Transceiver front-end for communication over power lines
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United States of America Patent
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Mar 14, 2017
Grant Date -
Mar 31, 2016
app pub date -
Sep 28, 2015
filing date -
Sep 29, 2014
priority date (Note) -
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Abstract
Various circuits and methods are disclosed for communications over AC power lines. In one example embodiment, a power line communication circuit includes an analog front end having a data-coupling circuit configured to communicatively couple communication signals to and from a set of AC power lines in the power line communication system. The analog front end also includes a noise reduction circuit that is coupled to the data-coupling circuit. The noise reduction circuit is configured to mitigate noise within a communication frequency band of the communication signals by filtering, from the communication signals, at least one frequency that is located outside of the communication frequency band and that has harmonics located within the communication frequency band and to demodulate data from the communication frequency band of the filtered communication signals.
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