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Integrated circuit with electromagnetic communication

  • US 9,444,146 B2
  • Filed: 03/22/2012
  • Issued: 09/13/2016
  • Est. Priority Date: 03/24/2011
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a first transducer configured to convert electromagnetic signals into electrical signals; and

    a first integrated circuit (IC) operatively coupled to the first transducer, the IC including;

    a receiver circuit for receiving from the first transducer a first radio-frequency electrical signal and transforming the first radio-frequency electrical signal into a first baseband signal, and outputting the first baseband signal when a control signal has a first state and not when the control signal has a second state different than the first state; and

    a signal-detector circuit generating a monitor signal representative of a strength of the received first radio-frequency electrical signal based on the first baseband signal, the signal-detector circuit further generating the control signal with the first state when the monitor signal indicates the received first radio-frequency electrical signal is an acceptable signal and with the second state when the monitor signal indicates the received first radio-frequency electrical signal is not an acceptable signal,wherein the signal-detector circuit includes a comparator for comparing the monitor signal representative of the strength of the received radio-frequency electrical signal to a reference corresponding to a predetermined threshold level, the signal-detector circuit generating the control signal in response to an output of the comparator.

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