06950567 is referenced by 227 patents and cites 417 patents.

The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a single power line wire. An exemplary device includes a high frequency inductive coupling toroid for data signals, a second (50-60 Hz) inductive coupling toroid for providing power, signal conditioning electronics for the receive and transmit signal, a fiber optics interface for electrical isolation purposes, and a weather-proof enclosure. In a preferred embodiment, the toroids are hinged for ease of installation on a power line. A pair of such couplings on either side of a fiber-optic isolator can be used to bridge transformers.

Title
Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
Application Number
10/429338
Publication Number
6950567 (B2)
Application Date
May 2, 2003
Publication Date
September 27, 2005
Inventor
Paul A Kline
Gaithersburg
MD, US
Agent
Manelli Dension & Selter PLLC
Mel Barnes
Assignee
Current Technologies
MD, US
IPC
G02B 006/42
G02B 006/26
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