RFID transceiver sensitivity focusing system

  • US 7,812,779 B2
  • Filed: 02/06/2007
  • Issued: 10/12/2010
  • Est. Priority Date: 02/06/2007
  • Status: Active Grant
First Claim
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1. A system for focusing sensitivity of an RFID transceiver, the system comprising in combination:

  • an RFID transceiver antenna;

    said RFID transceiver antenna adapted to be located proximate to but spaced from a monitoring zone;

    said RFID transceiver antenna adapted to establish an RF field within the monitoring zone;

    shielding interposed between said antenna and the monitoring zone;

    an aperture formed in said shielding;

    said shielding formed at least partially of thin plastic anti-static film;

    wherein said antenna includes a body with a lower surface oriented in a substantially horizontal plane, both said body of said antenna and said shielding oriented to overlie said monitoring zone; and

    wherein said shielding includes at least two separate sheets oriented parallel with each other and spaced from each other by a distance at least as great as a width of said aperture, said separate sheets oriented non-horizontally.

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