摘要:
The invention provides a composite wrapping and shielding tape for use in cable manufacture. Embodiments of the composite tape comprise a single tape configuration to separate and shield individual pairs of insulated conductors housed within a cable such as a high-speed data communications cable. The single tape configurations of the invention are multifolded and assembled from foil/film laminates to form a plurality of longitudinal channels or grooves to accommodate one or more pairs of insulated conductors and a variety of cable designs. During cable manufacture, one or more pairs of insulated conductors is wrapped within a continuous shield provided by each longitudinal channel or groove, thereby separating and shielding each pair of insulated conductors and, hence, isolating or at least substantially reducing crosstalk between pairs of insulated conductors contained within the cable. The invention also provides methods for making a multifolded composite tape. The invention further provides a communications cable comprising a multifolded composite tape to separate and shield insulated conductors.
摘要:
A telecommunications cable having a cable jacket defining an elongate cable core, a conductor assembly comprising four twisted pairs of conductors disposed along the core and parallel elongate distensions formed on an inner surface of the cable jacket. The distensions are spaced about an inner surface of the cable jacket and prevent the conductor assembly from coming into contact with the inner surface. The distensions can be the result of a series of filler elements placed between the cable jacket and the cable core and which wind helicoidally along and about the cable core. A separator spline has first and second elongate dividing strips having a substantially H shaped cross section and arranged side by side. The spline twists helicoidally along its length. The separator spline and the insulation surrounding the twisted pairs of conductors can be manufactured form a material having the same dielectric constant.
摘要:
The present invention is for a high performance data cable which has an interior support or star separator. The star separator or interior support extends along the longitudinal length of the data cable. The star separator or interior support has a central region. A plurality of prongs or splines extend outward from the central region along the length of the central region. Each prong or spline is adjacent with at least two other prongs or splines. The prongs or splines may be helixed or S-Z shaped as they extend along the length of the star separator or interior support. Each pair of adjacent prongs or splines defines grooves which extend along the longitudinal length of the interior support. At least two of the grooves have disposed therein an insulated conductor. The star separator in particular improves control of near end cross-talk and allows for the achievement of positive ACR ratios when twisted pair conductors are disposed in the grooves. The interior support can have a first material and a different second material. The different second material forms an outer surface of the interior support.
摘要:
Cables including a plurality of twisted pairs of insulated conductors and a jacket surrounding the plurality of twisted pairs of insulated conductors, the jacket including a plurality of protrusions extending away from an inner circumferential surface of the jacket toward a center of the cable. The plurality of protrusions are configured so as to hold the plurality of twisted pairs away from the inner circumferential surface of the jacket, and may provide an air gap between the plurality of twisted pairs of insulated conductors and the inner circumferential surface of the jacket, thereby reducing susceptibility of the plurality of twisted pairs to alien near end crosstalk.
摘要:
A telecommunications cable and separator spline. In one example the cable includes a cable jacket defining an elongate cable core, a conductor assembly including four twisted pairs of conductors disposed along the core and a plurality of parallel elongate localized and like distensions in an inner surface of the cable jacket. The distensions are substantially evenly spaced about an inner surface of the cable jacket and prevent the conductor assembly from coming into contact with the inner surface. In one example, the distensions are the result of a series of filler elements placed between the cable jacket and the cable core and which wind helicoidally along and about the cable core. The separator spline is comprised of first and second elongate dividing strips having a substantially H shaped cross section and arranged side by side. The spline twists helicoidally along its length. In one example the separator spline and the insulation surrounding the twisted pairs of conductors is manufactured form a material having the same dielectric constant.
摘要:
A flat-type cable suitable for use in high frequency communications. The cable has a plurality of longitudinally extending and substantially parallel passageways, each housing a twisted pair conductor. The twisted pair conductors are disposed in the cable in a manner that the twisted pair conductors with the longest lay lengths are disposed in the passageways closest to the edges of the cable, and the passageways farther away from the edges of the cable house twisted pair conductors with progressively shorter lay lengths.
摘要:
A telecommunications cable and separator spline are disclosed. In one embodiment the cable comprises a cable jacket defining an elongate cable core, a conductor assembly comprising four twisted pairs of conductors disposed along the core and a plurality of parallel elongate localised and like distensions in an inner surface of the cable jacket. The distensions are substantially evenly spaced about an inner surface of the cable jacket and prevent the conductor assembly from coming into contact with the inner surface. In particular embodiment, the distensions are the result of a series of filler elements placed between the cable jacket and the cable core and which wind helicoidally along and about the cable core. The separator spline is comprised of first and second elongate dividing strips having a substantially H shaped cross section and arranged side by side. The spline twists helicoidally along its length. In particular embodiment the separator spline and the insulation surrounding the twisted pairs of conductors is manufactured form a material having the same dielectric constant.
摘要:
A flat-type cable suitable for use in high frequency communications. The cable has a plurality of longitudinally extending and substantially parallel passageways, each housing a twisted pair conductor. The twisted pair conductors are disposed in the cable in a manner that the twisted pair conductors with the longest lay lengths are disposed in the passageways closest to the edges of the cable, and the passageways farther away from the edges of the cable house twisted pair conductors with progressively shorter lay lengths.