Signal phase delay controlled data cables having dissimilar insu

Details Signal phase delay controlled data cables having dissimilar insu Signal phase delay controlled data cables having dissimilar insu

1996-08-01

1998-11-10

Ledynh, Bot L.

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

174 34, 174121A, H01B 1102

Patent

active

058346970

ABSTRACT:
A communication cable includes at least a first and a second twisted pairs of conductors. The first twisted pair of conductors is covered by a first insulation material, and the second twisted pair of conductors is covered by a second insulation material that is different than the first insulation material. The second twisted pair of conductors has a signal phase delay that is substantially equal to the signal phase delay of the first twisted pair of conductors such that the skew of the cable is substantially zero. In certain embodiments, the first insulation material is a fluoropolymer. In such embodiments, the second insulation material may be a nonfluoropolymer. In addition, the twist lay of the first twisted pair of conductors may be different than the twist lay of the second twisted pair of conductors. Moreover, the thickness of the first insulation material may be different than the thickness of the second insulation material.

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