EP1028435A2 - Câble de données - Google Patents

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Publication number
EP1028435A2
EP1028435A2 EP00102841A EP00102841A EP1028435A2 EP 1028435 A2 EP1028435 A2 EP 1028435A2 EP 00102841 A EP00102841 A EP 00102841A EP 00102841 A EP00102841 A EP 00102841A EP 1028435 A2 EP1028435 A2 EP 1028435A2
Authority
EP
European Patent Office
Prior art keywords
data cable
shield
cable
cable according
common
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Withdrawn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
EP00102841A
Other languages
German (de)
English (en)
Other versions
EP1028435A3 (fr
Inventor
Jörg Bör
Thomas Delzepich
Stephan Gorgeis
Karl Lesten
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.)
Kerpenwerk & Co GmbH
Original Assignee
Kerpenwerk & Co 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 Kerpenwerk & Co GmbH filed Critical Kerpenwerk & Co GmbH
Publication of EP1028435A2 publication Critical patent/EP1028435A2/fr
Publication of EP1028435A3 publication Critical patent/EP1028435A3/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Withdrawn legal-status Critical Current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
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources

Definitions

  • the transmission channels over which this data is transported have to meet certain minimum requirements in order to achieve the to support the respective transmission process and thus a trouble-free To enable data transmission.
  • symmetrical data cable with twisted pair or four stranded wires consist of polymer-insulated copper wires.
  • the cables are permanently installed in a building and therefore not easily interchangeable. That means that today already laid cables to meet the requirements of the next generation of active components and transmission methods are sufficient have to.
  • the characteristic impedance is initially a system parameter.
  • In such an ideally adapted transmission system would be a data transmission that is not subject to losses due to reflection possible.
  • the reflection loss is defined as a measure of the freedom from reflection. This quantity indicates the ratio of transmitted signal power reflected signal power and thus describes the uniformity a transmission channel with respect to the wave resistance determining sizes.
  • the attenuation describes the ratio of received Signal power to signal power sent in the transmission link losses incurred. For a given wave resistance the attenuation essentially from the cross section of the copper conductor dependent and can only be slightly through further design measures to be changed.
  • the crosstalk describes data cables that have multiple transmission channels involve the electromagnetic interaction between the individual transmission channels. This interaction means that the signal transmitted in a channel is a disturbance in another channel is received. To this electromagnetic Reducing interaction is a high electrical and geometric Symmetry of the individual stranding elements required. On large distance between the individual stranding elements also contributes to a good crosstalk.
  • Symmetrical data cables consist of pairs or pairs Four stranded veins. Each wire is one with an extruded one Copper wire surrounded by polymer material.
  • Electromagnetic decoupling causes the twist lengths of the individual elements can be chosen differently. By a appropriate matching of the ratios of the twist lengths of the different This can be done by twisting elements of a data cable Decoupling and thus crosstalk can be optimized.
  • the preferred four-pair data cables are six Optimize pair combinations. That means the four Twist lengths determined taking into account the manufacturing accuracy must be that all six ratios are optimal.
  • a very effective measure to improve crosstalk is to electromagnetic the individual stranding elements against each other shield it by placing it with electrically conductive Surrounds materials (see Utility Model No. 295 18 525.2; Kerpen).
  • the shielding of the individual pairs is both from the use of materials and significantly more complex in terms of production costs.
  • Data cables with individually shielded stranding elements are considerable thicker and significantly more expensive than cables with only one joint Umbrella. In addition, such data cables exceed transmission requirements often so far that this Effort doesn't seem justified.
  • the invention is based on the object of a data cable To provide, which the existing Requirements are sufficient.
  • the invention proposes a data cable, which by two stranded cable elements are marked, each consist of a twisted pair of cables and the one common shield are surrounded.
  • the shield can comprise a metal-coated polymer film, be extruded from conductive material and / or an electrolytic have applied metal layer.
  • Cable elements Due to the shielding of the two stranded together Cable elements can easily shield several such Cable element pairs arranged under a common outer jacket become. This way you can easily connect with more data cables are provided as four cables that are relatively inexpensive meet modern requirements.
  • the common outer jacket preferably has a flame-retardant, halogen-free polymer blend on, making the cable most modern Requirements are sufficient.
  • cable element pairs shielded in this way can be connected in parallel be arranged to each other, so that such a data cable with relatively small bending radii can be laid.
  • This common cable shield can be a metal-coated polymer film or a braid made of metal wires, preferably tinned Copper wires.
  • a preferred embodiment which is shown in the figure, are two pairs of cable elements according to the invention next to each other a common screen 5, which in this embodiment a braid made of metal wires and which one common outer jacket 6 is encased.
  • the through the parallel Arrangement-related oval shape of the data cable offers advantages when laying, since the permissible bending radius is according to the flat Page is calculated and thus significantly lower than comparable, four-wire data cables in conventional round design.
  • each cable element pair consists from two stranded cable elements 3, through a single shield 4, which in the present embodiment consists of polyester film coated with aluminum are.
  • Each of the stranded cable elements 3 consists of two Individual cables, each in the present embodiment a bare copper cable 1, which is foamed from an insulation 2 Polyurethane is surrounded, are formed.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
EP00102841A 1999-02-13 2000-02-11 Câble de données Withdrawn EP1028435A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905930 1999-02-13
DE1999105930 DE19905930A1 (de) 1999-02-13 1999-02-13 Datenkabel

Publications (2)

Publication Number Publication Date
EP1028435A2 true EP1028435A2 (fr) 2000-08-16
EP1028435A3 EP1028435A3 (fr) 2001-02-07

Family

ID=7897327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102841A Withdrawn EP1028435A3 (fr) 1999-02-13 2000-02-11 Câble de données

Country Status (2)

Country Link
EP (1) EP1028435A3 (fr)
DE (1) DE19905930A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194539A3 (fr) * 2008-12-08 2014-01-08 Zellner GmbH Câble de données pouvant être confectionné

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637117A1 (fr) * 1988-09-27 1990-03-30 Acome Soc Coop Travailleurs Cable de teledistribution pour la transmission de signaux de television
DE19531065A1 (de) * 1995-08-23 1997-02-27 Siemens Ag Nachrichtenkabel mit mindestens einem elektrischen Übertragungselement sowie Verfahren zur Herstellung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29521155U1 (de) * 1995-07-28 1996-12-05 Daetwyler Ag Doppelleitungs-Wellenleiter, Kabel mit solchen Doppelleitungs-Wellenleitern
DE29521360U1 (de) * 1995-10-31 1997-05-15 Daetwyler Ag Universalverkabelung und Kabel hierfür

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637117A1 (fr) * 1988-09-27 1990-03-30 Acome Soc Coop Travailleurs Cable de teledistribution pour la transmission de signaux de television
DE19531065A1 (de) * 1995-08-23 1997-02-27 Siemens Ag Nachrichtenkabel mit mindestens einem elektrischen Übertragungselement sowie Verfahren zur Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2194539A3 (fr) * 2008-12-08 2014-01-08 Zellner GmbH Câble de données pouvant être confectionné

Also Published As

Publication number Publication date
DE19905930A1 (de) 2000-08-17
EP1028435A3 (fr) 2001-02-07

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