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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
William J. Welch0
Date of Patent
December 30, 2008
Patent Application Number
11472800
Date Filed
June 22, 2006
Patent Primary Examiner
Patent abstract
The present invention relates generally to the field of reflector-type antennas based on the offset Gregorian design having a substantially paraboloidal-shaped primary reflector and a substantially ellipsoidal secondary reflector displaced from the optical axis of the primary reflector. The first focus of the secondary reflector is substantially coincident with the focus of the primary reflector and a feed or detector is placed substantially at the second focus of the secondary reflector. A partially open shroud placed between the primary reflector and the secondary reflector is shown to result in reduced ground interference and improved antenna efficiency and sensitivity.
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