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Tunable inverted F antenna

  • US 8,614,650 B2
  • Filed: 03/29/2010
  • Issued: 12/24/2013
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. A planar antenna, comprising:

  • a ground plane extending in a first direction on a substrate;

    a radiating element coupled to the ground plane on the substrate, said radiating element defined by a first portion extending in a substantially perpendicular direction from the ground plane, and a second portion extending in a substantially perpendicular direction from said first portion of the radiating element;

    a feed line coupled to the radiating element, said feed line disposed between the second portion of the radiating element and the ground plane, said coupling defining an impedance tap point of said antenna; and

    an impedance adjustment mechanism disposed in the first portion of the radiating element, said impedance adjustment mechanism comprises at least one pair of contacts between the radiating element and the feed line, wherein coupling of the at least one pair of contacts alters the impedance tap point of the antenna.

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