Patent ID: 8178994
Filing Date: 2012-05-15
Classification: H04B

Abstract:
1. A method for communicating over an electrically conductive line having a plurality of power line phases between a first device having a single receiver and plurality of distal devices, the power line phases being adapted to deliver an alternating electrical current, each of the distal devices being adapted to communicate with the first device over a single phase through a modulated carrier signal at a single narrow communication frequency band which is not the frequency of the alternating electrical current, the method comprising the steps of: attaching in electrical communication a unique coupling phase to a corresponding power line phase of said plurality of power line phases for receiving the single narrow communication frequency band having the modulated carrier signal from each of the plurality of power line phases, and out of the path of flow of the power line phase; selectively coupling said plurality of phases to each other such that said single narrow communication frequency band is receivable on said unique coupling phase at the first device while minimizing signal coupling between said plurality of phases.