EP0708501A1 - Connecteur pour câbles à pairs torsadées non-blindées - Google Patents

Connecteur pour câbles à pairs torsadées non-blindées Download PDF

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Publication number
EP0708501A1
EP0708501A1 EP94307606A EP94307606A EP0708501A1 EP 0708501 A1 EP0708501 A1 EP 0708501A1 EP 94307606 A EP94307606 A EP 94307606A EP 94307606 A EP94307606 A EP 94307606A EP 0708501 A1 EP0708501 A1 EP 0708501A1
Authority
EP
European Patent Office
Prior art keywords
connector
section
connector according
wires
conductive members
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.)
Granted
Application number
EP94307606A
Other languages
German (de)
English (en)
Other versions
EP0708501B1 (fr
Inventor
Constance Renee Pallas
Clifford Lawrence Winings
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.)
AT&T Corp
Original Assignee
AT&T Corp
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
Priority claimed from US08/263,111 external-priority patent/US5562479A/en
Priority to GB9417114A priority Critical patent/GB2282712B/en
Priority to JP6205842A priority patent/JPH07220778A/ja
Application filed by AT&T Corp filed Critical AT&T Corp
Priority to DE69422289T priority patent/DE69422289D1/de
Priority to EP94307606A priority patent/EP0708501B1/fr
Priority to CA002134697A priority patent/CA2134697C/fr
Priority to TW83110137A priority patent/TW315533B/zh
Publication of EP0708501A1 publication Critical patent/EP0708501A1/fr
Publication of EP0708501B1 publication Critical patent/EP0708501B1/fr
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/778—Coupling parts carrying sockets, clips or analogous counter-contacts
    • 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
    • H01R13/6461—Means for preventing cross-talk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
    • H01R12/675—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals with contacts having at least a slotted plate for penetration of cable insulation, e.g. insulation displacement contacts for round conductor flat cables
    • 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

Definitions

  • This invention relates to electrical connectors.
  • Connectors of the type known as miniature ribbon style or telco connectors are typically used to provide electrical contact between cables including a plurality of unshielded twisted wire pairs.
  • Such connectors usually comprise an insulative housing which includes two rows of contacts. One end of the contacts provides either a male or female mating section for electrical connection with another connector. The opposite ends of the contacts are formed into insulation displacement contacts which pierce the insulation of the twisted wire pairs to provide electrical contact thereto.
  • the wire pairs are attached so that each wire in a pair is coupled to a different row of the array of contacts, and so that the wires rest in an essentially horizontal direction (i.e., parallel to the contacts). (See, e.g., U.S. Pat. No. 4,350,404.)
  • the invention is an electrical connector comprising an insulative housing and a plurality of conductive members mounted therein. In one section, one end of each member is adapted for mating with another connector and in a second section an opposite end is adapted for providing electrical contact.
  • the second section of the connector includes conductors formed in side-by-side alignment to provide crosstalk of a polarity which is opposite to that produced by the first section.
  • the connector, 10, in accordance with one embodiment, includes an insulating housing, 11, typically made of plastic. Mounted within the housing is an array of conductive members, e.g., 12, 13, 70 and 71. The conductive members are typically mounted within the housing in two rows. Each conductive member, e.g., 12, includes two opposite end portions. One end portion, e.g., 14, of each conductive member is shaped so as to form a mating section which is adapted for receiving and electrically contacting a similar plug-type connector (e.g., FIGS. 6-8).
  • the opposite end portions, e.g., 15, are shaped to form insulation displacement contacts for electrically contacting wires, e.g., 16, from a cable, 17, which typically includes a plurality of twisted wire pairs.
  • the conductive members are arranged so that opposite members, e.g., 12 and 13, in different rows contact the wires (16 and 18) of the twisted pairs (see FIG. 3).
  • the conductive members e.g., 12 and 13
  • the conductive members are bent inward so that the vertical distance, d , between the two rows of conductive elements at the contact portions (e.g., 15) is less than the vertical distance, S, at the mating portions (e.g., 14).
  • d will be less than one-half of S. This configuration is advantageous for reasons to be discussed.
  • a mandrel, 20, is mounted within the housing, 11, adjacent to the contact portions (e.g, 15) of the conductive elements (e.g., 12 and 13) adjacent to the contact portions (e.g., 12 and 13) adjacent to the contact portions (e.g., 12 and 13).
  • the mandrel has been omitted from the view of FIG. 3 for purposes of illustrating the placement of the contact portions of the conductive elements.
  • the mandrel, 20, is made of an insulating material such as plastic, and is typically rectangular in cross section, but could be a variety of shapes.
  • the mandrel extends essentially the full length of the connector and, desirably, includes a pair of slots 21 ad 22 to accommodate the contact portions (e.g., 15) of both rows of the conductive elements (e.g., 12 and 13).
  • the top, bottom and left-hand surfaces of the mandrel as viewed in FIG. 2 may also include grooves, e.g., 23, for positioning wires
  • the width, w , and other dimensions of the mandrel, 20, play an important part in reducing the crosstalk of the connector. It is known that the mating sections of the conductive elements will produce a certain amount of crosstalk in the form of an induced voltage with one polarity, hereinafter referred to as "positive" crosstalk. However, the wires, e.g., 16 and 18, coupled to the contact portions are aligned side-by-side on the surface of the mandrel, 20, for a certain predetermined length ( w+x+y+z ). This alignment will produce a crosstalk in the form of induced voltage of the opposite polarity to that of the mating section crosstalk ("negative" crosstalk).
  • M xy (in nH)
  • M xy 5L ln 1 r + 1 + 1 r 2 - 1 + r 2 + r
  • L is the conductor length in the section (in inches)
  • r is the distance from conductor x to conductor y divided by the conductor length (L).
  • the capacitance value (C m ) is a function of the conductor shapes, spacings and lengths as well as the dielectric constants of the materials surrounding the conductors. Formulas are available for simple geometries (see, e.g., Charles S. Walker, Capacitance, Inductance and Crosstalk Analysis , (Artech House, 1990), pp. 66-71.
  • the near end crosstalk induced in an idle pair of conductors in any section by another pair of conductors is the sum of the inductive and capacitive crosstalk.
  • the total near-end crosstalk in an idle pair in a section is calculated by the standard power sum method.
  • each section of the connector will exhibit a different amount of crosstalk.
  • the value of the crosstalk in the mandrel section will be negative when calculated according to the above.
  • the appropriate dimensions may also be determined empirically by measuring the crosstalk for various dimensions.
  • the crosstalk in the conductive members was 39.5 dB between adjacent pairs at 100 MHz, while the crosstalk of the mandrel section was 40 dB of opposite polarity.
  • a hood element, 30, snaps onto the housing, 11, to secure the mandrel, 20, in the housing and to provide a compartment for the twisted wire pairs 31.
  • the wire pairs exit the hood where they are formed into one or more cables 17.
  • the hood element is also, typically, made of plastic.
  • FIGS. 6-8 show an alternative embodiment of the invention.
  • an insulative housing, 40 includes two rows of conductive elements, e.g., 41 and 42, mounted therein.
  • each conductive element includes a mating portion, 43, at one end and an insulation displacement contact portion, 44, at the opposite end.
  • the mating portions form a plug connector which can fit, for example, into the receptacle connector of FIGS. 1-5.
  • this embodiment can also be formed into a receptacle connector by appropriately shaping the mating portions as in FIGS. 1-2.
  • the mandrel, 50 includes two parts, 51 and 52, with undulating surfaces which are complementary so that the parts fit together while allowing a meandering path for the wires, e.g., 60 and 61, from the twisted pair cable (not shown).
  • One wire, e.g., 60, from each pair is connected to a conductive member, e.g., 42, in the bottom row, and the other wire, e.g., 61, from the pair is connected to a conductive member, e.g., 41, in the top row. (See also FIG. 8 where the mandrel has been removed for purposes of illustration.)
  • the wires will extend for a predetermined length in a side-by-side alignment determined by experiment or calculated from the equations above in order to compensate for the crosstalk generated by the mating portion of the conductive members.
  • the predetermined length is established by the path length of the undulating surfaces of the two parts 51 and 52.
  • the path length is approximately 3.3 cm, but in general would range from 2.5-4.0 cm.
  • a hood (not shown) snaps onto the housing in order to hold the mandrel and the twisted wire pairs.
  • the invention has been described for cables including twisted wire pairs, it is also advantageous for any cable including balanced wire pairs. Also, while the wires are preferably perpendicular to the conductive members to produce a short connection, the invention may also be used where the wires are oriented at other angles, including the case where the wires are parallel to the conductive members at the point of contact.
  • wires need not be equally spaced from each other as shown in FIG. 4. Rather, varying the distance between wires can produce a greater negative crosstalk. In general, it is advantageous to have a distance between wires in a pair (e.g., 16, 18) at least equal to one-half the distance from the centerline of one pair (16, 18) to the centerline of an adjacent pair (72, 73).
  • each wire can also be used to control the amount of negative crosstalk.
  • the invention in its broadest form is directed to providing a section of a connector which has a crosstalk of a polarity opposite to that of the mating portion of the connector.
  • the use of a mandrel in that "compensation" section to keep the wires in side-by-side alignment is an advantageous embodiment of that principle.
  • a similar effect could be produced as illustrated by the connector shown in FIGS. 9 and 10, where elements similar to FIGS. 1-5 are similarly numbered.
  • the conductive members themselves, e.g., 12, 13, 70 and 71, are bent so that they are in side-by-side alignment for some predetermined distance (w).
  • the conductive members e.g., 12 and 13
  • the conductive members are insert molded into separate plastic members, 24 and 25, which plastic members are held together in the connector housing 11.
  • the conductive members need not be in perfect side-by-side alignment to produce a sufficient negative crosstalk as discussed regarding the previous embodiments.
  • all the conductive members could be molded into a single plastic member.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP94307606A 1993-08-31 1994-10-17 Connecteur pour câbles à pairs torsadées non-blindées Expired - Lifetime EP0708501B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9417114A GB2282712B (en) 1993-08-31 1994-08-24 Electrical connectors for minimizing cross-talk
JP6205842A JPH07220778A (ja) 1993-08-31 1994-08-31 非遮蔽より線対ケーブル用コネクタ
DE69422289T DE69422289D1 (de) 1994-10-17 1994-10-17 Verbinder für ungeschirmte verdrillte Kablepaare
EP94307606A EP0708501B1 (fr) 1993-08-31 1994-10-17 Connecteur pour câbles à pairs torsadées non-blindées
CA002134697A CA2134697C (fr) 1994-06-21 1994-10-31 Connecteur pour paires de fils cables non blindes
TW83110137A TW315533B (fr) 1994-08-24 1994-11-03

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11481593A 1993-08-31 1993-08-31
US08/263,111 US5562479A (en) 1993-08-31 1994-06-21 Connector for unshielded twisted wire pair cables
EP94307606A EP0708501B1 (fr) 1993-08-31 1994-10-17 Connecteur pour câbles à pairs torsadées non-blindées

Publications (2)

Publication Number Publication Date
EP0708501A1 true EP0708501A1 (fr) 1996-04-24
EP0708501B1 EP0708501B1 (fr) 1999-12-22

Family

ID=27236211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94307606A Expired - Lifetime EP0708501B1 (fr) 1993-08-31 1994-10-17 Connecteur pour câbles à pairs torsadées non-blindées

Country Status (3)

Country Link
EP (1) EP0708501B1 (fr)
JP (1) JPH07220778A (fr)
GB (1) GB2282712B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869587A3 (fr) * 1997-03-05 1999-04-14 KRONE Aktiengesellschaft Configuration de paires de contacts pour réduire la diaphonie
EP0939455A3 (fr) * 1998-02-27 2000-01-26 Lucent Technologies Inc. Connecteur à diaphonie minimale
US10188458B2 (en) 2013-04-24 2019-01-29 Koninklijke Philips N.V. Inductive disturbance reduction device
CN115101985A (zh) * 2022-06-09 2022-09-23 番禺得意精密电子工业有限公司 电连接组件

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269941A (en) * 1992-08-20 1994-02-23 Hubbell Inc Connector for communications systems with cancelled crosstalk
GB2270422A (en) * 1992-09-04 1994-03-09 Pressac Ltd Crosstalk cancellation in connecting systems for connecting electronic equipment to a communication system
WO1994008365A2 (fr) * 1992-09-30 1994-04-14 Porta Systems Corp. Cablage de connexion comprenant un connecteur a compensation de diaphonie

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6431361A (en) * 1987-07-15 1989-02-01 Minnesota Mining & Mfg Electric connection connector
US5299956B1 (en) * 1992-03-23 1995-10-24 Superior Modular Prod Inc Low cross talk electrical connector system
GB2273397B (en) * 1992-11-16 1997-01-29 Krone Ag Electrical connectors
GB2271678B (en) * 1993-12-03 1994-10-12 Itt Ind Ltd Electrical connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269941A (en) * 1992-08-20 1994-02-23 Hubbell Inc Connector for communications systems with cancelled crosstalk
GB2270422A (en) * 1992-09-04 1994-03-09 Pressac Ltd Crosstalk cancellation in connecting systems for connecting electronic equipment to a communication system
WO1994008365A2 (fr) * 1992-09-30 1994-04-14 Porta Systems Corp. Cablage de connexion comprenant un connecteur a compensation de diaphonie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869587A3 (fr) * 1997-03-05 1999-04-14 KRONE Aktiengesellschaft Configuration de paires de contacts pour réduire la diaphonie
US6017247A (en) * 1997-03-05 2000-01-25 Krone Aktiengesellschaft Arrangement of contact pairs for compensation of near-end crosstalk
EP0939455A3 (fr) * 1998-02-27 2000-01-26 Lucent Technologies Inc. Connecteur à diaphonie minimale
US6116965A (en) * 1998-02-27 2000-09-12 Lucent Technologies Inc. Low crosstalk connector configuration
US10188458B2 (en) 2013-04-24 2019-01-29 Koninklijke Philips N.V. Inductive disturbance reduction device
CN115101985A (zh) * 2022-06-09 2022-09-23 番禺得意精密电子工业有限公司 电连接组件

Also Published As

Publication number Publication date
GB2282712B (en) 1997-09-10
GB9417114D0 (en) 1994-10-12
EP0708501B1 (fr) 1999-12-22
JPH07220778A (ja) 1995-08-18
GB2282712A (en) 1995-04-12

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