EP2572406B1 - Antenna interface for a radio receiver - Google Patents

Antenna interface for a radio receiver Download PDF

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Publication number
EP2572406B1
EP2572406B1 EP11727249.2A EP11727249A EP2572406B1 EP 2572406 B1 EP2572406 B1 EP 2572406B1 EP 11727249 A EP11727249 A EP 11727249A EP 2572406 B1 EP2572406 B1 EP 2572406B1
Authority
EP
European Patent Office
Prior art keywords
plug
socket
core
piston
antenna
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
EP11727249.2A
Other languages
German (de)
French (fr)
Other versions
EP2572406A1 (en
Inventor
Christian Le Tortorec
Xavier Retailleau
Mathieu Deffois
Anne Barbet
Josef Gramsamer
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.)
Thales SA
Original Assignee
Thales SA
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Filing date
Publication date
Application filed by Thales SA filed Critical Thales SA
Publication of EP2572406A1 publication Critical patent/EP2572406A1/en
Application granted granted Critical
Publication of EP2572406B1 publication Critical patent/EP2572406B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6473—Impedance matching
    • H01R13/6474—Impedance matching by variation of conductive properties, e.g. by dimension variations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/52—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted in or to a panel or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/02—Connectors or connections adapted for particular applications for antennas

Definitions

  • the present invention relates to an antenna interface for a radiofrequency station.
  • an antenna interface for a radio frequency station of the type comprising a base, intended to be connected to the station, and a plug, intended to be connected to the antenna, are already known.
  • GB 2,423,649 describes an interface similar to that defined in the preamble of claim 1.
  • Such an interface is usually used for a single-band station, that is to say a station capable of transmitting and / or receiving on a single frequency band.
  • the invention aims in particular to overcome this disadvantage, by allowing the antenna connection to a dual-band station, while limiting the size of the connection means.
  • the subject of the invention is in particular an antenna interface for a radio frequency station according to claim 1.
  • the interface according to the invention has two hot spots (formed by the contactors, to which the cable cores are connected), and a ground reference (formed by the body of the plug, to which the braids of the cables are connected).
  • this interface makes it possible to work on two distinct frequencies, for transmitting and / or receiving the station on these two frequency bands.
  • the interface according to the invention is therefore particularly suitable for the antenna connection to a dual-band station.
  • the antenna connection to the dual-band station is achieved by means of a single interface.
  • a single interface is less cumbersome and expensive than the two interfaces required in the state of the art.
  • the invention allows the use of a single collinear antenna, which allows the transmission and / or reception of the station on the two frequency bands simultaneously, which is not possible in the state of the art.
  • the use of two bases involves the use of two respective antennas, each transmitting in a frequency band, each antenna may interfere with the signal of the other antenna.
  • the interface according to the invention is suitable for use in an aggressive environment, for example in a humid environment.
  • the membrane provides a sealing function, including protecting connectors and cables against moisture.
  • an antenna interface 8 according to an exemplary embodiment of the invention.
  • Such an interface 8 is intended in particular to equip a radio frequency station, for example a two-band tactical radio station, for connecting a two-band antenna.
  • the interface 8 comprises a base 10, in particular represented on the Figures 2 to 4 , and a card 12, in particular represented on the Figures 5 to 7 , intended to cooperate with the base 10 so as to form the interface 8 as shown in FIG. figure 1 .
  • the base 10 comprises a body 11 of generally circular shape about an axis X.
  • This body 11 comprises a first portion 14 and a second portion 16, substantially cylindrical, and a collar 18 separating axially the first 14 and second 16 parts.
  • the first portion 14 has a threaded outer surface, to be screwed into a threaded complementary orifice of the radiofrequency station (not shown).
  • the flange 18 then forms in particular an end stop for this screwing.
  • the threaded outer surface forms fastening means at the radiofrequency station that are particularly compact, have a reduced axial size, and are sufficiently robust.
  • a seal 20, visible on the figure 3 is carried by the flange 18.
  • Such a seal 20 is intended to cooperate with a contour of the complementary orifice of the station, to ensure the tightness of the station.
  • the first portion 14 could include any other means of attachment to the radiofrequency station.
  • this first portion 14 could be threaded only on an area to be screwed into a lock nut.
  • the first portion 14 may also not be threaded, but intended to be forced into a complementary hole of the station.
  • the second portion 16 also has a threaded outer surface. Preferably, this second portion 16 has a diameter greater than a diameter of the first portion 14.
  • the diameter of the base 10, in particular the diameter of the flange 18, is less than 2 cm.
  • the base 10 is less bulky than a base of a conventional interface.
  • the second part 16 comprises an axial cavity 21 delimited axially by a bottom wall 21A.
  • the base 10 also comprises at least two separate coaxial cables 22, intended to be connected to a radio card of the station. Thus, this base allows direct mechanical interfacing with this radio card.
  • each coaxial cable 22 comprises a central conductive core 22A, surrounded by an electrical insulating material 22B, itself surrounded by a conductive braid 22C, disposed coaxially with the core.
  • the braid 22C is finally wrapped with an insulating sheath 22D, preferably fixed to the base 10.
  • Each cable 22 has a first end, extends axially out of the base 10, beyond the first portion 14, and having a conventional connector (not shown) intended to be connected to the radio card of the station.
  • Each cable 22 also has a second end, opposite the first, extending through the base 10, to the bottom wall 21A.
  • each cable 22 is connected to the base 10 by means of a connecting element 23, described with reference to FIG. figure 1 .
  • the connecting element 23 comprises a first sleeve-shaped conductor portion 23A intended to cooperate with the braid 22C of a respective cable 22, this first portion 23A being housed without play in a through-orifice 24 of the body 11 of the base 10.
  • the braid 22C is electrically connected to the body 11 via this first portion 23A of the connection element 23.
  • connection element 23 further includes a second conductive portion 23B, intended to cooperate with the core 22A of the corresponding cable 22.
  • the core 22A is inserted into a longitudinal hole of the second portion 23B.
  • the second portion 23B comprises a contact plate 25.
  • connection element 23 finally comprises an electrical insulator 23C, radially interposed between the first 23A and second 23B conductive parts to electrically isolate them relative to each other.
  • sealing O-rings 26A, 26B are interposed radially between the first conducting portion 23A and the insulator 23C, and between the insulator 23C and the second conducting portion 23B respectively.
  • the bottom wall 21A has at least two orifices 21B, through which the contact plates 25 are respectively accessible.
  • Card 12 shown in more detail on the Figures 5 to 7 , also has a general shape of revolution about an axis X ', and comprises a body 27 and a wheel 28 free to rotate about the axis X' relative to the body 27.
  • the body 27 carries on its outer surface 30 connection means on an antenna, including a conventional collinear type antenna.
  • connection means 30 comprise for example two pairs 31 of fastening fingers 31A, the pairs 31 being arranged diametrically opposite one another.
  • the fixing fingers 31A of each pair 31 are spaced relative to each other, adapted to receive a printed circuit of the collinear antenna between these fingers 31A.
  • the fixing fingers 31A are adapted to allow the soldering of the printed circuit on these fingers 31A. Indeed, the welding allows a robust attachment and electrically conductive.
  • the fixing fingers 31A are integral with the body 27 of the plug 12.
  • these fingers 31A could be attached to the body 27, especially in the case where the material in which the fingers 31A are made is more adapted for welding that the material in which the body 27 is made.
  • the body 27 carries an O-ring seal 29 and a collar 30.
  • the body 27 is adapted to receive a sleeve of the antenna, the body 27 being fitted in this sleeve to the collar 32, the seal 29 then cooperating with the sleeve.
  • the wheel 28 forms a sleeve of generally hollow cylindrical shape, delimiting a housing 33, internally threaded wall complementary to the second threaded portion 16 of the base 10.
  • the connection of the base 10 with the plug 12 is realized by inserting the second threaded portion 16 in the threaded housing 33, then by rotating the wheel 28, so as to screw the wheel 28 on the second portion 16, until the bottom wall 21A of the base 10 cooperates with a limit stop 33A provided in the housing 33.
  • a seal 34 is arranged in the housing 33, between the inner wall of the housing 33 and the body 27, in order to seal the connection between the base 10 and the plug 12.
  • the plug 12 also comprises at least two contactors 36, carried by the body 27 of this plug 12.
  • each contactor 36 cooperates with the plate 25 connected to the core 22A of a respective cable 22, accessible through the respective orifice 21B of the bottom wall 21A.
  • the braids 22C of the cables 22 cooperate with the body 27 of the plug 12, through the body 11 of the base.
  • the contactors 36 form two hot spots of the antenna, while the body 27 of the plug 12 forms the reference mass.
  • the base 10 and the plug 12 comprise complementary polarizing means, intended to ensure that each switch 36 cooperates with the respective plate 25 when the plug 12 and the base 10 are connected together.
  • the means 35 comprise a projection 35A carried by the plug 12 (visible on the figure 7 ), and a complementary cavity 35B formed in the bottom wall 21A of the base 10 (visible on the figure 4 ).
  • the projection 35A is protected by the wheel 28, whose height prevents easy access to this projection 35A to elements likely to deteriorate.
  • the projection could alternatively be carried by the base 10, and the complementary cavity formed in the plug 12. It could also provide other polarizing means.
  • At least one contactor 36 is a piston contactor, comprising a fixed part 37, and a portion 38 movable relative to the fixed part 37, and an elastic member 39, for example a spring, arranged between the fixed portion 37 and the movable portion 38 to return the movable portion 38 to a rest position.
  • an elastic member 39 for example a spring
  • the fixed part 37 comprises a hollow cylindrical element 37A, electrically insulating, forming a piston body in which the movable portion 38 is intended to move axially.
  • the stationary portion 37 also includes a conductive longitudinal member 37B, extending longitudinally between a first end, forming a first seat for the resilient member 39, and a second end, extending out of the body 27, to be connected to the circuit board of the antenna.
  • the body 27 carries insulating annular support members 44, each insulating annular element 44 carrying the second end of a respective conductive longitudinal member 37A.
  • These annular elements 44 are intended to maintain the second ends in precise positioning, to ensure the proper connection of these second ends with the printed circuit of the antenna.
  • these annular elements 44, maintaining the second ends contribute to the good strength of the plug 12.
  • these annular insulating elements 44 are made of TeflonĀ®.
  • the mobile part 38 comprises a thrust member 40, forming a second seat of the elastic member 39, and a contact element 41, intended to cooperate with a respective plate 25 when the base 10 is connected with the plug 12.
  • the contact element 41 has a first guide portion 41A, and a second contact portion 41B.
  • the first portion 41A has a generally cylindrical shape, of diameter substantially equal to an inner diameter of the hollow cylindrical member 37A piston body, to cooperate without play with an inner wall of the hollow cylindrical member 37A.
  • this first portion 41A is capable of axially guiding the movable portion 38 as it slides in the hollow cylindrical member 37A, ensuring that this movable portion 38 does not shift radially. This ensures in particular a good alignment between the thrust member 40 and the contact element 41.
  • the first portion 41A has a surface, preferably flat, cooperating with the thrust member 40.
  • the thrust member 40 has a head 40A, intended to cooperate with this flat surface.
  • the head 40A has a generally rounded shape, to ensure an optimal contact with the flat surface of the first portion 41A.
  • the second contact portion 41B forms a head of the contact element 41, intended to cooperate with a respective plate 25 when the base 10 is connected with the plug 12.
  • the second contact portion 41B has a generally rounded shape , in order to ensure an optimal contact with the plate 25.
  • the plug 12 further comprises a sealing membrane 42, fixed to the body 27 by means of a fixing washer 43.
  • the sealing membrane 42 has two through orifices, through which passes a respective contact element 41.
  • the first portion 41A of a contact element 41 is disposed on one side of the membrane 42
  • the second contact portion 41B is disposed on the other side of the membrane 42, so as to be accessible on contact a plate 25, the first 41A and second 41B parts being connected by a connecting portion 41C of diameter substantially equal to that of the corresponding orifice.
  • the membrane 42 is relatively flexible, to allow movement of the movable portion 38.
  • the membrane 42 is made of elastomer, preferably fluorinated silicone.
  • the fixing washer 43 extends axially beyond the membrane 42, so as to bear the end stop 33A.
  • This free space 46 allows in particular a free deformation of the membrane 42, so as not to block the possible displacements of the moving parts 38.
  • Such a piston contactor 36 can adapt simply and effectively to its environment, because the position of the movable portion 38 is variable.
  • the piston contactors allow a flexible and simple attachment of the base 10 with the plug 12, for example catching games or misalignment.
  • Such Piston contactors 36 are particularly compact, which makes it possible to produce an interface of reduced dimensions.
  • the interface according to the invention notably allows the radio to transmit and / or receive in two bands simultaneously.
  • each piston contactor is dimensioned so as to minimize the coupling between the two bands, so that the signal on one channel does not disturb the signal on the other channel.
  • each piston contactor is dimensioned so as to minimize crosstalk (called "cross talk" in English, ie the unwanted and untimely superposition of one signal on another) between signals. through these piston contactors, preferably for crosstalk less than 45dB.
  • the inner and outer diameters of the insulating element 37A are then generally determined by means of simulations making it possible to estimate optimal values.
  • the ratio of the diameter of the membrane 42 to the diameter of a second contact portion 41B is also estimated so as to optimize the decoupling between the two channels.
  • the interface according to the invention has an optimum seal, and has good robustness. Such an interface could in particular be used in an aggressive environment.
  • the cost of producing such an interface is relatively low, especially lower than the cost of producing two interfaces of the state of the art necessary for the realization of a conventional connection of a two-band radio. with an antenna.
  • the base 10 could include various fixing means on the station, and the plug 12 could include various connection means on an antenna.
  • the plug 12 could comprise two separate sealing membranes 42, each carrying a respective movable contact element 41.
  • the interface could comprise more than two coaxial cables and corresponding contactors, to allow transmission and / or reception on more than two radio frequency bands.

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Description

La prƩsente invention concerne une interface d'antenne pour un poste Ơ radiofrƩquences.The present invention relates to an antenna interface for a radiofrequency station.

On connaĆ®t dĆ©jĆ , dans l'Ć©tat de la technique, une interface d'antenne pour poste Ć  radiofrĆ©quences, du type comportant une embase, destinĆ©e Ć  ĆŖtre reliĆ©e au poste, et une fiche, destinĆ©e Ć  ĆŖtre reliĆ©e Ć  l'antenne.In the state of the art, an antenna interface for a radio frequency station, of the type comprising a base, intended to be connected to the station, and a plug, intended to be connected to the antenna, are already known.

En particulier, GB 2 423 649 dƩcrit une interface similaire Ơ celle dƩfinie dans le prƩambule de la revendication 1.In particular, GB 2,423,649 describes an interface similar to that defined in the preamble of claim 1.

Une telle interface est habituellement utilisƩe pour un poste mono-bande, c'est-Ơ-dire un poste capable d'Ʃmettre et/ou de recevoir sur une seule bande de frƩquences.Such an interface is usually used for a single-band station, that is to say a station capable of transmitting and / or receiving on a single frequency band.

Dans le cas d'un poste bi-bandes, c'est-Ơ-dire un poste capable d'Ʃmettre et/ou de recevoir sur deux bandes de frƩquences distinctes, il est nƩcessaire de prƩvoir deux embases d'inferfaces distinctes. Or, l'utilisation de deux embases est relativement encombrante, ce qui nuit notamment Ơ la miniaturisation du poste.In the case of a dual-band station, that is to say a station capable of transmitting and / or receiving on two separate frequency bands, it is necessary to provide two separate inferfaces bases. However, the use of two bases is relatively bulky, which affects the miniaturization of the post.

L'invention a notamment pour but de remƩdier Ơ cet inconvƩnient, en permettant la connexion d'antenne Ơ un poste bi-bandes, tout en limitant l'encombrement des moyens de connexion.The invention aims in particular to overcome this disadvantage, by allowing the antenna connection to a dual-band station, while limiting the size of the connection means.

A cet effet, l'invention a notamment pour objet une interface d'antenne pour poste Ơ radiofrƩquences selon la revendication 1.For this purpose, the subject of the invention is in particular an antenna interface for a radio frequency station according to claim 1.

Contrairement Ć  une interface d'antenne classique, l'interface selon l'invention prĆ©sente deux points chauds (formĆ©s par les contacteurs, auxquels sont reliĆ©s les Ć¢mes des cĆ¢bles), et une rĆ©fĆ©rence de masse (formĆ©e par le corps de la fiche, auquel sont reliĆ©s les tresses des cĆ¢bles). Ainsi, cette interface permet de travailler sur deux frĆ©quences distinctes, pour l'Ć©mission et/ou la rĆ©ception du poste sur ces deux bandes de frĆ©quences. L'interface selon l'invention est donc particuliĆØrement adaptĆ©e pour la connexion d'antenne Ć  un poste bi-bandes.Unlike a conventional antenna interface, the interface according to the invention has two hot spots (formed by the contactors, to which the cable cores are connected), and a ground reference (formed by the body of the plug, to which the braids of the cables are connected). Thus, this interface makes it possible to work on two distinct frequencies, for transmitting and / or receiving the station on these two frequency bands. The interface according to the invention is therefore particularly suitable for the antenna connection to a dual-band station.

ConformƩment Ơ l'invention, la connexion d'antenne au poste bi-bandes est rƩalisƩe au moyen d'une seule interface. Or, une seule interface est moins encombrante et coƻteux que les deux interfaces nƩcessaires dans l'Ʃtat de la technique.According to the invention, the antenna connection to the dual-band station is achieved by means of a single interface. However, a single interface is less cumbersome and expensive than the two interfaces required in the state of the art.

En outre, l'invention permet l'utilisation d'une unique antenne colinĆ©aire, ce qui permet l'Ć©mission et/ou la rĆ©ception du poste sur les deux bandes de frĆ©quences de maniĆØre simultanĆ©e, ce qui n'est pas possible dans l'Ć©tat de la technique. En effet, dans l'Ć©tat de la technique, l'utilisation de deux embases implique l'utilisation de deux antennes respectives, chacune Ć©mettant dans une bande de frĆ©quence, chaque antenne risquant de brouiller le signal de l'autre antenne.In addition, the invention allows the use of a single collinear antenna, which allows the transmission and / or reception of the station on the two frequency bands simultaneously, which is not possible in the state of the art. Indeed, in the state of the art, the use of two bases involves the use of two respective antennas, each transmitting in a frequency band, each antenna may interfere with the signal of the other antenna.

Par ailleurs, on notera que l'interface selon l'invention est adaptĆ©e Ć  une utilisation en environnement agressif, par exemple en environnement humide. En effet, la membrane assure une fonction d'Ć©tanchĆ©itĆ©, protĆ©geant notamment les connecteurs et les cĆ¢bles contre l'humiditĆ©.Furthermore, it will be noted that the interface according to the invention is suitable for use in an aggressive environment, for example in a humid environment. Indeed, the membrane provides a sealing function, including protecting connectors and cables against moisture.

L'interface selon l'invention peut comporter en outre l'une ou plusieurs des caractƩristiques suivantes, prises seules ou selon toutes combinaisons techniquement possibles :

  • chaque contacteur Ć  piston, notamment l'Ć©lĆ©ment cylindrique creux, est dimensionnĆ© de faƧon Ć  minimiser la diaphonie entre des signaux traversant ces contacteurs Ć  piston, de prĆ©fĆ©rence pour une diaphonie infĆ©rieure Ć  45dB,
  • l'embase comporte une premiĆØre partie, de prĆ©fĆ©rence filetĆ©e afin d'ĆŖtre vissĆ©e dans un orifice complĆ©mentaire du poste ou vissĆ©e Ć  un contre-Ć©crou, et une seconde partie filetĆ©e, destinĆ©e Ć  ĆŖtre vissĆ©e dans un logement complĆ©mentaire de la fiche, les premiĆØre et seconde parties filetĆ©es Ć©tant sĆ©parĆ©es axialement par une collerette,
  • la collerette porte, du cĆ“tĆ© de la premiĆØre partie, un joint d'Ć©tanchĆ©itĆ© destinĆ© Ć  coopĆ©rer avec un contour de l'orifice complĆ©mentaire du poste,
  • le corps de la fiche prĆ©sente une forme gĆ©nĆ©rale de rĆ©volution autour d'un axe, la fiche comportant une molette libre en rotation autour de l'axe par rapport au corps, la molette prĆ©sentant une forme gĆ©nĆ©rale cylindrique creuse, taraudĆ©e intĆ©rieurement, dĆ©limitant le logement complĆ©mentaire de la seconde partie filetĆ©e de l'embase,
  • l'interface comporte un joint d'Ć©tanchĆ©itĆ©, agencĆ© dans le logement de la molette, entre le corps et la molette,
  • l'embase et la fiche comportent des moyens complĆ©mentaires formant dĆ©trompeur, destinĆ©s Ć  assurer que les contacteurs coopĆØrent avec une Ć¢me respective lorsque la fiche et l'embase sont connectĆ©es ensemble.
The interface according to the invention may further comprise one or more of the following characteristics, taken alone or in any technically possible combination:
  • each piston contactor, in particular the hollow cylindrical element, is dimensioned so as to minimize crosstalk between signals passing through these piston contactors, preferably for a crosstalk of less than 45 dB,
  • the base comprises a first portion, preferably threaded so as to be screwed into a complementary orifice of the station or screwed to a lock nut, and a second threaded portion, intended to be screwed into a complementary housing of the plug, the first and second threaded portions being axially separated by a flange,
  • the flange carries, on the side of the first part, a seal intended to cooperate with a contour of the complementary orifice of the station,
  • the body of the plug has a general shape of revolution about an axis, the plug having a wheel free to rotate about the axis relative to the body, the wheel having a generally hollow cylindrical shape, internally threaded, delimiting the housing complementary to the second threaded part of the base,
  • the interface comprises a seal, arranged in the housing of the wheel, between the body and the wheel,
  • the base and the plug comprise complementary polarizing means intended to ensure that the contactors cooperate with a respective core when the plug and the base are connected together.

L'invention sera mieux comprise Ơ la lecture de la description qui va suivre, donnƩe uniquement Ơ titre d'exemple et faite en se rƩfƩrant aux figures annexƩes dans lesquelles :

  • la figure 1 est une vue en coupe axiale partielle d'une interface d'antenne selon un exemple de mode de rĆ©alisation de l'invention,
  • la figure 2 est une vue en perspective d'une embase de l'interface d'antenne de la figure 1,
  • la figure 3 est une vue en Ć©lĆ©vation de l'embase de la figure 2,
  • la figure 4 est une vue en coupe transversale de l'embase de la figure 1,
  • la figure 5 est une vue en perspective d'une fiche de l'interface de la figure 1,
  • la figure 6 est une vue en coupe axiale partielle de la fiche de la figure 5, et
  • la figure 7 est une vue en coupe transversale de la fiche de la figure 5.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended figures in which:
  • the figure 1 is a partial axial sectional view of an antenna interface according to an exemplary embodiment of the invention,
  • the figure 2 is a perspective view of a base of the antenna interface of the figure 1 ,
  • the figure 3 is an elevation view of the base of the figure 2 ,
  • the figure 4 is a cross-sectional view of the base of the figure 1 ,
  • the figure 5 is a perspective view of a plug of the interface of the figure 1 ,
  • the figure 6 is a partial axial sectional view of the sheet of the figure 5 , and
  • the figure 7 is a cross-sectional view of the sheet of the figure 5 .

On a reprƩsentƩ sur la figure 1 une interface d'antenne 8 selon un exemple de mode de rƩalisation de l'invention. Une telle interface 8 est notamment destinƩ Ơ Ʃquiper un poste Ơ radiofrƩquences, par exemple un poste de radio tactique bi-bandes, pour la connexion d'une antenne bi-bandes.We have shown on the figure 1 an antenna interface 8 according to an exemplary embodiment of the invention. Such an interface 8 is intended in particular to equip a radio frequency station, for example a two-band tactical radio station, for connecting a two-band antenna.

L'interface 8 comporte une embase 10, notamment reprƩsentƩe sur les figures 2 Ơ 4, et une fiche 12, notamment reprƩsentƩe sur les figures 5 Ơ 7, destinƩe Ơ coopƩrer avec l'embase 10 de faƧon Ơ former l'interface 8 comme cela est reprƩsentƩ sur la figure 1.The interface 8 comprises a base 10, in particular represented on the Figures 2 to 4 , and a card 12, in particular represented on the Figures 5 to 7 , intended to cooperate with the base 10 so as to form the interface 8 as shown in FIG. figure 1 .

L'embase 10 comporte un corps 11, de forme gĆ©nĆ©rale de rĆ©volution autour d'un axe X. Ce corps 11 comporte une premiĆØre partie 14 et une seconde partie 16, sensiblement cylindriques, et une collerette 18 sĆ©parant axialement les premiĆØre 14 et seconde 16 parties.The base 10 comprises a body 11 of generally circular shape about an axis X. This body 11 comprises a first portion 14 and a second portion 16, substantially cylindrical, and a collar 18 separating axially the first 14 and second 16 parts.

La premiĆØre partie 14 prĆ©sente une surface extĆ©rieure filetĆ©e, destinĆ©e Ć  ĆŖtre vissĆ©e dans un orifice complĆ©mentaire taraudĆ© du poste Ć  radiofrĆ©quences (non reprĆ©sentĆ©). La collerette 18 forme alors notamment une butĆ©e de fin de course pour ce vissage.The first portion 14 has a threaded outer surface, to be screwed into a threaded complementary orifice of the radiofrequency station (not shown). The flange 18 then forms in particular an end stop for this screwing.

On notera que la surface extĆ©rieure filetĆ©e forme des moyens de fixation au poste Ć  radiofrĆ©quences particuliĆØrement compacts, prĆ©sentant un encombrement axial rĆ©duit, et suffisamment robustes.It will be noted that the threaded outer surface forms fastening means at the radiofrequency station that are particularly compact, have a reduced axial size, and are sufficiently robust.

Avantageusement, un joint d'ƩtanchƩitƩ 20, visible sur la figure 3, est portƩ par la collerette 18. Un tel joint d'ƩtanchƩitƩ 20 est destinƩ Ơ coopƩrer avec un contour de l'orifice complƩmentaire du poste, afin d'assurer l'ƩtanchƩitƩ du poste.Advantageously, a seal 20, visible on the figure 3 is carried by the flange 18. Such a seal 20 is intended to cooperate with a contour of the complementary orifice of the station, to ensure the tightness of the station.

En variante, la premiĆØre partie 14 pourrait comporter tout autre moyen de fixation au poste Ć  radiofrĆ©quences. Par exemple, cette premiĆØre partie 14 pourrait n'ĆŖtre filetĆ©e que sur une zone destinĆ©e Ć  ĆŖtre vissĆ©e dans un contre-Ć©crou. La premiĆØre partie 14 pourrait Ć©galement ne pas ĆŖtre filetĆ©e, mais destinĆ©e Ć  ĆŖtre entrĆ©e en force dans un orifice complĆ©mentaire du poste.Alternatively, the first portion 14 could include any other means of attachment to the radiofrequency station. For example, this first portion 14 could be threaded only on an area to be screwed into a lock nut. The first portion 14 may also not be threaded, but intended to be forced into a complementary hole of the station.

La seconde partie 16 prĆ©sente Ć©galement une surface extĆ©rieure filetĆ©e. De prĆ©fĆ©rence, cette seconde partie 16 prĆ©sente un diamĆØtre supĆ©rieur Ć  un diamĆØtre de la premiĆØre partie 14.The second portion 16 also has a threaded outer surface. Preferably, this second portion 16 has a diameter greater than a diameter of the first portion 14.

Avantageusement, le diamĆØtre de l'embase 10, notamment le diamĆØtre de la collerette 18, est infĆ©rieur Ć  2 cm. En d'autres termes, l'embase 10 est moins volumineuse qu'une embase d'une interface classique.Advantageously, the diameter of the base 10, in particular the diameter of the flange 18, is less than 2 cm. In other words, the base 10 is less bulky than a base of a conventional interface.

La seconde partie 16 comporte une cavitƩ axiale 21, dƩlimitƩe axialement par une paroi de fond 21A.The second part 16 comprises an axial cavity 21 delimited axially by a bottom wall 21A.

L'embase 10 comporte par ailleurs au moins deux cĆ¢bles coaxiaux 22 distincts, destinĆ©s Ć  ĆŖtre reliĆ©s Ć  une carte radio du poste. Ainsi, cette embase permet un interfaƧage mĆ©canique direct avec cette carte radio.The base 10 also comprises at least two separate coaxial cables 22, intended to be connected to a radio card of the station. Thus, this base allows direct mechanical interfacing with this radio card.

On a reprĆ©sentĆ© plus en dĆ©tail un cĆ¢ble coaxial 22 sur la figure 1. De maniĆØre classique, chaque cĆ¢ble coaxial 22 comporte une Ć¢me conductrice centrale 22A, entourĆ©e d'un matĆ©riau isolant Ć©lectrique 22B, lui-mĆŖme entourĆ©e d'une tresse conductrice 22C, disposĆ©e coaxialement Ć  l'Ć¢me. La tresse 22C est enfin enveloppĆ©e d'une gaine isolante 22D, de prĆ©fĆ©rence fixĆ©e Ć  l'embase 10.There is shown in more detail a coaxial cable 22 on the figure 1 . Conventionally, each coaxial cable 22 comprises a central conductive core 22A, surrounded by an electrical insulating material 22B, itself surrounded by a conductive braid 22C, disposed coaxially with the core. The braid 22C is finally wrapped with an insulating sheath 22D, preferably fixed to the base 10.

Chaque cĆ¢ble 22 comporte une premiĆØre extrĆ©mitĆ©, s'Ć©tend axialement hors de l'embase 10, au-delĆ  de la premiĆØre partie 14, et comportant un connecteur classique (non reprĆ©sentĆ©) destinĆ© Ć  ĆŖtre reliĆ© Ć  la carte radio du poste. Chaque cĆ¢ble 22 comporte Ć©galement une seconde extrĆ©mitĆ©, opposĆ©e Ć  la premiĆØre, s'Ć©tendant Ć  travers l'embase 10, jusqu'Ć  la paroi de fond 21A.Each cable 22 has a first end, extends axially out of the base 10, beyond the first portion 14, and having a conventional connector (not shown) intended to be connected to the radio card of the station. Each cable 22 also has a second end, opposite the first, extending through the base 10, to the bottom wall 21A.

La seconde extrĆ©mitĆ© de chaque cĆ¢ble 22 est reliĆ©e Ć  l'embase 10 au moyen d'un Ć©lĆ©ment de connexion 23, dĆ©crit en rĆ©fĆ©rence Ć  la figure 1.The second end of each cable 22 is connected to the base 10 by means of a connecting element 23, described with reference to FIG. figure 1 .

L'Ć©lĆ©ment de connexion 23 comporte une premiĆØre partie 23A conductrice en forme de manchon, destinĆ©e Ć  coopĆ©rer avec la tresse 22C d'un cĆ¢ble 22 respectif, cette premiĆØre partie 23A Ć©tant logĆ©e sans jeu dans un orifice traversant 24 du corps 11 de l'embase 10. Ainsi, la tresse 22C est reliĆ©e Ć©lectriquement au corps 11 par l'intermĆ©diaire de cette premiĆØre partie 23A de l'Ć©lĆ©ment de connexion 23.The connecting element 23 comprises a first sleeve-shaped conductor portion 23A intended to cooperate with the braid 22C of a respective cable 22, this first portion 23A being housed without play in a through-orifice 24 of the body 11 of the base 10. Thus, the braid 22C is electrically connected to the body 11 via this first portion 23A of the connection element 23.

L'Ć©lĆ©ment de connexion 23 comporte par ailleurs une seconde partie 23B conductrice, destinĆ©e Ć  coopĆ©rer avec l'Ć¢me 22A du cĆ¢ble 22 correspondant. Par exemple, l'Ć¢me 22A est insĆ©rĆ©e dans un orifice longitudinal de la seconde partie 23B. De prĆ©fĆ©rence, la seconde partie 23B comporte une platine de contact 25.The connection element 23 further includes a second conductive portion 23B, intended to cooperate with the core 22A of the corresponding cable 22. For example, the core 22A is inserted into a longitudinal hole of the second portion 23B. Preferably, the second portion 23B comprises a contact plate 25.

L'Ć©lĆ©ment de connexion 23 comporte enfin un isolant Ć©lectrique 23C, intercalĆ© radialement entre les premiĆØre 23A et seconde 23B parties conductrices afin de les isoler Ć©lectriquement l'une par rapport Ć  l'autre.The connection element 23 finally comprises an electrical insulator 23C, radially interposed between the first 23A and second 23B conductive parts to electrically isolate them relative to each other.

Avantageusement, des joints toriques d'Ć©tanchĆ©itĆ© 26A, 26B sont intercalĆ©s radialement entre la premiĆØre partie conductrice 23A et l'isolant 23C, et entre l'isolant 23C et la seconde partie conductrice 23B respectivement.Advantageously, sealing O-rings 26A, 26B are interposed radially between the first conducting portion 23A and the insulator 23C, and between the insulator 23C and the second conducting portion 23B respectively.

La paroi de fond 21A comporte au moins deux orifices 21B, Ć  travers lesquels les platines de contact 25 sont respectivement accessibles.The bottom wall 21A has at least two orifices 21B, through which the contact plates 25 are respectively accessible.

La fiche 12, reprƩsentƩe plus en dƩtail sur les figures 5 Ơ 7, prƩsente Ʃgalement une forme gƩnƩrale de rƩvolution autour d'un axe X', et comporte un corps 27 et une molette 28 libre en rotation autour de l'axe X' par rapport au corps 27.Card 12, shown in more detail on the Figures 5 to 7 , also has a general shape of revolution about an axis X ', and comprises a body 27 and a wheel 28 free to rotate about the axis X' relative to the body 27.

Le corps 27 porte sur sa surface extƩrieure des moyens 30 de connexion sur une antenne, notamment une antenne de type colinƩaire classique.The body 27 carries on its outer surface 30 connection means on an antenna, including a conventional collinear type antenna.

Les moyens de connexion 30 comportent par exemple deux paires 31 de doigts de fixation 31A, les paires 31 Ć©tant agencĆ©es de maniĆØre diamĆ©tralement opposĆ©es l'une par rapport Ć  l'autre. Les doigts de fixation 31A de chaque paire 31 sont espacĆ©s l'un par rapport Ć  l'autre, de faƧon adaptĆ©e pour recevoir un circuit imprimĆ© de l'antenne colinĆ©aire entre ces doigts 31A.The connection means 30 comprise for example two pairs 31 of fastening fingers 31A, the pairs 31 being arranged diametrically opposite one another. The fixing fingers 31A of each pair 31 are spaced relative to each other, adapted to receive a printed circuit of the collinear antenna between these fingers 31A.

De prƩfƩrence, les doigts de fixation 31A sont adaptƩs pour permettre le soudage du circuit imprimƩ sur ces doigts 31A. En effet, le soudage permet une fixation robuste et Ʃlectriquement conductrice.Preferably, the fixing fingers 31A are adapted to allow the soldering of the printed circuit on these fingers 31A. Indeed, the welding allows a robust attachment and electrically conductive.

Avantageusement, les doigts de fixation 31A sont venus de matiĆØre avec le corps 27 de la fiche 12. En variante, ces doigts 31A pourraient ĆŖtre rapportĆ©s sur le corps 27, notamment dans le cas oĆ¹ le matĆ©riau dans lequel les doigts 31A sont rĆ©alisĆ©s est plus adaptĆ© pour le soudage que le matĆ©riau dans lequel le corps 27 est rĆ©alisĆ©.Advantageously, the fixing fingers 31A are integral with the body 27 of the plug 12. Alternatively, these fingers 31A could be attached to the body 27, especially in the case where the material in which the fingers 31A are made is more adapted for welding that the material in which the body 27 is made.

Par ailleurs, le corps 27 porte un joint torique d'ƩtanchƩitƩ 29 et une collerette 30. Ainsi, le corps 27 est adaptƩ pour recevoir un manchon de l'antenne, le corps 27 Ʃtant emboƮtƩ dans ce manchon jusqu'Ơ la collerette 32, le joint d'ƩtanchƩitƩ 29 coopƩrant alors avec le manchon.In addition, the body 27 carries an O-ring seal 29 and a collar 30. Thus, the body 27 is adapted to receive a sleeve of the antenna, the body 27 being fitted in this sleeve to the collar 32, the seal 29 then cooperating with the sleeve.

La molette 28 forme un manchon, de forme gĆ©nĆ©rale cylindrique creuse, dĆ©limitant un logement 33, Ć  paroi intĆ©rieure taraudĆ©e complĆ©mentaire de la seconde partie filetĆ©e 16 de l'embase 10. Ainsi, la connexion de l'embase 10 avec la fiche 12 est rĆ©alisĆ©e par insertion de la seconde partie filetĆ©e 16 dans le logement taraudĆ© 33, puis par rotation de la molette 28, de faƧon Ć  visser cette molette 28 sur la seconde partie 16, jusqu'Ć  ce que la paroi de fond 21A de l'embase 10 coopĆØre avec une butĆ©e de fin de course 33A prĆ©vue dans le logement 33.The wheel 28 forms a sleeve of generally hollow cylindrical shape, delimiting a housing 33, internally threaded wall complementary to the second threaded portion 16 of the base 10. Thus, the connection of the base 10 with the plug 12 is realized by inserting the second threaded portion 16 in the threaded housing 33, then by rotating the wheel 28, so as to screw the wheel 28 on the second portion 16, until the bottom wall 21A of the base 10 cooperates with a limit stop 33A provided in the housing 33.

De prƩfƩrence, un joint d'ƩtanchƩitƩ 34 est agencƩ dans le logement 33, entre la paroi intƩrieure du logement 33 et le corps 27, afin d'assurer l'ƩtanchƩitƩ de la connexion entre l'embase 10 et la fiche 12.Preferably, a seal 34 is arranged in the housing 33, between the inner wall of the housing 33 and the body 27, in order to seal the connection between the base 10 and the plug 12.

La fiche 12 comporte Ć©galement au moins deux contacteurs 36, portĆ©s par le corps 27 de cette fiche 12. Lorsque la fiche 12 est connectĆ©e avec l'embase 10, chaque contacteur 36 coopĆØre avec la platine 25 reliĆ©e Ć  l'Ć¢me 22A d'un cĆ¢ble 22 respectif, accessible Ć  travers l'orifice 21B respectif de la paroi de fond 21A. Par ailleurs, les tresses 22C des cĆ¢bles 22 coopĆØrent avec le corps 27 de la fiche12, par l'intermĆ©diaire du corps 11 de l'embase. En d'autres termes, les contacteurs 36 forment deux points chauds de l'antenne, alors que le corps 27 de la fiche 12 forme la masse de rĆ©fĆ©rence.The plug 12 also comprises at least two contactors 36, carried by the body 27 of this plug 12. When the plug 12 is connected with the base 10, each contactor 36 cooperates with the plate 25 connected to the core 22A of a respective cable 22, accessible through the respective orifice 21B of the bottom wall 21A. Furthermore, the braids 22C of the cables 22 cooperate with the body 27 of the plug 12, through the body 11 of the base. In other words, the contactors 36 form two hot spots of the antenna, while the body 27 of the plug 12 forms the reference mass.

De prĆ©fĆ©rence, l'embase 10 et la fiche 12 comportent des moyens complĆ©mentaires 35 formant dĆ©trompeur, destinĆ©s Ć  assurer que chaque contacteur 36 coopĆØre avec la platine 25 respective lorsque la fiche 12 et l'embase 10 sont connectĆ©es ensemble.Preferably, the base 10 and the plug 12 comprise complementary polarizing means, intended to ensure that each switch 36 cooperates with the respective plate 25 when the plug 12 and the base 10 are connected together.

Par exemple, les moyens 35 comportent une saillie 35A portĆ©e par la fiche 12 (visible sur la figure 7), et une cavitĆ© complĆ©mentaire 35B mĆ©nagĆ©e dans la paroi de fond 21A de l'embase 10 (visible sur la figure 4). Ainsi, la saillie 35A est protĆ©gĆ©e par la molette 28, dont la hauteur empĆŖche un accĆØs aisĆ© Ć  cette saillie 35A Ć  des Ć©lĆ©ments susceptibles de la dĆ©tĆ©riorer. Cependant, la saillie pourrait en variante ĆŖtre portĆ©e par l'embase 10, et la cavitĆ© complĆ©mentaire mĆ©nagĆ©e dans la fiche 12. On pourrait Ć©galement prĆ©voir d'autres moyens formant dĆ©trompeur.For example, the means 35 comprise a projection 35A carried by the plug 12 (visible on the figure 7 ), and a complementary cavity 35B formed in the bottom wall 21A of the base 10 (visible on the figure 4 ). Thus, the projection 35A is protected by the wheel 28, whose height prevents easy access to this projection 35A to elements likely to deteriorate. However, the projection could alternatively be carried by the base 10, and the complementary cavity formed in the plug 12. It could also provide other polarizing means.

Avantageusement, au moins un contacteur 36, de prƩfƩrence chaque contacteur 36, est un contacteur Ơ piston, comportant une partie fixe 37, et une partie 38 mobile par rapport Ơ la partie fixe 37, ainsi qu'un organe Ʃlastique 39, par exemple un ressort, agencƩ entre la partie fixe 37 et la partie mobile 38 pour rappeler la partie mobile 38 vers une position de repos.Advantageously, at least one contactor 36, preferably each contactor 36, is a piston contactor, comprising a fixed part 37, and a portion 38 movable relative to the fixed part 37, and an elastic member 39, for example a spring, arranged between the fixed portion 37 and the movable portion 38 to return the movable portion 38 to a rest position.

La partie fixe 37 comporte un Ć©lĆ©ment cylindrique creux 37A, isolant Ć©lectriquement, formant corps de piston dans lequel la partie mobile 38 est destinĆ©e Ć  se dĆ©placer axialement. La partie fixe 37 comporte Ć©galement un Ć©lĆ©ment longitudinal conducteur 37B, s'Ć©tendant longitudinalement entre une premiĆØre extrĆ©mitĆ©, formant un premier siĆØge pour l'organe Ć©lastique 39, et une seconde extrĆ©mitĆ©, s'Ć©tendant hors du corps 27, destinĆ©e Ć  ĆŖtre connectĆ©e au circuit imprimĆ© de l'antenne.The fixed part 37 comprises a hollow cylindrical element 37A, electrically insulating, forming a piston body in which the movable portion 38 is intended to move axially. The stationary portion 37 also includes a conductive longitudinal member 37B, extending longitudinally between a first end, forming a first seat for the resilient member 39, and a second end, extending out of the body 27, to be connected to the circuit board of the antenna.

De prĆ©fĆ©rence, le corps 27 porte des Ć©lĆ©ments annulaires isolants de support 44, chaque Ć©lĆ©ment annulaire isolant 44 portant la seconde extrĆ©mitĆ© d'un Ć©lĆ©ment longitudinal conducteur 37A respectif. Ces Ć©lĆ©ments annulaires 44 sont destinĆ©s Ć  maintenir les secondes extrĆ©mitĆ©s dans un positionnement prĆ©cis, afin d'assurer la bonne connexion de ces secondes extrĆ©mitĆ©s avec le circuit imprimĆ© de l'antenne. En outre, ces Ć©lĆ©ments annulaires 44, en maintenant les secondes extrĆ©mitĆ©s, participent Ć  la bonne robustesse de la fiche 12. Par exemple, ces Ć©lĆ©ments annulaires isolants 44 sont rĆ©alisĆ©s en TĆ©flonĀ®.Preferably, the body 27 carries insulating annular support members 44, each insulating annular element 44 carrying the second end of a respective conductive longitudinal member 37A. These annular elements 44 are intended to maintain the second ends in precise positioning, to ensure the proper connection of these second ends with the printed circuit of the antenna. In addition, these annular elements 44, maintaining the second ends, contribute to the good strength of the plug 12. For example, these annular insulating elements 44 are made of TeflonĀ®.

ConformĆ©ment au mode de rĆ©alisation dĆ©crit, la partie mobile 38 comporte un Ć©lĆ©ment de poussĆ©e 40, formant un second siĆØge de l'organe Ć©lastique 39, et un Ć©lĆ©ment de contact 41, destinĆ© Ć  coopĆ©rer avec une platine 25 respective lorsque l'embase 10 est connectĆ©e avec la fiche 12.According to the embodiment described, the mobile part 38 comprises a thrust member 40, forming a second seat of the elastic member 39, and a contact element 41, intended to cooperate with a respective plate 25 when the base 10 is connected with the plug 12.

L'Ć©lĆ©ment de contact 41 comporte une premiĆØre partie 41A de guidage, et une seconde partie 41B de contact.The contact element 41 has a first guide portion 41A, and a second contact portion 41B.

La premiĆØre partie 41A prĆ©sente une forme gĆ©nĆ©rale cylindrique, de diamĆØtre sensiblement Ć©gal Ć  un diamĆØtre intĆ©rieur de l'Ć©lĆ©ment cylindrique creux 37A formant corps de piston, afin de coopĆ©rer sans jeu avec une paroi intĆ©rieure de cet Ć©lĆ©ment cylindrique creux 37A. Ainsi, cette premiĆØre partie 41A est susceptible de guider axialement la partie mobile 38 lorsqu'elle coulisse dans l'Ć©lĆ©ment cylindrique creux 37A, en s'assurant que cette partie mobile 38 ne se dĆ©cale pas radialement. On assure ainsi notamment un bon alignement entre l'Ć©lĆ©ment de poussĆ©e 40 et l'Ć©lĆ©ment de contact 41.The first portion 41A has a generally cylindrical shape, of diameter substantially equal to an inner diameter of the hollow cylindrical member 37A piston body, to cooperate without play with an inner wall of the hollow cylindrical member 37A. Thus, this first portion 41A is capable of axially guiding the movable portion 38 as it slides in the hollow cylindrical member 37A, ensuring that this movable portion 38 does not shift radially. This ensures in particular a good alignment between the thrust member 40 and the contact element 41.

La premiĆØre partie 41A prĆ©sente une surface, de prĆ©fĆ©rence plane, coopĆ©rant avec l'Ć©lĆ©ment de poussĆ©e 40. A cet effet, l'Ć©lĆ©ment de poussĆ©e 40 prĆ©sente une tĆŖte 40A, destinĆ©e Ć  coopĆ©rer avec cette surface plane. De prĆ©fĆ©rence, la tĆŖte 40A prĆ©sente une forme gĆ©nĆ©rale arrondie, afin d'assurer un contact optimal avec la surface plane de la premiĆØre partie 41A.The first portion 41A has a surface, preferably flat, cooperating with the thrust member 40. For this purpose, the thrust member 40 has a head 40A, intended to cooperate with this flat surface. Preferably, the head 40A has a generally rounded shape, to ensure an optimal contact with the flat surface of the first portion 41A.

La seconde partie de contact 41B forme une tĆŖte de l'Ć©lĆ©ment de contact 41, destinĆ©e Ć  coopĆ©rer avec une platine 25 respective lorsque l'embase 10 est connectĆ©e avec la fiche 12. De prĆ©fĆ©rence la seconde partie de contact 41B prĆ©sente une forme gĆ©nĆ©rale arrondie, afin d'assurer un contact optimal avec la platine 25.The second contact portion 41B forms a head of the contact element 41, intended to cooperate with a respective plate 25 when the base 10 is connected with the plug 12. Preferably the second contact portion 41B has a generally rounded shape , in order to ensure an optimal contact with the plate 25.

La fiche 12 comporte par ailleurs une membrane d'ƩtanchƩitƩ 42, fixƩe au corps 27 au moyen d'une rondelle de fixation 43.The plug 12 further comprises a sealing membrane 42, fixed to the body 27 by means of a fixing washer 43.

La membrane d'Ć©tanchĆ©itĆ© 42 prĆ©sente deux orifices traversants, Ć  travers desquels passe un Ć©lĆ©ment de contact 41 respectif. Ainsi, la premiĆØre partie 41A d'un Ć©lĆ©ment de contact 41 est disposĆ© d'un cĆ“tĆ© de la membrane 42, et la seconde partie de contact 41B est disposĆ©e de l'autre cĆ“tĆ© de la membrane 42, de faƧon Ć  ĆŖtre accessible au contact d'une platine 25, les premiĆØre 41A et seconde 41B parties Ć©tant reliĆ©es par une partie de liaison 41C de diamĆØtre sensiblement Ć©gal Ć  celui de l'orifice correspondant.The sealing membrane 42 has two through orifices, through which passes a respective contact element 41. Thus, the first portion 41A of a contact element 41 is disposed on one side of the membrane 42, and the second contact portion 41B is disposed on the other side of the membrane 42, so as to be accessible on contact a plate 25, the first 41A and second 41B parts being connected by a connecting portion 41C of diameter substantially equal to that of the corresponding orifice.

La membrane 42 est relativement souple, afin d'autoriser le dĆ©placement de la partie mobile 38. Par exemple, la membrane 42 est rĆ©alisĆ©e en Ć©lastomĆØre, de prĆ©fĆ©rence en silicone fluorĆ©.The membrane 42 is relatively flexible, to allow movement of the movable portion 38. For example, the membrane 42 is made of elastomer, preferably fluorinated silicone.

On notera que la rondelle de fixation 43 s'Ʃtend axialement au-delƠ de la membrane 42, de faƧon Ơ porter la butƩe de fin de course 33A. Ainsi, lorsque l'embase 10 est connectƩe avec la fiche 12, il subsiste un espace libre 46 entre la membrane 42 et la paroi de fond 21A. Cet espace libre 46 permet notamment une dƩformation libre de la membrane 42, afin de ne pas bloquer les dƩplacements Ʃventuels des parties mobiles 38.Note that the fixing washer 43 extends axially beyond the membrane 42, so as to bear the end stop 33A. Thus, when the base 10 is connected with the plug 12, there remains a free space 46 between the membrane 42 and the bottom wall 21A. This free space 46 allows in particular a free deformation of the membrane 42, so as not to block the possible displacements of the moving parts 38.

Un tel contacteur Ć  piston 36 peut s'adapter de maniĆØre simple et efficace Ć  son environnement, du fait que la position de la partie mobile 38 est variable. Ainsi, les contacteurs Ć  piston permettent notamment une fixation souple et simple de l'embase 10 avec la fiche 12, en rattrapant par exemple des jeux ou des dĆ©fauts d'alignement. De tels contacteurs Ć  piston 36 sont particuliĆØrement compacts, ce qui permet de rĆ©aliser une interface de dimensions rĆ©duites.Such a piston contactor 36 can adapt simply and effectively to its environment, because the position of the movable portion 38 is variable. Thus, the piston contactors allow a flexible and simple attachment of the base 10 with the plug 12, for example catching games or misalignment. Such Piston contactors 36 are particularly compact, which makes it possible to produce an interface of reduced dimensions.

Par ailleurs, ces contacteurs Ơ piston 36 permettent un dƩcouplage efficace des deux bandes. Ainsi, l'interface selon l'invention permet notamment au poste radio d'Ʃmettre et/ou de recevoir dans deux bandes de faƧon simultanƩe.Moreover, these piston contactors 36 allow efficient decoupling of the two strips. Thus, the interface according to the invention notably allows the radio to transmit and / or receive in two bands simultaneously.

En effet, chaque contacteur Ć  piston est dimensionnĆ© de faƧon Ć  minimiser le couplage entre les deux bandes, afin que le signal sur une voie ne perturbe pas le signal sur l'autre voie. En d'autres termes, chaque contacteur Ć  piston est dimensionnĆ© de faƧon Ć  minimiser la diaphonie (appelĆ©e Ā« Cross talk Ā» en anglais, c'est-Ć -dire la superposition parasite et inopportune d'un signal sur un autre) entre des signaux traversant ces contacteurs Ć  piston, de prĆ©fĆ©rence pour une diaphonie infĆ©rieure Ć  45dB.Indeed, each piston contactor is dimensioned so as to minimize the coupling between the two bands, so that the signal on one channel does not disturb the signal on the other channel. In other words, each piston contactor is dimensioned so as to minimize crosstalk (called "cross talk" in English, ie the unwanted and untimely superposition of one signal on another) between signals. through these piston contactors, preferably for crosstalk less than 45dB.

En particulier, les dimensions de l'Ć©lĆ©ment cylindrique creux 37A, isolant Ć©lectriquement, sont choisies de faƧon Ć  maximiser la rĆ©sistance de cet Ć©lĆ©ment cylindrique contre les pertes d'ondes, cette rĆ©sistance s'exprimant sous la forme : R = 60 Īµ r ā‹… ln Dext D ā¢ int ,

Figure imgb0001
oĆ¹

  • R est la rĆ©sistance de l'Ć©lĆ©ment isolant 37A contre les pertes d'ondes,
  • Īµr est la permittivitĆ© relative du matĆ©riau dans lequel est rĆ©alisĆ© l'Ć©lĆ©ment isolant 37A,
  • Dext est le diamĆØtre extĆ©rieur de l'Ć©lĆ©ment isolant 37A, et
  • Dint est le diamĆØtre intĆ©rieur de l'Ć©lĆ©ment isolant 37A.
In particular, the dimensions of the hollow cylindrical element 37A, electrically insulating, are chosen so as to maximize the resistance of this cylindrical element against the wave losses, this resistance being expressed in the form: R = 60 Īµ r ā‹… ln Dext D ā¢ int ,
Figure imgb0001
 or
  • R is the resistance of the insulating element 37A against the wave losses,
  • Īµ r is the relative permittivity of the material in which the insulating element 37A is produced,
  • Dext is the outer diameter of the insulating member 37A, and
  • Dint is the inside diameter of the insulating member 37A.

Les diamĆØtres intĆ©rieur et extĆ©rieur de l'Ć©lĆ©ment isolant 37A sont alors gĆ©nĆ©ralement dĆ©terminĆ©s Ć  l'aide de simulations permettant d'estimer des valeurs optimales.The inner and outer diameters of the insulating element 37A are then generally determined by means of simulations making it possible to estimate optimal values.

Par ailleurs, le rapport du diamĆØtre de la membrane 42 sur le diamĆØtre d'une seconde partie de contact 41B est Ć©galement estimĆ© de faƧon Ć  optimiser le dĆ©couplage entre les deux voies.Moreover, the ratio of the diameter of the membrane 42 to the diameter of a second contact portion 41B is also estimated so as to optimize the decoupling between the two channels.

On notera que l'interface selon l'invention prĆ©sente une Ć©tanchĆ©itĆ© optimale, et prĆ©sente une bonne robustesse. Une telle interface pourrait notamment ĆŖtre utilisĆ© dans un environnement agressif.It will be noted that the interface according to the invention has an optimum seal, and has good robustness. Such an interface could in particular be used in an aggressive environment.

Par ailleurs, le coƻt de rƩalisation d'une telle interface est relativement bas, notamment plus bas que le coƻt de rƩalisation de deux interfaces de l'Ʃtat de la technique nƩcessaires pour la rƩalisation d'une connexion classique d'une radio bi-bandes avec une antenne.Moreover, the cost of producing such an interface is relatively low, especially lower than the cost of producing two interfaces of the state of the art necessary for the realization of a conventional connection of a two-band radio. with an antenna.

On notera que l'invention n'est pas limitƩe au mode de rƩalisation prƩcƩdemment dƩcrit, mais pourrait prƩsenter diverses variantes sans sortir du cadre des revendications.Note that the invention is not limited to the embodiment described above, but could have various variants without departing from the scope of the claims.

En particulier, l'embase 10 pourrait comporter divers moyens de fixation sur le poste, et la fiche 12 pourrait comporter divers moyens de connexion sur une antenne.In particular, the base 10 could include various fixing means on the station, and the plug 12 could include various connection means on an antenna.

ConformƩment Ơ une autre variante, la fiche 12 pourrait comporter deux membranes d'ƩtanchƩitƩ 42 distinctes, portant chacune un ƩlƩment mobile de contact 41 respectif.According to another variant, the plug 12 could comprise two separate sealing membranes 42, each carrying a respective movable contact element 41.

ConformĆ©ment Ć  une autre variante, l'interface pourrait comporter plus de deux cĆ¢bles coaxiaux et de contacteurs correspondants, afin de permettre une Ć©mission et/ou une rĆ©ception sur plus de deux bandes de radiofrĆ©quences.According to another variant, the interface could comprise more than two coaxial cables and corresponding contactors, to allow transmission and / or reception on more than two radio frequency bands.

Claims (7)

  1. An antenna interface (8) for a radio receiver, of the type comprising a socket (10), designed to be connected to the receiver, and a plug (12), designed to be connected to the antenna, wherein:
    - the socket (10) comprises a body (11) and two coaxial distinct cables (22), each comprising a core (22A), a conductive braid (22C) coaxial to the core (22A), and an electric insulator (22B) between the core (22A) and the braid (22C) so as to electrically insulate them,
    - each coaxial cable (22) extends between a first end, intended to be connected to a printed circuit board of the receiver, and a second end, at which the braid (22C) is electrically connected to the body (11) of the socket (10), and at which the core (22A) can be accessed through a respective opening (21B) made in the body (11) of the socket (10),
    - the plug (12) comprises a body (27) and at least two contactors (36), such that, when the plug (12) and the socket (10) are connected together, each contactor (36) is arranged opposite an opening (21B) such that the core (22A) of a respective cable (22) is electrically connected to said contactor (36), and the braid (22C) of each cable (22) is electrically connected to the body (27) of the plug via the body (11) of the socket (10),
    characterized in that:
    - each contactor (36) is a piston contactor (36), comprising a stationary portion (37), intended to be connected to a printed circuit board of the antenna, and a moving portion (38) relative to the stationary portion (37), including a contact element (41) designed to cooperate with a respective core (22A) when the socket (10) is connected with the plug (12), and
    - the plug (12) comprises a flexible membrane (42), supporting the contact elements (41) of the piston contactors (36),
    and wherein, for each piston contactor:
    - the stationary portion (37) comprises an electrically insulating hollow cylindrical element (37A), forming a piston body in which the moving part (38) is intended to move axially,
    - the contact element (41) of the moving part (38) comprises a first guide portion (41A), and a second contact portion (41B) designed to cooperate with a respective core (22A) when the socket (10) is connected to the plug (12), and
    - the first guide portion (41A) is generally cylindrical, with a diameter substantially equal to an inner diameter of a hollow cylindrical element (37A), so as to cooperate without play with an inner wall of said hollow cylindrical element (37A),
    And wherein:
    - the socket (10) comprises a bottom wall (21A) in which the openings (21B) are formed,
    - the plug (12) comprises an end-of-travel stop (33A) against which the bottom wall (21A) abuts when the socket (10) is connected to the plug (12),
    - the end-of-travel stop (33A) being provided such that a free space (46) remains between the membrane (42) and the bottom wall (21A) when the socket (10) is connected with the plug (12).
  2. The interface (8) according to claim 1, wherein each piston contactor, in particular the hollow cylindrical element (37A), is sized so as to minimize the cross-talk between the signals passing through said piston contactors, preferably for a cross-talk of less than 45 dB.
  3. The antenna interface (8) according to any one of the preceding claims, wherein the socket (10) comprises a first portion (14), preferably threaded so as to be screwed into a complementary opening of the receiver or screwed to a locknut, and a second threaded portion (16), designed to be screwed in a complementary housing (33) of the plug (12), the first (14) and second (16) threaded portions being axially separated by a flange (18).
  4. The antenna interface (8) according to claim 3, wherein the flange (18) bears, on the side of the first portion (14), a sealing ring (20) designed to cooperate with the contour of the complementary opening of the receiver.
  5. The antenna interface (8) according to claim 3 or 4, wherein the body (27) of the plug (12) generally has a shape of revolution around an axis (X'), the plug (12) comprising a knob (28) freely rotating around the axis (X') relative to the body (27), the knob (28) having a generally hollow cylindrical shape, inwardly tapped, delimiting the complementary housing (33) of the second threaded portion (16) of the socket (10).
  6. The antenna interface (8) according to claim 5, comprising a sealing ring (34), arranged in the housing (33) of the knob (28), between the body (27) and the knob (28).
  7. The antenna interface (8) according to any one of the preceding claims, wherein the socket (10) and the plug (12) comprise complementary means (38) forming a mistake-proofing device, designed to ensure that the contactors (36) cooperate with a respective (22) core (22A) when the plug (12) and socket (10) are connected.
EP11727249.2A 2010-05-20 2011-05-20 Antenna interface for a radio receiver Active EP2572406B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1002131A FR2960348B1 (en) 2010-05-20 2010-05-20 ANTENNA INTERFACE FOR RADIO FREQUENCY STATIONS
PCT/FR2011/051154 WO2011144881A1 (en) 2010-05-20 2011-05-20 Antenna interface for a radio receiver

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EP2572406A1 EP2572406A1 (en) 2013-03-27
EP2572406B1 true EP2572406B1 (en) 2019-08-14

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KR (1) KR20130124456A (en)
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JP2013114830A (en) * 2011-11-28 2013-06-10 Tyco Electronics Japan Kk Waterproof connector, and packaging structure and packaging method of waterproof connector
US9236688B2 (en) * 2013-02-15 2016-01-12 Tyco Electronics Services Gmbh Electrical connectors having differential pairs
US9680268B1 (en) * 2016-05-18 2017-06-13 Itt Manufacturing Enterprises Llc Genderless electrical connectors
CN110277705B (en) * 2019-07-05 2020-12-22 äøŠęµ·čˆŖ天ē§‘å·„ē”µå™Øē ”ē©¶é™¢ęœ‰é™å…¬åø High fault tolerance radio frequency coaxial connector and assembly
CN111628795A (en) * 2020-07-04 2020-09-04 ę·±åœ³åø‚éØęøø通č®Æč®¾å¤‡ęœ‰é™å…¬åø Intercom signal transmission terminal
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US20130072058A1 (en) 2013-03-21
IL223093B (en) 2018-07-31
CN103098309B (en) 2016-03-30
EP2572406A1 (en) 2013-03-27
FR2960348A1 (en) 2011-11-25
MY157605A (en) 2016-06-30
KR20130124456A (en) 2013-11-14
CN103098309A (en) 2013-05-08
US8771012B2 (en) 2014-07-08
WO2011144881A1 (en) 2011-11-24
IL223093A0 (en) 2013-02-03
FR2960348B1 (en) 2013-03-15
JP5727003B2 (en) 2015-06-03
JP2013529363A (en) 2013-07-18

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