), Drane, Jr. et al.
patent: 3811129 (1974-05-01), Holst
patent: 3815140 (1974-06-01), Buehler et al.
patent: 3983560 (1976-09-01), MacDougall
patent: 4021812 (1977-05-01), Schell et al.
patent: 4166276 (1979-08-01), Dragone
patent: 4169268 (1979-09-01), Schell et al.
patent: 4187508 (1980-02-01), Evans
patent: 4223316 (1980-09-01), Drabowitch
patent: 4259674 (1981-03-01), Dragone et al.
patent: 4364052 (1982-12-01), Ohm
patent: 4376940 (1983-03-01), Miedema
Parekh, S. V. et al., "Reshaped Subreflectors Reduce Antenna Sidelobes", Microwaves, vol. 16, No. 5, 5-77, pp. 170-173.
Mittra, R. et al., "Shaped Dual Reflector Synthesis", IEEE Newsletter, Antennas and Propagation Society, vol. 22, No. 4, 8-80, pp. 5-9.
AT&T Bell Laboratories
Lieberman Eli
Pfeifle Erwin W.
Wimer Michael C.
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