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Systems and methods using single antenna for multiple resonant frequency ranges

  • US 9,047,523 B2
  • Filed: 02/18/2014
  • Issued: 06/02/2015
  • Est. Priority Date: 05/20/2008
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a radio frequency communication apparatus having an antenna and configured to operate within multiple frequency ranges in a field of wireless communication; and

    a device havinga memory storing an identification number uniquely identifying the device among a plurality of devices for wireless communication in the field with the radio frequency communication device, the plurality of devices storing respective identification numbers;

    a device antenna having a single antenna structure resonant on the multiple frequency ranges, anda circuit coupled with the device antenna and configured to use the single antenna structure to communicate, simultaneously over the multiple frequency ranges, with the communication apparatus according to different protocols;

    where each protocol of the different protocols uses a respective frequency range of the multiple frequency ranges.

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