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On-Chip Stimulus Generation for Test and Calibration of NFC Reader Receivers

  • US 20150249510A1
  • Filed: 09/12/2013
  • Published: 09/03/2015
  • Est. Priority Date: 09/17/2012
  • Status: Active Grant
First Claim
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1. A method of determining a calibration of a near field communication, NFC, device, the NFC device comprising a receiver circuit, a transmitter circuit and a load modulator circuit, the method comprising:

  • generating a carrier signal in the transmitter circuit,generating a modulation signal in the load modulator circuit,generating a modulated carrier signal, comprising first and second frequencies, by applying the modulation signal to the carrier signal,applying the modulated carrier signal at an input of the receiver circuit, anddetermining a response parameter of the receiver circuit on the basis of the response of the receiver circuit to the first and second frequencies in the modulated carrier signal.

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