EP1163682A1 - Strahlendes kabel - Google Patents

Strahlendes kabel

Info

Publication number
EP1163682A1
EP1163682A1 EP00910958A EP00910958A EP1163682A1 EP 1163682 A1 EP1163682 A1 EP 1163682A1 EP 00910958 A EP00910958 A EP 00910958A EP 00910958 A EP00910958 A EP 00910958A EP 1163682 A1 EP1163682 A1 EP 1163682A1
Authority
EP
European Patent Office
Prior art keywords
cable
wires
radiant
cable according
insulated
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
EP00910958A
Other languages
English (en)
French (fr)
Other versions
EP1163682B1 (de
Inventor
Thierry Linossier
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.)
Silec Cable SAS
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Publication of EP1163682A1 publication Critical patent/EP1163682A1/de
Application granted granted Critical
Publication of EP1163682B1 publication Critical patent/EP1163682B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/203—Leaky coaxial lines

Definitions

  • the present invention relates to a radiating cable used in particular in the field of cellular telephony or in local wireless data transmission networks up to about 2.4 GHz.
  • Radio coverage of large buildings often requires the installation of dedicated equipment. This coverage is carried out using antennas placed inside the buildings.
  • the use of radiating cables arranged in the corridors would be technically advantageous, but it often entails prohibitive costs.
  • current radiating cables are coaxial cables with patterns of periodic slits and are expensive, bulky, rigid and difficult to lay.
  • the object of the invention is to provide a radiating cable of low cost and easy to lay while having sufficient performance to ensure satisfactory transmission of signals inside a building or a vehicle.
  • a radiating cable comprising a pair of insulated conducting wires, at least one section of cable having first ends connected to a load equal to a characteristic impedance of the section of cable and second ends connected to a connector.
  • the cable comprises at least two sections of cable, the second ends are mounted in parallel on the connector. Taking into account the equivalent impedance obtained by mounting the cable sections in parallel, it is thus possible to produce a cable having an impedance adapted to the transmitter / receiver to which the radiating cable is connected while producing the radiating cable from sections of cables having a higher impedance, that is to say generally having better transmission performance than a single cable corresponding to the nominal impedance of the transmitter / receiver.
  • the two cable sections are identical. This minimizes storage requirements and the cable can be installed without requiring the identification of cable sections.
  • FIG. 1 is a diagrammatic representation of a radiating cable according to the invention comprising two sections of cable mounted in parallel,
  • FIG. 2 is a perspective view of a portion of cable according to the invention.
  • the radiating cable according to the particular embodiment illustrated comprises two sections of cable generally designated at 1, each comprising a pair of insulated conductive wires 2 twisted having first ends 3 connected to a load 4 and second ends 5 connected to a connector 6 in a parallel connection.
  • the two cable sections 1 are identical and are each made from a pair of solid copper conductors having a diameter of 1.38 mm covered with an insulator having a thickness of 2.2 mm in cellular polyethylene having an expansion rate of 41% and covered with a polyethylene skin with a thickness of 0.08 mm.
  • the capacity of the wire thus produced is 210 pF / m and the insulator has a dielectric constant of 1.463.
  • a section of cable comprising a twisted pair produced from insulated conductors as described above then has a characteristic impedance of 100 Ohms so that when they are connected to a load of 100 Ohms, the impedance of the section of cable is maintained at 100 Ohms regardless of its length.
  • each section of cable has an equivalent impedance of 50 Ohms corresponding to the nominal impedance usually required at the input / output of a transmitter / receiver.
  • the cable thus produced is well balanced, both in the direction of transmission and in the direction of reception and taking into account the linear loss, each section of cable has a length of up to about 100 meters for transmission at 450 MHz, approximately 75 meters at 900 MHz, approximately 45 meters at 1800 MHz and approximately 35 meters at 2.4 GHz.
  • the insulated conductors are held together by a dielectric tape 7 made of polyester, polypropylene or more simply of paper, but preferably of a material giving the cable fire resistance such as a mineral tape in mica or glass silk.
  • the dielectric tape 7 is covered with a series of metal tapes 8 wound in a helix, the edges being separated by an interval preferably of the order of one to twice the width of the metal tapes so that 'at high frequency the metallic strip improves the maintenance of the characteristic impedance of the radiating cable at a constant value while allowing a release of energy.
  • the metallic ribbons 8 can also be replaced by several metallic wires wrapped around each of the insulated conducting wires.
  • the cable section also preferably includes a thin outer sheath 9 made of thermoplastic or elastomer.
  • the cable according to the invention has been described according to an embodiment comprising identical cable sections mounted in parallel, it is possible to provide different cable sections either by their length or by their impedance. Depending on the structure of the area to be covered, it may indeed be advantageous to use sections of cables having different performances, the weakening of each section of cable being related to the average impedance thereof. In the case of cable sections of different lengths, the cable having the highest impedance will preferably cover the longest area and the cable having the lowest impedance will cover the shortest area.
  • the geometry of the premises to be covered is complex, it is also possible to envisage more than two sections of cables mounted in parallel, the characteristic impedance of each section of cable being chosen so that the equivalent impedance of the radiating cable corresponds to the nominal impedance of the transmitter / receiver used.
  • the flexibility of the cable can be improved by replacing the solid conductors with strands of small conductive wires.
  • the cable of the invention can also be produced without metallic tapes and / or without dielectric tape.

Landscapes

  • Communication Cables (AREA)
  • Waveguide Aerials (AREA)
  • Insulated Conductors (AREA)
EP00910958A 1999-03-23 2000-03-16 Strahlendes kabel Expired - Lifetime EP1163682B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9903586 1999-03-23
FR9903586A FR2791475B1 (fr) 1999-03-23 1999-03-23 Cable rayonnant
PCT/FR2000/000634 WO2000057431A1 (fr) 1999-03-23 2000-03-16 Cable rayonnant

Publications (2)

Publication Number Publication Date
EP1163682A1 true EP1163682A1 (de) 2001-12-19
EP1163682B1 EP1163682B1 (de) 2006-12-27

Family

ID=9543518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00910958A Expired - Lifetime EP1163682B1 (de) 1999-03-23 2000-03-16 Strahlendes kabel

Country Status (8)

Country Link
US (1) US6781051B1 (de)
EP (1) EP1163682B1 (de)
JP (1) JP2002540662A (de)
AU (1) AU3298700A (de)
DE (1) DE60032587T2 (de)
ES (1) ES2277830T3 (de)
FR (1) FR2791475B1 (de)
WO (1) WO2000057431A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2868573B1 (fr) * 2004-04-02 2006-06-23 Airbus France Sas Procede d'optimisation d'un cablage electrique, notamment dans le domaine aeronautique
FR2920918B1 (fr) * 2007-09-06 2009-10-23 Nexans Sa Cable rayonnant.
FR3012661B1 (fr) * 2013-10-28 2015-12-04 Labinal Procede de caracterisation d'un toron de cables electriques
EP2897217A1 (de) * 2014-01-21 2015-07-22 Delphi Technologies, Inc. Vorrichtung zur Impedanzanpassung

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2192344B1 (de) * 1972-07-07 1975-03-07 Thomson Csf
GB1431243A (en) * 1974-03-07 1976-04-07 Standard Telephones Cables Ltd Radiating cable arrangement
GB1583957A (en) * 1977-03-10 1981-02-04 Bicc Ltd Electric cables
GB1597125A (en) * 1977-08-24 1981-09-03 Bicc Ltd Radiating cables
US4339733A (en) * 1980-09-05 1982-07-13 Times Fiber Communications, Inc. Radiating cable
US4413469A (en) * 1981-03-23 1983-11-08 Allied Corporation Method of making low crosstalk ribbon cable
US4404424A (en) * 1981-10-15 1983-09-13 Cooper Industries, Inc. Shielded twisted-pair flat electrical cable
US4432193A (en) * 1982-09-20 1984-02-21 501 Control Data Canada, Ltd. Method of grading radiating transmission lines
EP0272211A3 (de) * 1986-12-18 1989-07-05 Maillefer S.A. Electrisches Kabel, Kabelherstellungsverfahren und Einrichtung zur Durchführung des Verfahrens
US4860343A (en) * 1986-12-22 1989-08-22 Zetena Jr Maurice F Composite cable for use in high frequency data and voice transmission
US5247270A (en) * 1987-12-01 1993-09-21 Senstar Corporation Dual leaky cables
US4885747A (en) * 1988-02-17 1989-12-05 International Business Machines Corp. Broadband and baseband LAN
US5010399A (en) * 1989-07-14 1991-04-23 Inline Connection Corporation Video transmission and control system utilizing internal telephone lines
CA2010390A1 (en) * 1990-02-20 1991-08-20 Robert Keith Harman Open transmission line locating system
US5113159A (en) * 1990-02-22 1992-05-12 At&T Bell Laboratories Communications transmission system including facilities for suppressing electromagnetic interference
FR2665311B1 (fr) * 1990-07-30 1994-03-25 Alcatel Cable Dispositif de transmission radioelectrique a cables rayonnants.
FR2686727B1 (fr) * 1992-01-28 1997-01-31 Filotex Sa Conducteur electrique et cable electrique contenant un tel conducteur.
US5321372A (en) * 1993-01-08 1994-06-14 Synoptics Communications, Inc. Apparatus and method for terminating cables to minimize emissions and susceptibility
US5381348A (en) * 1993-01-11 1995-01-10 Fluke Corporation Token ring local area network testing apparatus using time delay reflectory
US5348397A (en) * 1993-03-29 1994-09-20 Ferrari R Keith Medical temperature sensing probe
FR2726708B1 (fr) * 1994-11-09 1997-01-31 Peugeot Dispositif d'adaptation d'une interface de ligne d'une station raccordee a un reseau de transmission d'informations multiplexees
JP3233861B2 (ja) * 1996-10-31 2001-12-04 住友電装株式会社 絶縁導体対及びこの絶縁導体対を用いた誘導ケーブル
FR2771859B1 (fr) 1997-11-28 1999-12-31 Telecommunications Sa Cable rayonnant
US6195561B1 (en) * 1998-07-03 2001-02-27 Tunnel Radio Of America, Inc. Antenna system for two-way UHF underground radio system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0057431A1 *

Also Published As

Publication number Publication date
ES2277830T3 (es) 2007-08-01
AU3298700A (en) 2000-10-09
FR2791475B1 (fr) 2007-02-23
WO2000057431A1 (fr) 2000-09-28
DE60032587D1 (de) 2007-02-08
JP2002540662A (ja) 2002-11-26
EP1163682B1 (de) 2006-12-27
DE60032587T2 (de) 2007-10-04
FR2791475A1 (fr) 2000-09-29
US6781051B1 (en) 2004-08-24

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