EP0643871B1 - Hf cable - Google Patents

Hf cable Download PDF

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Publication number
EP0643871B1
EP0643871B1 EP94908952A EP94908952A EP0643871B1 EP 0643871 B1 EP0643871 B1 EP 0643871B1 EP 94908952 A EP94908952 A EP 94908952A EP 94908952 A EP94908952 A EP 94908952A EP 0643871 B1 EP0643871 B1 EP 0643871B1
Authority
EP
European Patent Office
Prior art keywords
foil
cable
screen wires
copper
electrically conductive
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
EP94908952A
Other languages
German (de)
French (fr)
Other versions
EP0643871A1 (en
Inventor
Hans Joachim Burisch
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.)
Draka Deutschland GmbH and Co KG
Original Assignee
Draka Deutschland GmbH and Co KG
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 Draka Deutschland GmbH and Co KG filed Critical Draka Deutschland GmbH and Co KG
Publication of EP0643871A1 publication Critical patent/EP0643871A1/en
Application granted granted Critical
Publication of EP0643871B1 publication Critical patent/EP0643871B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/105—Screens specially adapted for reducing interference from external sources composed of a longitudinally posed wire-conductor
    • 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
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1016—Screens specially adapted for reducing interference from external sources composed of a longitudinal lapped tape-conductor

Definitions

  • the invention relates to a high-frequency cable according to the Preamble of claim 1.
  • a high frequency or RF cable of this type is e.g. a so-called antenna line for the transmission of corresponding Radio and television signals.
  • this line from an inner conductor, an insulation, an outer conductor and a jacket.
  • the outer conductor which is also called an umbrella works to put together from several layers. From the It is known to practice on a longitudinal, to a closed Pipe shaped metal foil additionally a braid to be applied from individual shield wires. Doing so the shield wires at a regular distance from each other over the Extend the scope of insulation. The wires run on parallel to each other, in two groups that cross each other, and helical around the insulation or the inner conductor. Similar run single braidings or double braidings, so-called false braids.
  • shields or outer conductors are conditional through its relatively slow manufacturing process, such as braiding or spiders, expensive to manufacture. Also are so-called optimized braids required to get a good one Shielding effect over a certain, relatively narrow frequency range to achieve.
  • the invention is based on the endeavor to use a high-frequency cable to be trained so that it can be produced quickly and easily is.
  • the shielding effect is said to be about be effective over a wide frequency range.
  • the invention solves this problem, starting from one Cable according to the preamble of claim 1, by the features in the characterizing part of claim 1.
  • Advantageous further developments are characterized in claims 2 to 3.
  • the Invention is basically in all electrical and optoelectric Cables and wires applicable when on a good shielding effect arrives over a wide frequency range.
  • the new HF cable achieves a surprisingly good shielding effect: Remains in a particularly wide frequency range the shielding effect is practically constantly good. Broadband Faults are therefore better shielded. For example, Effects from the ignition system of an internal combustion engine avoided. Interference emissions through signal transmissions minimized (EMC), which e.g. with a radio telephone in one Motor vehicle is particularly cheap. Furthermore, it is further process new arrangement very well, in particular to contact electrically. In particular, when stripping the film is removed and the longitudinal wires are intact available for contacting. The number, distribution and thickness of the individual wires are depending on the requirements in individual cases, also in relation to the film thickness, vote.
  • the inner conductor 1 is a single wire made of copper with a Diameter of max. 0.26 mm.
  • E-CU F21-V1 is selected according to DIN 40500 T5.
  • the insulation 2 is made of cellular polyethylene with a wall thickness of 1.25 mm (nominal value) and an outer diameter of 2.9 +/- 0.1 mm.
  • the outer conductor (shield) consists of axially parallel to the Inner conductor 1 running shield wires 3, about 18 on the Number. Material and single wire diameter correspond to that Inner conductor 1.
  • the outer conductor (screen) also includes a conductive parallel to the inner conductor 1 Foil 4.
  • Foil 4 consists of an aluminum and PVC layer and is 15 mm wide and 0.05 mm thick.
  • the aluminum layer is facing the shield wires 3 and forms a closed Pipe.
  • a jacket 5 is extruded onto the film 4.
  • Polyvinyl chloride (PVC) is selected as the material.
  • the Wall thickness is 0.5 mm (nominal value), the outside diameter 5.0 +/- 0.2 mm.
  • the jacket is 5 due to the heat of extrusion firmly connected to the PVC layer of film 4.
  • the one described Line serves as an electrical vehicle line, namely as antenna cable for a car radio. It has a temperature resistance (3000 h) from -25 ° C to + 90 ° C. she is easy to connect to the antenna and a connector and has the following electrical characteristics: Capacity: 32 +/- 2 pF / m. Attenuation: greater than 60 dB. Through loss (100MHz): less than 15 dB / 100m.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

In order to ensure that the screening effect of HF cable screening remains effective and constant over a wide frequency range, the invention calls for the screening to consist of aluminium foil (4) shaped to form a tube concentric with the cable and a series of electrically conducting wires (3) which are in electrical contact with the foil (4) and are also concentric with it. An HF cable designed in this way is safe from interfering radiation over a wide frequency band and exhibits a high degree of electromagnetic compatibility. The characteristics of an HF line of this kind make it extremely suitable for use as an antenna line, particularly in vehicles.

Description

Die Erfindung betrifft ein Hochfrequenzkabel nach der Präambel des Anspruchs 1.The invention relates to a high-frequency cable according to the Preamble of claim 1.

Ein Hochfrequenz- oder HF-Kabel dieser Art ist z.B. eine sogenannte Antennenleitung zur Übertragung von entsprechenden Rundfunk- und Fernsehsignalen. In ihrer einfachsten Form besteht diese Leitung aus einem Innenleiter, einer Isolierung, einem Außenleiter und einem Mantel.A high frequency or RF cable of this type is e.g. a so-called antenna line for the transmission of corresponding Radio and television signals. In its simplest form this line from an inner conductor, an insulation, an outer conductor and a jacket.

Es ist bekannt, den Außenleiter, der auch als Schirm wirkt, aus mehreren Schichten zusammenzusetzen. Aus der Praxis ist es bekannt, auf eine längslaufende, zu einem geschlossenen Rohr geformte Metallfolie zusätzlich ein Geflecht aus einzelnen Schirmdrähten aufzubringen. Dabei sollen sich die Schirmdrähte in regelmäßigem Abstand zueinander über den Umfang der Isolierung erstrecken. Die Drähte verlaufen an sich parallel zueinander, in zwei Scharen, die sich kreuzen, und wendelförmig um die Isolierung bzw. den Innenleiter. Ähnlich verlaufen einfache Umspinnungen oder doppelte Umspinnungen, sogenannte Scheingeflechte.It is known the outer conductor, which is also called an umbrella works to put together from several layers. From the It is known to practice on a longitudinal, to a closed Pipe shaped metal foil additionally a braid to be applied from individual shield wires. Doing so the shield wires at a regular distance from each other over the Extend the scope of insulation. The wires run on parallel to each other, in two groups that cross each other, and helical around the insulation or the inner conductor. Similar run single braidings or double braidings, so-called false braids.

Derartige Schirme bzw. Außenleiter sind jedoch, bedingt durch ihr relativ langsames Herstellungsverfahren, wie Flechten oder Spinnen, teuer in der Herstellung. Auch sind sogenannte optimierte Geflechte erforderlich, um eine gute Schirmwirkung über einen bestimmten, relativ engen Frequenzbereich zu erzielen.However, such shields or outer conductors are conditional through its relatively slow manufacturing process, such as braiding or spiders, expensive to manufacture. Also are so-called optimized braids required to get a good one Shielding effect over a certain, relatively narrow frequency range to achieve.

Zur Abschirmung von Audiosignalen längslaufende Schirmdrähte zu verwenden, ist an sich bekannt durch die EP-A-0 169 906, Fig.1. Zur Abschirmung von bioelektrischen Signalen ist die Anordnung von schraubenförmig gewickelten (gewendelten) Schirmdrähten als Kontaktleiter oberhalb eines Abschirmmantels aus elektrisch leitendem Kunststoff bekannt, vergleiche DE-A-26 54 846, Fig.la. Derartige Anordnungen können jedoch die angestrebten Wirkungen nicht erzielen.For shielding audio signals, longitudinal shield wires to use is known per se from EP-A-0 169 906, Fig. 1. For shielding bioelectric signals is the arrangement of helically wound (coiled) shield wires as a contact conductor above a Shielding jacket made of electrically conductive plastic, see DE-A-26 54 846, Fig.la. Such arrangements can however, do not achieve the desired effects.

Aus den Unterlagen des DE-U-19 48 361 ist ein elektrisches Kabel bekannt, bei dem die Abschirmung aus einer Vielzahl paralleler, mit reversierendem Schlag aufgebrachter leitender Schirmdrähte und einer Folie besteht, die an ihrer der Drahtlage zugewandten Seite mit einem Metall versehen ist. Die Herstellung dieses relativ steifen Kabels ist sehr aufwendig, und das Kabel ist nicht als HF-Kabel vorgesehen.From the documents of DE-U-19 48 361 is an electrical Cable known in which the shielding from a A large number of parallel ones, applied with a reversing stroke conductive shield wires and a film that is attached to their Provide the side facing the wire layer with a metal is. The manufacture of this relatively stiff cable is very complex, and the cable is not intended as an RF cable.

Aus der US-A-3,896,261 ist ein Koaxialkabel mit einem Außenleiter bekannt, der eine längslaufende elektrisch leitende Folie aufweist, welche eine Isolation eines zentralen Drahtes und einen gewellten Draht umschließt, der schlagfrei über die Länge des Kabels verläuft. Die Wellung des Drahtes dient seiner Fixierung innerhalb des Kabels und einer Erleichterung eines Anschlusses.From US-A-3,896,261 is a coaxial cable with a Outer conductor is known which is a longitudinal electrically conductive Has a film that isolates a central Wire and a corrugated wire, which is shock-free runs the length of the cable. The curl of the wire serves to fix it within the cable and to facilitate it a connection.

Der Erfindung liegt das Bestreben zugrunde, ein Hochfrequenzkabel so auszubilden, daß es schnell und einfach herstellbar ist. Darüber hinaus soll die Schirmwirkung über einen breiten Frequenzbereich wirksam sein.The invention is based on the endeavor to use a high-frequency cable to be trained so that it can be produced quickly and easily is. In addition, the shielding effect is said to be about be effective over a wide frequency range.

Die Erfindung löst diese Aufgabe, ausgehend von einem Kabel nach der Präambel des Anspruchs 1, durch die Merkmale im kennzeichnenden Teil des Anspruchs 1. Vorteilhafte Weiterbildungen sind in den Ansprüchen 2 bis 3 gekennzeichnet. Die Erfindung ist grundsätzlich bei allen elektrischen und optoelektrischen Kabeln und Leitungen anwendbar, wenn es auf eine gute Schirmwirkung über einen breiten Frequenzbereich ankommt.The invention solves this problem, starting from one Cable according to the preamble of claim 1, by the features in the characterizing part of claim 1. Advantageous further developments are characterized in claims 2 to 3. The Invention is basically in all electrical and optoelectric Cables and wires applicable when on a good shielding effect arrives over a wide frequency range.

Das neue HF-Kabel erzielt eine überraschend gute Schirmwirkung: In einem besonders breiten Frequenzbereich bleibt die Schirmwirkung praktisch konstant gut. Breitbandige Störungen werden somit besser abgeschirmt. So werden z.B. Einwirkungen durch die Zündanlage einer Brennkraftmaschine vermieden. Störaussendungen durch Signalübertragungen werden minimiert (EMV), was z.B. bei einem Funktelefon in einem Kraftfahrzeug besonders günstig ist. Des weiteren ist die neue Anordnung sehr gut weiterzuverarbeiten, insbesondere elektrisch zu kontaktieren. Insbesondere kann beim Abmanteln die Folie mitentfernt werden, und die Längsdrähte stehen unversehrt zur Kontaktierung zur Verfügung. Die Anzahl, Verteilung und Dicke der Einzeldrähte sind je nach den Anforderungen im Einzelfall, auch in Bezug auf die Foliendicke, abzustimmen.The new HF cable achieves a surprisingly good shielding effect: Remains in a particularly wide frequency range the shielding effect is practically constantly good. Broadband Faults are therefore better shielded. For example, Effects from the ignition system of an internal combustion engine avoided. Interference emissions through signal transmissions minimized (EMC), which e.g. with a radio telephone in one Motor vehicle is particularly cheap. Furthermore, it is further process new arrangement very well, in particular to contact electrically. In particular, when stripping the film is removed and the longitudinal wires are intact available for contacting. The number, distribution and thickness of the individual wires are depending on the requirements in individual cases, also in relation to the film thickness, vote.

In der einzigen Fig. der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das im nachfolgenden näher beschrieben wird.In the single Fig. Of the drawing is an embodiment of the invention shown below is described in more detail.

Der Innenleiter 1 ist als Einzeldraht aus Kupfer mit einem Durchmesser von max. 0,26 mm ausgebildet. Als Werkstoff ist E-CU F21-V1 nach DIN 40500 T5 gewählt. Die Isolierung 2 besteht aus verzelltem Polyethylen, mit einer Wanddicke von 1,25 mm (Nennwert) und einem Außendurchmesser von 2,9 +/- 0,1 mm. Der Außenleiter (Schirm) besteht aus achsparallel zum Innenleiter 1 verlaufenden Schirmdrähten 3, ca. 18 an der Zahl. Werkstoff und Einzeldrahtdurchmesser entsprechen dem Innenleiter 1. Der Außenleiter (Schirm) umfaßt des weiteren eine achsparallel zum Innenleiter 1 verlaufende leitende Folie 4. Die Folie 4 besteht aus einer Aluminium- und PVC-Schicht und ist 15 mm breit und 0,05 mm dick. Die Aluminiumschicht ist den Schirmdrähten 3 zugewandt und bildet ein geschlossenes Rohr. Auf die Folie 4 ist ein Mantel 5 aufextrudiert. Als Werkstoff ist Polyvinylchlorid (PVC) gewählt. Die Wanddicke beträgt 0,5 mm (Nennwert), der Außendurchmesser 5,0 +/- 0,2 mm. Durch die Extrusionswärme ist der Mantel 5 fest mit der PVC-Schicht der Folie 4 verbunden. Die beschriebene Leitung dient als elektrische Fahrzeugleitung, und zwar als Antennenleitung für ein Autoradio. Sie weist ein Temperaturbeständigkeit (3000 h) von -25° C bis + 90° C auf. Sie ist gut mit der Antenne und mit einem Anschlußstecker verbindbar und weist folgende elektrische Kennwerte auf: Kapazität: 32 +/- 2 pF/m. Schirmdämpfung: größer als 60 dB. Durchgangsdämpfung (100MHz): kleiner als 15 dB/100m.The inner conductor 1 is a single wire made of copper with a Diameter of max. 0.26 mm. As a material E-CU F21-V1 is selected according to DIN 40500 T5. The insulation 2 is made of cellular polyethylene with a wall thickness of 1.25 mm (nominal value) and an outer diameter of 2.9 +/- 0.1 mm. The outer conductor (shield) consists of axially parallel to the Inner conductor 1 running shield wires 3, about 18 on the Number. Material and single wire diameter correspond to that Inner conductor 1. The outer conductor (screen) also includes a conductive parallel to the inner conductor 1 Foil 4. Foil 4 consists of an aluminum and PVC layer and is 15 mm wide and 0.05 mm thick. The aluminum layer is facing the shield wires 3 and forms a closed Pipe. A jacket 5 is extruded onto the film 4. Polyvinyl chloride (PVC) is selected as the material. The Wall thickness is 0.5 mm (nominal value), the outside diameter 5.0 +/- 0.2 mm. The jacket is 5 due to the heat of extrusion firmly connected to the PVC layer of film 4. The one described Line serves as an electrical vehicle line, namely as antenna cable for a car radio. It has a temperature resistance (3000 h) from -25 ° C to + 90 ° C. she is easy to connect to the antenna and a connector and has the following electrical characteristics: Capacity: 32 +/- 2 pF / m. Attenuation: greater than 60 dB. Through loss (100MHz): less than 15 dB / 100m.

Claims (3)

  1. High frequency cable or lead, especially coaxial cable, comprising a high frequency screen and an outer conductor of a lengthwise extending, electrically conductive foil (4) and of a series of electrically conductive screen wires connected in electrically conductive manner to the foil, extending parallel to one another, and arranged around the periphery of the foil (4) which is formed into a tube,
    characterised in that
    the screen wires (3) extending parallel to one another run substantially parallel to the axis, with the deviation from the axis being no more than 5°,
    the screen wires (3) are distributed with at least approximately equidistant spacing around the periphery of the foil (4),
    the screen wires (3) are arranged within the foil (4),
    the optical covering due to the screen wires (3) is 10 to 80%, preferably 20 to 40%,
    the foil (4) is a metallised plastics foil,
    the plastics layer of the foil (4) is arranged on the outside, over which is extruded a sleeve (5) of the same or similar plastics material and the foil (4) is connected intimately to the sleeve (5) by extrusion heat.
  2. Cable according to claim 1, characterised in that the metal is aluminium, an aluminium alloy, copper or a copper alloy.
  3. Cable according to one of claims 1 or 2, characterised in that the screen wires (3) are of copper, a copper alloy or silvered copper.
EP94908952A 1993-04-01 1994-03-09 Hf cable Expired - Lifetime EP0643871B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4310662A DE4310662C2 (en) 1993-04-01 1993-04-01 Radio frequency cable
DE4310662 1993-04-01
PCT/DE1994/000242 WO1994023434A1 (en) 1993-04-01 1994-03-09 Hf cable

Publications (2)

Publication Number Publication Date
EP0643871A1 EP0643871A1 (en) 1995-03-22
EP0643871B1 true EP0643871B1 (en) 1998-05-20

Family

ID=6484442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94908952A Expired - Lifetime EP0643871B1 (en) 1993-04-01 1994-03-09 Hf cable

Country Status (5)

Country Link
US (1) US5739471A (en)
EP (1) EP0643871B1 (en)
DE (2) DE4310662C2 (en)
ES (1) ES2115939T3 (en)
WO (1) WO1994023434A1 (en)

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JP4000729B2 (en) * 1999-12-15 2007-10-31 日立電線株式会社 Coaxial cable and manufacturing method thereof
NO319061B1 (en) * 2003-05-15 2005-06-13 Nexans Lead-free electrical cable with high specific weight
US7255602B1 (en) 2006-11-02 2007-08-14 Hamilton Sundstrand Corporation Shielding for electrical cable assemblies
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JP4832384B2 (en) * 2007-08-29 2011-12-07 矢崎総業株式会社 Antenna connection structure and antenna connection method
JP5351642B2 (en) * 2009-02-27 2013-11-27 日立電線株式会社 cable
DE102009011479A1 (en) * 2009-03-06 2010-09-09 Olympus Winter & Ibe Gmbh Surgical instrument
US8866017B2 (en) * 2011-03-04 2014-10-21 Junkosha, Inc. Transmission cable
JP2013236416A (en) * 2012-05-02 2013-11-21 Yazaki Corp Coaxial cable with terminal and manufacturing method therefor
WO2016002812A1 (en) * 2014-06-30 2016-01-07 矢崎総業株式会社 Multiple-circuit cable
US9691514B2 (en) * 2015-01-22 2017-06-27 Delphi Technologies, Inc. Electrical assembly having a fibrous conductive interface between a conductive composite component and a metallic component
JP7140074B2 (en) * 2019-08-27 2022-09-21 日立金属株式会社 coaxial cable
US20230154652A1 (en) * 2020-04-03 2023-05-18 Totoku Electric Co., Ltd. Coaxial cable

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Also Published As

Publication number Publication date
WO1994023434A1 (en) 1994-10-13
DE4310662A1 (en) 1994-10-06
US5739471A (en) 1998-04-14
ES2115939T3 (en) 1998-07-01
DE4310662C2 (en) 1995-04-06
EP0643871A1 (en) 1995-03-22
DE59405999D1 (en) 1998-06-25

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