US 20030054793A1
(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2003/0054793 Al
Manis et al. (43) Pub. Date: Mar. 20,2003
(54) COUPLING BETWEEN POWER LINE AND CUSTOMER IN POWER LINE COMMUNICATION SYSTEM
(76) Inventors: Constantine N. Manis, Monmouth
Junction, NJ (US); Oleg Logvinov, East
Brunswick, NJ (US); Larry Durfee,
Washington, NJ (US)
Correspondence Address:
L. P. Brooks, Esq.
Norris, McLaughlin & Marcus
P.O. Box 1018
Somerville, NJ 08876-1018 (US)
(21) Appl. No.: 10/219,520
(22) Filed: Aug. 15, 2002
Related U.S. Application Data
(60) Provisional application No. 60/313,051, filed on Aug. 17, 2001.
Apparatus for coupling communication signal modulated radio frequency signals between an electrical power distribution line and the electrical power wiring at a customer's premises which includes a first transceiver for transmitting and receiving electromagnetic energy is inductively coupled to the distribution line and a second transceiver for receiving electromagnetic energy from, and transmitting electromagnetic energy to, the first transceiver. The second transceiver is coupled to the customer's power wiring to receive communication signals from, and to supply communication signals to, the customer's power wiring. The electrical power for the first transceiver can be supplied by inductive coupling to the power line and/or a battery, the battery being a back-up source when both inductive coupling and a battery are present.
