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RFID device with microstrip antennas

  • US 7,561,107 B2
  • Filed: 09/07/2006
  • Issued: 07/14/2009
  • Est. Priority Date: 09/07/2006
  • Status: Active Grant
First Claim
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1. A Radio Frequency Identification (RFID) device, comprising:

  • first and second sides;

    a first microstrip antenna extending along the first side, the first microstrip antenna comprising a microstrip positioned towards the first side, a Radio Frequency—

    (RF-)reflective back plane, and a dielectric spacer positioned between the microstrip and the back plane;

    a second microstrip antenna extending along the second side, the second microstrip antenna comprising a microstrip positioned towards the second side, an RF-reflective back plane, and a dielectric spacer positioned between the microstrip of the second microstrip antenna and the back plane of the second microstrip antenna; and

    circuitry for receiving signals from the first and second microstrip antennas,wherein the first and second microstrip antennas are each independently coupled to the circuitry.

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