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Adaptive multifilar antenna

  • US 6,891,516 B1
  • Filed: 09/01/2000
  • Issued: 05/10/2005
  • Est. Priority Date: 09/09/1999
  • Status: Expired due to Fees
First Claim
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1. An adaptive multifilar antenna comprising:

  • a plurality of spaced filaments, at least a portion of the filaments being coupled together in a fixed phase relationship to form a group of filaments;

    a weighting circuit operable to apply variable phase adjustments to signals passed to and/or from the filaments, said weighting circuit being operable to apply a common variable phase adjustment to signals passed to and/or from the filaments of the group;

    detecting means operable to detect at least one electrical property of the adaptive multifilar antenna with respect to at least one of the frequency, polarization and/or direction of propagation of a signal to be received or transmitted by the adaptive multifilar antenna and impedance matching of the antenna; and

    control means, responsive to the detecting means, operable to control operation of the weighting circuit to adjust properties of the multifilar antenna to suit better a current signal to be received or transmitted.

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