CN102855974B - Transmission unit structure capable of reducing crosstalk signals - Google Patents
Transmission unit structure capable of reducing crosstalk signals Download PDFInfo
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- CN102855974B CN102855974B CN201110178652.0A CN201110178652A CN102855974B CN 102855974 B CN102855974 B CN 102855974B CN 201110178652 A CN201110178652 A CN 201110178652A CN 102855974 B CN102855974 B CN 102855974B
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Abstract
The invention discloses a transmission unit structure capable of reducing crosstalk signals. The transmission unit structure comprises a first lead group, wherein the first lead group includes at least one first lead and at least one second lead, the first and second leads respectively comprise a first coating layer and a second coating layer and are arranged correspondingly in the axial direction, and the dielectric coefficient of each first coating layer is higher than that of each second coating layer; by the first coating layers and the second coating layers, difference between high and low dielectric properties is generated between the leads, and thus, the Crosstalk phenomenon generated during high-speed signal transmission is reduced.
Description
Technical field
The present invention relates to a kind of transmission unit structure for reducing crosstalk signal, espespecially a kind of by being situated between with arranging different height
The clad of electric difference, makes the difference that height dielectric property is produced between the grade wire, to reduce high-speed signal transmission when institute
The transmission unit structure of the reduction crosstalk signal of the phenomenon of the crosstalk (Crosstalk) of generation.
Background technology
In recent years message more and more extensively, more and more improves with the application of video signal, and video and audio CD disc, digit number are more
Function laser disc, high-res digit number TV, audio-visual telephone and video conference etc., all intervene in our living environment
In, and under the leading of new science and technology trend, most of video-audio system is processed all by the way of total bit digitizing
The information of voice image, and the application with different field and demand, have different standard specification, standards worked out again and again,
Revision and renewal, also for offer higher quality, the video-audio effect of more high-quality, there is provided the transmission (news of digit number signal
It is number not compressed) must be more sophisticated, quick in speed；And in current digit number video signal interface standard specification, such as HDMI,
DVI and DisplayPort equal-specification interfaces, to transmit through the digit numberization by these interfaces, carry out strengthening electronic equipment
Shown picture quality, and this etc. interface can be electrically plugged in box, DVD player, PC, electricity on adapter, machine
It is high, high apart from remote, quality with transfer rate depending on equipment such as Game device, integrated amplifier and digit number sound equipments, and gradually receive
Like to masses, the quantity for using also increasingly increases, in the image quality of digit number high-speed transfer, can be provided with preferably
Video signal effect.
And the cable that DisplayPort, DVI and HDMI connector are used, it is mostly round or flat type cable arrangement,
And there is a plurality of plain conductor inside cable, and in the outside coated insulation layer of a plurality of plain conductor, to completely cut off metal signal
Be short-circuited line phenomenon between wire, separately can coat a metal in the outside of each signal pair and hide layer, to prevent between signal pair
Crosstalk phenomenon, though this metal hides the crosstalk phenomenon that layer can be reduced between signal line pair, overall cable arrangement can be caused to be hardened
Inconvenient user is used, and can also cause cable overall weight to become weight, in addition；When cable is assembled with bonder terminal
When, it is necessary to divest this metal and hide layer, waste material can be produced, also cannot arrange in pairs or groups penetrating type terminal, complete the automatization's group with cable
Dress.
The content of the invention
To solve the shortcoming of above-mentioned prior art, it is a primary object of the present invention to provide one kind can reduce high-speed signal biography
The transmission unit structure of caused crosstalk phenomenon (Crosstalk) when defeated.
In order to achieve the above object, the present invention is to provide a kind of transmission unit structure of reduction crosstalk signal, the reduction string
The transmission unit structure of signal is disturbed, is to include：One first wire group；
The first wire group has at least one first wire and at least one second wire, and first wire has one first
Clad, second wire has one second clad, and first and second wire system is axially opposing should arrange for this, first clad
Dielectric coefficient is higher than second clad.
Preferably in embodiment, with more one second wire group and a privates group, the second wire group has extremely
A few privates and an at least privates, the privates has aforementioned first clad, and the privates have aforementioned
Second clad, the privates group has at least one the 5th wire and at least one the 6th wire, and the 5th wire has aforementioned
First clad, the 6th wire has aforementioned second clad.
Preferably in embodiment, with more one second wire group and a privates group, the second wire group has extremely
A few privates and an at least privates, the privates has aforementioned first clad, and the privates group has extremely
Few one the 5th wire and at least one the 6th wire, the 5th wire has aforementioned first clad, and second clad is same
When coat first clad and second, four, six wire.
Preferably in embodiment, with more one second wire group and one first earth lead and one second earth lead and
One the 3rd earth lead, the second wire group has an at least privates and an at least privates, and the privates has
Aforementioned first clad, the privates have aforementioned second clad, and the first and second wire group is differential signal pair, should
First earth lead is provided at the first wire group side, and between the first and second wire group, this for second earth lead
Three earth leads are provided at the opposite side of the contrary first wire group of the second wire group, and one the 3rd clad is while before cladding
First and second clad is stated, and the first clad dielectric coefficient is higher than second clad.
Preferably in embodiment, with more one second wire group and a privates group, the second wire group has extremely
A few privates and an at least privates, third and fourth wire has aforementioned first clad, and the privates group has
At least one the 5th wire and at least one the 6th wire, the five, the six wires have aforementioned first clad, the second wire group
And the privates group is single-ended signal pair, aforementioned first clad is coated by aforementioned second clad, first bag
Coating dielectric coefficient is higher than second clad.
Preferably in embodiment, with more one second wire group and one first earth lead and one second earth lead and
One the 3rd earth lead, the first wire of the first wire group and second wire have one first clad, and this second is led
Line group has an at least privates and an at least privates, and the privates and the privates have aforementioned first cladding
Layer, the first and second wire group is differential signal pair, and first earth lead is provided at the first wire group side, and this second
Between the first and second wire group, the 3rd earth lead is provided at contrary this of the second wire group and first leads earth lead
The opposite side of line group, the first, second and third earth lead outside has aforementioned second clad, the dielectric system of first clad
Number is higher than second clad.
Preferably in embodiment, first and second wire is in horizontal alignment.
Preferably in embodiment, first and second wire is axially interlaced combination.
Preferably in embodiment, with more one the 3rd clad.
Preferably in embodiment, with more one the 4th clad, the 4th clad is aluminium foil, the 4th clad
Aforementioned first and second wire group is coated, and is coated on outside aforementioned first clad.
In order to achieve the above object, the present invention also provides a kind of transmission unit structure of reduction crosstalk signal, is to include：
One first wire group, with least one first wire and at least one second wire, first wire has one first
Clad, first and second wire is axially opposing should to arrange；
One second clad, is to coat aforementioned first clad and second wire.
It is of the invention main by the first clad and the characteristic with relative dielectric difference height of the second clad, when will tool
When the first clad for having higher dielectric coefficient is coated on the first wire outside, first wire is made to produce relative second wire tool
There is higher dielectric coefficient, i.e., when the first wire of the first higher clad of dielectric coefficient, its dielectric coefficient then can be relatively
Height, while because high-k material has the ability of larger electric field aggregation, easier storage electric field, you can reduce high-speed signal
The phenomenon of caused crosstalk (Crosstalk) during transmission.
Description of the drawings
Fig. 1 is the sectional view of the transmission unit structure first embodiment that the present invention reduces crosstalk signal；
Fig. 2 is the sectional view of the transmission unit structure second embodiment that the present invention reduces crosstalk signal；
Fig. 3 is the sectional view of the transmission unit structure 3rd embodiment that the present invention reduces crosstalk signal；
Fig. 4 is the sectional view of the transmission unit structure fourth embodiment that the present invention reduces crosstalk signal；
Fig. 5 is the sectional view of the embodiment of transmission unit structure the 5th that the present invention reduces crosstalk signal；
Fig. 6 is the sectional view of the transmission unit structure sixth embodiment that the present invention reduces crosstalk signal；
Fig. 7 is the sectional view of the embodiment of transmission unit structure the 7th that the present invention reduces crosstalk signal；
Fig. 8 is the sectional view of the embodiment of transmission unit structure the 8th that the present invention reduces crosstalk signal；
Fig. 9 is the sectional view of the embodiment of transmission unit structure the 9th that the present invention reduces crosstalk signal；
Figure 10 is the axonometric chart of the embodiment of transmission unit structure the tenth that the present invention reduces crosstalk signal；
Figure 11 is that the transmission unit structure of present invention reduction crosstalk signal is shown for aspect A electromagnetism mapping；
Figure 12 is that the transmission unit structure of present invention reduction crosstalk signal is shown for aspect B electromagnetism mapping；
Figure 13 is that the transmission unit structure of present invention reduction crosstalk signal is shown for aspect C electromagnetism mapping；
Figure 14 is that the transmission unit structure of present invention reduction crosstalk signal is shown for aspect D electromagnetism mapping.
Description of reference numerals：1- reduces the transmission unit structure of crosstalk signal；11- the first wire groups；The wires of 111- first；
The clads of 1111- first；The clads of 1113- the 3rd；The clads of 1114- the 4th；The wires of 112- second；The clads of 1121- second；
12- the second wire groups；121- privates；122- privates；13- privates groups；The wires of 131- the 5th；132- the 6th leads
Line；The earth leads of 14- first；The earth leads of 15- second；The earth leads of 16- the 3rd.
Specific embodiment
The present invention is to provide a kind of transmission unit structure of reduction crosstalk signal, it is illustrated that reduce crosstalk signal for the present invention
Transmission unit structure preferred embodiment.
Fig. 1 is referred to, is the sectional view of the transmission unit structure first embodiment that the present invention reduces crosstalk signal, as schemed institute
Show, the transmission unit structure 1 for reducing crosstalk signal, is to include：One first wire group 11；
The first wire group 11 has at least one first wire 111 and at least one second wire 112, first wire
111 have one first clad 1111, second wire 112 have one second clad 1121, first and second wire 111,
112 is axially in parallel corresponding setting side by side, and the dielectric coefficient of the first clad 1111 is higher than second clad 1121.
First wire 111 is a Communication signal wire；Second wire 112 can for a Communication signal wire or an earth lead its
In it is arbitrary.
Fig. 2 is referred to, is the sectional view of the transmission unit structure second embodiment that the present invention reduces crosstalk signal, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
The transmission unit structure 1 not existed together for the reduction crosstalk signal of first embodiment is with more one second wire group 12 and one the
Three wires group 13, the second wire group 12 has an at least privates 121 and an at least privates 122, the privates
121 have aforementioned first clad 1111, and the privates 122 have aforementioned second clad 1121, the privates group 13
With at least one the 5th wire 131 and at least one the 6th wire 132, the 5th wire 131 has aforementioned first clad 1111,
6th wire 132 has aforementioned second clad 1121, and the first, second and third wire group 11,12,13 also can be differential news
It is number right.
The present embodiment is to utilize have between the first clad 1111 and the second clad 1121 height dielectric difference, high dielectric
Material electric field, electric field aggregation is reduced between signal pair using dielectric materials, reduces the interference of cross-talk noise between signal pair.
Fig. 3 is referred to, is the sectional view of the transmission unit structure 3rd embodiment that the present invention reduces crosstalk signal, as schemed institute
Show, the present embodiment is that part-structure here identical with aforementioned first embodiment will not be described in great detail, but the present embodiment and aforementioned
Not existing together for one embodiment is, the transmission unit structure 1 for reducing crosstalk signal with more one second wire group 12 and one the
Three wires group 13, the second wire group 12 has an at least privates 121 and an at least privates 122, the privates
121 have aforementioned first clad 1111, and the privates group 13 has at least one the 5th wire 131 and at least one the 6th wire
132, the 5th wire 131 has aforementioned first clad 1111, and second clad 1121 is while coating first bag
Coating 1111 and second, four, six wire 112,122,132, the first, second and third wire group 11,12,13 also can be differential
Signal pair.
Fig. 4 is referred to, is the sectional view of the transmission unit structure fourth embodiment that the present invention reduces crosstalk signal, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
The transmission unit structure 1 that crosstalk signal is reduced described in the present embodiment that do not exist together of first embodiment is with more one second wire group
12 and one first earth lead 14 and one second earth lead 15 and one the 3rd earth lead 16, the second wire group 12 has extremely
A few privates 121 and an at least privates 122, the privates 121 has aforementioned first clad 1111, and the 4th
Wire 122 has aforementioned second clad 1121, and the first and second wire group 11,12 is differential signal pair, and first ground connection is led
Line 14 is provided at the side of the first wire group 11, and second earth lead 15, should between the first and second wire group 11,12
3rd earth lead 16 is provided at the opposite side of the contrary first wire group 11 of the second wire group 12, one the 3rd clad 1113
Be while coat aforementioned first and second clad 1111,1121 and first, second and third earth lead 14,15,16, and this first and second
Clad 1111,1121 dielectric coefficients are can be identical, and higher than the 3rd clad 1113.
The present embodiment is the mode for having the transmission configuration of earth lead differential signal, and the first clad is utilized between differential signal pair
1111 and second have height dielectric difference, high dielectric material electric field, news between clad 1121 and the 3rd clad 1113
Number pair between using dielectric materials reduce electric field aggregation, reduce signal pair between cross-talk noise interference.
The sectional view that Fig. 5 is the embodiment of transmission unit structure the 5th that the present invention reduces crosstalk signal is referred to, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
The transmission unit structure 1 not existed together for the reduction crosstalk signal of first embodiment is with more one second wire group 12 and one the
Three wires group 13, the second wire group 12 has an at least privates 121 and an at least privates 122, the privates
121 have the first clad 1111, and the privates 122 have the second clad 1121, and the privates group 13 has at least
One the 5th wire 131 and at least one the 6th wire 132, the 5th wire 131 has the first clad 1111, the 6th wire
132 have the second clad 1121, and the first, second and third wire group 11,12,13 is single-ended signal pair, aforementioned first and second bag
Coating 1111,1112 is coated by one the 3rd clad 1113, the dielectric coefficient of the first clad 1111 higher than this second
Clad 1121.
The present embodiment also can be the mode that no ground line differential signal transmits configuration, between differential signal pair using first and second,
Three clads 1111, between 1121,1113 have height dielectric difference, high dielectric material electric field, between signal pair utilize low Jie
Electric material reduces electric field aggregation, reduces the interference of cross-talk noise between signal pair.
Fig. 6 is referred to, is the sectional view of the transmission unit structure sixth embodiment that the present invention reduces crosstalk signal, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
First embodiment do not exist together for it is described reduction crosstalk signal transmission unit structure 1, be to include：One first wire group 11,
Second clad 1121；
The first wire group 11 has at least one first wire 111 and at least one second wire 112, first wire
111 have one first clad 1111, and first and second wire 111,112 is axially opposing should to arrange；
Second clad 1121 is to coat aforementioned first clad 1111 and second wire 112.
The sectional view that Fig. 7 is the embodiment of transmission unit structure the 7th that the present invention reduces crosstalk signal is referred to, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
The transmission unit structure 1 not existed together for the reduction crosstalk signal of first embodiment is with more one second wire group 12 and one the
One earth lead 14 and one second earth lead 15 and one the 3rd earth lead 16, the first wire of the first wire group 11
111 and second wire 112 have aforementioned first clad 1111, the second wire group 12 have an at least privates 121
And an at least privates 122, the privates 121 and the privates 122 have aforementioned first clad 1111, and described the
First, two wire groups 11,12 are differential signal pair, and first earth lead 14 is provided at the side of the first wire group 11, and this second
Between the first and second wire group 11,12, the 3rd earth lead 16 is provided at the phase of the second wire group 12 to earth lead 15
The opposite side of the anti-first wire group 11, the outside of first, second and third earth lead 14,15,16 has the second clad 1121,
The dielectric coefficient of first clad 1111 is higher than second clad 1121.
The present embodiment is the mode for having the transmission configuration of earth lead differential signal, and the first clad is utilized between differential signal pair
1111 and second have height dielectric difference between clad 1121, and high dielectric material electric field utilizes low dielectric between signal pair
Material reduces electric field aggregation, reduces the interference of cross-talk noise between signal pair.
The sectional view that Fig. 8 is the embodiment of transmission unit structure the 8th that the present invention reduces crosstalk signal is referred to, as schemed institute
Show, the present embodiment is identical with aforementioned 7th embodiment part-structure, therefore here will not be described in great detail, only the present embodiment and aforementioned
Not existing together for seven embodiments is coated on for the transmission unit structure 1 for reducing crosstalk signal with more one the 3rd clad 1113
Outside aforementioned first and second clad 1111,1121.
The present embodiment is the mode for having the transmission configuration of earth lead differential signal, and the first clad is utilized between differential signal pair
1111 and second have height dielectric difference, high dielectric material electric field, news between clad 1121 and the 3rd clad 1113
Number pair between using dielectric materials reduce electric field aggregation, reduce signal pair between cross-talk noise interference.
The sectional view that Fig. 9 is the embodiment of transmission unit structure the 9th that the present invention reduces crosstalk signal is referred to, as schemed institute
Show, the present embodiment is identical with aforementioned 8th embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
Not existing together for 8th embodiment is that the transmission unit structure 1 for reducing crosstalk signal has more one the 4th clad 1114, should
4th clad 1114 coats aforementioned first and second wire group 11,12, and is coated on outside first clad 1111, then with this
Second clad 1121 is together coated by the 3rd clad 1113, and the 4th clad 1114 is aluminium foil.
The axonometric chart that Figure 10 is the embodiment of transmission unit structure the tenth that the present invention reduces crosstalk signal is referred to, as schemed institute
Show, the present embodiment is identical with aforementioned first embodiment part-structure, therefore here will not be described in great detail, but the present embodiment with it is aforementioned
First and second wire 111,112 of transmission unit structure 1 not existed together for the reduction crosstalk signal of first embodiment is
Axially interlaced combination.
Pass through Network Analyzer (NA) certain for the transmission unit structure of the reduction crosstalk signal of foregoing embodiments
Under conditions of, measure different dielectric coefficient and arrange the impact transmitted to signal.
Permutation and combination method be using the 7th embodiment as explanation, and respectively with change first clad 1111 and this
The height dielectric difference of two clads 1121, is measured data after the test of aspect A electromagnetism refering to Figure 11, and aspect A is by first and second
The dielectric coefficient that clad 1111,1121 is used is all 3.8.
It is the dielectric system for using the first clad 1111 for measured data aspect B after the test of aspect B electromagnetism refering to Figure 12
Number is 3.2, and the dielectric coefficient that the second clad 1121 is used is 3.8.
It is the dielectric system for using the first clad 1111 for measured data aspect C after the test of aspect C electromagnetism refering to Figure 13
Number is 3.8, and the dielectric coefficient that the second clad 1121 is used is 3.2.
It is the dielectric system that measured data aspect D system uses the first clad 1111 after the test of aspect D electromagnetism refering to Figure 14
Number is 3.2, and the dielectric coefficient that the second clad 1121 is used is 3.2.
Finally measure
The different dielectric coefficient of table 1 arranges the impact data to signal transmission
Data obtained by aspect C are optimal, therefore the dielectric of the clad outside the wire mainly as conduction signal
Coefficient then can effectively reduce crosstalk signal higher than other wires.
It is described above to be merely exemplary for the purpose of the present invention, and it is nonrestrictive, and those of ordinary skill in the art understand,
In the case of the spirit and scope limited without departing from claims appended below, many modifications can be made, be changed, or be waited
Effect, but fall within protection scope of the present invention.
Claims (6)
1. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first wire is with one first cladding
Layer, second wire has one second clad, and first clad and second clad are respectively coated by described first
Wire outside and second wire outside, first and second wire be it is axially opposing should arrange, the first clad dielectric coefficient
Higher than second clad；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；
Also there is one second wire group and a privates group, the second wire group is led with an at least privates and at least one the 4th
Line, the privates has aforementioned first clad, and the privates group is led with least one the 5th wire and at least one the 6th
Line, the 5th wire has aforementioned first clad, second clad be and meanwhile coat first clad and this second,
4th, six wire.
2. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first wire is with one first cladding
Layer, second wire has one second clad, and first clad and second clad are respectively coated by described first
Wire outside and second wire outside, first and second wire be it is axially opposing should arrange, the first clad dielectric coefficient
Higher than second clad；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；
Also there is one second wire group and one first earth lead and one second earth lead and one the 3rd earth lead, second wire
Group has an at least privates and an at least privates, and the privates has aforementioned first clad, the privates
With aforementioned second clad, the first and second wire group is differential signal pair, and first earth lead is provided at this and first leads
Line group side, between the first and second wire group, the 3rd earth lead is provided at second wire to second earth lead
The opposite side of the contrary first wire group of group, one the 3rd clad is while coating aforementioned first and second clad, described first wraps
Coating is higher than the 3rd clad with the dielectric coefficient of second clad.
3. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first wire is with one first cladding
Layer, second wire has one second clad, and first clad and second clad are respectively coated by described first
Wire outside and second wire outside, first and second wire be it is axially opposing should arrange, the first clad dielectric coefficient
Higher than second clad；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；
Also there is one second wire group and a privates group, the second wire group is led with an at least privates and at least one the 4th
Line, third and fourth wire has aforementioned first clad, and the privates group has at least one the 5th wire and at least the 6th
Wire, the five, the six wires have aforementioned first clad, and the second wire group and the privates group are single-ended signal
Right, aforementioned first clad is coated by aforementioned second clad, and the first clad dielectric coefficient is higher than second bag
Coating.
4. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first and second wire is axially opposing answering
Arrange；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；Also have one second
Wire group and one first earth lead and one second earth lead and one the 3rd earth lead, the first of the first wire group leads
Line and second wire have one first clad, and the second wire group is led with an at least privates and at least one the 4th
Line, the privates and the privates have aforementioned first clad, and the first and second wire group is differential signal pair, should
First earth lead is provided at the first wire group side, and between the first and second wire group, this for second earth lead
Three earth leads are provided at the opposite side of the contrary first wire group of the second wire group, outside first, second and third earth lead
With the second clad, the dielectric coefficient of first clad is higher than second clad.
5. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first and second wire is axially opposing answering
Arrange；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；Also have one second
Wire group and one first earth lead and one second earth lead and one the 3rd earth lead, the first of the first wire group leads
Line and second wire have one first clad, and the second wire group is led with an at least privates and at least one the 4th
Line, the privates and the privates have aforementioned first clad, and the first and second wire group is differential signal pair, should
First earth lead is provided at the first wire group side, and between the first and second wire group, this for second earth lead
Three earth leads are provided at the opposite side of the contrary first wire group of the second wire group, outside first, second and third earth lead
With the second clad, the dielectric coefficient of first clad is higher than second clad；Also there is one the 3rd clad, cladding
Outside aforementioned first and second clad.
6. it is a kind of reduce crosstalk signal transmission unit structure, it is characterised in that be to include：
One first wire group, with least one first wire and at least one second wire, first and second wire is axially opposing answering
Arrange；First wire is a Communication signal wire；Second wire is an earth lead or a Communication signal wire；Also have one second
Wire group and one first earth lead and one second earth lead and one the 3rd earth lead, the first of the first wire group leads
Line and second wire have one first clad, and the second wire group is led with an at least privates and at least one the 4th
Line, the privates and the privates have aforementioned first clad, and the first and second wire group is differential signal pair, should
First earth lead is provided at the first wire group side, and between the first and second wire group, this for second earth lead
Three earth leads are provided at the opposite side of the contrary first wire group of the second wire group, outside first, second and third earth lead
With the second clad, the dielectric coefficient of first clad is higher than second clad；Also there is one the 4th clad, it is described
4th clad is aluminium foil, and the 4th clad coats aforementioned first and second wire group, and is coated on outside aforementioned first clad
Portion.
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| CN201130559Y (en) * | 2007-10-22 | 2008-10-08 | 领迅电线工业(上海)有限公司 | Non-shielding symmetrical data cable |
| WO2009130859A1 (en) * | 2008-04-25 | 2009-10-29 | 沖電線株式会社 | High-speed shielded flat cable |
| CN101908392A (en) * | 2009-06-08 | 2010-12-08 | 住友电气工业株式会社 | Twinax cable |
| CN202120642U (en) * | 2011-06-29 | 2012-01-18 | 高位企业有限公司 | Transmission unit structure for reducing crosstalk signals |
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| CN102855974A (en) | 2013-01-02 |
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