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Narrow-band, crossed-element, offset-tuned dual band, dual mode meander line loaded antenna

  • US 6,480,158 B2
  • Filed: 05/31/2001
  • Issued: 11/12/2002
  • Est. Priority Date: 05/31/2000
  • Status: Active Grant
First Claim
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1. A dual-band antenna for simultaneous operation in a first frequency band and a second frequency band, comprising:

  • a) a ground plane;

    b) a first meander line loaded antenna element tuned to a first loop mode frequency and having a first monopole resonant frequency, said first antenna element being disposed upon said ground plane, wherein said first meander line loaded element comprises a first pair of vertical sides extending approximately perpendicularly from said ground plane and a first horizontal section juxtaposed between said vertical sides, wherein there are gaps between said first horizontal section and said vertical sides with a first meander line mounted at said gaps;

    c) a second meander line loaded antenna element tuned to a second loop mode frequency, said second antenna element having a second monopole resonant frequency, said second antenna element being disposed upon said ground plane, wherein said second meander line loaded element comprises a second pair of vertical sides extending approximately perpendicularly from said ground plane and a second horizontal section juxtaposed between said vertical sides, wherein there are gaps between said second horizontal section and said vertical sides with a second meander line mounted at said gaps;

    d) a means for capacitive tuning said first monopole resonant frequency of said first antenna element to a first monopole frequency; and

    e) a means for capacitive tuning said second monopole resonant frequency of said second antenna element to a second monopole frequency.

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