Power line communications system and coupling circuit for power

Details Power line communications system and coupling circuit for power Power line communications system and coupling circuit for power

1995-05-09

1998-01-06

Mullen, Thomas

Communications: electrical

Systems

Selsyn type

34031007, 34031005, 34031001, 333 32, H04M 1104

Patent

active

057059748

ABSTRACT:
A coupling circuit for a power line communications system for coupling information signals from a transmitter unit to a power line and for coupling information signals from the power line to a receiver unit. The coupling circuit includes: (a) a ferrite core coupler for isolating the transmitter unit or the receiver unit from a power line and for coupling information signals from the transmitter unit to the power line and from the power line to the receiver unit, (b) a bandpass filter for selectively passing information signals from the transmitter unit to thew power line and from the power line to the receiver unit, and (c) an impedance matching pad for matching the impedance of the transmitter unit to the impedance at an outlet connected to the power line and to which the transmitter unit is connected and the receiver unit to the impedance at an outlet connected to the power line and to which the receiver unit is connected.

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patent: 3925728 (1975-12-01), Whyte
patent: 4277978 (1981-07-01), Puckette
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patent: 4745391 (1988-05-01), Gajjar
patent: 4847903 (1989-07-01), Schotz
patent: 4973940 (1990-11-01), Sakai et al.
patent: 4980665 (1990-12-01), Schotz
patent: 5210519 (1993-05-01), Moore
patent: 5455467 (1995-10-01), Young et al.
Copy/European Search Report.

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