EP3176877B1 - Connecteur de câble de radiofréquence - Google Patents

Connecteur de câble de radiofréquence Download PDF

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Publication number
EP3176877B1
EP3176877B1 EP15306911.7A EP15306911A EP3176877B1 EP 3176877 B1 EP3176877 B1 EP 3176877B1 EP 15306911 A EP15306911 A EP 15306911A EP 3176877 B1 EP3176877 B1 EP 3176877B1
Authority
EP
European Patent Office
Prior art keywords
coaxial cable
shield
cable
pressing
coaxial
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.)
Active
Application number
EP15306911.7A
Other languages
German (de)
English (en)
Other versions
EP3176877A1 (fr
Inventor
Jean-Pierre Harel
Eric CALLEC
Patrick Le Cam
Thomas Julien
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.)
Nokia Shanghai Bell Co Ltd
Original Assignee
Alcatel Lucent Shanghai Bell Co Ltd
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 Alcatel Lucent Shanghai Bell Co Ltd filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to EP15306911.7A priority Critical patent/EP3176877B1/fr
Publication of EP3176877A1 publication Critical patent/EP3176877A1/fr
Application granted granted Critical
Publication of EP3176877B1 publication Critical patent/EP3176877B1/fr
Active legal-status Critical Current
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0503Connection between two cable ends
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02Soldered or welded connections
    • H01R4/021Soldered or welded connections between two or more cables or wires
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515Connection to a rigid planar substrate, e.g. printed circuit board
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0521Connection to outer conductor by action of a nut

Definitions

  • the present invention generally relates to the manufacturing of radiofrequency (RF) equipment, in particular wireless base stations.
  • a base station antenna - as lot of other radiofrequency devices - comprises several radiofrequency subcomponents such as radiating elements, feeding networks, filters, etc, connected altogether. More peculiarly, the invention concerns the connection of two coaxial cables.
  • Performing a pre-test means characterizing all the subcomponents as regards their radiofrequency performances (such as insertion losses, impedance matching, etc) and as regards their intermodulation performances. This is done by temporarily connecting each subcomponent to at least one test bench. For saving time, the subcomponent must be quickly connected and disconnected.
  • a trivial solution consists in attaching a coaxial RF connector at each input and output of the RF subcomponents to be pre-tested, or attaching a coaxial cable terminated by a coaxial RF connector. Then each subcomponent can then be used as a "standalone device", i. e. can be quickly connected to one or several test benches, and quickly disconnected after the pre-test. After the pre-test, the coaxial connector can be used for a permanent connection to a wider subcomponent or inside the final product.
  • the coaxial connectors can be considered as costly and somewhat fragile.
  • FR 2082842 A5 discloses the preamble of claim 1.
  • the aim of the present invention is to provide a better connection solution for two coaxial RF cables.
  • the object of the invention is an assembly according to claim 1.
  • the stable opening position of the pressing means of the connector comprised by the assembly provides a broad space between the pressing part and the conductive ground block, so that it is possible to quickly introduce the bare shield of the first coaxial cable between the pressing part and the conductive ground block. Then the closing position quickly provides a good contact between the shield and the ground block. Conversely, the opening position provides a broad space between the pressing part and the conductive ground block, so that it is possible to quickly release the bare shield of the first coaxial cable, and then quickly draw the first cable out of the connector without any risk to damage the shield or the connector.
  • each coaxial cable comprises two coaxial conductors: an outer shield and an inner conductor, separated by a dielectric layer.
  • the dielectric layer is surrounded by the shield.
  • the shield is surrounded by an overall dielectric protection layer.
  • the shield is often constituted by a braid.
  • a connection between the two coaxial cables implies a connection from shield to shield, and a connection from inner conductor to inner conductor.
  • a first coaxial cable, connected to a subcomponent comprises:
  • a second coaxial cable, connected to a pre-test comprises:
  • the connector may be permanently fixed to the second coaxial cable, whereas it must be quickly connected and disconnected from the first cable, to temporarily enable the pre-test of a subcomponent.
  • Figure 1 represents an example not according to the invention. It permits to avoid any "permanent" contact onto the shields, such as solders, crimps, wrappings, etc.
  • solders As concerns the inner conductors, a compromise is done in this first embodiment, considering that soldering only the inner conductors altogether may represent a valid option: The inner conductor is often made from a unique wire, and so a limited number of unsoldering and re-soldering operations sounds feasible without drastically increasing the risks to reduce RF intermodulation performances.
  • This example comprises:
  • the fastener F1 is laced in an opening position that provides a broad space between the pressing part PP1 and the conductive ground block GB1, so that it is possible to quickly introduce the bare shield S1 of the first coaxial cable between the pressing part PP1 and the conductive ground block GB1.
  • An operator places the first coaxial cable thru the cable guide CG1, and then activates the fastener F1 to apply a proper force onto the bare shield S1 via the pressing part PP1. Then the operator solders the bare inner conductors IC1 and IC2 together. At this moment the RF connection is available and so the RF or intermodulation pre-tests can be performed.
  • a closing position quickly provides a good contact between the shield S1 and the ground block GB1.
  • the opening position provides a broad space between the pressing part PP1 and the conductive ground block GB1.
  • the operator unsolders the inner conductors IC1 and IC2 and then releases the fastener F1.
  • Figure 2 represents an assembly according to the invention.
  • the cables are guided by same cable guides CG1, CG2 as in the first embodiment, and the shields S1 and S2 are electrically connected by same means as in the first embodiment: Grounding block GB1, pressing part PP1, fastener F1, grounding blocks GB2a, GB2b, and bolts B1, B2.
  • connecting means between the bare ends of the inner conductors IC1, and IC2.
  • These connecting means comprise an insulating block IB fixed on the base plane BP and supporting a conductive strip CS parallel to the base plane BP. In collaboration with the metal base plane BP, they constitute a microstrip transmission line linking the two coaxial cables.
  • the bare inner conductor IC2 of the second cable is permanently soldered to an end of this conductive strip CS.
  • the bare inner conductor IC1 of the first cable can be pressed against the other end of the conductive strip CS, by a second insulating pressing part PP2.
  • a second fastener F2 applies can apply a defined force on the insulating pressing part PP2.
  • This second fastener F2 has two stable positions that can be chosen by a quick and simple manual (or automatic) operation.
  • an opening position provides a broad space between the pressing part PP2 and the conductive strip CS, so that it is possible to quickly introduce the bare inner conductor IC1 of the first coaxial cable between the pressing part PP2 and the conductive strip CS.
  • a closing position applies a controlled force onto the pressing part PP2, so that the bare inner conductor IC1 of the first coaxial cable is clamped and has a good electrical contact with an end of the conductive strip CS.
  • the opening position provides a broad space between the pressing part PP2 and the conductive strip CS, so that it is possible to quickly release the bare inner conductor IC1 of the first coaxial cable, and then quickly draw the first cable out of the connector without any risk to damage the inner conductor IC1 or the connector.
  • the fastener F2 is a mechanical device that can block or release the inner conductor IC1 of the first cable by a quick and simple manual (or automatic) operation. Its manufacturing is within the scope of a man skilled in the art.
  • the function of the microstrip line constituted by the conductive strip CS and the metal base plane BP is impedance matching at the junctions with the two cables.
  • the geometrical characteristics of the conducting strip CS and of the insulating block IB, as well as the dielectric characteristics of this latter, are chosen such that the impedance of the microstrip line is identical to the impedances of the two cables (These impedances are identical). So it is possible to perform accurate impedance measurements, scattering parameter measurements, etc, as well as intermodulation measurements.
  • the first coaxial cable can be easily installed and removed.
  • the solder SD2 can be replaced by a pressing part similar to the pressing part PP2, and a fastener similar to the fastener F2.
  • the ground blocks GB2a, GB2b and the bolts B1, B2 can be replaced by a ground block similar to the ground block GB1, a pressing part similar to the pressing part PP1, and a fastener similar to the fastener F1.
  • the connector is symmetrical, and both coaxial cables can be easily installed and removed.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (1)

  1. Ensemble comprenant un connecteur de câble radiofréquence connectant un premier câble coaxial à un second câble coaxial,
    le premier câble coaxial ayant une première enveloppe isolante externe (J1), un premier blindage conducteur (S1) partiellement couvert par la première enveloppe isolante externe (J1), une première couche diélectrique (DL1), et un premier conducteur interne (IC1) partiellement couvert par la première couche diélectrique (DL1) ; et
    le second câble coaxial ayant une seconde enveloppe isolante externe (J2), un second blindage conducteur (S2) partiellement couvert par la seconde enveloppe isolante externe (J2), une seconde couche diélectrique (DL2), et un second conducteur interne (IC2) partiellement couvert par la seconde couche diélectrique (DL2) ;
    ledit connecteur de câble radiofréquence comprenant en outre :
    - un moyen permettant de connecter électriquement les conducteurs internes (IC1, IC2) des deux câbles coaxiaux ;
    - un moyen permettant de connecter électriquement les blindages (S1, S2) des deux câbles coaxiaux, comprenant :
    -- un bloc de masse conducteur (GB1) conçu pour recevoir une partie dénudée du premier blindage (S1) du premier câble et pour être en contact électrique, par l'intermédiaire d'une plaque de base métallique (BP), avec le second blindage (S2) du second câble coaxial ;
    -- et un moyen de pression (PP1, F1) permettant de presser la partie dénudée du premier blindage (S1) du premier câble contre le bloc de masse conducteur (GB1) ;
    ledit moyen de pression comprenant une partie de pression (PP1) et une attache (F1) qui peut être réglée dans une position fermée pour presser la partie dénudée du premier blindage (S1) du premier câble coaxial contre le bloc de masse conducteur (GB1), et peut être réglée dans une position ouverte permettant un mouvement de la partie dénudée du premier blindage (S1) du premier câble coaxial entre la partie de pression (PP1) et le bloc de masse conducteur (GB1),
    l'ensemble comprenant en outre un moyen de guidage (CG2) et un moyen de fixation (GB2) permettant de maintenir le second câble coaxial dans une position telle que les deux câbles sont alignés, et
    - un plan de masse (BP) qui est la plaque de base métallique (BP),
    caractérisé par
    - une bande conductrice (CS),
    - un bloc isolant (IB) placé entre le plan de masse (BP) et la bande conductrice (CS), de sorte qu'ils constituent une ligne de microbande,
    - un moyen (SD2) permettant de connecter électriquement une première extrémité de la bande conductrice (CS) au conducteur interne (IC2) du second câble coaxial ;
    - une seconde attache (F2) associée à une partie de pression diélectrique (PP2) qui peut être réglée alternativement dans une position de pression stable, et dans une position d'ouverture stable, la position ouverte permettant d'introduire le conducteur interne dénudé (IC1) du premier câble coaxial entre la partie de pression diélectrique (PP2) et la seconde extrémité de la bande conductrice (CS), et la position de pression amenant la partie de pression diélectrique (PP2) à presser le conducteur interne (IC1) du premier câble coaxial sur la seconde extrémité de la bande conductrice (CS).
EP15306911.7A 2015-12-02 2015-12-02 Connecteur de câble de radiofréquence Active EP3176877B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15306911.7A EP3176877B1 (fr) 2015-12-02 2015-12-02 Connecteur de câble de radiofréquence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15306911.7A EP3176877B1 (fr) 2015-12-02 2015-12-02 Connecteur de câble de radiofréquence

Publications (2)

Publication Number Publication Date
EP3176877A1 EP3176877A1 (fr) 2017-06-07
EP3176877B1 true EP3176877B1 (fr) 2023-08-23

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Application Number Title Priority Date Filing Date
EP15306911.7A Active EP3176877B1 (fr) 2015-12-02 2015-12-02 Connecteur de câble de radiofréquence

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115070155B (zh) * 2022-08-24 2022-11-01 北京金锐世纪高科技有限公司 一种射频电缆快速焊接装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082842A5 (fr) * 1970-03-27 1971-12-10 Boulore Christian
JPS5461289U (fr) * 1977-10-06 1979-04-27
JPS54168591U (fr) * 1978-05-18 1979-11-28
DE20004019U1 (de) * 2000-02-02 2001-06-21 Weidmüller Interface GmbH & Co, 32760 Detmold Anschlußelement für Kabelschirme an Montagegestelle, insbesondere Montageschienen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6932639B2 (en) * 2003-07-15 2005-08-23 George Woodruff Electroluminescent cable connector
JP5365389B2 (ja) * 2009-07-21 2013-12-11 住友電気工業株式会社 同軸ケーブルハーネス
US8365404B2 (en) * 2010-11-22 2013-02-05 Andrew Llc Method for ultrasonic welding a coaxial cable to a coaxial connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2082842A5 (fr) * 1970-03-27 1971-12-10 Boulore Christian
JPS5461289U (fr) * 1977-10-06 1979-04-27
JPS54168591U (fr) * 1978-05-18 1979-11-28
DE20004019U1 (de) * 2000-02-02 2001-06-21 Weidmüller Interface GmbH & Co, 32760 Detmold Anschlußelement für Kabelschirme an Montagegestelle, insbesondere Montageschienen

Also Published As

Publication number Publication date
EP3176877A1 (fr) 2017-06-07

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