Multiplex communications – Wide area network – Packet switching
Patent
1995-06-02
1998-02-10
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 32, 3403101, 3403103, 3403106, 3403107, 324127, 333177, 336182, H04B 354
Patent
active
057176850
ABSTRACT:
Apparatus for electrical line communication that includes a coupler at each of two or more locations along a pair of lines, the coupler having capacitive circuits serially connected with an air-core transformer. The capacitive circuit is designed to resonate with the air-core transformer at a preselected frequency. A transmitter, receiver and modem may also be provided at each location. The apparatus incorporates a novel phase linear coupler which eliminates noise and is matched resistively to the characteristic impedance of the line at a preselected frequency. This apparatus therefore linearizes communication on the line and allows high speed data and voice communication over long distances.
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Hom Shick
Olms Douglas W.
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