EP1163682B1 - Strahlendes kabel - Google Patents

Strahlendes kabel Download PDF

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Publication number
EP1163682B1
EP1163682B1 EP00910958A EP00910958A EP1163682B1 EP 1163682 B1 EP1163682 B1 EP 1163682B1 EP 00910958 A EP00910958 A EP 00910958A EP 00910958 A EP00910958 A EP 00910958A EP 1163682 B1 EP1163682 B1 EP 1163682B1
Authority
EP
European Patent Office
Prior art keywords
cable
radiating
cable according
wires
insulated 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
EP00910958A
Other languages
English (en)
French (fr)
Other versions
EP1163682A1 (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
Silec Cable SAS
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 Silec Cable SAS filed Critical Silec Cable SAS
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

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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 networks for wireless data transmission up to about 2.4 GHz.
  • the radio coverage of large buildings often requires the installation of dedicated equipment. This coverage is achieved using antennas placed inside the buildings.
  • radiating cables arranged in the corridors would be technically interesting, but it generates costs often prohibitive. Indeed, current radiating cables are coaxial cables with periodic slot patterns and are expensive, bulky, rigid and difficult to install.
  • the object of the invention is to provide a low cost and easy to install radiating cable while having sufficient performance to ensure a satisfactory transmission of signals inside a building or a vehicle.
  • a radiating cable comprising at least one cable section, each cable section comprising a pair of insulated conductor wires, each cable section comprising a free end to which the insulated conductor wires have first ends connected to a load equal to a characteristic impedance of the cable section, the insulated conductors having second ends connected to a connector opposite the first ends.
  • the cable comprises at least two cable sections whose second ends are mounted in parallel on the connector. Given the equivalent impedance obtained by mounting the cable sections in parallel, it is thus possible to make 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, i.e. 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 the storage requirements and the cable can be installed without the need to locate the cable sections.
  • the radiating cable according to the particular embodiment illustrated comprises two cable sections generally designated 1, each comprising a pair of twisted insulated conductor wires 2 having first ends 3 connected to a load 4 and second ends 5 connected to a connector 6 according to 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 2.2 mm thick of cellular polyethylene having an expansion ratio of 41% and covered with polyethylene skin with a thickness of 0.08 mm.
  • the wire capacity thus produced is 210 pF / m and the insulator has a dielectric constant of 1.463.
  • a cable section comprising a twisted pair made from insulated conductors as described above then have a characteristic impedance of 100 Ohms so that when connected to a load of 100 Ohms, the impedance of the cable section is maintained at 100 Ohms regardless of its length.
  • each cable section has an equivalent impedance of 50 ohms corresponding to the nominal impedance usually required at the input / output of a transceiver.
  • the cable thus produced is well balanced, both in the direction of emission and in the sense of reception, and taking into account the linear attenuation, each cable section has a length of up to about 100 meters for a 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 ribbon 7 made of polyester, polypropylene or, more simply, of paper, but preferably of a material giving the cable a fire resistance such as a mineral ribbon in mica or glass silk.
  • the dielectric strip 7 is covered with a series of helically wound metal strips 8, the edges being separated by an interval preferably of the order of one to two times the width of the metal strips so that at high frequency the metal ribbon improves the maintenance of the characteristic impedance of the radiating cable at a constant value while allowing a release of radiant energy through the interstices between the ribbons 8.
  • the metal strips 8 can also be replaced by several metal wires wrapped around each of the insulated conductor wires.
  • the cable section further preferably comprises a thin outer sheath 9 of thermoplastic material or elastomer.
  • the cable according to the invention has been described according to an embodiment comprising identical cable sections connected in parallel, it is possible to provide different cable lengths either by their length or by their impedance. Depending on the structure of the area to be covered, it may indeed be interesting to use sections of cables with different performance, the weakening of each cable section being related to the average impedance thereof. In the case of cable lengths of different lengths, the cable with the highest impedance will preferably cover the longest area and the cable with 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 cable sections connected 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 area to be covered is very small, for example in a small building or a vehicle, it is possible to favor the radiation at the expense of the linear attenuation and to provide a cable comprising a pair of parallel wires connected to the load. .
  • 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 made without metal ribbons and / or without dielectric ribbon.

Landscapes

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

Claims (12)

  1. Strahlendes Kabel, umfassend mindestens einen Kabelabschnitt (1), wobei jeder Kabelabschnitt ein Paar von isolierten, leitenden Drähte (2) umfasst, dadurch gekennzeichnet, dass jeder Kabelabschnitt ein freies Ende hat, an dem die isolierten, leitenden Drähte erste Enden (3) haben, die mit einer Last (4) verbunden sind, die gleich einem charakteristischen Widerstand des Kabelabschnittes ist, wobei die isolierten, leitenden Drähte zweite Ende (5) haben, die entgegengesetzt zu den ersten Enden (3) mit einem Verbinder (6) verbunden sind.
  2. Strahlendes Kabel nach Anspruch 1, dadurch gekennzeichnet, dass es mindestens zwei Kabelabschnitte umfasst, deren zweite Enden (5) parallel an dem Verbinder (6) angebracht sind.
  3. Strahlendes Kabel nach Anspruch 2, dadurch gekennzeichnet, dass die zwei Kabelabschnitte (1) identisch sind.
  4. Strahlendes Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Paare von isolierten, leitenden Drähten (2) in einer Schutzhülle (9) angeordnet sind.
  5. Strahlendes Kabel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die isolierten, leitenden Drähte wenigstens teilweise verdrillt sind.
  6. Strahlendes Kabel nach Anspruch 5, dadurch gekennzeichnet, dass die Ganghöhe der Verdrillung der isolierten, leitenden Drähte (2) zwischen dem ca. 15-fachen und ca. 30-fachen des Durchmessers der isolierten Drähte beträgt.
  7. Strahlendes Kabel nach Anspruch 4 oder Anspruch 6, dadurch gekennzeichnet, dass die Verdrillung der Drähte abwechselnd rechtsgängig und linksgängig erfolgt.
  8. Strahlendes Kabel nach Anspruch 7, dadurch gekennzeichnet, dass ein rechtsgängig verdrillter Kabelabschnitt von einem linksgängig verdrillten Kabelabschnitt durch einen Kabelabschnitt getrennt ist, bei dem die isolierten Drähte im wesentlichen parallel zueinander sind.
  9. Strahlendes Kabel nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass es ein dielektrisches Band (7) umfasst, das mit den isolierten Drähten in Kontakt steht.
  10. Strahlendes Kabel nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es metallene Bänder (8) umfasst, die ohne Abdeckung schraubenförmig um die Paare von isolierten, leitenden Drähten gewickelt sind.
  11. Strahlendes Kabel nach Anspruch 10 in Abhängigkeit von Anspruch 9, dadurch gekennzeichnet, dass sich die metallenen Bänder (8) zwischen dem dielektrischen Band (7) und der äußeren Schutzhülle (9) erstrecken.
  12. Strahlendes Kabel nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sich die beiden Drähte des Paares voneinander durch mindestens einen der folgenden Parameter unterscheiden: der Durchmesser der Leiter, die Beschaffenheit oder die Konstruktion der Leiter, die Dicke oder die Beschaffenheit des die Leiter umgebenden Isolators.
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 EP1163682A1 (de) 2001-12-19
EP1163682B1 true 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

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
EP1163682A1 (de) 2001-12-19
DE60032587D1 (de) 2007-02-08
JP2002540662A (ja) 2002-11-26
DE60032587T2 (de) 2007-10-04
FR2791475A1 (fr) 2000-09-29
US6781051B1 (en) 2004-08-24

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