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Multi-Band Built-in Antenna for Independently Adjusting Resonant Frequencies and Method for Adjusting Resonant Frequencies

  • US 20070236391A1
  • Filed: 06/23/2005
  • Published: 10/11/2007
  • Est. Priority Date: 06/26/2004
  • Status: Active Grant
First Claim
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1. A multi-band built-in antenna, comprising:

  • a main radiating element connected to a ground part and a feed part, the main radiating element being parallel to a ground plane;

    a secondary radiating element arranged parallel to the main radiating element; and

    a connecting element connecting the main radiating element and the secondary radiating element, which defines a slit between the main radiating element and the secondary radiating element, wherein the secondary radiating element has a length such that the antenna resonates to a first resonant frequency, and the connecting element has a width such that the antenna resonate to a second resonant frequency.

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