Transformer coupler for communication over various lines

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

1994-07-01

1996-09-24

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Electromagnet or highly inductive systems

330149, 343850, 343867, 34031007, 455280, 359161, H01F 2742

Patent

active

055593771

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.

REFERENCES:
patent: 4449128 (1984-05-01), Weir
patent: 4525650 (1985-06-01), Hicks et al.
patent: 5191338 (1993-03-01), Katz et al.

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