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PIFA, RFID tag using the same and antenna impedance adjusting method thereof

  • US 20070046543A1
  • Filed: 12/07/2005
  • Published: 03/01/2007
  • Est. Priority Date: 12/08/2004
  • Status: Active Grant
First Claim
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1. A Planar Inverted-F Antenna (PIFA), comprising:

  • a radiation patch having a radiating edge and a non-radiating edge;

    a grounding surface;

    at least one shorting plate for shorting the radiation patch from the grounding surface;

    a feeder for providing radio frequency (RF) power to the radiation patch; and

    a meander line extended from the radiating edge toward the grounding surface and positioned with a predetermined distance from the grounding surface.

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