WO2002029938A1 - Systeme d'interconnexion de broches coaxiales - Google Patents

Systeme d'interconnexion de broches coaxiales Download PDF

Info

Publication number
WO2002029938A1
WO2002029938A1 PCT/US2001/028395 US0128395W WO0229938A1 WO 2002029938 A1 WO2002029938 A1 WO 2002029938A1 US 0128395 W US0128395 W US 0128395W WO 0229938 A1 WO0229938 A1 WO 0229938A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
ground
plurahty
signal
legs
Prior art date
Application number
PCT/US2001/028395
Other languages
English (en)
Inventor
Beckous Frank
Original Assignee
Gore Enterprise Holdings, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gore Enterprise Holdings, Inc. filed Critical Gore Enterprise Holdings, Inc.
Publication of WO2002029938A1 publication Critical patent/WO2002029938A1/fr

Links

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
    • 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
    • H01R24/50—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 on a PCB [Printed Circuit Board]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural 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
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515—Connection to a rigid planar substrate, e.g. printed circuit board

Definitions

  • the invention is directed towards a connector for mounting on the surface of a printed circuit board.
  • This invention is used in the interconnection of RF frequency signals from a piece of test equipment, a system back-plane or other signal sources to planar electronic devices, such as PC boards.
  • Such interconnections are known in the art.
  • USP 5,882,210 Embo et al.
  • Siemens teaches one such device.
  • Another type of interconnection for connected miniaturized coaxial connectors onto the surface of a planar device is taught in USP 5,711,676 (Michael III) assigned to the Whitaker Corporation.
  • Yet a further interconnection is taught in European Patent Application EP-A-0 647 985 (Tatebe et al.) assigned to Japan Aviation Electronics Industry Ltd.
  • High-density coaxial interconnect systems are supplied by W.L. Gore & Associates, Newark, DE, under the trade name "UHD". These interconnect systems are provided with female socket connectors connected to a coaxial cable. Elements of the interconnect system are described in USP 5,190,472 (Noltz et al) and in USP 5,194,020 (Noltz), both of which are assigned to W.L. Gore & Associates.
  • the invention provides an improved interconnect system for the connection of coaxial cables to a planar electronic device.
  • the system provides a reduced profile of the interconnect for a surface mounted device; a high frequency (up to 6 GHz), impedance matched, signal path from a source external to the planar device to circuitry located on the planar device with a minimum of amount of signal distortion, and uses a small amount of space.
  • the invention provides a low profile, high frequency signal transition via a coaxial cable connected through socket connectors and pin interposers which are surface mounted to planar devices such as PC boards at any desired position on that planar device. More particularly, the invention provides a connector for the connection of a cable to a printed circuit board with a connector insulating housing having a plurality of signal contacts for connection to a signal- carrying conductor of the cable and a plurality of ground contacts for connection to a ground conductor of the cable. Both the plurality of the signal contacts and the plurahty of ground contacts are disposed within the insulating housing. A rear face with a plurality of openings is formed in the insulating housing.
  • a plurality of signal legs electrically connected to the plurality of signal contacts protrudes out of the rear face.
  • One end of the plurality of signal legs is connectable to a plurahty of signal tracks on a surface of the printed circuit board.
  • a plurality of ground legs connected to the plurality of ground contacts also protrudes from the plurality of openings, one end of the plurahty of ground legs being connectable to a plurahty of ground tracks on the surface of the printed circuit board.
  • a connector according to this invention has a low profile since the front face of the connector is connectable to a mating assembly (to which the cable is attached) and the connection to the signal and ground tracks on the surface of the printed circuit board is made from the rear face of the connector. This reduces the height of the connector and thus the space required by the printed circuit board on which the connector is mounted.
  • the connector of the invention further has a plurahty of bores within the connector insulating housing, and accessible through a front face of the connector insulating housing. These bores are used to access the plurahty of signal contacts and the plurahty of ground contacts by the mating assembly to which the cable is attached.
  • the signal contacts are generally in the form of a pins disposed within the bores.
  • the pins are positioned in a plane substantially parallel to the surface of the printed circuit board. This arrangement of the pins minimizes the height required for the connector.
  • the plurality of signal contacts are concentrically captivated by a dielectric material within a cylindrically shaped one of the plurahty of ground contacts.
  • the combination of the signal contacts, dielectric bead, ground contacts, ground legs, signal legs and connector insulating housing form a surface mounted coaxial connector with a specified characteristic impedance which can be matched to the characteristic impedance of the cable.
  • the plurality of signal legs On emergence from the openings in the rear face of the connector, the plurality of signal legs are positioned to deflect towards the surface of the printed circuit board to make contact with the plurality of signal tracks on the surface of the printed circuit board.
  • the plurahty of ground legs are positioned to deflect on emergence from the plurality of openings to make contact with the plurality of ground tracks.
  • two of the plurahty of ground legs are connected to one of the plurality of ground contacts. This minimizes the number of ground contacts (in the form of ground tracks) on the surface of the printed circuit board. Two of the plurality of ground legs can emerge from at least one of the plurality of openings, and these are connectable to different ones of the plurality of ground tracks.
  • the invention further provides a combination of the connector described above mated with a mating assembly to which the cable is attached.
  • the mating assembly is formed of a mating assembly insulating housing having a plurality of signal contact receptacles and a plurahty of mating assembly shields disposed within the mating assembly insulating housing.
  • the signal contact receptacles are connected to the central conductor of a coaxial cable.
  • the mating assembly shields are connected to an outer shield of the coaxial cable.
  • the mating assembly is provided with a plurality of mating assembly sockets which fit into the bores of the connector such that the pin of the signal contact in the connector fits into the signal contact receptacle of the mating assembly.
  • Figure 1 shows a connector of the invention in use with a mating assembly and a printed circuit board.
  • Figure 2 shows a rear perspective view of the connector according to the invention.
  • Figure 3 shows a sectional view of the connector and mating assembly.
  • Figure 4 shows a typical impedance trace (75pS risetime) for the invention connected to a 20" long mating assembly.
  • Fig. 1 shows a perspective view of the connector 50 of the invention mounted onto an upper surface 11 of a printed circuit board 10.
  • the printed circuit board 10 has signal tracks 12 and ground tracks 14 on the upper surface 11.
  • the signal tracks 12 are connected to signal pads 13 and the ground tracks 14 are connected to ground pads 15.
  • the number and the geometry of the signal tracks 12 and the number and the geometry of the ground tracks 14 shown in Fig. 1 are merely illustrative of the invention and are not limiting in any way.
  • a mating assembly 175 is also shown in Fig. 1.
  • the mating assembly 175 has a plurality of coaxial cables 20 connected and is matable to the connector 50.
  • Fig. 2 shows a perspective view of the rear end of the connector 50.
  • Fig. 3 is a sectional diagram through both the connector 50 and the mating assembly 175.
  • the connector 50 comprises an insulating housing 90 which is made of an insulating material such as a thermoplastic including ULTEM ® and liquid crystal polymers (LCP).
  • a plurality of openings 120 are disposed in a rear face 80 of the insulating housing 90.
  • a plurality of bores 130 are disposed in the front face 85 of the insulating housing 90. In the depicted embodiment of the invention, four openings 120 and four bores 130 are shown but this is not limiting of the invention.
  • a guiding latch 55 is mounted on the top surface of the insulating housing 90 which function will be explained later.
  • the openings 120 lead into the bores 130 within the insulating housing 90 which extend to the front face 85 of the connector 50.
  • the bores 130 are approximately cylindrical in shape and are designed to accept mating assembly sockets 200 attached to the ends of the coaxial cables 20 as is shown in Fig. 3.
  • the mating assembly 175 also has an insulating housing 210 made of a plastic material such as the ones from which the insulating housing 90 of the connector 50 is made.
  • the plurahty of coaxial cables 20 is shown entering the rear face 80 of the mating assembly 175.
  • the coaxial cable 20 has a jacket 22 disposed about an outer shield 24.
  • the outer shield 24 is disposed about an inner insulation 26.
  • a central conductor 28 which carries the signal is placed within the inner insulation 26.
  • a mating assembly shield 190 is placed in the mating assembly insulating housing 210 and is electrically connected to the outer shields 24 of the plurality of coaxial conductors 20.
  • the plurahty of mating assembly sockets 200 in the mating assembly 175 are electrically connected to the central conductors 28 of the coaxial conductors 20.
  • the mating assembly 175 has furthermore a guiding groove 177 into which the guiding latch 55 mounted on the connector 50 fits (see Fig. 1).
  • a cylindrically-shaped ground contact 110 made of a conducting material such as phosphor bronze, copper or beryllium-copper alloy is placed inside the bores 130.
  • the ground contact 110 has towards the front face 85 of the bore 130 a taper 150 which is also made of a conducting material and is integral with the ground contact 110 on the inside surface 140 (as shown in Fig. 3).
  • the ground contact 110 contacts the mating assembly shield 190 disposed within the insulating housing 210 connected to the coaxial cable 20.
  • the taper 150 is designed to resiliently hold the mating assembly 175 inserted into the insulating housing 90 with a sufficiently high extraction force to prevent accidental removal of the mating assembly 175 from the insulating housing 90.
  • ground legs 70', 70" emerge from the opening 120 and are electrically and mechanically connected to the ground contact 110. As can be seen from Fig. 2, the ground legs 70', 70" are circumferentially spaced at approximately 70° from each other . The ground legs 70', 70" emerge perpendicularly from the rear face 80 of the insulating housing and are deflected downwards onto the ground pads 15 such that a lower surface 72 of the ground legs 70', 70" touches the upper surface 74 of the ground pads 15.
  • the ground legs 70', 70” can be made of the same conducting materials as the ground contact 100.
  • the ground legs 70', 70" are attached by means of solder or a conducting adhesive 75 to the ground pads 15.
  • a signal contact 100 in the form of a pin made of a conducting material such as the ones listed above is placed in the center of the bore 130.
  • the signal contact 100 is held in place by means of a dielectric material 160 such as polytetrafLuoroethylene, Torlon®, Ultem® or other appropriate engineering plastic.
  • the signal contact 100 connects a signal contact receptacle 30 of the mating assembly 175 to the coaxial cable 20.
  • the signal contact 100 is electrically and mechanically connected to a signal leg 60 which emerges through the dielectric material 160 perpendicularly from the rear face 80 of the insulating housing 90 and is deflected downwards onto the signal pads 13 such that a lower surface 62 of the signal legs 60 touches the upper surface 64 of one of the signal pads 13.
  • the signal legs 60 can be made of the same conducting materials as the ground contact 110.
  • the signal legs 60 are attached to the signal pads by means of solder or a conducting adhesive 65.
  • ground legs 70' and 70" are attached commonly to one ground pad 15. It would be possible to attach the ground legs 70', 70" to different ground pads 15. In this embodiment, it will be noted that out of each opening 120 two ground legs 70', 70" emerge. It would be possible for each opening 120 to have a single ground leg 70.
  • Fig. 3 shows a cut away view of the mating assembly 175.
  • One of the plurality of coaxial cables 20 is shown entering the rear face -180 of the mating assembly 175.
  • the coaxial cable 20 has a jacket.22 disposed about an outer shield 24.
  • the outer shield 24 is disposed about an inner insulation 26.
  • a central conductor 28 which carries the signal is placed within the inner insulation 26.
  • the mating assembly 175 has a mating assembly insulating housing 210 in which is placed a mating assembly shield 190 which is electrically connected to the outer shields 24 of the plurality of coaxial conductors 20.
  • the mating assembly 175 further has a plurahty of mating assembly sockets 200 which are electrically connected to the central conductors 28 of the coaxial conductors 20.
  • the mating assembly has a guiding groove 177 into which a guiding latch 55 mounted on the connector 50 fits.
  • the center of each bore is 2.49+.0.02 cm above the upper surface 11 of the printed circuit board
  • Embodiments have been made with gangable 1x4 and 1x8 headers. However, other embodiments are conceivable.
  • the insertion and extraction forces for a 1x4 header is in the range of 0.15 to 0.4 lbs .

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

L'invention concerne un connecteur (50) servant à connecter un fil coaxial (20) à une carte de circuit imprimé (10). Ledit connecteur (50) comprend un logement d'isolation (90) pourvu d'une pluralité de contacts de signaux (100) et d'une pluralité de contacts à la masse (110). Les contacts de signaux (100) sont connectés au conducteur porteur de signaux (30) du fil (20) et les contacts à la masse sont connectés au conducteur à la masse (14) du fil (20). Une pluralité d'ouvertures (120) est formée dans la surface arrière (80) du logement d'isolation (90), et une pluralité de colonnes de signaux (60) électriquement connectées à la pluralité de contacts de signaux (100) ressort de la pluralité des ouvertures (120). On peut connecter une extrémité desdites colonnes (60) aux impressions conductrices des signaux (12) sur la carte de circuit imprimé (10). De manière similaire, une pluralité de colonnes à la masse (70', 70'') connectée à la pluralité de contacts à la masse (110) ressort de la pluralité d'ouvertures (120). On peut connecter une extrémité de la pluralité des colonnes à la masse (70', 70'') aux impressions conductrices des signaux (14) de ladite carte (10). Un ensemble d'appariement (175) est intégré au connecteur (50) qui engendre une fréquence élevée, une interconnexion à profil bas entre le fil coaxial (20) et la carte de circuit imprimé (10).
PCT/US2001/028395 2000-10-02 2001-09-12 Systeme d'interconnexion de broches coaxiales WO2002029938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67747300A 2000-10-02 2000-10-02
US09/677,473 2000-10-02

Publications (1)

Publication Number Publication Date
WO2002029938A1 true WO2002029938A1 (fr) 2002-04-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/028395 WO2002029938A1 (fr) 2000-10-02 2001-09-12 Systeme d'interconnexion de broches coaxiales

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WO (1) WO2002029938A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004049513A1 (fr) * 2002-11-22 2004-06-10 Tyco Electronics Corporation Connecteur de carte de circuit imprime comprenant une protection dielectrique monobloc
US7445471B1 (en) 2007-07-13 2008-11-04 3M Innovative Properties Company Electrical connector assembly with carrier
EP2528170A1 (fr) * 2011-05-27 2012-11-28 EchoStar Technologies L.L.C. Connecteur à broche de signal à montage en surface
CN112151990A (zh) * 2020-08-24 2020-12-29 东风电驱动系统有限公司 一种插接式起动机自动试验的接线工装
CN112713445A (zh) * 2021-01-27 2021-04-27 四川华丰科技股份有限公司 网电混合复合玻璃烧结水密连接器及复合玻璃成型工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197893A (en) * 1990-03-14 1993-03-30 Burndy Corporation Connector assembly for printed circuit boards
EP0555933A1 (fr) * 1992-02-14 1993-08-18 Berg Electronics Manufacturing B.V. Connecteur coaxial modulaire pour montage sur une plaquette à circuits imprimés
DE19716139C1 (de) * 1997-04-17 1998-06-18 Siemens Ag Mehrfach-Koaxial-Steckverbinderteil
EP0893843A1 (fr) * 1997-07-21 1999-01-27 Molex Incorporated Connecteur coaxial modulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197893A (en) * 1990-03-14 1993-03-30 Burndy Corporation Connector assembly for printed circuit boards
EP0555933A1 (fr) * 1992-02-14 1993-08-18 Berg Electronics Manufacturing B.V. Connecteur coaxial modulaire pour montage sur une plaquette à circuits imprimés
DE19716139C1 (de) * 1997-04-17 1998-06-18 Siemens Ag Mehrfach-Koaxial-Steckverbinderteil
EP0893843A1 (fr) * 1997-07-21 1999-01-27 Molex Incorporated Connecteur coaxial modulaire

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004049513A1 (fr) * 2002-11-22 2004-06-10 Tyco Electronics Corporation Connecteur de carte de circuit imprime comprenant une protection dielectrique monobloc
US6821150B2 (en) 2002-11-22 2004-11-23 Tyco Electronics Corporation Connector assembly having dielectric cover
US7445471B1 (en) 2007-07-13 2008-11-04 3M Innovative Properties Company Electrical connector assembly with carrier
EP2528170A1 (fr) * 2011-05-27 2012-11-28 EchoStar Technologies L.L.C. Connecteur à broche de signal à montage en surface
CN112151990A (zh) * 2020-08-24 2020-12-29 东风电驱动系统有限公司 一种插接式起动机自动试验的接线工装
CN112713445A (zh) * 2021-01-27 2021-04-27 四川华丰科技股份有限公司 网电混合复合玻璃烧结水密连接器及复合玻璃成型工艺
CN112713445B (zh) * 2021-01-27 2023-04-07 四川华丰科技股份有限公司 网电混合复合玻璃烧结水密连接器及复合玻璃成型工艺

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