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RFID extended operation range system, apparatus and method

  • US 10,185,912 B2
  • Filed: 09/11/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 09/12/2014
  • Status: Active Grant
First Claim
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1. A two part RFID tag system capable of communicating with an interrogator antenna, the two part RFID tag system comprising:

  • a first part being an RFID tag, anda second part being a coupling device having a first end and an opposed second end, the coupling device operably associating with the first part for the purpose of interrogation, the coupling device, in operation, being adapted to enhance the magnetic field so as to enhance communication between the first part and an interrogator antenna,wherein the second part comprises an elongate permeable rod positioned proximal the RFID tag, the permeable rod capable of allowing a magnetic field of the interrogator antenna to pass there-through for enhancing the magnetic field around the RFID tag,wherein the second part further comprises a conductive screen wrapped at least partially around the permeable rod, the conductive screen adapted to substantially limit leaking of the magnetic field across the length of the permeable rod,wherein the RFID tag is positioned at the first end of the coupling device and the coupling device is configured to route communication between the RFID tag and the interrogator antenna when placed in proximity to the opposed second end, andwherein the coupling device is external to the RFID tag.

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