Coupling communications signals to a power line

Details Coupling communications signals to a power line Coupling communications signals to a power line

1997-10-03

2000-03-14

Elms, Richard T.

Electrical transmission or interconnection systems

Anti-induction or coupling to other systems

34031001, H04M 1104

Patent

active

060376783

ABSTRACT:
A power line communications system has a power line having a plurality of conductors which carry communications signals. A set of communications signals are coupled to a set of the plurality of conductors, each signal being coupled to a respective one of the set of conductors and the phasor relationship of the set of communications signals is chosen such that radiation of communications signals from the power line is minimised. The phasor relationship may be achieved by phase shifting one or more of the signals. This method allows communications signals to be transmitted at higher power levels, thereby extending range of transmission, while minimizing radiation from the line.

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