EP3882931A1 - Câble - Google Patents

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Publication number
EP3882931A1
EP3882931A1 EP20163984.6A EP20163984A EP3882931A1 EP 3882931 A1 EP3882931 A1 EP 3882931A1 EP 20163984 A EP20163984 A EP 20163984A EP 3882931 A1 EP3882931 A1 EP 3882931A1
Authority
EP
European Patent Office
Prior art keywords
pair
shielding
lay length
cable
conductor bundle
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Withdrawn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
EP20163984.6A
Other languages
German (de)
English (en)
Inventor
Stefan Gianordoli
Marijan Rogic
Christoph GASSNER
Günther Asperger
Tobias Kupka
Thomas Hochleithner
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.)
Gebauer and Griller Kabelwerke GmbH
Original Assignee
Gebauer and Griller Kabelwerke 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 Gebauer and Griller Kabelwerke GmbH filed Critical Gebauer and Griller Kabelwerke GmbH
Priority to EP20163984.6A priority Critical patent/EP3882931A1/fr
Priority to DE212021000163.7U priority patent/DE212021000163U1/de
Priority to PCT/EP2021/056985 priority patent/WO2021185983A1/fr
Publication of EP3882931A1 publication Critical patent/EP3882931A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H01B11/1025—Screens specially adapted for reducing interference from external sources composed of a helicoidally wound tape-conductor
    • 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

Definitions

  • the invention relates to a cable, in particular a data cable for the transmission of data in telecommunications, message transmission or computer technology, in particular for the automotive industry, comprising at least one conductor bundle and a shield for shielding the conductor bundle and / or the wires of the conductor bundle.
  • the cables in question are usually made up of a large number of cores, each of which consists of a conductor (solid conductor wire or stranded wire) and insulation surrounding the conductor. These wires are combined in pairs to form wire pairs, which are each surrounded by a pair shield or pair shield. Depending on whether the wires of the individual wire pairs run parallel to one another or are twisted together, one speaks of "shielded parallel pair" or of "shielded twisted pair” cables.
  • the individual wire pairs can also be twisted with one another in order to form a stranding element.
  • twisting of the cores of a core pair and the twisting of the core pairs of a stranding element one speaks (instead of twisting) of stranding of the individual core pairs.
  • a conductor bundle of the cable can now be formed by one or more stranding elements, or also by one or more wire pairs that are not stranded with one another. In many cases, however, the conductor bundle is still surrounded by an overall shield and a cable sheath.
  • the twisting of the wires is intended to ensure better protection against electrical and magnetic interference fields as well as an extensive elimination of the influence of external fields
  • the stranding of the wire pairs leads in particular to the desired flexibility or stability of the respective cable.
  • the pair shielding should also minimize crosstalk between adjacent wire pairs and the overall shielding should ensure protection with regard to electromagnetic compatibility and electromagnetic interference.
  • EP 3 172 741 B1 propose to arrange a dielectric intermediate film between the pair of wires and the pair shield, the lay length of which is not constant over the entire length of a pair of wires, but preferably varies periodically over the length of the pair of wires. This is intended to reduce negative symmetry effects, which are ascribed to the pair shielding wound around the wire pair with a constant lay length, and to improve the transmission properties of the respective cable even at high transmission rates or frequencies.
  • Attenuation peaks in the insertion loss and / or the return loss should be avoided or displaced from the relevant frequency range.
  • the cables according to the invention should be suitable for use in vehicles or in the automobile industry.
  • a cable according to the invention in particular a data cable for the transmission of data in telecommunications, communications or computer technology, comprising at least one conductor bundle and a shield for shielding the conductor bundle and / or the wires of the conductor bundle, by the ratio of a lay length of the conductor bundle to a lay length of the shielding between 0.7 and 1.3.
  • lay length is usually understood, and also within the scope of the present invention, to mean the length of that section running in the longitudinal direction of the cable which requires a wire, a pair of wires or a shield for a complete 360 ° rotation.
  • lay length of a twisted pair of wires denotes the length that one wire of the wire pair needs for one complete turn in the wire pair
  • lay length of a stranding is the length that a wire pair needs for a complete turn in the stranding
  • the lay length of a shield is the length which requires a corresponding banding that forms the respective shielding for a complete rotation.
  • lay length is therefore synonymous in each context with a period of twisting a pair of wires, stranding individual pairs of wires with one another, or wrapping a band around a pair of wires (pair shielding) or around the entire conductor bundle (overall shielding).
  • a lay length of the conductor bundle is not less than half and not more than 1.5 times the lay length of the shielding.
  • This matching of the lay lengths to one another allows the transmission properties of the cable according to the invention to be optimized.
  • Use is made of the knowledge that both the periodic twisting or stranding of the conductor bundle and the periodic winding of the (pair or overall) shielding produce peaks in the insertion loss curve. Due to the inventive coordination of the lay lengths, attenuation peaks in the insertion loss, which attenuation peaks are due to the regular arrangement of the shielding, coincide with those attenuation peaks which are due to the respective lay length of the twisting and / or stranding of the wire pairs.
  • the lay length of the twisting and / or stranding of the wire pairs is selected so that the corresponding main peak lies outside the relevant frequency range (by reducing the lay length, the main peak in the insertion loss shifts to higher frequencies), there is a noisy frequency range in the relevant frequency range. and peak-free transfer curve.
  • the ratio of the lay length of the conductor bundle to the lay length of the shield is preferably between 0.8 and 1.2; particularly preferably the ratio is essentially 1, so that the lay length of the conductor bundle corresponds to the lay length of the shielding or the two lay lengths are identical.
  • the lay length of the conductor bundle can relate to the period of twisting of the wires in a wire pair, or to the period of stranding individual wire pairs with one another in a stranding element.
  • the lay length of the shielding can refer either to the period of a pair of shielding, which pair of shielding surrounds a pair of wires for the purpose of shielding, or to the period of an overall shielding, which overall shielding surrounds the entire bundle of conductors.
  • the pair shielding and / or the overall shielding is preferably formed by banding or a film made of a plastic, for example made of a thermoplastic such as PETP.
  • lay lengths occurring in a cable according to the invention are particularly preferably identical.
  • lay length of all wire pairs stranded with one another can be identical and also be identical to the lay length of all pair shields and any overall shielding that may be present.
  • lay lengths with which the individual wire pairs are twisted with one another can be identical or different.
  • Cables according to the invention can be present, for example, as “shielded twisted pair” or as “shielded parallel pair” cables.
  • the cable is a "shielded twisted pair" cable with a twisted pair of wires, in particular with a wire cross-section of 0.14 or 0.22 mm 2 , and a pair of shielding surrounding the wire pair, the lay length of the wire pair and the lay length of the pair shield is in each case between 5 and 20 mm, but is preferably 9, 10, 11, 12, 13, 14, 15, 16, 17 or 18 mm.
  • wire cross-section denotes the cross-section of a conductor forming one wire of the wire pair, in particular a conductor cross-section.
  • a twisted pair of wires in particular with a wire cross-section of 0.13 mm 2 each, and an overall shielding surrounding the pair of wires are provided, the lay length of the wire pair and the lay length of the overall shield being between 5 and 15 mm, but preferably 9, 10 or 11 mm.
  • a particularly simple structure of the cable can thereby be ensured.
  • pair shielding can be omitted; alternatively, pair shielding can also be provided in addition to the overall shielding.
  • a stranding element with two twisted wire pairs, each surrounded by a pair of shielding, and one is the Overall shielding surrounding the stranding element is provided, the lay length of the stranding of the two wire pairs, the lay length of the pair screening and the lay length of the overall screen each being between 5 and 15 mm, but preferably 9, 10 or 11 mm.
  • lay length with which the wire pairs are twisted can also coincide with the lay lengths of the stranding, the pair shielding and the overall shielding.
  • further stranding elements can also be provided in one embodiment of the cable according to the invention.
  • a cable in particular a data cable for the transmission of data in telecommunications, message transmission or computer technology, comprising at least one conductor bundle and a shield for shielding the conductor bundle and / or the wires of the conductor bundle, wherein the cable is designed as a "shielded parallel pair" cable and a wire pair with two parallel wires, in particular with a wire cross-section between 0.02 to 0.35 mm 2 , particularly preferably 0.14 or 0.22 mm 2 each , and a pair of shielding surrounding the wire pair is provided.
  • lay length of the pair shield is between 3 and 7 mm, but preferably 5 mm, the transmission properties of a corresponding “shielded parallel pair” cable can be significantly improved.
  • a width of a foil forming the pair shielding is particularly preferably not equal to the lay length of the pair shielding, that is to say the length that is required for wrapping the wire pair with the pair shielding.
  • all wires of the conductor bundle have the same capacitance per unit length.
  • the attenuation properties of the cable according to the invention can be improved even further and additional peaks in the insertion loss can be avoided.
  • a preferably one-sided lamination of the shielding, that is to say the pair shielding and / or the overall shielding, with an aluminum or copper layer is also advantageous.
  • Fig. 1 shows a schematic sectional view of a cable according to the invention.
  • the cable has two wire pairs 5, each of which includes a first insulated wire 3, a second insulated wire 4 and a pair of shielding 6 surrounding the two wires 3, 4.
  • the wires 3, 4 of the wire pairs 5 are not routed in parallel in the cable, but are twisted in pairs to form a twist 8 (the circumference of the twisted wire pairs 5 is shown in FIG Fig. 1 indicated by the dashed lines provided with reference numeral 8; the direction in which the two wires 3, 4 are twisted with one another is indicated by the two arrows arranged within the twist 8).
  • the twisted wire pairs 5 are in turn twisted together in a similar manner in order to form a stranding 9 (the extent of the stranding is shown in FIG Fig. 1 indicated by the dashed line provided with reference numeral 9; the direction in which the wire pairs 5 are twisted with one another is indicated by the two arrows arranged outside the twist 8 but inside the stranding 9).
  • a stranding element For the semantic differentiation between the twisted wires 3, 4 and the wire pairs 5 twisted with one another, one also speaks of the stranding of the wire pairs 5 to form a stranding element.
  • a conductor bundle 1 of the cable thus comprises the wires 3, 4 twisted to form wire pairs 5 and the wire pairs 5 twisted to form the stranding element.
  • the conductor bundle 1 is surrounded by an overall shield 7.
  • lay lengths L1 and L2 are particularly preferably identical, however, as far as this is technically possible.
  • the lay length L1 of the conductor bundle 1 can either be the lay length of the cores 3, 4 ( Fig. 9 ), or the lay length of the stranding 9, i.e. the lay length under which the wire pairs 5 are twisted with one another.
  • the lay length L2 of the shield 2 is either the lay length with which the pair shield 6 is helically wound around the respective wire pair 5 ( Fig. 9 ), or by the length of the lay with which the overall shield 7 is wrapped around the conductor bundle 1 ( Fig. 7, 8 ).
  • these two lay lengths can also be chosen to be identical.
  • the cable can be surrounded by a cable sheath 10, for example made of PVC (polyvinyl chloride);
  • a braided shield 11 for example made of tinned copper wires, can be arranged between the cable sheath 10 and the overall shield 7.
  • Figs. 2 and 3 show other design variants of the cable according to the invention.
  • the conductor bundle 1 does not consist of several, but only one twisted pair of wires 5 with pair shielding 6.
  • Fig. 3 is the wire pair 5 surrounded only by an overall shield 7; a pair shield, as it is in Figs. 1 and 2 is shown, but is omitted.
  • the in Fig. 3 The cable shown has an inner sheath 12 which is arranged between the conductor bundle 1 and the overall shield 7.
  • Figures 4 and 5 illustrate the positive effects achieved by the cable according to the invention on the transmission properties of a cable.
  • the attenuation curve in this configuration shows a further, less pronounced peak at around 6600 MHz.
  • the cable is to be used for data transmission in the frequency range up to 9 GHz, such an attenuation curve is disadvantageous in terms of transmission performance.
  • Fig. 6 shows a first embodiment of a cable according to the invention.
  • the conductor bundle 1 of the cable comprises the first wire 3 and the second wire 4, which form the wire pair 5.
  • the two wires 3, 4 run parallel to one another, so that the embodiment shown is a “shielded parallel pair” cable.
  • the one in the Figures 6, 7 and 8 However, the cable structure shown can also be used with "shielded twisted pair" cables.
  • the wire pair 5 is surrounded by the pair shield 6, which forms a shield 2 for shielding the first wire 3 and the second wire 4.
  • the pair shield 6 follows an insulation of the first wire 3 or the second wire 4; however, it is also possible for further layers to be arranged between the insulation and pair shielding.
  • the pair shield 6 is in turn followed by the braided shield 11, which consists, for example, of tinned copper wires. Finally, the cable is closed to the outside by a cable sheath 10.
  • Both the wire pair 5 and the pair shielding 6 can have a lay length: In the case of a "shielded twisted pair" cable, the two wires 3, 4 of the wire pair 5 are twisted together; that length which is required for a twist by 360 ° is then the lay length of the wire pair 5.
  • the pair shielding 6 can be wound helically around the conductor bundle 1; the length that is required for a wrap around 360 ° forms the lay length of the pair shielding 6.
  • this lay length can also be specified by the pitch L3 under which the pair shield 6 is wrapped around the conductor bundle 1 ( Fig. 9 ).
  • the illustrated second embodiment of the cable according to the invention differs from that in Fig. 6 embodiment shown by an inner jacket 12, which surrounds the pair of wires 5; the inner jacket 12 can be made of plastic, preferably PP (polypropylene). Pair shielding as described in Fig. 6 shown, are omitted and only an overall shield 7 is provided, which does not directly surround the pair of wires 5 but is arranged between the inner sheath 12 and the outer cable sheath 10. Similar to the pair shield 6, the overall shield 7 can also be wrapped around the inner jacket 12 with a specific lay length.
  • FIG. 8 a third exemplary embodiment of the cable according to the invention, the conductor bundle 1 of which has two wire pairs 5, each of which comprises either two individual wires 3, 4 arranged in parallel or twisted together.
  • Each pair of wires 5 is wrapped with an associated pair of shielding 6; the two wire pairs 5 themselves are in turn wrapped with an overall shield 7.
  • the lay lengths of the pair shields 6 can be different or, as far as technically possible and sensible, identical.
  • the lay length of the overall shield 7 can coincide with or differ from a lay length of a pair of shielding 6. Both the pair shields 6 and the overall shield 7 are surrounded by an associated braided shield 11.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
EP20163984.6A 2020-03-18 2020-03-18 Câble Withdrawn EP3882931A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20163984.6A EP3882931A1 (fr) 2020-03-18 2020-03-18 Câble
DE212021000163.7U DE212021000163U1 (de) 2020-03-18 2021-03-18 Kabel
PCT/EP2021/056985 WO2021185983A1 (fr) 2020-03-18 2021-03-18 Câble

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20163984.6A EP3882931A1 (fr) 2020-03-18 2020-03-18 Câble

Publications (1)

Publication Number Publication Date
EP3882931A1 true EP3882931A1 (fr) 2021-09-22

Family

ID=69845978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20163984.6A Withdrawn EP3882931A1 (fr) 2020-03-18 2020-03-18 Câble

Country Status (3)

Country Link
EP (1) EP3882931A1 (fr)
DE (1) DE212021000163U1 (fr)
WO (1) WO2021185983A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4297048A1 (fr) * 2022-06-20 2023-12-27 Yazaki Corporation Câble duplex torsadé blindé, et faisceau de câbles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01209604A (ja) * 1988-02-16 1989-08-23 Hirakawa Densen Kk シールド電線およびその製造方法
WO2000079545A1 (fr) * 1999-06-18 2000-12-28 Belden Wire & Cable Company Cable de donnees haute performance
EP2498333A1 (fr) * 2011-03-09 2012-09-12 Telefonaktiebolaget L M Ericsson AB (Publ) Câble double blindé et procédé de production de ce câble
US20140182881A1 (en) * 2012-12-28 2014-07-03 Hitachi Cable, Ltd Shielded cable
US20180075948A1 (en) * 2016-09-15 2018-03-15 Sumitomo Electric Industries, Ltd. Parallel pair cable
EP3172741B1 (fr) 2014-07-25 2018-09-12 LEONI Kabel GmbH Câble de données pour transmissions de données à haut débit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01209604A (ja) * 1988-02-16 1989-08-23 Hirakawa Densen Kk シールド電線およびその製造方法
WO2000079545A1 (fr) * 1999-06-18 2000-12-28 Belden Wire & Cable Company Cable de donnees haute performance
EP2498333A1 (fr) * 2011-03-09 2012-09-12 Telefonaktiebolaget L M Ericsson AB (Publ) Câble double blindé et procédé de production de ce câble
US20140182881A1 (en) * 2012-12-28 2014-07-03 Hitachi Cable, Ltd Shielded cable
EP3172741B1 (fr) 2014-07-25 2018-09-12 LEONI Kabel GmbH Câble de données pour transmissions de données à haut débit
US20180075948A1 (en) * 2016-09-15 2018-03-15 Sumitomo Electric Industries, Ltd. Parallel pair cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4297048A1 (fr) * 2022-06-20 2023-12-27 Yazaki Corporation Câble duplex torsadé blindé, et faisceau de câbles

Also Published As

Publication number Publication date
DE212021000163U1 (de) 2022-01-14
WO2021185983A1 (fr) 2021-09-23

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