EP1130604A2 - Câble de données ou de commande et procédé pour optimiser un tel câble - Google Patents

Câble de données ou de commande et procédé pour optimiser un tel câble Download PDF

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Publication number
EP1130604A2
EP1130604A2 EP01105023A EP01105023A EP1130604A2 EP 1130604 A2 EP1130604 A2 EP 1130604A2 EP 01105023 A EP01105023 A EP 01105023A EP 01105023 A EP01105023 A EP 01105023A EP 1130604 A2 EP1130604 A2 EP 1130604A2
Authority
EP
European Patent Office
Prior art keywords
conductor
data
control cable
conductors
cross
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Withdrawn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
EP01105023A
Other languages
German (de)
English (en)
Other versions
EP1130604A3 (fr
Inventor
Werner Dipl.-Ing. Mertens
Jörg Bör
Günter Gerhard
Yvan Engels
Waldemar Reimann
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.)
Kerpen Kabelkerpenwerk & Co GmbH
Original Assignee
Kerpen Kabelkerpenwerk & 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 Kerpen Kabelkerpenwerk & Co GmbH filed Critical Kerpen Kabelkerpenwerk & Co GmbH
Publication of EP1130604A2 publication Critical patent/EP1130604A2/fr
Publication of EP1130604A3 publication Critical patent/EP1130604A3/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Withdrawn legal-status Critical Current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 or control cable with at least a forward and a return conductor.
  • the invention also relates to a Method for optimizing such a control cable.
  • data or Control cable any cable arrangement that is suitable for data or Control signals at frequencies above 1 MHz, especially above 50 MHz or over 100 MHz, preferably in digital form.
  • the invention proposes on the one hand a data or Control cable with at least one forward and one return conductor, at which has at least one conductor in its geometric shape with respect to a cross-sectional center of gravity of the conductor is rotationally symmetrical.
  • the Term "cross-sectional center of gravity" a line through a Leaders, who focus on the respective focus, especially the geometrical focal points, each one next to each other Cross-section is formed.
  • the term "field” is in the essentially directed to an electric field, which is at a signal transmission through the data or control cable.
  • magnetic fields or electromagnetic fields can be influenced accordingly advantageously.
  • field also apply to a pair of data or control cable propagating shaft, which by the Operating frequency excited carries a signal.
  • the invention thus provides for the first time a generic data or control cable is ready at its single cores in cross-section from a round basic geometry is deviated.
  • the forward and return conductors are preferably mutually exclusive opposite mirror-symmetrical.
  • one Data or control cable which carries exactly two wires in this regard in particular a mirror symmetry with respect to a plane of symmetry arranged between the two conductors advantageous. It is understood that such an arrangement Field evenly in the desired area, preferably between the two leaders.
  • At least a first conductor can cross-section on its other side facing the conductor is flatter than the middle Radius of curvature of the first conductor.
  • the surface portion of this conductor surface can be which faces the other leader.
  • At least one conductor can have a triangular, trapezoidal, semicircular or circular segment-shaped or a rectangular, preferably have a square cross section.
  • At least one conductor can have two corners, each through convex circumferential lines, by concave circumferential lines or by a convex and a concave circumferential line connected to each other are.
  • the invention proposes a data or Control cable with at least one forward and one return conductor, at which the conductors are designed such that the second Location of a field between these conductors along the shortest connection between these conductors is smaller than that second location derivation of a round pair of conductors, each with identical Cross sectional area.
  • the invention also suggests a data or control cable at least one forward and one return conductor, in which the Conductors are designed such that the second location derivative of a Field between these conductors along the surface line at least one conductor has more than two zero points.
  • the invention proposes a data or control cable at least one forward and one return conductor, in which the Conductors are designed such that the second location derivative of a Field between these conductors along a perpendicular to the shortest connection between these conductors by a Center of this shortest connection in the area of The amount of the center is smaller than the second location derivative of a round pair of conductors, each with an identical cross-sectional area in exactly this area.
  • Such a field course can be, for example, by Optimization method in the manner according to the invention provide that of a given conductor cross section one Conductor pair starting from a field density around the conductor pair determined and then the surface shape of at least one Conductor is varied such that the field density between the and the return conductor is enlarged.
  • Such a field can also be created using an optimization method are provided, which of a given conductor cross section determined the field density around the pair of conductors and then the surface shape of at least one conductor varies that the field density is reduced at a desired location.
  • the present invention relates in particular to data or control cables which are operated under boundary conditions in which the equivalent conductive layer thickness is less than 100 ⁇ m , preferably less than 70 ⁇ m .
  • the equivalent conductive layer thickness results from the skin effect, according to which a current flows more and more on the outer circumference of a conductor with increasing frequencies, and describes the depth of the surface area resulting from this consideration, which corresponds to the corresponding behavior of the respective conductor explained under the occurring frequencies.
  • the invention relates in particular to data or Control cables, which consist of solid conductors, because with these the claimed surface formations can be realized more precisely can, as is the case with strands or cables.
  • conductors according to the invention also from strands or Shaping cables, as long as the resulting structures in the Surfaces are mastered or are sufficiently small.
  • a particularly compact structure of the data or control cable follows when the pair of conductors from a common Isolation is surrounded, whose outer curvature in cross section has only one direction of curvature. In particular, this can common insulation a circular outer cross-section exhibit. With such a configuration, it presents itself
  • the cable is extremely elegant on the outside.
  • the Isolation in the areas next to the greatest field strength relatively strong between the circuit diagram. Since the isolation with their relatively large dielectric constant ⁇ a field counteracts, such a structure requires that the field still is pushed further into the area between the pair of conductors. It it goes without saying that insulation designed in this way also regardless of the other features of the present invention is advantageous.
  • the insulation preferably encloses both conductors of the cable independently. This requires a particularly compact structure and also ensures that there is a distance between the two Ladders are observed very precisely. Such isolation " a cast "is also independent of the other features accordingly advantageous.
  • a waveguide preferably with an ⁇ ⁇ 1.5.
  • the term "waveguide” designates any constructive Refinement that is made between the heads to a Spread a wave traveling between these conductors facilitate.
  • a waveguide To form white space.
  • Such an empty space usually has one very low dielectric constant and thus favors one Spread a wave.
  • Such an empty space can be particularly useful just deploy when the waveguide and the back and forth Return conductors are surrounded by a common insulation. In in this case, a corresponding one can simply be used in the insulation Empty space should be provided. In addition, such Empty space - as required - evacuated or with a gas or air be filled.
  • Waveguide also independent of the other characteristics of the present invention is advantageous to spreading a wave between the forward and the return conductor of a data or Promote control cables.
  • Compose is the specified Frequency preferably the center of gravity frequency, which - not too confuse with a carrier frequency from telecommunications - the Frequency with the greatest power amplitude.
  • the Center of gravity is usually used for physical Dimensioning of the transmission channels used and can, depending on used transmission method significantly lower than that Data transfer rate are.
  • the present Invention in particular on data or control cables for the Transmission of bit streams can be used.
  • baseband transmission methods are used and broadband transmission methods.
  • the former are unmodulated, while the latter with a modulation frequency are highlighted.
  • the most famous broadband transmission methods include the various pulse modulation methods (for example PAM, PCM, PWM) and shift keying methods (e.g. PSK, FSK, ASK, DPSK).
  • the main baseband transmission methods are Single current, double current, ternary or pseudo ternary methods (e.g. MLT coding, 8B / 6T coding, CAP coding, AMI coding). This also includes Manchester coding, Bipolar method (HDB coding) and coded diphase method.
  • the frequency spectrum is of the transmission signal and the bandwidth it occupies directly depending on the transmission speed, but can vary depending on used transmission method vary widely.
  • the digital Signals are fed into the cable in the form of pulses and occupy the entire bandwidth of the cable - or part of it, the other part usually no longer being used for other services is usable.
  • Baseband transmission methods only offer one Channel that accordingly to the different needs needs to be tailored.
  • the data or control cable shown schematically in FIG. 1 comprises a pair of conductors 1 consisting of a forward and a return conductor, which is surrounded by a schematically indicated field 2.
  • the conductors 1 are in relation to them Cross-sectional center of gravity formed asymmetrically.
  • the side facing the other conductor 1 is flatter than that medium radius of curvature selected.
  • the conductors 1 are relative to one Level of symmetry 3 designed mirror-symmetrical.
  • the field formed by this ladder shape is on the gap compressed between the conductors 1.
  • a shortest Connection 4 between the conductors 1 is the field opposite one Field with conductors which have a round conductor cross section, thus higher in terms of field strength.
  • this shortest Connection 4 is the variation of the field strength reduced. This leads directly to the second derivative this field along the shortest connection 4 between them Conductors is smaller than the second derivative of a round pair of conductors with identical cross-sectional area.
  • FIGS. 2 to 4 Further advantageous conductor shapes are shown in FIGS. 2 to 4 the conductor pairs 5, 6 and 7 shown.
  • the form is in Depending on the desired field effects as well as in Dependence on that for a corresponding ladder shape necessary manufacturing costs chosen.
  • FIGS. 5 and 6 have each have a pair of conductors 8 and 9, which are from a common Isolation 10 or 11 is surrounded.
  • a common Isolation 10 or 11 is surrounded.
  • the common insulation 10 and 11 enclose in both Embodiments each have a waveguide 12 or 13.
  • This Waveguide is arranged in the area in which the greatest field strength is formed and in which thus one moving wave between conductors 8 and 9 respectively.
  • the waveguides are 12 or 13 formed by an empty space in the insulation 10 or 11. In addition to air, this empty space can also be used with another gas be filled or evacuated.

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  • Communication Cables (AREA)
EP01105023A 2000-03-01 2001-03-01 Câble de données ou de commande et procédé pour optimiser un tel câble Withdrawn EP1130604A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000109809 DE10009809A1 (de) 2000-03-01 2000-03-01 Daten- bzw. Steuerkabel sowie Verfahren zur Opitimierung eines derartgigen Kabels
DE10009809 2000-03-01

Publications (2)

Publication Number Publication Date
EP1130604A2 true EP1130604A2 (fr) 2001-09-05
EP1130604A3 EP1130604A3 (fr) 2002-11-13

Family

ID=7632999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105023A Withdrawn EP1130604A3 (fr) 2000-03-01 2001-03-01 Câble de données ou de commande et procédé pour optimiser un tel câble

Country Status (2)

Country Link
EP (1) EP1130604A3 (fr)
DE (1) DE10009809A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114327A1 (fr) * 2003-06-19 2004-12-29 Belden Cdt Networking, Inc. Cable electrique comprenant des conducteurs a optimisation geometrique
US7405360B2 (en) 1997-04-22 2008-07-29 Belden Technologies, Inc. Data cable with cross-twist cabled core profile
US7449638B2 (en) 2005-12-09 2008-11-11 Belden Technologies, Inc. Twisted pair cable having improved crosstalk isolation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6074503A (en) 1997-04-22 2000-06-13 Cable Design Technologies, Inc. Making enhanced data cable with cross-twist cabled core profile

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE182381C (fr) *
CH163202A (de) * 1926-07-05 1933-07-31 Socaso A G Elektrisches Mehrleiterkabel.
NL124378C (fr) * 1964-01-29
DE1640647B2 (de) * 1966-11-19 1973-10-18 Kabelwerk Rheydt Ag, 4070 Rheydt Elektrisches Mehrleiterstarkstromkabel
DE9302174U1 (de) * 1993-02-16 1994-06-09 Automation Dr. Meggl Gmbh, 85757 Karlsfeld Flexibles elektrisches Kabel
DE4441268A1 (de) * 1994-11-19 1996-05-23 Daimler Benz Ag Mehrfachleitung für Gleich- und Wechselspannungen
DE19543969C1 (de) * 1995-11-08 1997-04-10 Ernst & Engbring Gmbh Koaxialkabel mit hoher Wechselbiegefestigkeit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7405360B2 (en) 1997-04-22 2008-07-29 Belden Technologies, Inc. Data cable with cross-twist cabled core profile
US7534964B2 (en) 1997-04-22 2009-05-19 Belden Technologies, Inc. Data cable with cross-twist cabled core profile
WO2004114327A1 (fr) * 2003-06-19 2004-12-29 Belden Cdt Networking, Inc. Cable electrique comprenant des conducteurs a optimisation geometrique
GB2419029A (en) * 2003-06-19 2006-04-12 Belden Cdt Networking Inc Electrical cable comprising geometrically optimized conductors
GB2419029B (en) * 2003-06-19 2007-09-05 Belden Cdt Networking Inc Electrical cable comprising geometrically optimized conductors
US7462782B2 (en) 2003-06-19 2008-12-09 Belden Technologies, Inc. Electrical cable comprising geometrically optimized conductors
US7449638B2 (en) 2005-12-09 2008-11-11 Belden Technologies, Inc. Twisted pair cable having improved crosstalk isolation
US8198536B2 (en) 2005-12-09 2012-06-12 Belden Inc. Twisted pair cable having improved crosstalk isolation

Also Published As

Publication number Publication date
EP1130604A3 (fr) 2002-11-13
DE10009809A1 (de) 2001-09-06

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