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Expired Canadian patentCanada

Method and apparatus for obtaining antenna tracking signals

CA 1213025 A · Owner: Ant Nachrichtentechnik G.M.B.H. · Inventors: Morz, Gunter

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Abstract From the Canadian patent

A method and apparatus for deriving control signals far enabling an antenna to track a signal source and this antenna is operated to produce at least one beam having a maximum of the boresight axis and one beam having a minimum on the boresight axis, by deriving a sum signal associated to the beam having a maximum on the boresight axis and a difference signal associated to the beam having a minimum on the boresight axis sequentially and cyclically, varying the relative phase relationship between the difference and the sum signal among four different phase values and combining the sum signal with, the difference signal for producing signals constituting a source of the control signals for …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 21, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 5, 1983
GrantedOctober 21, 1986
Term endedOctober 21, 2003
Patent numberCA 1213025 A
Classification (IPC)G01S3/42 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 5, 1983Patent grantedOct 21, 1986Term endedOct 21, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.