CN2922074Y - Horizontal paired cable with new shielding structure for super seven class data communication - Google Patents
Horizontal paired cable with new shielding structure for super seven class data communication Download PDFInfo
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- CN2922074Y CN2922074Y CN 200620043466 CN200620043466U CN2922074Y CN 2922074 Y CN2922074 Y CN 2922074Y CN 200620043466 CN200620043466 CN 200620043466 CN 200620043466 U CN200620043466 U CN 200620043466U CN 2922074 Y CN2922074 Y CN 2922074Y
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Abstract
The utility model discloses a horizontal paired cable with new shielding structure for super seven class data communication comprising a twisted-pair, an inner protective cover and an outer protective cover. The utility model is characterized in that the cable further comprises a first shielding layer wrapping the peripheries of every twisted-pairs and a second shielding layer wrapping the exteriors of all the twisted-pairs, wherein, the first shielding layer is of at least two layers. As each pair of lines adopt a unique structure of double layer aluminum foil shielding and double layer outer protective cover, the utility model effectively enhances resistance to intragroup crosstalk and solves intergroup crosstalk problem in high-frequency transmission between adjacent symmetrical cables for 10G Ethernet data communication, thus the utility model is a new product with high performance-price ratio.
Description
Technical field
The utility model relates to a kind of cable, relates in particular to the horizontal paired cable of super seven kinds of data communication that Ethernet is used.
Background technology
The high speed development of information technology needs speed faster.The network that capacity is very big carries, and the transmission rate that the existing six type unshielded data communication that is widely used in wiring market can't have been satisfied every pair of line on four pairs of cables with horizontal paired cable all reaches the 100m Distance Transmission of 2.5Gb/s, and bandwidth also has only 250MHz; Use the bandwidth minimum requirements of 10G technology to be 500MHz, and under such high frequency, noise jamming problem during wiring between the line group is difficult to solve by the simple numerical signal processing technology, in order to realize the transmission of this 10G (or above network) in copper cable twisted pair wire system, the seven class cables that surpass that produced this brand-new complete shield type solve AXT and guarantee performance under the high frequency.The cable of common non-shielding construction is because the restriction of this body structure causes cable antijamming capability to external world not good, and is especially outstanding during high frequency.
Summary of the invention
At the problems referred to above, the utility model proposes a kind of horizontal paired cable of super seven kinds of data communication of novel shielding construction, the shielding construction and the double-deck outer jacket structure of double-layer aluminum-foil have been adopted, improved greatly line between string around performance, further isolated external disturbance, guarantee the accuracy of data, improve network quality.
In order to realize the foregoing invention purpose, the technical solution of the utility model is, a kind of horizontal paired cable of super seven kinds of data communication of novel shielding construction, comprise twisted-pair feeder and inside and outside sheath, it is characterized in that, described cable further comprises: first screen is coated on the periphery of described each twisted pair wire; The secondary shielding layer is coated on all twisted pair wire outsides; Wherein, described first screen is at least two-layer.
Reasonable is that described first screen is an aluminium foil layer.
Reasonable is that described cable further comprises: described secondary shielding layer is a wire sheathing.
Reasonable is that described cable further comprises: a holding wire is arranged between the described inside and outside sheath.
Reasonable is that described device further comprises: a ground wire is arranged on described secondary shielding layer place.
The utility model has adopted the structure of every pair of line double-layer aluminum-foil shielding, the shielding construction of this double-layer aluminum-foil, its shield effectiveness absorption loss that skin effect causes in metal, also introduced the different metal interface, thereby reflection loss is strengthened, its structure is the shielding attenuation that has effectively increased every pair of wire rod, improved greatly line between string around performance, increased the ability of opposing outside noise simultaneously.Therefore the wire rod that uses this shielding construction to make, line to the international standard of crosstalking than IEC61156-5 improved more than the 10dB.Double-layer aluminum-foil shielding construction of the present utility model, being equivalent to every pair of wire rod all has two-layer shielding construction, and wire rod to add man-hour also easy especially.This shielding construction has guaranteed the accurate of transfer of data, fast with the more effective isolation of the electromagnetic interference in the external world.Bandwidth more can reach 1200MHz, easily deals with the requirement of future network; In addition, the utility model adds holding wire, and following network is at a high speed, accurately, also is intelligentized simultaneously.A whole network needs an intellectualized management.Webmaster could easily trace into the use of all terminals in the net: from simple access be disconnected to complicated file and write data access! Holding wire plays such effect exactly.Cooperate special binding terminal and advanced terminal control software, can extremely make things convenient for and realize above-mentioned intelligentized function efficiently.Guarantee the real-time monitoring and the safety of network.Owing to use special joint, can realize plug and play simultaneously! The 3rd, adopted double-deck oversheath.Further isolated external disturbance, the accuracy of assurance data is improved network quality; Its four, holding wire is placed between the two-layer sheath, can reduce the interference between it and the four pairs of twisted-pair feeders, further strengthened the transmittability and the monitoring capacity of network, guaranteed the symmetry of four pairs of horizontal twisted pair wires simultaneously.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Fig. 1 is a cross-sectional view of the present utility model.
Embodiment
See also accompanying drawing 1, shown in cable of the present utility model be the horizontal paired cable of complete shadow data communication, comprise four pairs of twisted-pair feeders 1～4 that structure is identical, with twisted pair wire 1 wherein is example, twisted pair wire 1 comprises two heart yearns that are the twisting shape, wherein each root heart yearn comprises conductor 111 and 121 respectively, and the insulating barrier 112,122 that coats it respectively, and four pairs of twisted pair wires 1～4 all adopt 20～60% back twist technology, peripheral independent one first screen 101 that coats of every twisted pair wire, this screen adopts the double-layer aluminum-foil structure, and the gross thickness of this aluminium foil is 0.095mm; In addition, in the outside of four pairs of twisted pair wires 1～4, also having coated a thickness is the secondary shielding layer 6 of 0.025mm, and this secondary shielding layer 6 adopts aluminium foil or braided metal screen to form, and this secondary shielding layer 6 can be directly as ground wire.Perhaps, a ground wire 5 is set in the middle of secondary shielding layer 6.
Skin at secondary shielding layer 6 is coated with inner sheath 7 and oversheath 8 successively.
In addition, also be provided with a holding wire 9 between inside and outside sheath 7,8, the adding of this holding wire 9 can realize the monitoring fully of network.
The conductor the 111, the 121st of heart yearn in the twisted pair wire is that the stranded hypoxemia copper conductor of 0.48mm is made by the nominal equivalent diameter; The insulating barrier 112,122 of heart yearn is made by polyethylene foamed (FOAM PE) material, and the thickness of insulating barrier 112,122 is 0.27 ± 0.02mm.Inner sheath 7 of the present utility model is made by polyvinyl chloride (PVC) material, and the thickness of this sheath 7 is 0.40 ± 0.15mm, and external diameter is 6.20 ± 0.2mm;
High-speed data communication of the present utility model has 5 important unit for electrical property parameters with horizontal paired cable: cross-talk etc. between cross-talk, group in the impedance, decay, return loss, group has taken into full account five equilibrium when design.
Impedance is a parameter the most basic in the electric property, it is by conductor lines footpath, two conductor centre-to-centre spacing, these three the parameter decisions of insulative dielectric constant, not matching of any impedance all can cause the error of final acknowledge(ment) signal, when design, taken into full account the influence of these three factors, the conductor lines footpath is big, low cut can be got well, but cost raises, and finish line footpath is bigger than normal; The conductor lines little decay meeting in footpath is influenced.Considering when producing the different and tension force of pitch, inconsistent can to produce each line different and influence impedance to two conductor centre-to-centre spacing, go out different insulated wire footpaths according to different multiple twin pitch design, the right resistance value of every line is controlled at about 100 ± 150hm after guaranteeing finished product, and being higher than 500MHz is about 100 ± 250hm.
Decay is divided into conductor decay and diectric attenuation two parts, and the conductor decay is relevant with resistance, so we adopt oxygen-free copper or hypoxemia copper product, makes resistance reach minimum; Insulating material is selected polyethylene foamed (FOAM PE) material for use, is the smaller material of dielectric constant and dielectric loss angle, can reduce decay and improve transmission rate.
Return loss is subjected to the influence of input impedance, because and load impedance do not match or make in the inhomogeneous point in cycle, and the reflection that produces signal, input impedance is fluctuateed up and down at characteristic impedance value, the energy of reflection aggravates along with the increase of frequency, even can produce the sudden change significantly of return loss.Adopted the pre-back twist technology of pair twist in the design, eliminated the influence of periodic inconsistent generation, improved the stability of input impedance, thereby optimized return loss input impedance.
The design of cross-talk is fully different with horizontal paired cable with original six class data communication in the group, the frequency of 250MHz is supported in original six class data communication only with the pitch design of horizontal paired cable, and existing 10G wire rod requires to possess crosstalking above 500MHz, so redesigned pitch and added every pair the double-deck aluminum foil shielded of independence, thereby satisfied the requirement of crosstalking in the group, real system can satisfy the qualified index of crosstalking of 1200MHz.
One of performance that high-speed data communication paired cable of the present utility model is superior is embodied on the anti-external world crosstalks.The double-layer aluminum-foil shielding that our company adopts adds the structure of double-deck oversheath, technology is simple, but the index of crosstalking can improved on the basis of international standard more than the 10dB, and crosstalk between solution group ideally, be a getting twice the result with half the effort, super seven kinds of data communication value-for-money is with horizontal paired cable new product.
The utility model is broken through on structure, improved the structure of twisted-pair feeder on horizontal paired cable basis at traditional high-speed data communication, added every pair of double-layer aluminum-foil shielding, suppressed effectively line between and the crosstalking of adjacent lines group during wiring, can easily realize 10G (or more than) Ethernet, and can make transmission range reach the 100m that requires in the structured wiring.Both satisfied the requirement of IEC 61156-5 electric property, also satisfied the desired fire protecting performance in American insurance merchant laboratory (UL), have easy to use, the advantage of being convenient to lay.
More than all embodiment only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.
Claims (5)
1, a kind of horizontal paired cable of super seven kinds of data communication of novel shielding construction comprises twisted-pair feeder and inside and outside sheath, it is characterized in that described cable further comprises:
First screen is coated on the periphery of described each twisted pair wire;
The secondary shielding layer is coated on all twisted pair wire outsides;
Wherein, described first screen is at least two-layer.
2, the horizontal paired cable of super seven kinds of data communication of novel shielding construction according to claim 1 is characterized in that,
Described first screen is an aluminium foil layer.
3, the horizontal paired cable of super seven kinds of data communication of novel shielding construction according to claim 1 is characterized in that described cable further comprises:
Described secondary shielding layer is a wire sheathing.
4, according to the horizontal paired cable of super seven kinds of data communication of claim 2 or 3 described novel shielding constructions, it is characterized in that described cable further comprises:
One holding wire is arranged between the described inside and outside sheath.
5, the horizontal paired cable of super seven kinds of data communication of novel shielding construction according to claim 4 is characterized in that described device further comprises:
One ground wire is arranged on described secondary shielding layer place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043466 CN2922074Y (en) | 2006-06-30 | 2006-06-30 | Horizontal paired cable with new shielding structure for super seven class data communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043466 CN2922074Y (en) | 2006-06-30 | 2006-06-30 | Horizontal paired cable with new shielding structure for super seven class data communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2922074Y true CN2922074Y (en) | 2007-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620043466 Expired - Lifetime CN2922074Y (en) | 2006-06-30 | 2006-06-30 | Horizontal paired cable with new shielding structure for super seven class data communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2922074Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074305A (en) * | 2011-01-07 | 2011-05-25 | 宁波能士通信设备有限公司 | Hybrid optical fiber cable |
| CN104977977A (en) * | 2014-04-02 | 2015-10-14 | 联发科技股份有限公司 | Clock tree circuit and memory controller |
| CN106920593A (en) * | 2015-12-24 | 2017-07-04 | 安徽九华金润铜业有限公司 | A kind of screening wire |
-
2006
- 2006-06-30 CN CN 200620043466 patent/CN2922074Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074305A (en) * | 2011-01-07 | 2011-05-25 | 宁波能士通信设备有限公司 | Hybrid optical fiber cable |
| CN104977977A (en) * | 2014-04-02 | 2015-10-14 | 联发科技股份有限公司 | Clock tree circuit and memory controller |
| CN106920593A (en) * | 2015-12-24 | 2017-07-04 | 安徽九华金润铜业有限公司 | A kind of screening wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070711 |
|
| EXPY | Termination of patent right or utility model |