Communications cables with oppositely twinned and bunched insulated conductors
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United States of America Patent
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Aug 3, 2004
Grant Date -
Aug 14, 2003
app pub date -
Feb 12, 2002
filing date -
Feb 12, 2002
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Abstract
A communications cable comprises an elongate cable jacket having an internal cavity and a plurality of twisted pairs of insulated conductors disposed in the internal cavity of the cable jacket, each of the conductors being insulated with a polymeric layer. Each of the insulated conductors within each of the twisted pairs of conductors defines a twinning helix having a first rotative direction, and each of the twisted pairs defines a bunching helix having a second rotative direction, the second rotative direction being opposite that of the first rotative direction. In this configuration, the communications cable can provide acceptable crosstalk and attenuation performance, even with foamed insulators that have demonstrated unacceptable performance when twinned and bunched in the same rotative direction.
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