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Methods for Adjusting the Power of an External Reader

  • US 20150188607A1
  • Filed: 12/30/2013
  • Published: 07/02/2015
  • Est. Priority Date: 12/30/2013
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an antenna configured to;

    receive electromagnetic radiation to form a supply signal,output a backscatter signal based on the received electromagnetic radiation, andadjust an antenna impedance to cause the backscatter of the received electromagnetic radiation;

    a rectifier configured to rectify the supply signal into a supply voltage;

    a measurement unit configured to measure the supply voltage; and

    a control unit configured to cause the antenna impedance to communicate the measured supply voltage via the backscatter of received electromagnetic radiation.

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