EP0643399A1 - Hochfrequenzübertragungskabel - Google Patents

Hochfrequenzübertragungskabel Download PDF

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Publication number
EP0643399A1
EP0643399A1 EP94402005A EP94402005A EP0643399A1 EP 0643399 A1 EP0643399 A1 EP 0643399A1 EP 94402005 A EP94402005 A EP 94402005A EP 94402005 A EP94402005 A EP 94402005A EP 0643399 A1 EP0643399 A1 EP 0643399A1
Authority
EP
European Patent Office
Prior art keywords
bundles
cable according
rod
grooves
assembly
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.)
Granted
Application number
EP94402005A
Other languages
English (en)
French (fr)
Other versions
EP0643399B1 (de
Inventor
Patrick Rofidal
Serge Damilo
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.)
Alcatel Lucent SAS
Original Assignee
Filotex SA
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 Filotex SA filed Critical Filotex SA
Publication of EP0643399A1 publication Critical patent/EP0643399A1/de
Application granted granted Critical
Publication of EP0643399B1 publication Critical patent/EP0643399B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention relates to a high frequency transmission cable, of the type comprising individually insulated electrical conductors and assembled in several bundles often protected by shielding, and comprising an external sheath of overall protection.
  • Such cables are used in particular in the computer field for high frequency data transmission, which can be of the order of 100 MHz. They are often flat in shape.
  • the bundles of insulated conductors can be pairs, thirds or fourths. They can also be assembled into at least one set.
  • the conductors isolated from the bundles of the same assembly are then advantageously assembled with different pitches for the constitution of the different bundles of this assembly.
  • the shield then surrounds each set of beams.
  • each assembly can be achieved by an insulating tape, for example made of polyester, the outer face of which is metallized.
  • This ribbon is laid lengthwise or helically overlapping its edges, around the set of bundles.
  • it makes it possible to reduce crosstalk between beams and reach a limit value of the order of -35 dB at 100 MHz, but not lower.
  • Document Wo-A-86/05311 describes a flat computer cable in which the individually insulated conductors are assembled in pairs protected by an individual shielding screen, these insulated conductors all being positioned in the same plane.
  • this cable two insulated conductors positioned side by side are assembled in a pair by a first insulating coating extruded around these two insulated conductors and thus embedded in it. Each pair is protected by a metallic shielding tape surrounding it.
  • the protected pairs positioned side by side are assembled by a second insulating coating extruded around them, forming the overall protective outer sheath of the cable.
  • the first coating is made of polyvinyl chloride, which does not adhere to the insulation of the conductors made of polyethylene or propylene.
  • the stripping operations are themselves long.
  • the choice of the first PVC coating on the PE or PP for insulating the conductors leads to lower dielectric performance than that which can be obtained in PE or PP or one of their copolymers, but causing it to adhere very strongly to insulated conductors then made very difficult to strip.
  • the present invention aims to achieve a high frequency cable avoiding the drawbacks of the aforementioned known embodiment and making it possible to achieve crosstalk levels of the order of -40 to -50 dB at 100 MHz.
  • a high frequency transmission cable comprising individually insulated electrical conductors and assembled in several bundles themselves assembled in at least one assembly, and an external sheath of overall protection, characterized in that it further comprises a grooved dielectric rod for assembling the bundles of each assembly, provided with longitudinal grooves, each of section adapted to that of one of the bundles of the assembly concerned and open by a slot on the periphery of the rod, in which the different beams of the assembly concerned are maintained individually by being separated from each other.
  • the single figure is a sectional view of a high frequency transmission cable according to the invention.
  • This cable is flat and has two quads 1.
  • Each of the quads consists of a twist of four solid conductors 2, in particular made of copper, each coated with insulation 3 preferably in PE or PP.
  • the dielectric rod 5 has for this purpose two grooves 6 in length receiving these two quarters.
  • Each of these grooves is of circular section, adapted to that of the quads 1. It is opened by a narrow slot 7 on the periphery of the rod, initially or when the quarter is put in place.
  • This slot is of almost zero or very small width, of a few tenths of a millimeter or more advantageously of the order of a few hundredths of a millimeter only, for its subsequent closing.
  • This dielectric rod 5 is an extruded profile, preferably made of polyethylene or polypropylene. It is of elliptical section, for a desired flat shape of the cable, with its two grooves and their slots centered on the major axis of the ellipse. It plays the role of spacer maintaining and separating the two quarters. Its axial zone between the two grooves is of minimum thickness of at least 0.2mm and is preferably of the order of 0.3mm for insulated conductors with a diameter of approximately 1.3mm.
  • the cable further comprises a shielding screen 8, in the form of a ribbon laid lengthwise and overlapping its edges around the dielectric rod and the two quarters thus assembled, and a screen continuity wire 9, interposed between the screen and the dielectric rod.
  • This screen can be metallic or be dielectric and then metallized and in particular aluminized. It keeps the slots of the different grooves of the rod it surrounds closed.
  • This set of two quarters thus protected is covered with an outer sheath 10 of overall protection.
  • This sheath ensures a tight hold of the screen around the rod, the grooves of which are thus closed. It is extruded directly on the screen as soon as it is installed.
  • It can be made of PE, PP or preferably PVC or other conventional sheathing material.
  • this cable is quick and simple. It is carried out on a production line not illustrated, comprising means for running the rod, two sets of spacers inserted in the slots of the grooves of the rod for their opening by elastic deformation, means for guiding and inserting the two quarters in the open grooves of the rod, means for guiding the screen continuity wire against the rod, means for guiding and placing the shielding tape around the rod and a terminal extrusion die for the sheath protective exterior.
  • the rod may have a section other than elliptical, while being without any sharp peripheral edge. It can also include more than two longitudinal grooves, each of section adapted to the section of the beam to be mounted therein, the bundles assembled in the rod being able to be fourths and / or thirds and / or pairs.
  • the slots of the different grooves can be relatively wide. They are then closed by a dielectric gasket attached and retained in each of them or by an external dielectric tape surrounding the rod or by the shielding screen with a dielectric layer, preferably of reinforced thickness.
  • This grooved rod cable for retaining and separating the bundles of each assembly can also be without a shielding screen.
  • the cable can comprise several rods surrounded or not by their individual shielding screen and retained side by side in an outer sheath extruded around them.

Landscapes

  • Communication Cables (AREA)
EP94402005A 1993-09-09 1994-09-08 Hochfrequenzübertragungskabel Expired - Lifetime EP0643399B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9310732 1993-09-09
FR9310732A FR2709860B1 (fr) 1993-09-09 1993-09-09 Câble de transmission haute fréquence.

Publications (2)

Publication Number Publication Date
EP0643399A1 true EP0643399A1 (de) 1995-03-15
EP0643399B1 EP0643399B1 (de) 1998-02-25

Family

ID=9450697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402005A Expired - Lifetime EP0643399B1 (de) 1993-09-09 1994-09-08 Hochfrequenzübertragungskabel

Country Status (4)

Country Link
US (1) US5565653A (de)
EP (1) EP0643399B1 (de)
DE (1) DE69408613T2 (de)
FR (1) FR2709860B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748845A1 (fr) * 1996-05-14 1997-11-21 Filotex Sa Cable electrique de transmission haute frequence

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE518306C2 (sv) * 1997-03-24 2002-09-24 Abb Ab Anordning vid spänningsstyva omriktaranordningar
US6684030B1 (en) 1997-07-29 2004-01-27 Khamsin Technologies, Llc Super-ring architecture and method to support high bandwidth digital “last mile” telecommunications systems for unlimited video addressability in hub/star local loop architectures
US6091025A (en) 1997-07-29 2000-07-18 Khamsin Technologies, Llc Electrically optimized hybird "last mile" telecommunications cable system
FR2771546B1 (fr) * 1997-11-27 1999-12-31 Alsthom Cge Alcatel Cable de transmission de donnees
US6239379B1 (en) 1998-07-29 2001-05-29 Khamsin Technologies Llc Electrically optimized hybrid “last mile” telecommunications cable system
DE19947825C1 (de) * 1999-10-05 2001-03-15 Daetwyler Ag Kabel & Systeme A Verfahren zur Herstellung eines Datenübertragungskabels
US6281443B1 (en) * 1999-10-13 2001-08-28 Erik J. Idler Electrical cable
CA2313919C (en) * 2000-07-17 2008-09-23 C-Tech Energy Services Inc. Downhole communication method and apparatus
CN1220218C (zh) * 2002-07-18 2005-09-21 东莞蔻玛电子有限公司 高频传输缆线构造
US7214884B2 (en) * 2003-10-31 2007-05-08 Adc Incorporated Cable with offset filler
US7115815B2 (en) * 2003-10-31 2006-10-03 Adc Telecommunications, Inc. Cable utilizing varying lay length mechanisms to minimize alien crosstalk
US7259993B2 (en) * 2005-06-03 2007-08-21 Infineon Technologies Ag Reference scheme for a non-volatile semiconductor memory device
US7375284B2 (en) * 2006-06-21 2008-05-20 Adc Telecommunications, Inc. Multi-pair cable with varying lay length
JP2011096574A (ja) * 2009-10-30 2011-05-12 Hitachi Cable Ltd 差動信号伝送用ケーブル
CN102646467B (zh) * 2012-03-06 2015-05-20 立讯精密工业股份有限公司 一种设有导电塑胶材料层的信号传输线
US20140262424A1 (en) * 2013-03-14 2014-09-18 Delphi Technologies, Inc. Shielded twisted pair cable
JP6886407B2 (ja) * 2015-12-25 2021-06-16 日立金属株式会社 複合ケーブル及び複合ハーネス
JP6673071B2 (ja) * 2016-07-19 2020-03-25 株式会社オートネットワーク技術研究所 シールド部材、シールド部材付電線、シールド部材の中間製造物及びシールド部材の製造方法
US11935670B1 (en) * 2021-09-02 2024-03-19 Southwire Company, Llc Conductor assembly separator
US12014847B2 (en) * 2021-12-03 2024-06-18 Aptiv Technologies AG Cable for connecting system components

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665605A1 (de) * 1965-12-23 1971-04-08 Siemens Ag Verfahren zur Herstellung eines Meldeleiterpaares zur UEberwachung von Kabeln oder Leitungen gegenueber dem Eindringen von Feuchtigkeit
DE3405852A1 (de) * 1984-02-15 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Mehradrige flexible elektrische leitung
US4674822A (en) * 1984-11-21 1987-06-23 Virginia Plastics Company Multi-conductor shielded cable

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673315A (en) * 1970-09-08 1972-06-27 Belden Corp Shielded cable
US3894172A (en) * 1973-11-06 1975-07-08 Gen Cable Corp Multicable telephone cable in a common sheath
GB1448793A (en) * 1974-05-31 1976-09-08 Post Office Optical cables
CA1197297A (en) * 1983-06-08 1985-11-26 Bicc General Industrial Cables Limited Electric cable
JPS6179448A (ja) * 1984-09-25 1986-04-23 株式会社東芝 Ｘ線ｃｔスキヤナ
US4755629A (en) * 1985-09-27 1988-07-05 At&T Technologies Local area network cable
US4777325A (en) * 1987-06-09 1988-10-11 Amp Incorporated Low profile cables for twisted pairs
US5132488A (en) * 1991-02-21 1992-07-21 Northern Telecom Limited Electrical telecommunications cable
US5399813A (en) * 1993-06-24 1995-03-21 The Whitaker Corporation Category 5 telecommunication cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665605A1 (de) * 1965-12-23 1971-04-08 Siemens Ag Verfahren zur Herstellung eines Meldeleiterpaares zur UEberwachung von Kabeln oder Leitungen gegenueber dem Eindringen von Feuchtigkeit
DE3405852A1 (de) * 1984-02-15 1985-08-22 Siemens AG, 1000 Berlin und 8000 München Mehradrige flexible elektrische leitung
US4674822A (en) * 1984-11-21 1987-06-23 Virginia Plastics Company Multi-conductor shielded cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748845A1 (fr) * 1996-05-14 1997-11-21 Filotex Sa Cable electrique de transmission haute frequence

Also Published As

Publication number Publication date
FR2709860B1 (fr) 1995-10-20
FR2709860A1 (fr) 1995-03-17
DE69408613T2 (de) 1998-06-18
EP0643399B1 (de) 1998-02-25
US5565653A (en) 1996-10-15
DE69408613D1 (de) 1998-04-02

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