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Slot fed multi-band antenna

  • US 6,191,740 B1
  • Filed: 06/05/1999
  • Issued: 02/20/2001
  • Est. Priority Date: 06/05/1999
  • Status: Expired due to Term
First Claim
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1. An antenna circuit comprising:

  • an antenna member having a first length with a high resonance frequency, a second length with a low resonance frequency, and a switch member for alternating between said first length and said second length;

    a dielectric substrate coupled to said antenna member;

    a bottom ground plane adjacent to said dielectric substrate;

    a feed member positioned in said dielectric substrate, said feed member interposed between said bottom ground plane and said antenna member; and

    a top ground plane interposed between said dielectric substrate and said antenna member, said top ground plane containing a radiating array having a first radiating frequency and a second radiating frequency.

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