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Near field communications (NFC) modulation feedback apparatus for tuned antenna configurations

  • US 9,461,716 B2
  • Filed: 03/02/2015
  • Issued: 10/04/2016
  • Est. Priority Date: 03/02/2015
  • Status: Active Grant
First Claim
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1. A near field communication (NFC) device comprising:

  • an antenna configured to receive a modulated NFC carrier frequency signal;

    a modulation detector coupled to the antenna, wherein the modulation detector is configured to detect measure a modulation characteristic of the received modulated NFC carrier frequency signal;

    an NFC controller configured to receive the detected modulation characteristic from the modulation detector, wherein the NFC controller is further configured to perform a calibration adjustment based on the detected modulation characteristic;

    and a connection that connects the NFC controller to the antenna.

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