Belden Inc.

General Cable Technologies Corporation

Panduit Corporation

Roy Kusuma

Scott M Brown

Stephen A Thwaites

James D Malkemus

Masud Bolouri-Saransar

Ronald Alex Nordin

William T Clark

Paul W Wachtel

Royal O Jenner

Bill Clark

Alice Albrinck

Srinivas Siripurapu

David M Fausz

Eric W Bates

Sean William Culligan

Jianmin Liu

Alex Chattin

Anthony Carson New

Caspar Michael Arbeeny

The present disclosure describes manifold lay lengths for each twisted pair of conductors in a cable comprising at least one twisted pair of insulated conductors, reducing both internal and alien crosstalk. The lay length of each pair can be adjusted, either continuously or in discrete steps, between a shortest lay length and a longest lay length, such that each pair has each lay length at some longitudinal point along the cable. The lay lengths of each pair are staggered in their progression between shortest and longest lay length to avoid pairs having the same lay lengths for any significant length along the cable.

Manifold pair lay data cable

Methods of design, manufacture and implementations of balanced twisted pair cables with a barrier tape or shield, with tuned attenuation, impedance, and coupling properties. A filler is included within the cable to separate the pairs and provide a support base for the shield, allowing for optimized ground plane uniformity and stability for tuned attenuation, impedance, and coupling properties. The filler orientation, shape, and size provides support for the shield such that a gap is provided between the shield and the twisted pairs with a given minimum size without increasing the maximum cable core size. The length of arms of the filler may be adjusted to fine-tune the size and shape of this gap and control air-dielectric volume and radial contact or spacing between any pair(s) and the shield, tuning electrical performance characteristics caused by non-linear effects of electromagnetic interactions at short ranges between the pairs, shield, filler, or other components.

Shield-supporting filler for data communications cables

The present disclosure describes methods of manufacture and implementations of hybrid separators for data cables having conductive and non-conductive or metallic and non-metallic portions, and data cables including such hybrid separators. A hybrid separator comprising one or more conductive portions and one or more non-conductive portions may be positioned within a data cable between adjacent pairs of twisted insulated and shielded or unshielded conductors so as to provide physical and electrical separation of the conductors. The position and extent (laterally and longitudinally) of each conductive portion and each non-conductive portion may be selected for optimum performance of the data cable, including attenuation or rejection of cross talk, reduction of return loss, increase of stability, and control of impedance.

Hybrid high frequency separator with parametric control ratios of conductive components

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.

Communications cable with improved isolation between wire-pairs and metal foil tape

Twisted pair data communication cables with modified delay skew values to improve electrical performance are disclosed. Methods of making and using the cables are also disclosed.

Data communication cable having modified delay skew

A cable includes a first twisted pair of insulated conductors, a second twisted pair of insulated conductors, a shielding tape, and an outer jacket surrounding the first twisted pair of insulated conductors, the second twisted pair of insulated conductors and the shielding tape. The shielding tape includes a substrate and a plurality of conductive shielding segments. The plurality of conductive shielding segments is disposed on the substrate. Each conductive shielding segment is spaced from each immediately adjacent conductive shielding segment in a longitudinal direction.

Cable having shielding tape with conductive shielding segments

A data cable can include a plurality of insulated conductors twisted into pairs, an intumescent tape surrounding one or more of the insulated conductors, and a jacket. Each of the plurality of insulated conductors includes a conductor and an insulation layer. Data cables being fluoropolymer-free or halogen free are also described herein.

Data cables having an intumescent tape

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Cincinnati, OH, United States of America

Roy Kusuma