WO1994002948A1 - Cable coaxial enroule - Google Patents

Cable coaxial enroule Download PDF

Info

Publication number
WO1994002948A1
WO1994002948A1 PCT/US1993/006839 US9306839W WO9402948A1 WO 1994002948 A1 WO1994002948 A1 WO 1994002948A1 US 9306839 W US9306839 W US 9306839W WO 9402948 A1 WO9402948 A1 WO 9402948A1
Authority
WO
WIPO (PCT)
Prior art keywords
coaxial cord
cord
coiled coaxial
layer
coiled
Prior art date
Application number
PCT/US1993/006839
Other languages
English (en)
Inventor
Antonio Del Sesto
Allen L. Christenson
David O. Fundin
Original Assignee
Motorola, Inc.
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 Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1994002948A1 publication Critical patent/WO1994002948A1/fr

Links

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
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • H01B11/1821—Co-axial cables with at least one wire-wound conductor

Definitions

  • This invention relates generally to coaxial cords, and more in particular to a coiled coaxial cord with improved impedance characteristics.
  • the typical straight coaxial cord 10 comprises of conductor 18 covered by a dielectric 16, which in turn is covered or surrounded by a braided shield 14.
  • an outer non-conductive sleeve 12 preferably made of a resilient plastic or rubber covers the braided shield 14.
  • a coiled coaxial cord comprises a conductor surrounded by a layer of dielectric material and a shield surrounding the layer of dielectric material allowing a substantially non- variable impedance characteristic during the relative movement of the coiled coaxial cord.
  • FIG. 1 is a side view of a partially stripped existing coaxial cord.
  • FIG. 2 is a side view of a partially stripped coiled coaxial cord in accordance with the present invention.
  • the coiled coaxial cord 20 preferably comprises, in order, a conductor 30 surrounded by a layer of dielectric material 28. Then, a shielding means (26 and 28) surrounds the layer of dielectric material 28.
  • the shielding means preferably comprises a foil shield layer 26 surrounding the layer of dielectric material 28 and a spiral wound shield 24 having a plurality of wires surrounding the foil shield layer 26.
  • the conductor 30, dielectric material 28, foil shield 26, and spiral wound shield 24 can optionally be covered or protected by a plastic or polymeric jacket or sleeve 22.
  • the jacket 22 is made from an elastomer such as polyvinyl chloride.
  • the conductor 30 is preferably a metal wire such as copper, silver plated copper or tin plated copper.
  • the layer of dielectric material 28 is typically made from TEFLON, made by Du Pont.
  • the foil shield layer 26 is preferably made from an aluminum mylar tape.
  • the spiral wound shield 24 is preferably made of tin plated copper wires.
  • the coiled coaxial cord 20 should allow someone to either twist or longitudinally compress or extend the cord without degrading the overall impedance characteristic of the coaxial cord. In other words, the relative movement of the coiled cord should not affect the performance of the cord.
  • the spiral wound shield 24 and the foil shield 26 allows the relative movement of the cord. Although the spiral wound shield 24 may slightly bind or fray with movement, the combination of the spiral wound shield with the foil shield prevents the degradation of the impedance characteristic of the coaxial cord. What is claimed is:

Landscapes

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

Abstract

Câble coaxial enroulé (20) comprenant un conducteur (30) entouré par une couche de matière diélectrique (28) enveloppée par une couche composée d'une feuille de blindage, elle-même entourée par un blindage enroulé en spirale (24) comportant un ensemble de fils (25).
PCT/US1993/006839 1992-07-27 1993-07-21 Cable coaxial enroule WO1994002948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91941192A 1992-07-27 1992-07-27
US919,411 1992-07-27

Publications (1)

Publication Number Publication Date
WO1994002948A1 true WO1994002948A1 (fr) 1994-02-03

Family

ID=25442030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/006839 WO1994002948A1 (fr) 1992-07-27 1993-07-21 Cable coaxial enroule

Country Status (1)

Country Link
WO (1) WO1994002948A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302962A1 (de) * 2003-01-25 2004-08-05 Nexans Koaxiale Hochfrequenzleitung
WO2014120826A1 (fr) * 2013-01-29 2014-08-07 Tyco Electronics Corporation Câble à blindage peu dense
US9991023B2 (en) 2013-01-29 2018-06-05 Creganna Unlimited Company Interconnect cable having insulated wires with a conductive coating

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274329A (en) * 1964-05-06 1966-09-20 Belden Mfg Co Shielded cords
US3927247A (en) * 1968-10-07 1975-12-16 Belden Corp Shielded coaxial cable
DE2438308A1 (de) * 1974-08-09 1976-02-19 Kabel Metallwerke Ghh Hochspannungskabel mit einem schirm aus mit reversierendem schlag aufgebrachten einzeldraehten
US4157518A (en) * 1977-07-27 1979-06-05 Belden Corporation Leaky coaxial cable having shield layer with uniform gap
EP0034800A1 (fr) * 1980-02-25 1981-09-02 LES CABLES DE LYON Société anonyme dite: Câble pour prospection
US4552989A (en) * 1984-07-24 1985-11-12 National Electric Control Company Miniature coaxial conductor pair and multi-conductor cable incorporating same
US4638114A (en) * 1984-06-19 1987-01-20 Sumitomo Electric Industries, Ltd. Shielded electric wires
US4703134A (en) * 1985-07-23 1987-10-27 Furukawa Electric Co., Ltd. Water impervious rubber or plastic insulated power cable
US4861945A (en) * 1988-12-09 1989-08-29 Precision Interconnect Corporation Yieldably extensible self-retracting shielded cable
US4965412A (en) * 1989-04-06 1990-10-23 W. L. Gore & Associates, Inc. Coaxial electrical cable construction
US4970352A (en) * 1988-03-14 1990-11-13 Sumitomo Electric Industries, Ltd. Multiple core coaxial cable
US5068497A (en) * 1989-09-05 1991-11-26 Abb Kabel Und Draht Gmbh Electrostatic filter cable

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274329A (en) * 1964-05-06 1966-09-20 Belden Mfg Co Shielded cords
US3927247A (en) * 1968-10-07 1975-12-16 Belden Corp Shielded coaxial cable
DE2438308A1 (de) * 1974-08-09 1976-02-19 Kabel Metallwerke Ghh Hochspannungskabel mit einem schirm aus mit reversierendem schlag aufgebrachten einzeldraehten
US4157518A (en) * 1977-07-27 1979-06-05 Belden Corporation Leaky coaxial cable having shield layer with uniform gap
EP0034800A1 (fr) * 1980-02-25 1981-09-02 LES CABLES DE LYON Société anonyme dite: Câble pour prospection
US4638114A (en) * 1984-06-19 1987-01-20 Sumitomo Electric Industries, Ltd. Shielded electric wires
US4552989A (en) * 1984-07-24 1985-11-12 National Electric Control Company Miniature coaxial conductor pair and multi-conductor cable incorporating same
US4703134A (en) * 1985-07-23 1987-10-27 Furukawa Electric Co., Ltd. Water impervious rubber or plastic insulated power cable
US4970352A (en) * 1988-03-14 1990-11-13 Sumitomo Electric Industries, Ltd. Multiple core coaxial cable
US4861945A (en) * 1988-12-09 1989-08-29 Precision Interconnect Corporation Yieldably extensible self-retracting shielded cable
US4965412A (en) * 1989-04-06 1990-10-23 W. L. Gore & Associates, Inc. Coaxial electrical cable construction
US5068497A (en) * 1989-09-05 1991-11-26 Abb Kabel Und Draht Gmbh Electrostatic filter cable

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302962A1 (de) * 2003-01-25 2004-08-05 Nexans Koaxiale Hochfrequenzleitung
WO2014120826A1 (fr) * 2013-01-29 2014-08-07 Tyco Electronics Corporation Câble à blindage peu dense
US9991023B2 (en) 2013-01-29 2018-06-05 Creganna Unlimited Company Interconnect cable having insulated wires with a conductive coating
US10037834B2 (en) 2013-01-29 2018-07-31 Creganna Unlimited Company Cable having a sparse shield

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