EP1091362A2 - Câble de transmission de données et méthode de fabrication - Google Patents

Câble de transmission de données et méthode de fabrication Download PDF

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Publication number
EP1091362A2
EP1091362A2 EP00121406A EP00121406A EP1091362A2 EP 1091362 A2 EP1091362 A2 EP 1091362A2 EP 00121406 A EP00121406 A EP 00121406A EP 00121406 A EP00121406 A EP 00121406A EP 1091362 A2 EP1091362 A2 EP 1091362A2
Authority
EP
European Patent Office
Prior art keywords
data transmission
transmission cable
wires
pair
conductors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00121406A
Other languages
German (de)
English (en)
Other versions
EP1091362A3 (fr
Inventor
Hans-Georg Huck
Andreas Wilhelm
Erwin Köppendörfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leoni Kabel GmbH
Original Assignee
Leoni Kabel GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leoni Kabel GmbH filed Critical Leoni Kabel GmbH
Publication of EP1091362A2 publication Critical patent/EP1091362A2/fr
Publication of EP1091362A3 publication Critical patent/EP1091362A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/002—Pair constructions

Definitions

  • the invention relates to a data transmission cable with at least one pair of conductors and a method for producing such a data transmission cable.
  • Such a data transmission cable is for example from US 4,873,393 known.
  • Several wire pairs are arranged within an outer cable jacket, which are formed from two single wires stranded together.
  • data transmission cables are capacity asymmetries distributed over the cable length of the wire pairs is problematic because these impedance fluctuations and Signal energy losses and crosstalk effects and thus cause Transmission properties of the data transmission cable, especially in the required by the relevant standards ISO / IEC 1181 (2nd edition) and pr EN 50288 high frequencies of up to 600 MHz, deteriorate.
  • the causes of the capacity asymmetries are fluctuating distances between the conductors of a pair of wires and in particular changing diameters of the wire sheaths. Therefore, in the manufacture of data transmission cables elaborate production monitoring and quality control required.
  • Conventional data transmission cables are first made through single wires Extrusion manufactured. To do this, an electrical conductor is passed through a circular extrusion nozzle an extruder and with an insulation material encased in a thermoplastic. Despite monitoring the Extrusion parameters, in particular the temperature, the extrusion pressure and the extrusion speed, fluctuations in the wire diameter can be observed and the material consistency of the wrapping material is practically incomplete avoid.
  • the invention has for its object to provide a data transmission cable without the ISO / IEC 1181 (2nd edition) and pr EN 50288 standards leave the specified tolerance ranges in a particularly simple manner can be produced.
  • a data transmission cable according to the invention contains at least one pair of wires, the one-piece interconnected by a common extrusion has claddings applied to a pair of conductors.
  • This approach has first the advantage that the distance between the conductors of a pair is exact can be met. It is also advantageous that fluctuations in the Always affect extrusion parameters simultaneously on both wires of a wire pair. Inhomogeneities in material consistency as well as diameter fluctuations are therefore symmetrical.
  • the proposed one Data transmission cables are lower than conventional cables Impedance fluctuations and less crosstalk effects.
  • the data transmission cable according to the invention for transmission frequencies up suitable at least 2000 MHz.
  • the data transmission cable according to the invention easier, namely with comparatively little effort producible for quality monitoring.
  • the shape of the extrusion die is chosen so that the cylindrical envelopes touch in a line.
  • the two envelopes are thus in one piece with one another connected and the mutual distance between the electrical conductors is exact fixed and practically unchangeable.
  • the sheaths are a pair of wires connected to each other via a bridge.
  • a pair of wires can be opened simply disconnect, for example to fix the single wires to connectors.
  • the plastics polypropylene, polyethylene and copolymers from hexafluoropropylene and proven tetrafluoroethylene.
  • a connector at one end of the cable with contact elements for fixing the electrical conductors of a pair of wires arranged.
  • the grid dimension of the contact elements corresponds to that Distance of the electrical conductors in the wire pair, so that a separation of the wire pairs can be omitted.
  • the geometry of the wire pair remains up to the Receive transfer points so that transmission losses due to reflection are minimized are.
  • Figures 1 to 7 show data transmission cables in cross-sectional representation. All Data transmission cables contain at least one consisting of two wires Pair of wires 1.
  • a wire comprises an electrical conductor 2, preferably made of Copper, optionally coated with tin or silver, and a coating 3 from an insulation material, e.g. B. made of polyethylene.
  • the casing 3 can also be built up in multiple layers (e.g. skin-foam-skin).
  • the conductor 2 can be a wire or a strand.
  • the two envelopes 3 are in one piece by a common extrusion process formed and connected to each other via a web 4.
  • the web 4 extends extends over the entire length of the veins and runs in the transverse direction of the Wire pair 1, based on the imaginary connecting line between the center points the leader 2.
  • the individual wires are stranded together, therefore have a twist.
  • the wire pairs can also be used without twist be formed, in which case two pairs of wires 1 lie parallel to each other.
  • FIGS. 1 to 5 contain two wire pairs 1, while the remaining data transmission cables each contain four wire pairs.
  • One with the Exemplary embodiments according to FIGS. 1 to 5 provided overall shielding can, for example, from a metal foil 6a or through a screen braid 6b.
  • Such a screen braid 6b improves the one mechanical cohesion of the wire pairs comprised by this and improved also the electromagnetic compatibility (EMC) of the shield.
  • EMC electromagnetic compatibility
  • the shielding from a metal foil 6a and from one Shield braid 6b is formed (Fig. 4).
  • the shielded or unshielded package of several pairs of wires 1 is finally by a cable sheath 7, for example made of PVC. If necessary an FRNC material (flame retardant, Non-Corrosive) or LSZH material (Low Smoke, Zero Halogen) can be used. In the embodiment of FIG. 3, two cables are on one of them Cable sheath 7a connecting web 8 held together. Within a drain wire 9 is arranged on the overall shield 6b.
  • FRNC material flame retardant, Non-Corrosive
  • LSZH material Low Smoke, Zero Halogen
  • the measured values shown graphically in FIGS. 8 and 9 were also measured on wire pairs 1 a width of 4.2 mm and a height of 2.0 mm and a web width of Get 0.2 mm.
  • the diameter of the conductor 2 was 0.64 mm.
  • As material for the envelopes 3 were made of solid PE.
  • As a shield 5 for the Wire pairs 1 became an aluminum-laminated film strip with the dimensions 20mm x 0.065mm inserted.
  • the values for the attenuation measured on the cable described above are represented by the measurement curve F. These values are up to that of the standard prescribed maximum frequency of 600 MHz in the permissible range.
  • the diagram is still the signal-to-noise ratio, i.e. the difference between the dB value of the useful signal (curve E or F) and the dB value of the interference signal (curve D or C).
  • a signal-to-noise ratio of 10 dB is permissible, while in the examined Data transmission cable there is a signal-to-noise ratio of about 50 dB.
  • a Frequency of 1600 MHz (dashed vertical line in Fig. 9) is still a signal-to-noise ratio of about 20 dB.
  • Fig. 10 shows a preferred connector 10 of the pair of wires 1 with opposite Fixing elements 11, 12 for fixing and contacting the conductor 2 of the wire pair 1.
  • the fixing elements 11, 12 are each in a half-shell 10a or 10b of the connector 10 is provided and there at the apex of at least approximately receiving recesses adapted to the outer contour of the pair of wires 1 13 arranged.
  • This connector 10 causes interference in the transmission properties of the pair of wires and thus the data transmission cable avoided by the geometry specified by the wire pair 1 in the connector 10 remains the same is continued.
  • the contact and fixing elements 11, 12 designed as insulation displacement contacts are narrower at their contact tips than the diameter of the copper conductor 2 within the respective wire of the wire pair 1 and thus do not protrude over the conductor 2 into the dielectric, that is to say into the casing 3. This ensures a constant distance between the two conductors 2 within the connector 10. It is essential that the contact elements 11 in the upper half-shell 10a and the contact elements 12 in the lower Half-shell 10b of the connector 10 at the same distance from each other are like the two conductors 2 of the wire pair 1.

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  • Communication Cables (AREA)
EP00121406A 1999-10-04 2000-09-29 Câble de transmission de données et méthode de fabrication Withdrawn EP1091362A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948678 1999-10-04
DE1999148678 DE19948678A1 (de) 1999-10-04 1999-10-04 Datenübertragungskabel und Herstellungsverfahren

Publications (2)

Publication Number Publication Date
EP1091362A2 true EP1091362A2 (fr) 2001-04-11
EP1091362A3 EP1091362A3 (fr) 2002-01-02

Family

ID=7925060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121406A Withdrawn EP1091362A3 (fr) 1999-10-04 2000-09-29 Câble de transmission de données et méthode de fabrication

Country Status (2)

Country Link
EP (1) EP1091362A3 (fr)
DE (1) DE19948678A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619695A2 (fr) * 2004-07-22 2006-01-25 LG Cable Ltd. Ensemble de câbles avec moyens pour la prévention de la diaphonie

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20122505U1 (de) * 2001-03-13 2005-12-22 Ccs Technology Inc., Wilmington Elektrisches Datenkabel
DE102008019968A1 (de) 2008-04-21 2009-10-22 Leoni Kabel Holding Gmbh Datenübertragungskabel sowie Verfahren zur Herstellung eines Datenübertragungskabels
DE102014223119B4 (de) 2014-11-12 2021-01-28 Leoni Kabel Gmbh Datenkabel sowie Verfahren zur Herstellung eines Datenkabels
DE102015221906A1 (de) * 2015-11-06 2017-05-11 Leoni Kabel Holding Gmbh Datenkabel sowie Verwendung des Datenkabels in einem Kraftfahrzeug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383736A (en) * 1965-08-19 1968-05-21 Whitney Blake Co Communication wire extrusion apparatus
WO1996034400A1 (fr) * 1995-04-26 1996-10-31 Tensolite Company Ligne de transmission a faible obliquite
DE19531065A1 (de) * 1995-08-23 1997-02-27 Siemens Ag Nachrichtenkabel mit mindestens einem elektrischen Übertragungselement sowie Verfahren zur Herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1012097A (en) * 1963-01-10 1965-12-08 Standard Telephones Cables Ltd Multiconductor plastic insulated telephone cables
US4873393A (en) * 1988-03-21 1989-10-10 American Telephone And Telegraph Company, At&T Bell Laboratories Local area network cabling arrangement
US5606151A (en) * 1993-03-17 1997-02-25 Belden Wire & Cable Company Twisted parallel cable
WO1996041351A1 (fr) * 1995-06-07 1996-12-19 Tensolite Company Ligne de transmission a faible biais temporel pourvue d'un isolant thermoplastique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383736A (en) * 1965-08-19 1968-05-21 Whitney Blake Co Communication wire extrusion apparatus
WO1996034400A1 (fr) * 1995-04-26 1996-10-31 Tensolite Company Ligne de transmission a faible obliquite
DE19531065A1 (de) * 1995-08-23 1997-02-27 Siemens Ag Nachrichtenkabel mit mindestens einem elektrischen Übertragungselement sowie Verfahren zur Herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1619695A2 (fr) * 2004-07-22 2006-01-25 LG Cable Ltd. Ensemble de câbles avec moyens pour la prévention de la diaphonie
EP1619695A3 (fr) * 2004-07-22 2009-04-08 LS Cable Ltd. Ensemble de câbles avec moyens pour la prévention de la diaphonie

Also Published As

Publication number Publication date
EP1091362A3 (fr) 2002-01-02
DE19948678A1 (de) 2001-05-03

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