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Quadrifilar helix antenna

  • US 5,635,945 A
  • Filed: 05/12/1995
  • Issued: 06/03/1997
  • Est. Priority Date: 05/12/1995
  • Status: Expired due to Term
First Claim
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1. An antenna comprising:

  • a plurality of conductive elements, said plurality of conductive elements defining a plurality of helically twisted loops, said helically twisted loops each having a different electrical length and electrically connected to each other through a shared common segment; and

    an unbalanced transmission line having a first and a second conductor, said first conductor connected to a first end of a capacitor, said capacitor having a second end connected through a conductor to a tap point on at least one of said conductive elements and said second conductor connected to a midpoint of a common conductor section for performing impedance matching, electrical phasing, coupling and power distribution of said antenna.

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