System and method for reducing radiation when distributing broadband communication signals over power lines
First Claim
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.
1 Assignment
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Accused Products
Abstract
A system for decreasing high frequency (HF) radiation emission in a power line comprises a first transmitter configured to transmit a utility power signal over the power line. A second transmitter transmits a high frequency communication signal over the power line so as to provide a combined utility and high frequency signal. A plurality of modulators, each of which provides a differential output signal to at least two phases of the power line such that the same high frequency data signal is transmitted via at least two phases of the power transmission line in an out-of-phase arrangement.
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Citations
26 Claims
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1. A system for decreasing high frequency (HF) radiation emission in a power line comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The system in accordance with clam 6, wherein said out-of-phase output port is coupled to said second amplifier via a wire link.
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11. A system for decreasing high frequency (HF) radiation emission in a power line comprising:
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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 an output signal to a corresponding phase of said power line, wherein the same high frequency data signal is transmitted via at least two phases of the power line in an out-of-phase arrangement. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for decreasing high frequency (HF) radiation emission in a power line comprising the steps of:
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transmitting a utility power signal over said power line; and
transmitting a high frequency communication signal via a balanced arrangement such that the same high frequency data signal is transmitted via at least two of the phases of the power line in an out-of-phase arrangement. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification