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RFID system and method

  • US 10,467,520 B2
  • Filed: 04/03/2019
  • Issued: 11/05/2019
  • Est. Priority Date: 09/06/2007
  • Status: Active Grant
First Claim
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1. A processing system comprising:

  • a housing assembly comprising an access door, wherein the access door comprising an RFID antenna assembly configured to be energized with a carrier signal, the RFID antenna assembly comprising;

    an inductive component including a multi-segment loop antenna assembly, wherein the multi-segment loop antenna assembly includes;

    at least a first antenna segment including at least a first phase shift element configured to reduce the phase shift of the carrier signal within the at least a first antenna segment; and

    at least a second antenna segment including at least a second phase shift element configured to reduce the phase shift of the carrier signal within the at least a second antenna segment,wherein the length of each antenna segment is no more than 25% of the wavelength of the carrier signal;

    at least one matching component configured to adjust the impedance of the multi-segment loop antenna assembly; and

    a de-Qing element configured to allow the RFID antenna assembly to be utilized over a range of carrier signal frequencies,wherein the inductive component is configured to be positioned proximate an access assembly of a processing system and to allow RFID-based actuation of the access assembly, andwherein the access door only opens if the appropriate RFID tag assembly is positioned proximate the RFID antenna assembly.

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