Communications cable with improved isolation between wire-pairs and metal foil tape
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United States of America Patent
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Aug 6, 2019
Grant Date -
Mar 7, 2019
app pub date -
Aug 7, 2018
filing date -
Aug 9, 2017
priority date (Note) -
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Abstract
A communications cable having a plurality of twisted pairs of conductors and various embodiments of a metal foil tapes between the twisted pairs and a cable jacket is disclosed. In some embodiments, a metal foil tape includes a discontinuous metal layer and a polymer layer bonded to the metal layer. Portions of the metal layer and the polymer layer are deformed to form a plurality of dimples, the dimples forming air gaps between the polymer layer and the cable core or a barrier layer if used. The air gaps lower the overall dielectric constant between the metal layer and the cable core, thereby lowering the alien capacitance of the communications cable.
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