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GREGORIAN ANTENNA WITH RING FOCUS

  • US 3,710,341 A
  • Filed: 03/17/1971
  • Issued: 01/09/1973
  • Est. Priority Date: 03/17/1971
  • Status: Expired due to Term
First Claim
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1. A Gregorian antenna system, comprising a main reflector, a subreflector, a first feed for illuminating said main reflector via said subreflector, and a second feed for directly illuminating said main reflector, said second feed being shaped, and positioned relative to said subreflector, to produce a ring focus for energy reflected from said subreflector toward said main reflector, said main reflector being shaped to have said ring focus as its prime focus.

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