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CIRCULARLY POLARIZED OMNIDIRECTIONAL IN-BUILDING SIGNAL BOOSTER APPARATUS AND METHOD

  • US 20090156118A1
  • Filed: 12/12/2007
  • Published: 06/18/2009
  • Est. Priority Date: 12/12/2007
  • Status: Active Grant
First Claim
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1. An antenna having at least one bay, wherein a first antenna bay comprises:

  • a coaxial input port with an outer conductor that serves as a reference potential;

    a first radiative component, comprising;

    a first substantially arcuate dipole positioned as a quasi-helix with reference to a vertical antenna axis, wherein a location on the dipole proximal to a midpoint thereof is a reference node of the dipole, and wherein a location on the dipole distal to the midpoint thereof is a feed node of the dipole;

    a number n−

    1, for n greater than or equal to 1, of additional arcuate dipoles, substantially identical to the first dipole, distributed substantially uniformly with azimuth about the vertical antenna axis; and

    a cross arm, having a hub in a plane perpendicular to the vertical axis, connected to the input port outer conductor, and operative to connect the port to the n dipoles at the respective reference nodes on the n dipoles; and

    a power distribution manifold, comprising;

    a feed line originating from a center conductor of the coaxial input port;

    a manifold feed plate central node connected to the feed line;

    a number n of feed blades connecting the central node to the respective feed nodes of the n dipoles; and

    a number n of tuning paddles respectively connected to the feed blades.

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