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Dual band antenna for a handset

  • US 6,271,794 B1
  • Filed: 12/21/1999
  • Issued: 08/07/2001
  • Est. Priority Date: 12/22/1998
  • Status: Expired due to Term
First Claim
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1. An antenna device having:

  • a first metallic layer acting as a resonator plane and defining at least two radiating elements separated by a first slit;

    a second metallic layer arranged substantially in parallel with the first metallic layer and acting as a ground plane for the antenna device;

    feeding means connected to said first and the second metallic layer for feeding an RF signal to the antenna device, said feeding means includes a feeding point in the first metallic layer; and

    wherein said first metallic layer is provided with a second slit extending from said first slit, the first and second slits forming a substantially branch shape, with the feeding point placed on a metallised tongue between the first and second slit, whereby surface currents have to pass around the tips of the slits towards the radiating elements.

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