Coupling communications signals to underground power lines
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United States of America Patent
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Feb 23, 2010
Grant Date -
Jan 18, 2007
app pub date -
Jun 23, 2006
filing date -
Jul 15, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In one embodiment, a system for coupling communications signals to an underground medium-voltage power line includes a medium-voltage power line, a ground conductor, one or more ferrites, and a low-voltage communications line. The medium-voltage power line includes a center phase conductor and a concentric neutral conductor. The ground conductor couples the concentric neutral conductor to a ground connection. The one or more ferrites substantially surround at least a portion of the ground conductor. The low-voltage communications line includes a first conductor and a second conductor. The first conductor is coupled to the ground conductor between the one or more ferrites and the concentric neutral conductor. And the second conductor is coupled to the ground conductor between the one or more ferrites and the ground connection.
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