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BALANCE-FED HELICAL ANTENNA

  • US 20080316138A1
  • Filed: 10/26/2007
  • Published: 12/25/2008
  • Est. Priority Date: 10/26/2007
  • Status: Abandoned Application
First Claim
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1. An antenna, comprising:

  • a dielectric core region having cylindrical shape defining a top surface, a bottom surface, and a side surface;

    two laterally opposed conductive linking tracks at said top surface;

    two groups of conductive antenna elements, wherein each said group includes mutually adjacent instances of at least two said antenna elements that connect to a respective said linking track and extend across said top surface and extend at least partially down said side surface;

    said core region having an axial passage extending from said bottom surface to said top surface;

    a feed line having two conductors, wherein said feed line extends from outside of the antenna, through said axial passage to said top surface; and

    a balun having two input terminals and two output terminals, wherein said input terminals each connect respectively to a said conductor of said feed line and said output terminals each connect respectively to a said linking track.

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