Transformer coupler for communication over various lines

Details Transformer coupler for communication over various lines Transformer coupler for communication over various lines

1997-03-14

2000-08-15

Olms, Douglas W.

Multiplex communications

Duplex

Frequency division

370281, 34031001, 340531, 375222, 379443, H04M 1104

Patent

active

061047074

ABSTRACT:
An apparatus for electrical line communication includes a transmitter, a receiver, a modem, and a coupler at each of two or more locations along an electrical line. The couplers have capacitive circuits serially connected with an air-core transformer. The capacitive circuits resonate with the air-core transformer at a preselected frequency. A novel phase linear coupler eliminates noise and is matched resistively to the characteristic impedance of the line at the preselected frequency, which linearizes communication on the line and allows high speed data and voice communication over long distances.

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