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RFID variable aperture read chamber crossfire

  • US 9,830,486 B2
  • Filed: 12/29/2014
  • Issued: 11/28/2017
  • Est. Priority Date: 06/05/2014
  • Status: Active Grant
First Claim
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1. A read chamber device for use within a radio frequency identification (RFID) scanning enclosure for providing a means of reading a plurality of cartons moving through the enclosure, comprising:

  • at least one antenna positioned within the read chamber device;

    wherein the at least one antenna projects radio frequency energy from a front plane of the at least one antenna; and

    a plurality of absorber material components positioned on either side of the at least one antenna;

    at least one movable plate positioned at an end of the read chamber opposite the at least one antenna; and

    wherein radio frequency energy projected to sides of the front plane of the at least one antenna is canceled through use of the plurality of absorber material components to create a read zone; and

    wherein the read zone is adjustable in area by re-positioning the at least one movable plate to at least partially cover the read zone.

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