CN104240838A - Shielding eight-type symmetric data cable for Ethernet - Google Patents
Shielding eight-type symmetric data cable for Ethernet Download PDFInfo
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- CN104240838A CN104240838A CN201410485205.3A CN201410485205A CN104240838A CN 104240838 A CN104240838 A CN 104240838A CN 201410485205 A CN201410485205 A CN 201410485205A CN 104240838 A CN104240838 A CN 104240838A
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- ethernet
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Abstract
The invention provides a shielding eight-type symmetric data cable for the Ethernet. The cable comprises a sheath internally provided with a metal shielding layer, a ground wire and two T-shaped filling strips. A cable core is arranged in the metal shielding layer. The cable core comprises a plurality of sets of twisted cables. Each set of twisted cable comprises a plurality of core wires. The ground wire makes contact with the inner surface of the metal shielding layer. The heads of the two T-shaped filling strips are oppositely placed, a metal shielding foil strip is arranged between the two heads of the T-shaped filling strips, and the two ends of the metal shielding foil strip make contact with the metal shielding layer and the ground wire to form two cavities insulated from each other. Wire pairs in the cavities are shielded, the electromagnetic interface between the wire pairs is effectively eliminated, and the transmission distance can reach 30 meters required by structural wiring.
Description
Technical field
The present invention relates to eight type shieldings (F/UTP), particularly relate to the shadow data communication symmetrical cable of 40G Ethernet.
Background technology
The high speed development of information technology, particularly cloud computing data need speed faster, and the network that capacity is larger carries, and are existingly widely used in surpassing seven class cables and cannot having met on four pairs of cables and transmit the 30m Distance Transmission of rate to 40Gb/s of wiring market.Along with network rate improves day by day, mean the raising of operating frequency, more easily produce electromagnetic radiation and capacitive coupling.Simultaneously, new electromagnetic interference source can be constantly had to produce in surrounding environment, the radiation of the higher generation of network operating frequencies is also more serious, and the equilibrium response of UTP non-masked data cable has been not enough to offset the electromagnetic radiation of express network itself and the electromagnetic interference in the external world, adopt shield technology then can effectively prevent outside electromagnetic interference from entering cable inside, stop cable internal signal to external radiation simultaneously.
Prior art adopts cross packing usually, cable core is divided into four marker spaces by cross packing, one group of twisted pair wire is placed in each marker space, but adopt the shielded type cable of this structure at high frequencies, return loss, characteristic impedance and the equal existing defects of crosstalk attenuation performance, particularly effectively eliminating the electromagnetic interference between line pair, making to be formed in cavity in this problem of shielding and being also short of to some extent.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of Ethernet shielding eight class symmetrical data cable, can make to be in line in cavity to shielding, effectively eliminates the electromagnetic interference between line pair.
For achieving the above object and other relevant objects, the invention provides a kind of Ethernet shielding eight class symmetrical data cable, comprise sheath, metal screen layer is provided with in described sheath, cable core is provided with in described metal screen layer, described cable core comprises: some groups of twisted pair wires, often organizes twisted pair wire and comprises several heart yearn; Ground wire, described ground wire contacts with described metal screen layer inner surface; Packing, described packing is two T-shaped shapes, and two T-shaped head ends are staggered relatively, are provided with metallic shield chaff between two T-shaped head ends, the both ends of described metallic shield chaff and described metal screen layer and ground contact, form the cavity that 2 holes shield mutually.
Preferably, described twisted pair wire is 4 right, and twisted pair wire is separated into four marker spaces by the packing of two T-shaped shapes, arranges one group of twisted pair wire in each marker space.
Preferably, often organize the heart yearn that twisted pair wire comprises 2 stranded settings, every root heart yearn comprises conductor, insulating barrier, and described insulating barrier is coated on outside described conductor.
Preferably, described metallic shield layer thickness is 0.02 ~ 1mm, and width is 5 ~ 30mm.
Preferably, described insulating barrier adopts the material of low-k, low dielectric loss, is made up of high-density polyethylene material, physical blowing polythene material.
Preferably, described packing is or/and metal screen layer is the flexible material of low-k, low dielectric loss.
Preferably, described sheath is made up of polyvinylchoride material, fluoropolymer or low smoke and zero halogen material.
Preferably, the conductor of described heart yearn is made up with annealing is stranded through wire drawing of hypoxemia copper or oxygenless copper material, and conductor specification is the solid of 20 ~ 30AWG or stranded conductor.
Preferably, two heart yearns of described twisted pair wire are stranded shape, and often organize the back twist technology that twisted pair wire all adopts 20 ~ 60%.
As mentioned above, Ethernet shielding eight class symmetrical data cable of the present invention has following beneficial effect: the present invention is broken through structure, traditional high-speed data communications cables basis improves traditional shielding layout format, effectively can improve the transmission performance at 2000MHZ, 40G Ethernet can be configured on shielding twisted pair wire, and transmission range can be made to reach the 30m required in structured wiring, is a Eco-power data cable.Packing is double T font, and both ends and described metal screen layer and the ground contact of the metallic shield chaff in the middle of double T word packing, form the cavity that 2 holes shield mutually, makes to be in line in cavity to shielding, the electromagnetic interference effectively between elimination line pair.Conductor all adopts hypoxemia soft copper, can improve the softness of wire rod.Ethernet shielding eight class symmetrical data cable of the present invention both met American Communications TIA PN-568-C.2-1 Draft 0.9 draft mechanical performance and the requirement of electric property, also meet the fire protecting performance required by Underwriters Laboratories (UL), have easy to use, be convenient to the advantage of laying.
Accompanying drawing explanation
Fig. 1 is a kind of Ethernet shielding eight class symmetrical data cable cross sectional representation.
Element numbers explanation
1-sheath, 2-metal screen layer, 3-cable core, 4-ground wire, 5-metallic shield chaff, 31-packing, 32-twisted pair wire, 321-conductor, 322-insulating barrier.
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
Refer to Fig. 1.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, Ethernet shielding eight class symmetrical data cable cross sectional representation, comprise sheath 1, be provided with metal screen layer 2 in sheath 1, metal screen layer 2 thickness is 0.02 ~ 1mm, and width is 5 ~ 30mm.Be provided with cable core 3 in metal screen layer 2, cable core 3 comprises: 4 groups of twisted pair wires 32 are separated into four marker spaces by the packing of 4 groups of twisted pair wires, 32, two T-shaped shapes, arrange one group of twisted pair wire 32 in each marker space; Often organize the heart yearn that twisted pair wire comprises 2 stranded settings, every root heart yearn comprises conductor 321, insulating barrier 322, and insulating barrier 322 is coated on outside conductor 321.In metal screen layer 2, nestle up a ground wire 4, ground wire 4 contacts with metal screen layer 2 inner surface; Packing 31 is two T-shaped shapes, and two T-shaped head ends are staggered relatively, and be provided with metallic shield chaff 5 between two T-shaped head ends, the both ends of metallic shield chaff 5 contact with metal screen layer 2, ground wire 4, the cavity making cable core 3 form 2 holes mutually to shield.
Two heart yearns of twisted pair wire 32 are stranded shape, and often organize the back twist technology that twisted pair wire 32 all adopts 20 ~ 60%.
The material that packing 31 adopts is polyethylene (PE), low smoke and zero halogen (LSZH) material or polytetrafluoroethylene (FEP), and packing 31 and metal screen layer 2 are the flexible material of low-k, low dielectric loss, described in.
Sheath 1 is made up of polyvinylchoride material, fluoropolymer or low smoke and zero halogen material.Can ensure that sheath 1 still keeps excellent physical characteristic under severe external environment and wire laying mode in violation of rules and regulations.The thickness of sheath 1 and external diameter can be made adjustment according to wiring instructions for use.
The conductor 321 of heart yearn is made up with annealing is stranded through wire drawing of hypoxemia copper or oxygenless copper material, conductor 321 specification is the solid of 20 ~ 30AWG or stranded conductor, the insulating barrier 322 of heart yearn adopts the material of low-k, low dielectric loss, is made up of high-density polyethylene material, physical blowing polythene material.
Ethernet shielding eight class symmetrical data cable of the present invention has cross-talk between 5 important unit for electrical property parameters: Zu Kang ﹑ Shuai Jian ﹑ return losses, the interior cross-talk of group, group, has taken into full account the equilibrium of five when designing.
Impedance is parameter the most basic in electric property, and it is determined by conductor wire diameter, two conductor centre-to-centre spacing, these three parameters of insulative dielectric constant, any impedance do not mate the error that all can cause final acknowledge(ment) signal.We have taken into full account the impact of these three factors when designing, conductor wire diameter is large, and low cut can be got well, but cost raises, and final wire diameter is bigger than normal; The little decay of conductor wire diameter can be influenced.When considering production, inconsistent to produce each line different and affect impedance on two conductor centre-to-centre spacing for the different and tension force of pitch, go out different insulation wire diameters according to different multiple twin pitch design, the resistance value that after ensureing finished product, every line is right controls at about 100 ± 15 Ohm.
Decay is divided into conductor to decay and diectric attenuation two parts.Conductor decay is relevant with resistance, so we adopt oxygen-free copper or hypoxemia copper product, makes resistance reach minimum; Insulating material selects high density polyethylene (HDPE) (HDPE) or physical blowing (FOAM PE) material, is all the smaller material of dielectric constant and dielectric loss angle.
Return loss is by the impact of input impedance, due to not the mating or the uneven point in cycle in making of load impedance, and produce the reflection of signal, input impedance is fluctuated up and down at characteristic impedance value, the energy of reflection aggravates along with the increase of frequency, even can produce the significantly sudden change of return loss.Have employed the pre-back twist technology of pair twist in design, eliminate periodically inconsistent the impact produced input impedance, improve the stability of input impedance, thus optimize return loss.
In group, the design of cross-talk is based upon in the pitch of original six class lines, the pitch design of original six class lines supports the frequency of 250MHz only, and existing 40G wire rod requires the crosstalk that possesses more than 2000MHz, therefore suitably reduce pair twist pitch during design, the metal screen layer conductive layer of metal layer cross packing and external sheath is contained by uniqueness, tinned copper wire is that ground wire effectively contacts, form the cavity that 4 holes shield mutually, make to be in line in cavity to can individual screen, effectively eliminate the electromagnetic interference between line pair.In group, cross-talk has used the statistical method of Six Sigma experimental design to have selected best pitch, thus meets the requirement of crosstalk in group, and real system can meet the qualified crosstalk index of 2000MHz.
One of performance that Ethernet shielding eight class symmetrical data cable of the present invention is superior, is embodied in anti-extraneous crosstalk.Packing is double T font, the double T word of packing and intermetallic metal screen end and described metal screen layer and ground contact, form the cavity that 2 holes shield mutually, make to be in line in cavity to can individual screen, electromagnetic interference between effective elimination line pair, crosstalk between solution group effectively, particularly with frequency increase group between the more and more less feature of crosstalk.Effectively can improve the transmission performance at 2000MHZ, and handling ease, save material, be aly to get twice the result with half the effort, Eco-power new product.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. an Ethernet shielding eight class symmetrical data cable, comprise sheath, be provided with metal screen layer in described sheath, be provided with cable core in described metal screen layer, described cable core comprises: some groups of twisted pair wires, often organizes twisted pair wire and comprises several heart yearn; Ground wire, described ground wire contacts with described metal screen layer inner surface; Packing, described packing is two T-shaped shapes, and two T-shaped head ends are staggered relatively, are provided with metallic shield chaff between two T-shaped head ends, the both ends of described metallic shield chaff and described metal screen layer and ground contact, form the cavity that 2 holes shield mutually.
2. Ethernet shielding eight class symmetrical data cable according to claim 1, is characterized in that: described twisted pair wire is 4 right, and twisted pair wire is separated into four marker spaces by the packing of two T-shaped shapes, arranges one group of twisted pair wire in each marker space.
3. Ethernet shielding eight class symmetrical data cable according to claim 1, is characterized in that: often organize the heart yearn that twisted pair wire comprises 2 stranded settings, every root heart yearn comprises conductor, insulating barrier, and described insulating barrier is coated on outside described conductor.
4. Ethernet shielding eight class symmetrical data cable according to claim 1 and 2, it is characterized in that: described metallic shield layer thickness is 0.02 ~ 1mm, width is 5 ~ 30mm.
5. Ethernet shielding eight class symmetrical data cable according to claim 1, is characterized in that: described insulating barrier adopts the material of low-k, low dielectric loss, is made up of high-density polyethylene material, physical blowing polythene material.
6. Ethernet shielding eight class symmetrical data cable according to claim 1, is characterized in that: described packing is or/and metal screen layer is the flexible material of low-k, low dielectric loss.
7. the shielding eight class symmetrical data cable of the Ethernet according to claim 1 or 2 or 3, is characterized in that: described sheath is made up of polyvinylchoride material, fluoropolymer or low smoke and zero halogen material.
8. Ethernet shielding eight class symmetrical data cable according to claim 1, is characterized in that: the conductor of described heart yearn is made up with annealing is stranded through wire drawing of hypoxemia copper or oxygenless copper material, and conductor specification is the solid of 20 ~ 30AWG or stranded conductor.
9. Ethernet shielding eight class symmetrical data cable according to claim 6, is characterized in that: two heart yearns of described twisted pair wire are stranded shape, and often organizes the back twist technology that twisted pair wire all adopts 20 ~ 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410485205.3A CN104240838A (en) | 2014-09-22 | 2014-09-22 | Shielding eight-type symmetric data cable for Ethernet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410485205.3A CN104240838A (en) | 2014-09-22 | 2014-09-22 | Shielding eight-type symmetric data cable for Ethernet |
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| CN104240838A true CN104240838A (en) | 2014-12-24 |
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| CN201410485205.3A Pending CN104240838A (en) | 2014-09-22 | 2014-09-22 | Shielding eight-type symmetric data cable for Ethernet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702331A (en) * | 2016-04-22 | 2016-06-22 | 昆山安胜达微波科技有限公司 | Fluoroplastic insulated cable |
| CN106251958A (en) * | 2016-07-25 | 2016-12-21 | 苏州东威连接器电子有限公司 | A kind of high stable flexible flat |
| CN106448820A (en) * | 2015-08-10 | 2017-02-22 | 纬创资通股份有限公司 | Cable wire |
| CN107230532A (en) * | 2016-03-25 | 2017-10-03 | 华迅工业(苏州)有限公司 | A kind of Ethernet CAT8 F/UTP symmetrical data cables |
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| US20050029006A1 (en) * | 2001-10-25 | 2005-02-10 | Sumitomo Electric Industries Ltd. | Signal transmission cable terminal device and data transmission method using signal transmission cable |
| CN201749728U (en) * | 2009-11-26 | 2011-02-16 | 领迅电线工业(上海)有限公司 | UTP data cable of semi-shielded 10G Ethernet |
| CN102436873A (en) * | 2011-12-27 | 2012-05-02 | 江苏亨通线缆科技有限公司 | Shield 8-class digital cable provided with skeleton structure |
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2014
- 2014-09-22 CN CN201410485205.3A patent/CN104240838A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050029006A1 (en) * | 2001-10-25 | 2005-02-10 | Sumitomo Electric Industries Ltd. | Signal transmission cable terminal device and data transmission method using signal transmission cable |
| CN201749728U (en) * | 2009-11-26 | 2011-02-16 | 领迅电线工业(上海)有限公司 | UTP data cable of semi-shielded 10G Ethernet |
| CN102436873A (en) * | 2011-12-27 | 2012-05-02 | 江苏亨通线缆科技有限公司 | Shield 8-class digital cable provided with skeleton structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448820A (en) * | 2015-08-10 | 2017-02-22 | 纬创资通股份有限公司 | Cable wire |
| US9786414B2 (en) | 2015-08-10 | 2017-10-10 | Wistron Corporation | Cable |
| TWI612536B (en) * | 2015-08-10 | 2018-01-21 | 緯創資通股份有限公司 | Cable |
| CN106448820B (en) * | 2015-08-10 | 2018-06-01 | 纬创资通股份有限公司 | Cable wire |
| CN107230532A (en) * | 2016-03-25 | 2017-10-03 | 华迅工业(苏州)有限公司 | A kind of Ethernet CAT8 F/UTP symmetrical data cables |
| CN105702331A (en) * | 2016-04-22 | 2016-06-22 | 昆山安胜达微波科技有限公司 | Fluoroplastic insulated cable |
| CN106251958A (en) * | 2016-07-25 | 2016-12-21 | 苏州东威连接器电子有限公司 | A kind of high stable flexible flat |
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Application publication date: 20141224 |