CN202178108U

CN202178108U - Shielded and unshielded symmetrical data cable for Ethernet

Info

Publication number: CN202178108U
Application number: CN2011202652336U
Authority: CN
Inventors: 刘雅梁; 杨吉; 陈志坚
Original assignee: Fast Industry (suzhou) Co Ltd Of China
Current assignee: Fast Industry (suzhou) Co Ltd Of China
Priority date: 2011-07-26
Filing date: 2011-07-26
Publication date: 2012-03-28
Anticipated expiration: 2021-07-26

Abstract

The utility model discloses a shielded and unshielded symmetrical data cable for Ethernet. The shielded and unshielded symmetrical data cable comprisesa cable inner core as well as an inner sheath and an outer sheath of the cable inner core, wherein the cable inner core further comprises four twisted pairs and a fillingstrip; each twisted pair comprises two twisted core wires; each core wire consists of a conductor and an insulating layer coating outside the conductor; the fillingstrip comprises a firstseparated area, a second separated areaand a third separated area which are independent; the first twisted pairand the second twisted pair are arranged at the first separated area; and the third twisted pairand the fourth twisted pair are arranged at the second separated areaand the third separated area. By means of the shielded and unshielded symmetrical data cable, the crosstalk of adjacent wire groups during wiring is effectively restrained.

Description

Ethernet is with shielding and non-shielding symmetric data cable

Technical field

The utility model relates to six type shieldings and unshielded cable, relates in particular to shielding that the 10G Ethernet the uses symmetrical cable of communicating by letter with non-shadow data.

Background technology

The high speed development of information technology needs speed faster. and the network that capacity is bigger carries; And the transmission rate that the existing Class 6 cable that is widely used in wiring market can't satisfy every pair of line on four pairs of cables 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 through the simple numerical signal processing technology, so need the Class 6 cable of a kind of enhancement mode of design to solve the performance under AXT and the assurance high frequency.

Summary of the invention

To the problems referred to above; The utility model is broken through on structure; On traditional high-speed data communications cables basis, improved the structure that traditional cross is filled; The crosstalking of adjacent lines group when having suppressed wiring effectively, can non-shielding multiple twin on configuration 10G Ethernet, and can make the transmission range reach the 100m that requires in the structured wiring.

In order to realize the foregoing invention purpose; The utility model discloses a kind of Ethernet with shielding and non-shielding symmetric data cable; Comprise cable inner core and the outside inside and outside quilt that coats successively thereof, it is characterized in that said cable inner core further comprises: four groups of twisted pair wires; Every group of twisted pair wire comprises two stranded heart yearns, and every heart yearn is made up of conductor and the outside insulating barrier that coats; Packing comprises independently first, second and the 3rd marker space; Wherein, said first and second group twisted pair wire is arranged on first marker space, and said the 3rd, the 4th group of twisted pair wire is arranged on second, third marker space.

Reasonablely be, said packing is the mountain font, and dual-side to extend below, first marker space forms to extending below to enclose by the dual-side of this mountain font packing, second, third marker space is enclosed respectively by mountain font three sides and forms.

Reasonablely be, the side thickening of said packing, the twisted pair wire of relatively large pitch is near said thicker side.

Reasonable is that the side that said packing is thicker adopts stepped.

Reasonablely be the cross section ovalize of said cable.

Reasonablely be; The conductor of said heart yearn by hypoxemia copper or oxygenless copper material through wire drawing and stranded the processing of annealing; The conductor specification is the solid or stranded conductor of 20～28AWG; Said insulating barrier adopts the material of low-k, low dielectric loss, is processed by high-density polyethylene (HDPE) material, physical blowing polyethylene (FOAM PE); Said packing is low dielectric material.

Reasonable is that two heart yearns of said twisted pair wire are the twisting shape, and four groups of twisted pair wires all adopt 20～60% back twist technology.

More easy mounting and cost are lower than shielding twisted pair wire and optical cable wiring system for the utility model of said structure, are a Eco-power cables.Both satisfy the requirement of mechanical performance and the electric property of EIA/telecommunications industry association EIA/TIA-568B.C.2, also satisfied the desired fire protecting performance in American insurance merchant laboratory (UL), had advantage easy to use, that be convenient to lay.

Description of drawings

Below, with reference to accompanying drawing, for those skilled in the art that, from the detailed description to the utility model, above-mentioned and other purposes of the utility model, feature and advantage will be obvious.

Fig. 1 (1)～Fig. 1 (4) be the utility model cable 4 packing embodiment analyse and observe schematic cross-section;

Fig. 2 is that the construction of cable that contains packing among Fig. 1 (2) is analysed and observe schematic cross-section.

Embodiment

See also Fig. 1 (1)～Fig. 1 (4) provided the utility model cable 4 packing embodiment analyse and observe schematic cross-section; Packing 10 wherein all is the mountain font, and dual-side 101,102 is to extending below.Wherein, a side 102 of the packing 10 shown in Fig. 1 (1) is obviously thickeied, and the twisted pair wire of relatively large pitch can be designed near the thicker side 102 of packing, has effectively increased the distance of twisted pair wire between group, has reduced the cross-talk between group; Among 3 embodiment shown in Fig. 1 (2)～figure (4) (being example only) to scheme (2); Equally also be that packing 10 1 sides 102 are obviously thickeied; And the webbing 102 of packing all adopted steppedly, guaranteed that not only the coverage between group strengthens, and guaranteed cross-talk between group; Also reduce simultaneously the length at diagonal angle, effectively reduced the mean outside diameter of cable.

Shown in Figure 2 is that the construction of cable that contains packing among Fig. 1 (2) is analysed and observe schematic cross-section.Cable inner core 20 comprises the packing 10 of some groups of twisted pair wires (being illustrated as 4 groups of twisted pair wires 211～214) and definite shape, and every heart yearn 20 is made up of conductor 201 and the outside insulating barrier 202 that coats, and heart yearn 20 is formed one group of twisted pair wire in twos.In these inner core 20 outsides coat successively by 221 and outside by 222.

The special-shaped packing 10 of said structure, crosstalking between the adjacent lines group when cable pencil is tied up in the time of can effectively suppressing to connect up.

Aspect the material selection, the conductor of the utility model all adopts the hypoxemia soft copper, has improved the soft degree of wire rod.

Packing 10 is made by the low tangent consumable material of polyethylene (PE) or other low-k, and minimal thickness: the 0.3mm of width: 6.3mm ± 2mm height 5.3mm ± 2mm is the thickest: 1.7mm.

Above-mentioned 4 types filling can be used for shielding and non-shielding CAT6, CAT6A data communication symmetrical cable.

The high-speed data communication paired cable of the utility model has 5 important unit for electrical property parameters: cross-talk etc. between impedance, decay, return loss, cross-talk (in the group), group has taken into full account five equilibrium when design.

Impedance is a parameter the most basic in the electric property, and it is by conductor lines footpath, two conductor centre-to-centre spacing, these three parameter determining of insulative dielectric constant, and not matching of any impedance all can cause the error of final acknowledge(ment) signal.We the time have taken into full account the influence of these three factors in design, and the conductor lines footpath is big, and 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 ± 15Ohm behind the assurance finished product.

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 high density polyethylene (HDPE) (HDPE) or physical blowing polyethylene (FOAM PE) material for use, all is the smaller material of dielectric constant and dielectric loss angle.

Return loss receives the influence of input impedance; Since with 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, and the energy of reflection aggravates along with the increase of frequency, even can produce the sudden change significantly of return loss.Adopted the preparatory back twist technology of pair twist in the design, eliminated the influence of periodic inconsistent generation, improved the stability of input impedance, thereby optimize return loss input impedance.

The design of cross-talk is to be based upon on the pitch of original six types of lines in the group; The pitch design of original six types of lines is supported the frequency of 250MHz only, and existing 10G wire rod requires to possess above the crosstalking of 500MHz, so suitably reduced the pair twist pitch when designing; Different in nature packing with unique is separated; And used the statistical method of Six Sigma experimental design to select best pitch, thereby satisfied the requirement of crosstalking in the group, real system can satisfy the qualified index of crosstalking of 1000MHz.

One of performance that the high-speed data communication paired cable of the utility model is superior is embodied on the anti-external world crosstalks.When traditional six types of data communication paired cables of non-shielding design can't solve frequency and extends to high frequency; The interference of adjacent lines group same pitch line centering transmission signals; Adopt the method for more filling in the structure that changes skeletons such as cable cross filling into or the line group to solve this puzzlement so more in the world renowned company; The former has stronger convincingness in theory; Difficulty is bigger during actual production, and the latter has increased the control point because of having dosed too many filling when actual production, and performance also is difficult to guarantee stable.The structure of the filling of our company's this kind of employing excitability performance technologies type and the oversheath of on-circular cross-section; But crosstalk between solution group effectively; The more and more littler characteristics of particularly crosstalking between increase group with frequency. and handling ease; Saving material, is a getting twice the result with half the effort. Eco-power new product.

More than all embodiment only supply to explain the usefulness of the utility model; But not to the restriction of the utility model; The technical staff in relevant technologies field; Under the situation of spirit that does not break away from the utility model and scope, can also make various conversion or variation, so the category that all technical schemes that are equal to also should belong to the utility model should be limited each claim.

Claims

1. an Ethernet comprises cable inner core and the outside inside and outside quilt that coats successively thereof with shielding and non-shielding symmetric data cable, it is characterized in that said cable inner core further comprises:

Four groups of twisted pair wires, every group of twisted pair wire comprises two stranded heart yearns, every heart yearn is made up of conductor and the outside insulating barrier that coats;

Packing comprises independently first, second and the 3rd marker space;

Wherein, said first and second group twisted pair wire is arranged on first marker space, and said the 3rd, the 4th group of twisted pair wire is arranged on second, third marker space.

2. Ethernet according to claim 1 is used shielding and non-shielding symmetric data cable, it is characterized in that,

Said packing is the mountain font, and dual-side to extend below, first marker space forms to extending below to enclose by the dual-side of this mountain font packing, second, third marker space is enclosed respectively by mountain font three sides and forms.

3. Ethernet according to claim 2 is used shielding and non-shielding symmetric data cable, it is characterized in that,

The one side thickening of said packing, the twisted pair wire of relatively large pitch is near said thicker side.

4. Ethernet according to claim 3 is used shielding and non-shielding symmetric data cable, it is characterized in that,

The side that said packing is thicker adopts stepped.

5. use shielding and non-shielding symmetric data cable according to the Ethernet described in the claim 3, it is characterized in that the cross section ovalize of said cable.

6. use shielding and non-shielding symmetric data cable according to claim 2 or 3 or 4 or 5 described Ethernets, it is characterized in that,

The conductor of said heart yearn by hypoxemia copper or oxygenless copper material through wire drawing and stranded the processing of annealing; The conductor specification is the solid or stranded conductor of 20～28AWG; Said insulating barrier adopts the material of low-k, low dielectric loss, is processed by high-density polyethylene (HDPE) material, physical blowing polyethylene (FOAM PE); Said packing is low dielectric material.

7. use shielding and non-shielding symmetric data cable according to the Ethernet described in the claim 6, it is characterized in that,

Two heart yearns of said twisted pair wire are the twisting shape, and four groups of twisted pair wires all adopt 20～60% back twist technology.