EP2467857A1 - Cable de communication de donnees - Google Patents
Cable de communication de donneesInfo
- Publication number
- EP2467857A1 EP2467857A1 EP10761050A EP10761050A EP2467857A1 EP 2467857 A1 EP2467857 A1 EP 2467857A1 EP 10761050 A EP10761050 A EP 10761050A EP 10761050 A EP10761050 A EP 10761050A EP 2467857 A1 EP2467857 A1 EP 2467857A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- group
- pitch
- groups
- pairs
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/04—Cables with twisted pairs or quads with pairs or quads mutually positioned to reduce cross-talk
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1891—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor comprising auxiliary conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0876—Flat or ribbon cables comprising twisted pairs
Definitions
- the present invention relates to data communication cables comprising a plurality of groups of four pairs of individually isolated conductors for high speed data transmission.
- An electrical cable typically includes one or more sets of twisted wires.
- An assembly conventionally consists of two twisted conductive wires. In this case we speak of a pair of conductors.
- Crosstalk refers to the electromagnetic interference between assemblies belonging to the same electric cable.
- Exogenous crosstalk refers to the electromagnetic interference between assemblies belonging to different electrical cables. The phenomenon of crosstalk is frequently a problem for data transmission.
- peaks are undesirable because they increase noise and can lead to an increase in line attenuation along the cable, ie peaks reduce the signal-to-noise ratio and can reduce the throughput. data transmission. It is known to shift the peaks to higher frequencies by decreasing the group assembly pitch.
- the invention aims to remedy these drawbacks.
- the invention thus relates to a data communication cable comprising:
- the final assembly pitch is variable along the cable.
- the cable may not include any sheath other than the outer sheath. Thanks to the absence of ducts surrounding each group, the cable is lighter, less bulky and contains less flammable material.
- the group assembly pitch can also be variable along the cable.
- the final assembly step and / or the group assembly step advantageously varies between two limit values of the same sign.
- the final assembly step and / or the group assembly step may vary according to a periodic function, for example a sinusoidal function.
- the final assembly pitch and / or group assembly pitch may also vary randomly.
- the cable preferably comprises three, four or six groups.
- each group comprises an electrical shielding pair of insulated conductors.
- each group comprises a single electrical shield in the form of a cross.
- the cross can separate the pairs of conductors from each other and surround each pair of conductors.
- FIG. 1 is a sectional view of a cable of the state of the art
- FIG. 2 is a sectional view of a cable according to the invention, according to a first embodiment
- FIG. 3 is a sectional view of a cable according to the invention, according to a second embodiment.
- FIG. 1 A cable of the state of the art is illustrated in FIG. 1.
- the cable of circular section, comprises four groups 1 to 4 of four pairs of insulated conductors, the pairs of which are individually shielded.
- Each conductor comprises a conductive core 6, typically copper, and a peripheral insulation 7.
- the two electrical conductors of each pair are directly helically assembled to each other by twisting and thus have a step called no pairing.
- Each group 1 to 4 of four pairs of insulated conductors is surrounded by a protective sheath 5, generally made of polymer material.
- the assembly formed by the four groups 1 to 4 thus surrounded is itself surrounded by an outer protective sheath 8.
- the cable illustrated in FIGS. 2 and 3 is of circular section. The elements identical to those of Figure 1 bear the same references.
- the cable illustrated in Figure 2 differs from the cable of Figure 1 in that it has no intermediate sheaths surrounding each group of four pairs of insulated conductors. In this embodiment, the cable thus comprises a single sheath 8, which is the outer sheath constituting the outer portion of the cable.
- the non-presence of the intermediate sheaths advantageously makes it possible to limit the weight, the dimensions and the quantity of flammable material in the cable.
- the pitch of each pair of insulated conductors may or may not be constant along the cable.
- Each group 1,2,3,4 may comprise a first pair having a first pairing step, a second pair having a second pair step, a third pair having a third pairing step and a fourth pair having a fourth pairing step.
- the first step of the pairing, the second step of pairing, the third step of pairing and the fourth step of pairing can be different, so as to reduce the crosstalk between the pairs.
- the first step of pairing can be identical in all groups 1,2,3,4.
- the second step of pairing can be identical in all the groups 1,2,3,4
- the third step of pairing can be identical in all the groups 1,2,3,4
- the fourth step of Pairing can be identical in all groups 1,2,3,4.
- Groups 1-4 of four pairs of insulated conductors can be electrically shielded in two different ways.
- a metallic or metallized ribbon 9 is helically ribboned around each pair of insulated conductors. Then, the four individually shielded pairs are helically assembled to form a group. The pitch of the helix formed by the assembly of the four pairs of conductors is called no group assembly. The final helical assembly of the four 1,2,3,4 groups is then carried out. The pitch of the helix formed by the assembly of the four groups 1,2,3,4 of four pairs of conductors is called no final assembly.
- the group assembly step can be the same for all groups 1,2,3,4 or may not be the same for all groups 1,2,3,4.
- the electrical shields of the different pairs of each group 1, 2, 3, 4 are constituted by a central rod 10 in the shape of a cross provided with radial fins, separating the pairs from each other and surrounding each pair, so as to shield each of them.
- a cable provided with such a shield has a very low cross-talk, which makes it compatible with high-speed transmissions. It is also easy and fast to equip a terminal connector, since to access the conductors of the pairs simply draw the cable to a suitable length and to remove the peripheral shield on this length, then to cut the rod 10, which represents a significant time saving. The risk of damaging the conductors or disturbing the arrangement of the pairs is also greatly avoided when mounting the connector.
- peaks are undesirable because they increase noise and can lead to an increase in line attenuation along the cable, ie peaks reduce the signal-to-noise ratio and can reduce the throughput. data transmission.
- a signal reflection peak is observed for a signal frequency of about 650 MHz (and its multiples) and for a frequency about 1300 MHz (and its multiples). Peak at 650 MHz is caused by the group assembly step, while the peak at 1300 MHz is caused by the step of pairing.
- the final assembly pitch varies along the cable. This variation of the pitch of the final assembly makes it possible to avoid periodic variations in the geometry of the cable and thus represents an economical and productive alternative to the reduction of the assembly pitch.
- the final assembly pitch is ideally 600 mm but it creates a peak at 200MHz (and its multiples) and disrupts the data transmission, while the group assembly pitch can be set at 100 mm and create a peak around 1200MHz, beyond the frequency range of the desired application. In this case, the final assembly pitch is varied while keeping the group assembly pitch constant.
- Figures 4 and 5 illustrate two embodiments of variation of the group assembly step along the cable.
- the group assembly pitch is between two limit values, for example between 160 and 200 mm, and varies randomly. Not group assembly is shown as a function of the distance at the end of the cable.
- the group assembly pitch is between two limit values, for example between 160 and 200 mm, and varies sinusoidally, with a random period.
- the group assembly pitch is also shown as a function of the distance at the end of the cable.
- the final assembly step and the group assembly step may each vary randomly, or sinusoidally with a random period.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0955706A FR2949274B1 (fr) | 2009-08-19 | 2009-08-19 | Cable de communication de donnees |
PCT/FR2010/051704 WO2011020967A1 (fr) | 2009-08-19 | 2010-08-12 | Cable de communication de donnees |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2467857A1 true EP2467857A1 (fr) | 2012-06-27 |
Family
ID=41651585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10761050A Withdrawn EP2467857A1 (fr) | 2009-08-19 | 2010-08-12 | Cable de communication de donnees |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120186846A1 (fr) |
EP (1) | EP2467857A1 (fr) |
KR (1) | KR20120041249A (fr) |
CN (2) | CN105321624A (fr) |
FR (1) | FR2949274B1 (fr) |
WO (1) | WO2011020967A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014000897A1 (de) | 2014-01-23 | 2015-07-23 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Kabelanordnung |
DE202014003291U1 (de) | 2014-04-16 | 2014-07-04 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Kabelanordnung |
US9928943B1 (en) * | 2016-08-03 | 2018-03-27 | Superior Essex International LP | Communication cables incorporating separator structures |
US10121571B1 (en) | 2016-08-31 | 2018-11-06 | Superior Essex International LP | Communications cables incorporating separator structures |
US10276281B1 (en) | 2016-11-08 | 2019-04-30 | Superior Essex International LP | Communication cables with twisted tape separators |
US10068685B1 (en) | 2016-11-08 | 2018-09-04 | Superior Essex International LP | Communication cables with separators having alternating projections |
US9741470B1 (en) | 2017-03-10 | 2017-08-22 | Superior Essex International LP | Communication cables incorporating separators with longitudinally spaced projections |
US10438726B1 (en) | 2017-06-16 | 2019-10-08 | Superior Essex International LP | Communication cables incorporating separators with longitudinally spaced radial ridges |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3408804A (en) * | 1965-11-23 | 1968-11-05 | Int Standard Electric Corp | Random lay in cables |
US3546357A (en) * | 1969-01-03 | 1970-12-08 | Bell Telephone Labor Inc | Cable with fully controllable pair twist length |
FR2446002A1 (fr) * | 1979-01-03 | 1980-08-01 | Cables De Lyon Geoffroy Delore | Cable pour transmission numerique |
US5298680A (en) * | 1992-08-07 | 1994-03-29 | Kenny Robert D | Dual twisted pairs over single jacket |
US5659152A (en) * | 1994-03-14 | 1997-08-19 | The Furukawa Electric Co., Ltd. | Communication cable |
JPH09259655A (ja) * | 1996-03-26 | 1997-10-03 | Hitachi Cable Ltd | 無遮蔽対型ケーブル |
US7154043B2 (en) * | 1997-04-22 | 2006-12-26 | Belden Technologies, Inc. | Data cable with cross-twist cabled core profile |
US6812408B2 (en) * | 1999-02-25 | 2004-11-02 | Cable Design Technologies, Inc. | Multi-pair data cable with configurable core filling and pair separation |
JP2002352636A (ja) * | 2001-05-24 | 2002-12-06 | Furukawa Electric Co Ltd:The | 多対ケーブル |
AU5191801A (en) * | 2001-06-14 | 2002-12-19 | Pirelli Cables Australia Limited | Communications cable provided with a crosstalk barrier for use at high transmission frequencies |
US6624359B2 (en) * | 2001-12-14 | 2003-09-23 | Neptco Incorporated | Multifolded composite tape for use in cable manufacture and methods for making same |
US6794570B2 (en) * | 2002-08-27 | 2004-09-21 | Hon Hai Precision Ind. Co., Ltd. | Bundle twisted-pair cable |
US6875928B1 (en) * | 2003-10-23 | 2005-04-05 | Commscope Solutions Properties, Llc | Local area network cabling arrangement with randomized variation |
US7214884B2 (en) * | 2003-10-31 | 2007-05-08 | Adc Incorporated | Cable with offset filler |
CA2555330C (fr) * | 2004-02-06 | 2012-07-10 | William T. Clark | Cables en faisceau utilisant des schemas de torsion variables entre les sous-cables |
EP1688968A1 (fr) * | 2005-02-04 | 2006-08-09 | Nexans | Câble électrique hélicoidal |
US7465879B2 (en) * | 2005-04-25 | 2008-12-16 | Cable Components Group | Concentric-eccentric high performance, multi-media communications cables and cable support-separators utilizing roll-up designs |
EP1848007A1 (fr) * | 2006-04-19 | 2007-10-24 | Nexans | Câble XDSL |
CN201081801Y (zh) * | 2007-03-16 | 2008-07-02 | 天津有容蒂康通讯技术有限公司 | 一种星绞型数据电缆 |
ES2372994T3 (es) * | 2008-06-02 | 2012-01-30 | Nexans | Cable eléctrico arrollado helicoidalmente. |
-
2009
- 2009-08-19 FR FR0955706A patent/FR2949274B1/fr not_active Expired - Fee Related
-
2010
- 2010-08-12 WO PCT/FR2010/051704 patent/WO2011020967A1/fr active Application Filing
- 2010-08-12 EP EP10761050A patent/EP2467857A1/fr not_active Withdrawn
- 2010-08-12 CN CN201510728234.2A patent/CN105321624A/zh active Pending
- 2010-08-12 KR KR1020127005976A patent/KR20120041249A/ko not_active Application Discontinuation
- 2010-08-12 CN CN2010800361461A patent/CN102473484A/zh active Pending
- 2010-08-12 US US13/388,147 patent/US20120186846A1/en not_active Abandoned
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2011020967A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2949274A1 (fr) | 2011-02-25 |
KR20120041249A (ko) | 2012-04-30 |
FR2949274B1 (fr) | 2012-03-23 |
CN105321624A (zh) | 2016-02-10 |
US20120186846A1 (en) | 2012-07-26 |
WO2011020967A1 (fr) | 2011-02-24 |
CN102473484A (zh) | 2012-05-23 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170627 |