Passive signal coupler between power distribution systems for the transmission of data signals over the power lines
First Claim
1. A passive signal coupler coupling a first alternating current (AC) power distribution system to a second AC power distribution for conducting radio frequency (RF) data signals from said first AC power distribution system to said second AC power distribution system thereby bypassing a power transformer which also couples said first and said second AC power distribution systems for passing AC power energy, said passive signal coupler comprising:
- first means coupled to said first AC power distribution system for passing said RF data signals but not passing said AC power energy received from said first AC power distribution system;
second means coupled to said second AC power distribution system for passing said RF data signals but not passing said AC power energy to said second AC power distribution system; and
third means having a first winding wound around a core and a second winding wound around said core wherein said first winding is coupled to said first means for receiving said RF data signals and said second winding is coupled to said second means for generating said RF data signal for transmission over said second AC power distribution system.
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Accused Products
Abstract
A passive signal coupler transfers data signals being transmitted over AC power lines from a first AC power distribution system to a second AC power distribution system. Each leg of the passive signal coupler coupled to a phase of the power line voltage includes a series LC circuit, tuned to the data signal carrier frequency. Each leg coupled to the first power system is terminated in a first winding of a transformer. Each leg coupled to the second power system is terminated in a second winding of the transformer.
181 Citations
14 Claims
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1. A passive signal coupler coupling a first alternating current (AC) power distribution system to a second AC power distribution for conducting radio frequency (RF) data signals from said first AC power distribution system to said second AC power distribution system thereby bypassing a power transformer which also couples said first and said second AC power distribution systems for passing AC power energy, said passive signal coupler comprising:
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first means coupled to said first AC power distribution system for passing said RF data signals but not passing said AC power energy received from said first AC power distribution system; second means coupled to said second AC power distribution system for passing said RF data signals but not passing said AC power energy to said second AC power distribution system; and third means having a first winding wound around a core and a second winding wound around said core wherein said first winding is coupled to said first means for receiving said RF data signals and said second winding is coupled to said second means for generating said RF data signal for transmission over said second AC power distribution system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification