H - Electricity – 04 – B
Patent
H - Electricity
04
B
340/79
H04B 3/54 (2006.01) H02J 13/00 (2006.01) H04B 3/56 (2006.01)
Patent
CA 1177928
13 48,774 ABSTRACT OF THE DISCLOSURE A communication system for a three-phase power distribution network is comprised of a plurality of remote devices, with certain of the remote devices being used as signal repeaters. Injection point circuitry provides an out-going communication signal which is coupled to the three-phase conductors such that each phase conductor carries an identical, independent, outgoing communication signal. The signal repeaters are each coupled to at least two of the three-phase conductors. Each signal repeater includes circuitry for producing a composite signal in response to the coupled signals. The composite signal has a signal-to-noise ratio typically superior to, but not worse than, the signal-to-noise ratio of the best of the coupled signals. The remainder of the remote devices are independently coupled to at least one of the three-phase conductors so as to facilitate communication with each of the remote devices.
400050
Oldham And Company
Westinghouse Electric Corporation
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