Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1980-10-29
1983-03-15
Lieberman, Eli
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343100LE, 343853, H01Q 326
Patent
active
043769403
ABSTRACT:
The present invention relates to wideband antenna arrangements for suppressing selected sidelobes comprising a main antenna (10) comprising a predetermined aperture (l) and two sidelobe suppression means (12, 14, 40, 42) disposed adjacent and on symmetrically opposite sides of the main antenna in the plane of the sidelobes to be suppressed. The distance between the suppression means preferably approximates the width of the aperture of the main antenna and the aperture size of the suppression means controls the sidelobe suppression region at the aperture of the main antenna. The suppression means can comprise two auxiliary antennas or two sections of the main antenna focusing reflector having apertures (l.sub.1) which are smaller than that of the main antenna.
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Parekh, Reshaped Subreflectors Reduce Antenna Sidelobes; Microwaves, vol. 16, No. 5, pp. 170-173.
Bell Telephone Laboratories Incorporated
Lieberman Eli
Pfeifle Erwin W.
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