Communications: radio wave antennas – Antennas – Wave guide type
Patent
1998-05-08
2000-07-25
Le, Hoanganh
Communications: radio wave antennas
Antennas
Wave guide type
343781GA, 343781P, H01Q 1914
Patent
active
06094174&
ABSTRACT:
An omnidirectional microwave antenna comprises a paraboloidal reflector disposed above the ground and facing downwardly with a substantially horizontal aperture and a substantially vertical axis. A vertically oriented feed horn is located below the paraboloidal reflector on the axis of the paraboloidal reflector and has a phase center located near the focal point of the paraboloidal reflector. A conical reflector having a shaped reflecting surface defined by the parameters of a mathematical equation extends downwardly away from the periphery of the feed horn for reflecting radiation received vertically from the paraboloidal reflector in a horizontal direction away from the conical reflector, and for reflecting horizontally received radiation vertically to the paraboloidal reflector. A radome extends downwardly from the outer periphery of the paraboloidal reflector and includes an absorber material for absorbing radiation propagated laterally from the feed horn and the conical reflector above the aperture of the feed horn.
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Gunnels Robert C.
Knop Charles M.
Orseno Gregory S.
Ostertag Edward L.
Andrew Corporation
Le Hoang-anh
Rudisill Stephen G.
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