Communication cable with embossed tape having encapsulated gas

Patent metadata

Field	Value
Publication number	US-9129727-B2
Application number	US-77180810-A
Country	US
Kind code	B2
Filing date	Apr 30, 2010
Priority date	May 4, 2009
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

A layered tape having pockets therein is used as part of a communication cable to improve alien crosstalk attenuation. In one embodiment, a single layered tape has an embossed layer bonded to a matrix tape layer having non-continuous conductive traces, with the resulting layered tape reducing alien crosstalk between cables. Pockets resulting from the embossing are filled with a gas such as dry air to decrease the dielectric constant through the effective thickness of the tape. A layered tape may alternatively be provided as a separate tape from a matrix tape, such that coupling between conductive pairs of the cable and the matrix tape is reduced. Decreasing the dielectric constant of materials between adjacent cables also decreases alien crosstalk coupling between the cables.

First claim

The invention claimed is:

1. A communication cable comprising:
a jacket;
a cable core comprising a plurality of twisted pairs of conductors; and
a layered tape surrounding said cable core, and disposed between said cable core and said jacket, said layered tape comprising a plurality of gas-filled pockets, each of said plurality of gas-filled pockets being non-continuous,
wherein no electrically shielding layer is disposed between said gas-filled pockets and said cable core,…

Assignees

• Caveney Jack E
• Nordin Ronald A
• Panduit Corp

Inventors

• Caveney Jack E
• Nordin Ronald A

Classifications

• H01B11/1008 Primary

  Electricity · mapped topic