Chinese Space Science and Technology

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SHAPED GREGORIAN FEEDS

Jia Cunxi (TAIHUA Scientific Instrument Factory)   

  • Online:1989-12-25

Abstract: The paper describes a shaped Gregorian feeds which includshorn,modified ellipsoid subrelector and dielectric body.The dielectric bodylinks horn and subreflector.The paper derives a set of equations whosesolution yields directly the both subreflector and dielectric body profilesto qive a specified amplitude and phase distribution in the main reflectoraperture.The shaped feeds has two particular advantages.First,it puts offthe support of subreflector.Next,it retains the shape of paraboloid mainreflector.