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System and method for reducing radiation when distributing broadband communication signals over power lines

  • US 20050194838A1
  • Filed: 03/03/2004
  • Published: 09/08/2005
  • Est. Priority Date: 03/03/2004
  • Status: Active Grant
First Claim
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1. A system for decreasing high frequency (HF) radiation emission in a power line comprising:

  • a first transmitter configured to transmit a utility power signal over said power line;

    a second transmitter configured to transmit a high frequency communication signal over said power line so as to provide a combined utility and high frequency signal over said power line; and

    a plurality of modulators, each of which providing a differential output signal to at least two phases of said power line such that the same high frequency data signal is transmitted via at least said two phases of the power transmission line in an out-of-phase arrangement.

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