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Dual polarized three-sector base station antenna with variable beam tilt

  • US 7,196,674 B2
  • Filed: 11/21/2003
  • Issued: 03/27/2007
  • Est. Priority Date: 11/21/2003
  • Status: Expired due to Fees
First Claim
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1. An antenna, comprising:

  • a ground plane having an upper surface and an opposing lower surface;

    a plurality of dipoles extending outwardly from the upper surface;

    a set of feedlines disposed proximate the upper surface and coupled to the dipoles;

    a set of striplines disposed upon the lower surface and coupled through the ground plane to the set of feedlines, andat least one sliding dielectric member adjustably disposed proximate a portion of the set of striplines and adapted to shift a phase velocity of a signal communicating therepast to the dipoles, wherein the set of striplines have a plurality of serpentine portions each having a respective said dielectric member slidingly disposed thereupon.

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