EP0871182A1 - Câble plat de transmission de signaux à haut debit - Google Patents
Câble plat de transmission de signaux à haut debit Download PDFInfo
- Publication number
- EP0871182A1 EP0871182A1 EP98400863A EP98400863A EP0871182A1 EP 0871182 A1 EP0871182 A1 EP 0871182A1 EP 98400863 A EP98400863 A EP 98400863A EP 98400863 A EP98400863 A EP 98400863A EP 0871182 A1 EP0871182 A1 EP 0871182A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductors
- pair
- wires
- cable
- conductor
- 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
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Classifications
-
- 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
- H01B7/0009—Details relating to the conductive cores
-
- 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
- H01B7/0823—Parallel wires, incorporated in a flat insulating profile
Definitions
- the present invention relates to a flat cable of high-speed signal transmission comprising at least one pair of conductive wires.
- a ribbon cable in which the positioning of the conductive wires relative to the others may be better.
- a profile is made with ribs which delimit grooves.
- the surface of grooves and profiles is coated with a member ground conductor, and insulated conductors are housed in the gorges due to a common thread throat.
- the grooves are then closed, preferably by a additional conductive member. So each wire conductor can be considered as screened separately.
- the invention aims to allow the use of flat cables for the realization of local networks having great lengths, of the order of 100 m, with flow rates high, at frequencies up to 100 MHz.
- the invention implements means which reduce the capacitive effects of shielded flat cables, on the one hand, by twisting each solid conductor and, on the other hand, by association of the conductors of each pair so let them be closer to each other than sons conductors of other pairs.
- the capacitive effects presented by each conductor with respect to the ground plane are compensated by using twisted conductors each on himself. Then the cross-talk effects between conductors of different pairs are reduced by more great closeness of conductors of the same pair as conductors belonging to different pairs.
- the subject of the invention is a flat cable of high speed signal transmission comprising at least a pair of conductor wires each having a conductor and an insulator, a profile having at least one delimited groove by ribs, and a mass conducting member placed at the less on the surface of each groove, characterized in that it has two individually twisted conductors, each one on itself with a step much less than the length wave corresponding to the frequency of the signals to transmit, and thus kept juxtaposed in the same throat.
- the pitch of twist varies from one conductor to another by the same pair and / or along the length of each thread, but it is always between 10 and 50 mm.
- the conductive member of mass is a metallic ribbon surrounding each pair.
- the mass conducting member is a coating on the surface of grooves and ribs, for example formed by electroplating.
- the cable is such that the spacing of the two conductors of the same pair is significantly less than half the wire spacing conductors of different pairs.
- the average distance between a conductor and a ground plane can be constant over the entire length of the common thread, and the capacities formed by each conductor with the ground plane have the same value, if although the capacitive crosstalk phenomena are deleted or at least significantly reduced.
- the torsional pitch must be much lower at the wavelength at the frequencies used.
- a twisting pitch of less than 50 mm for the transmission of signals whose frequency reaches 100 MHz, a twisting pitch of less than 50 mm.
- the driver has been twisted.
- this twist is introduced at the time where the conductor is made.
- the twist is given to the conductive wire, already having the insulation, for example at the entrance to a wire laying machine conductors in a cable profile according to the invention.
- the conductor is preferably made of copper, having preferably 0.5 to 0.65 mm in diameter, and the wire conductor, including insulation, has a diameter of 1.2 to 2 mm, the insulation being made for example of polyethylene solid or cellular or any other material having a low dielectric constant (less than 3.5) and an angle loss less than 0.01 to 100 MHz.
- Figure 1 shows a profile 10, for example formed from extruded polyvinyl chloride, which defines ribs 12 between which grooves are formed 14 intended to each house two conducting wires.
- the profile has four grooves intended to accommodate four pairs of wires.
- it can include any number of grooves, and therefore pairs, a cable for local network can include two for example.
- the grooves 14 include a conductive coating 16 which can be formed an added aluminum sheet, or a metallization performed for example by electroplating with ink conductive or by vacuum metallization.
- Leaf metallic or metallized polyester 18 is placed on the conducting wires 20 so that these are shielded.
- a sheath 22 surrounds the profile and the conducting wires. The total thickness of the cable is 2 to 3 mm in the example considered.
- the two conducting wires of each pair are grouped in a single groove.
- the throat width is such that the two threads of the pair are tight against each other.
- the conductors are individually twisted on themselves at a short twist, which varies from one of conductors to each other of the same pair and / or on their length. In this way, at each location of the cable length, the two conductors of each pair have a different step. Two conductors of the same pair are thus juxtaposed in the same groove, to give a better symmetry along their length and thus avoid crosstalk problems created by imbalances in the Earth.
- each pair of lead wires could be coated with conductive tape 24, for example polyester metallized with aluminum, forming a conductive member mass, so that aluminum foil or metallization 16 on the one hand, and the metallic or polyester sheet metallized 18 on the other hand, which are represented in Figure 2 is no longer required.
- the flat cables according to the invention have the advantage, given by all the flat cables, of being able to be connected by a connection with insulation displacement contacts which requires only a very short time to connect the various connected devices and accessories. Furthermore, when the cable has the arrangement shown in FIG. 1, that is to say when the two conductors of a pair are closer than those of adjacent pairs, the insulation displacement contacts intended to come and cooperate with two conductors of a pair are closer than contacts which cooperate with the conductors of pairs adjacent. In this way, the crosstalk phenomena at level of connectivity can be further reduced.
- the flat cable according to the invention when it has the features listed above, can be used for the installation of local networks conforming to specifications of class D networks according to standards ISO / IEC 11801 and EN 50173, i.e. usable on distances of the order of 100 m at frequencies of 100 MHz.
- the twist pitch of each conductor on itself is then between 10 and 50 mm.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
Description
Claims (6)
- Câble plat de transmission de signaux à haut débit, comportant au moins une paire de fils conducteurs (20) ayant chacun un conducteur et un isolant, un profilé (10) ayant au moins une gorge (14) délimitée par des nervures (12), et un organe conducteur de masse (16) placé au moins à la surface de chaque gorge, caractérisé en ce qu'il comporte deux fils conducteurs (20) torsadés individuellement, chacun sur lui-même avec un pas très inférieur à la longueur d'onde correspondant à la fréquence des signaux à transmettre, et ainsi maintenus juxtaposés dans la même gorge (14).
- Câble selon la revendication 1, destiné à la transmission de signaux dont la fréquence est de l'ordre de 100 MHz ou moins, caractérisé en ce que le pas de torsion de chaque fil conducteur est compris entre 10 et 50 mm.
- Câble selon l'une des revendications 1 et 2, caractérisé en ce que le pas de torsion varie de l'un des fils conducteurs à l'autre de la même paire et/ou sur la longueur de chaque fil conducteur, en étant toujours compris entre 10 et 50 mm.
- Câble selon l'une des revendications 1 à 3, caractérisé en ce que l'organe conducteur de masse (24) est un ruban métallisé entourant chaque paire.
- Câble selon l'une des revendications 1 à 3, caractérisé en ce que l'organe conducteur de masse (16) est un revêtement de la surface des gorges et des nervures.
- Câble selon l'une quelconque des revendications 1 à 5, comportant au moins deux paires de fils conducteurs, caractérisé en ce que l'espacement des deux fils conducteurs de la même paire est inférieur sensiblement à la moitié de l'espacement des fils conducteurs de paires différentes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9704403A FR2762133B1 (fr) | 1997-04-10 | 1997-04-10 | Fil conducteur, cable le contenant, et appareil pour sa fabrication |
FR9704403 | 1997-04-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0871182A1 true EP0871182A1 (fr) | 1998-10-14 |
EP0871182B1 EP0871182B1 (fr) | 2001-10-04 |
Family
ID=9505736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400863A Expired - Lifetime EP0871182B1 (fr) | 1997-04-10 | 1998-04-09 | Câble plat de transmission de signaux à haut debit |
Country Status (5)
Country | Link |
---|---|
US (1) | US6043434A (fr) |
EP (1) | EP0871182B1 (fr) |
DE (1) | DE69801857T2 (fr) |
DK (1) | DK0871182T3 (fr) |
FR (1) | FR2762133B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103236313A (zh) * | 2012-04-12 | 2013-08-07 | 江苏亨通线缆科技有限公司 | 抗静电型室内高速数据电缆 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6255593B1 (en) * | 1998-09-29 | 2001-07-03 | Nordx/Cdt, Inc. | Method and apparatus for adjusting the coupling reactances between twisted pairs for achieving a desired level of crosstalk |
JP3952438B2 (ja) * | 2001-01-17 | 2007-08-01 | 矢崎総業株式会社 | 電磁波シールド処理構造 |
DE10260242A1 (de) * | 2002-12-20 | 2004-07-22 | Siemens Ag | Schaltungsmodul für Kraftfahrzeuge |
US20040188130A1 (en) * | 2003-03-28 | 2004-09-30 | Humberto Herrera | Method and apparatus for dressing substantially parallel cables |
DE10357271B3 (de) * | 2003-12-05 | 2005-02-03 | W.E.T. Automotive Systems Ag | Elektrische Schaltleiste |
JP2012531017A (ja) * | 2009-06-19 | 2012-12-06 | スリーエム イノベイティブ プロパティズ カンパニー | 遮蔽された電気ケーブル |
US9685259B2 (en) | 2009-06-19 | 2017-06-20 | 3M Innovative Properties Company | Shielded electrical cable |
WO2012154256A1 (fr) * | 2011-02-17 | 2012-11-15 | Advanced Bionics Ag | Construction de fils |
US9799426B2 (en) | 2012-11-08 | 2017-10-24 | 3M Innovative Properties Company | Ribbed high density electrical cable |
KR20150095710A (ko) * | 2012-12-06 | 2015-08-21 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 차폐 케이블 |
JP6939704B2 (ja) * | 2018-05-25 | 2021-09-22 | 株式会社オートネットワーク技術研究所 | 配線部材 |
CN215730934U (zh) * | 2021-04-01 | 2022-02-01 | 泰科电子(上海)有限公司 | 组合线缆 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3584132A (en) * | 1966-11-25 | 1971-06-08 | Western Electric Co | Multiconductor transmission media |
US3663739A (en) * | 1970-10-26 | 1972-05-16 | Du Pont | Uniform flat cables |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4155613A (en) * | 1977-01-03 | 1979-05-22 | Akzona, Incorporated | Multi-pair flat telephone cable with improved characteristics |
US4321425A (en) * | 1979-02-02 | 1982-03-23 | Emmel Leroy L | Lattice cable and composite dielectric transmission line and method of making same |
US4481379A (en) * | 1981-12-21 | 1984-11-06 | Brand-Rex Company | Shielded flat communication cable |
US4777325A (en) * | 1987-06-09 | 1988-10-11 | Amp Incorporated | Low profile cables for twisted pairs |
US5767441A (en) * | 1996-01-04 | 1998-06-16 | General Cable Industries | Paired electrical cable having improved transmission properties and method for making same |
US5821467A (en) * | 1996-09-11 | 1998-10-13 | Belden Wire & Cable Company | Flat-type communication cable |
-
1997
- 1997-04-10 FR FR9704403A patent/FR2762133B1/fr not_active Expired - Fee Related
-
1998
- 1998-04-09 DK DK98400863T patent/DK0871182T3/da active
- 1998-04-09 EP EP98400863A patent/EP0871182B1/fr not_active Expired - Lifetime
- 1998-04-09 US US09/057,544 patent/US6043434A/en not_active Expired - Fee Related
- 1998-04-09 DE DE69801857T patent/DE69801857T2/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3584132A (en) * | 1966-11-25 | 1971-06-08 | Western Electric Co | Multiconductor transmission media |
US3663739A (en) * | 1970-10-26 | 1972-05-16 | Du Pont | Uniform flat cables |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103236313A (zh) * | 2012-04-12 | 2013-08-07 | 江苏亨通线缆科技有限公司 | 抗静电型室内高速数据电缆 |
CN103236313B (zh) * | 2012-04-12 | 2015-10-28 | 江苏亨通线缆科技有限公司 | 抗静电型室内高速数据电缆 |
Also Published As
Publication number | Publication date |
---|---|
US6043434A (en) | 2000-03-28 |
EP0871182B1 (fr) | 2001-10-04 |
DK0871182T3 (da) | 2002-01-21 |
DE69801857T2 (de) | 2002-05-02 |
DE69801857D1 (de) | 2001-11-08 |
FR2762133B1 (fr) | 1999-06-11 |
FR2762133A1 (fr) | 1998-10-16 |
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