1
Maki Masahiro, Igata Yuji, Wakizaka Toshiyuki: Coupler between different phase lines, mounting method therefor, and coupling method between different phase lines. Matsushita Electric, October 21, 2004: JP2004-297249 (123 worldwide citation)

PROBLEM TO BE SOLVED: To provide a coupler between different phase lines that can simply and safely be installed in order to obtain power communication between different phase lines of a single phase three-wire system.SOLUTION: In the coupler between the different phase lines, a first high frequency ...


2
Cern Yehuda: Arrangement of a data coupler for power line communications. Ambient Corporation, RUGGIERO Charles N J, April 29, 2004: WO/2004/036772 (122 worldwide citation)

An arrangement for coupling data between a power line (300) and a communication device (325) includes an inductive coupler (305) that employs a power line conductor as a primary winding, a capacitor (310) connected across a secondary winding of the inductive coupler (305) for creating a resonant cir ...


3
Wetherell Daniel L: Improved coupling arrangement for power line carrier systems. General Electric Company, November 5, 1974: US3846638 (87 worldwide citation)

A power line carrier system is coupled to two or more phase wires of an electrical power transmission line by transformers and coaxial transmission lines. Each phase wire to be used is provided with a coupling capacitor which is respectively coupled to one end of a coaxial line through an impedance ...


4
Yokoo Kenichi: Power line communication modem. Alps Electric, September 10, 2003: EP1343253-A1 (71 worldwide citation)

A power line communication MODEM (10) includes a MODEM main body portion (12) and a power supply portion (11) for converting an A.C. power source to a D.C. power source and supplying the D.C. power source to the main body portion through a cable. An attachment plug (11a) for inputting the A.C. power ...


5
Brown Paul A: Communications apparatus for propagating signals on a power transmission network. Norweb, May 6, 1999: EP0913955-A2 (59 worldwide citation)

Communications apparatus is disclosed which is adapted for use with a mains electricity transmission and/or distribution network, and includes signal transmission and/or reception means (232), and frequency conversion means (200-208) for converting the frequency of a signal transmitted or received b ...


6
Abraham Karoly Charles: Power-line communication apparatus.. Abraham Karoly Charles, February 12, 1992: EP0470185-A1 (54 worldwide citation)

Apparatus for power system communications includes a coupler at each of two or more locations along a pair of power-lines, the coupler having a pair of serial LC circuits with an air coil. A transmitter, a receiver, and a modem is also provided at each of the locations such that each of the serial L ...


7
Crampton Edward Christopher Th: Filtering electrical signals.. Emlux, May 15, 1985: EP0141673-A2 (49 worldwide citation)

A ferrite loop 21 encircles the line 11 and neutral 12, but not the earth cable 13 of a mains supply. The loop 21 also encircles a further loop 22 which comprises a capacitor 23. The further loop 22 including its capacitor 23 forms a parallel LC circuit which provides a high impedance to signals at ...


8
Valentini Nicola: High-frequency communication system using A-C utility lines. Societe Italiana Telecomunicazioni Siemens, Ross Karl F, Dubno Herbert, July 15, 1975: US3895370 (49 worldwide citation)

The conductors of an a-c (e.g. 60-cycle) utility line form a signal path for high-frequency communication, this path being bounded by two terminal coils each comprising a core which carries a plurality of low-inductance windings each in series with a respective line conductor. The windings all have ...


9
Brown Paul A: Signal transmission over power networks. Nor Web Dpl, April 5, 2000: GB2342264-A (43 worldwide citation)

An electricity distribution and/or power transmission network includes means for the input and output of a telecommunications signal onto or from an earth or neutral conductor of the network. The neutral or earth conductor is substantially isolated from the electrical earth e.g. by a suitable induct ...


10
Dzung Dacfey Dr: Method and device for signal communication over power lines. Abb Research, October 6, 1999: EP0948143-A2 (42 worldwide citation)

The high voltage electrical power lines (1-3) are connected to couplers (8-10) that also allow data signals (X1-X3) to be introduced and transmitted as well. The data signals are received by a combination circuit (4) and are converted into a modulated form. At the receiver end the signals are decoup ...