Communication filter for unshielded, twisted-pair cable

Details Communication filter for unshielded, twisted-pair cable Communication filter for unshielded, twisted-pair cable

1990-11-08

1992-03-10

LaRoche, Eugene R.

Wave transmission lines and networks

Transmission line inductive or radiation interference...

333177, 333181, 375 36, H04B 328

Patent

active

050952919

ABSTRACT:
An electrical data filter is provided for reducing noise reception and generation for data signal which is transmitted differentially on two conductors constituting the twisted-pair cable. The data filter includes an in-line transformer and a shunt transformer. The in-line transformer has a winding (i.e. the primary or secondary) in series with each line of the twisted pair. These windings are arranged so that they are wound in the same direction. Similarly, the shunt transformer includes a winding which shunts each wire of the twisted pair to ground through a series capacitor. These shunt windings are wound in opposite directions to each other.

REFERENCES:
patent: 4326287 (1982-04-01), Abramson
patent: 4751607 (1988-06-01), Smith
patent: 4766402 (1988-08-01), Crane

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