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Parasitic element and PIFA antenna structure

  • US 7,053,841 B2
  • Filed: 07/31/2003
  • Issued: 05/30/2006
  • Est. Priority Date: 07/31/2003
  • Status: Expired due to Fees
First Claim
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1. An antenna, comprising:

  • a PIFA for wireless operation within at least one frequency band; and

    a parasitic element positioned to be operatively coupled to the PIFA, wherein the parasitic element is obmically isolated from ground, and wherein RF energy is radiantly coupled between the parasitic element and the PIFA, and the parasitic element is configured and positioned so as to further induce wireless operation of the PIFA within at least one additional frequency band;

    wherein the PIFA is mounted above a ground plane, the PIFA having a first side facing a plane containing the ground plane and wherein the parasitic element is located above a second side of the PIFA that is opposite the first side.

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