EP0871182B1 - Signalübertragungsflachkabel mit hoher Datenrate - Google Patents

Signalübertragungsflachkabel mit hoher Datenrate Download PDF

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Publication number
EP0871182B1
EP0871182B1 EP98400863A EP98400863A EP0871182B1 EP 0871182 B1 EP0871182 B1 EP 0871182B1 EP 98400863 A EP98400863 A EP 98400863A EP 98400863 A EP98400863 A EP 98400863A EP 0871182 B1 EP0871182 B1 EP 0871182B1
Authority
EP
European Patent Office
Prior art keywords
conductive
conductors
pair
cable
conductor
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.)
Expired - Lifetime
Application number
EP98400863A
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English (en)
French (fr)
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EP0871182A1 (de
Inventor
Daniel Prudhon
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.)
Nexans SA
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Nexans SA
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Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Publication of EP0871182A1 publication Critical patent/EP0871182A1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0823—Parallel wires, incorporated in a flat insulating profile

Definitions

  • the present invention relates to a flat cable of high-speed signal transmission comprising at least one pair of conductive wires.
  • a ribbon cable in which the positioning of the conductive wires relative to the others may be better.
  • a profile is made with ribs which delimit grooves.
  • the surface of grooves and profiles is coated with a member ground conductor, and insulated conductors are housed in the gorges due to a common thread throat.
  • the grooves are then closed, preferably by a additional conductive member. So each wire conductor can be considered as screened separately.
  • the invention aims to allow the use of flat cables for the realization of local networks having great lengths, of the order of 100 m, with flow rates high, at frequencies up to 100 MHz.
  • the invention implements means which reduce the capacitive effects of shielded flat cables, on the one hand, by twisting each solid conductor and, on the other hand, by association of the conductors of each pair so let them be closer to each other than sons conductors of other pairs.
  • the capacitive effects presented by each conductor with respect to the ground plane are compensated by using twisted conductors each on himself. Then the cross-talk effects between conductors of different pairs are reduced by more great closeness of conductors of the same pair as conductors belonging to different pairs.
  • the subject of the invention is a flat cable of high speed signal transmission comprising at least a pair of conductor wires each having a conductor and an insulator, a profile having at least one delimited groove by ribs, and a mass conducting member placed at the less on the surface of each groove, characterized in that it has two individually twisted conductors, each one on itself with a step much less than the length wave corresponding to the frequency of the signals to transmit, and thus kept juxtaposed in the same throat.
  • the pitch of twist varies from one conductor to another by the same pair and / or along the length of each thread, but it is always between 10 and 50 mm.
  • the conductive member of mass is a metallic ribbon surrounding each pair.
  • the mass conducting member is a coating on the surface of grooves and ribs, for example formed by electroplating.
  • the cable is such that the spacing of the two conductors of the same pair is significantly less than half the wire spacing conductors of different pairs.
  • the average distance between a conductor and a ground plane can be constant over the entire length of the common thread, and the capacities formed by each conductor with the ground plane have the same value, if although the capacitive crosstalk phenomena are deleted or at least significantly reduced.
  • the torsional pitch must be much lower at the wavelength at the frequencies used.
  • a twisting pitch of less than 50 mm for the transmission of signals whose frequency reaches 100 MHz, a twisting pitch of less than 50 mm.
  • the driver has been twisted.
  • this twist is introduced at the time where the conductor is made.
  • the twist is given to the conductive wire, already having the insulation, for example at the entrance to a wire laying machine conductors in a cable profile according to the invention.
  • the conductor is preferably made of copper, having preferably 0.5 to 0.65 mm in diameter, and the wire conductor, including insulation, has a diameter of 1.2 to 2 mm, the insulation being made for example of polyethylene solid or cellular or any other material having a low dielectric constant (less than 3.5) and an angle loss less than 0.01 to 100 MHz.
  • Figure 1 shows a profile 10, for example formed from extruded polyvinyl chloride, which defines ribs 12 between which grooves are formed 14 intended to each house two conducting wires.
  • the profile has four grooves intended to accommodate four pairs of wires.
  • it can include any number of grooves, and therefore pairs, a cable for local network can include two for example.
  • the grooves 14 include a conductive coating 16 which can be formed an added aluminum sheet, or a metallization performed for example by electroplating with ink conductive or by vacuum metallization.
  • Leaf metallic or metallized polyester 18 is placed on the conducting wires 20 so that these are shielded.
  • a sheath 22 surrounds the profile and the conducting wires. The total thickness of the cable is 2 to 3 mm in the example considered.
  • the two conducting wires of each pair are grouped in a single groove.
  • the throat width is such that the two threads of the pair are tight against each other.
  • the conductors are individually twisted on themselves at a short twist, which varies from one of conductors to each other of the same pair and / or on their length. In this way, at each location of the cable length, the two conductors of each pair have a different step. Two conductors of the same pair are thus juxtaposed in the same groove, to give a better symmetry along their length and thus avoid crosstalk problems created by imbalances in the Earth.
  • each pair of lead wires could be coated with conductive tape 24, for example polyester metallized with aluminum, forming a conductive member mass, so that aluminum foil or metallization 16 on the one hand, and the metallic or polyester sheet metallized 18 on the other hand, which are represented in Figure 2 is no longer required.
  • the flat cables according to the invention have the advantage, given by all the flat cables, of being able to be connected by a connection with insulation displacement contacts which requires only a very short time to connect the various connected devices and accessories. Furthermore, when the cable has the arrangement shown in FIG. 1, that is to say when the two conductors of a pair are closer than those of adjacent pairs, the insulation displacement contacts intended to come and cooperate with two conductors of a pair are closer than contacts which cooperate with the conductors of pairs adjacent. In this way, the crosstalk phenomena at level of connectivity can be further reduced.
  • the flat cable according to the invention when it has the features listed above, can be used for the installation of local networks conforming to specifications of class D networks according to standards ISO / IEC 11801 and EN 50173, i.e. usable on distances of the order of 100 m at frequencies of 100 MHz.
  • the twist pitch of each conductor on itself is then between 10 and 50 mm.

Landscapes

  • Communication Cables (AREA)
  • Insulated Conductors (AREA)

Claims (6)

  1. Signalübertragungsflachkabel mit hoher Datenrate, das wenigstens ein Paar Leitungsdrähte (20) mit jeweils einem Leiter und einem Isolator, ein Profilteil (10) mit wenigstens einer durch Rippen (12) begrenzten Rille (14) und ein Masseleitungsorgan (16) umfasst, das wenigstens an der Oberfläche jeder Rille angeordnet ist, dadurch gekennzeichnet, dass es zwei einzeln verdrillte Leitungsdrähte (20) aufweist, die jeder auf sich selbst mit einem Schritt, der sehr viel kleiner als die Wellenlänge ist, die der Frequenz der zu übertragenden Signale entspricht, und folglich in derselben Rille (14) nebeneinandergelegt gehalten werden.
  2. Kabel nach Anspruch 1, das für die Übertragung von Signalen vorgesehen ist, deren Frequenz in der Größenordnung von 100 MHz oder weniger liegt, dadurch gekennzeichnet, dass die Dralllänge jedes Leitungsdrahtes zwischen 10 und 50 mm liegt.
  3. Kabel nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Dralllänge von einem der Leitungsdrähte zum anderen desselben Paares und/oder über die Länge jedes Leitungsdrahtes variiert, wobei sie immer zwischen 10 und 50 mm liegt.
  4. Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Masseleitungsorgan (24) ein metallisierter Streifen ist, der jedes Paar umgibt.
  5. Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Masseleitungsorgan (16) ein Überzug der Oberfläche der Rillen und der Rippen ist.
  6. Kabel nach einem der Ansprüche 1 bis 5, das wenigstens zwei Paare von Leitungsdrähten umfasst, dadurch gekennzeichnet, dass der Abstand der beiden Leitungsdrähte desselben Paares im Wesentlichen kleiner als die Hälfte des Abstandes der Leitungsdrähte von verschiedenen Paaren ist.
EP98400863A 1997-04-10 1998-04-09 Signalübertragungsflachkabel mit hoher Datenrate Expired - Lifetime EP0871182B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704403A FR2762133B1 (fr) 1997-04-10 1997-04-10 Fil conducteur, cable le contenant, et appareil pour sa fabrication
FR9704403 1997-04-10

Publications (2)

Publication Number Publication Date
EP0871182A1 EP0871182A1 (de) 1998-10-14
EP0871182B1 true EP0871182B1 (de) 2001-10-04

Family

ID=9505736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400863A Expired - Lifetime EP0871182B1 (de) 1997-04-10 1998-04-09 Signalübertragungsflachkabel mit hoher Datenrate

Country Status (5)

Country Link
US (1) US6043434A (de)
EP (1) EP0871182B1 (de)
DE (1) DE69801857T2 (de)
DK (1) DK0871182T3 (de)
FR (1) FR2762133B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357271B3 (de) * 2003-12-05 2005-02-03 W.E.T. Automotive Systems Ag Elektrische Schaltleiste

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6255593B1 (en) * 1998-09-29 2001-07-03 Nordx/Cdt, Inc. Method and apparatus for adjusting the coupling reactances between twisted pairs for achieving a desired level of crosstalk
JP3952438B2 (ja) * 2001-01-17 2007-08-01 矢崎総業株式会社 電磁波シールド処理構造
DE10260242A1 (de) * 2002-12-20 2004-07-22 Siemens Ag Schaltungsmodul für Kraftfahrzeuge
US20040188130A1 (en) * 2003-03-28 2004-09-30 Humberto Herrera Method and apparatus for dressing substantially parallel cables
EP2443633B1 (de) 2009-06-19 2017-09-13 3M Innovative Properties Company Abgeschirmtes elektrisches kabel
US9685259B2 (en) 2009-06-19 2017-06-20 3M Innovative Properties Company Shielded electrical cable
CN103415317B (zh) * 2011-02-17 2016-04-13 先进仿生学股份公司 线构造
CN102623092B (zh) * 2012-04-12 2013-06-05 江苏亨通线缆科技有限公司 扁平型抗干扰数据电缆
WO2014074269A1 (en) 2012-11-08 2014-05-15 3M Innovative Properties Company Ribbed high density electrical cable
CN104871261A (zh) * 2012-12-06 2015-08-26 3M创新有限公司 屏蔽缆线
JP6939704B2 (ja) * 2018-05-25 2021-09-22 株式会社オートネットワーク技術研究所 配線部材
CN215730934U (zh) * 2021-04-01 2022-02-01 泰科电子(上海)有限公司 组合线缆
CN117597745A (zh) * 2021-07-19 2024-02-23 株式会社自动网络技术研究所 线束
US12340920B1 (en) * 2023-06-20 2025-06-24 Superior Essex International Inc. Twisted pair cables suitable for extended distance applications

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3584132A (en) * 1966-11-25 1971-06-08 Western Electric Co Multiconductor transmission media
US3663739A (en) * 1970-10-26 1972-05-16 Du Pont Uniform flat cables
US4155613A (en) * 1977-01-03 1979-05-22 Akzona, Incorporated Multi-pair flat telephone cable with improved characteristics
US4321425A (en) * 1979-02-02 1982-03-23 Emmel Leroy L Lattice cable and composite dielectric transmission line and method of making same
US4481379A (en) * 1981-12-21 1984-11-06 Brand-Rex Company Shielded flat communication cable
US4777325A (en) * 1987-06-09 1988-10-11 Amp Incorporated Low profile cables for twisted pairs
US5767441A (en) * 1996-01-04 1998-06-16 General Cable Industries Paired electrical cable having improved transmission properties and method for making same
US5821467A (en) * 1996-09-11 1998-10-13 Belden Wire & Cable Company Flat-type communication cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10357271B3 (de) * 2003-12-05 2005-02-03 W.E.T. Automotive Systems Ag Elektrische Schaltleiste

Also Published As

Publication number Publication date
US6043434A (en) 2000-03-28
EP0871182A1 (de) 1998-10-14
DE69801857T2 (de) 2002-05-02
FR2762133B1 (fr) 1999-06-11
DK0871182T3 (da) 2002-01-21
FR2762133A1 (fr) 1998-10-16
DE69801857D1 (de) 2001-11-08

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