CN203966672U - A kind of low-k eight class cables - Google Patents
A kind of low-k eight class cables Download PDFInfo
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- CN203966672U CN203966672U CN201420409770.7U CN201420409770U CN203966672U CN 203966672 U CN203966672 U CN 203966672U CN 201420409770 U CN201420409770 U CN 201420409770U CN 203966672 U CN203966672 U CN 203966672U
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Abstract
A kind of low-k eight class cables, comprise some conductors, every described conductor is wrapped with a minute insulating barrier, described insulating barrier is wrapped with sub-shield, all described conductors are wrapped with primary shield, described primary shield is outside equipped with auxiliary screen, the described minute interior unordered a large amount of dielectric housings that are provided with of insulating barrier.The utility model can effectively promote the transmission performance of cable.
Description
Technical field
The utility model relates to a kind of low-k eight class cables, belongs to cables manufacturing field.
Background technology
Only seven class lines are defined to some extent in the world at present, the Siemon company of the U.S. announced to have developed eight class lines in 1999, eight class spider lines have the bandwidth of 1200MHz, make it that many services can be provided simultaneously, can process Terrestrial TV, CCTV, DAB, FM, audio frequency, IR control, 10/100 and 100/1000 Ethernet, video, phone, USB ancillary equipment etc.
Along with the development of technology, eight current class lines can be accomplished 2000MHz bandwidth, but under current technical conditions, are difficult to continue development.
Utility model content
The utility model, for solving prior art problem, provides the eight class lines that a kind of transmission performance is higher.
The technical solution of the utility model is: a kind of low-k eight class cables, comprise some conductors, every described conductor is wrapped with a minute insulating barrier, described insulating barrier is wrapped with sub-shield, all described conductors are wrapped with primary shield, described primary shield is outside equipped with auxiliary screen, the described minute interior unordered a large amount of dielectric housings that are provided with of insulating barrier.
As preferably, the described unordered radial and axial all uneven distributions that comprise along described conductor.
As preferably, the volume of all described dielectric housings is random distribution.
As preferably, described dielectric housing is the cavity spherical in shape being arranged in described minute insulating barrier, in described cavity, is filled with air.
As preferably, described cavity roughly seals mutually with the external world, when the air in described cavity reaches certain pressure, can exchange on a small quantity with the external world; The air pressure of described cavity is the highest is not less than 1.5 times of atmospheric pressure.
As preferably, the outer surface of described minute insulating barrier is provided with the sealant of one deck densification.
As preferably, described auxiliary screen is by some single network structures that interspersed wire filaments form mutually.
As preferably, described auxiliary screen interts by some wire fibre bundles that comprise that several wire filaments forms the network structure forming mutually.
As preferably, the quantity of described conductor is even numbers, and adjacent conductor is wound twisted-pair feeder mutually.
Eight class lines are as the highest cable of current technical specification, high to its transmission performance requirement, not only have the requirement on conductor, and also there is further requirement on basis to insulating barrier.Eight current class lines comprise some wires mostly, and wire outer wrapping ground floor insulating barrier, in the shielding of ground floor insulating barrier outer wrapping ground floor, penetrates in sheath after then some wires being wrapped up by second layer screen.
Applicant finds after scrutinizing, and because cable is not equal to twisted-pair feeder, so between adjacent wires, does not have the ability of eliminating interference by difference, and cable transmission performance cannot effectively be promoted.The applicant promotes the anti-interference of cable by increasing multilayer screen.Meanwhile, the applicant is by a large amount of dielectric housings that adulterate at insulating barrier, for promoting the dielectric constant of cable itself.Because the dielectric constant of air is minimum, be 1, the dielectric constant of other insulating material is all high than air, and due to the uneven distribution of dielectric housing, make the signal of telecommunication when by cable, at cable surface, form inhomogeneous electric field, between adjacent electric field, influence each other and offset, effectively reduced the energy loss when signal of telecommunication produces electric field.
The conductor of cable, at center, is charged, and outermost layer is atmosphere, so just forms an electric field.Because the relative dielectric constant of air approaches 1, and all solid insulating materials are all greater than 1, and the intensity in an electric field is to distribute by the dielectric constant of various insulating material, is inversely proportional to dielectric constant.Therefore the applicant's a large amount of doping dielectric housings in insulating barrier, reduce the density as the solid of insulating barrier by the air in dielectric housing, reduce the dielectric constant of insulating barrier, improve the transmission performance of cable.If the dielectric constant of bi-material differs greatly simultaneously, the field intensity between them is extremely inhomogeneous, can cause the material that dielectric constant is low (such as air) field intensity very large on the contrary, first breakdown adverse consequences.Therefore a large amount of doping air in insulating barrier, can promote the electric field of insulating barrier inside to a certain extent, and the electric field reducing between insulating barrier and extraneous air is poor, simultaneously by unordered random distribution, electric field is down to minimum to the interference of the signal of telecommunication.
The dielectric housing that is roughly sealing forming by fine and close sealant can make air in chamber keep stable, cable is when the signal of telecommunication of transmitting high speed variation, also there is variation at a high speed in the electric field in dielectric housing, because the dielectric constant of air is lower in dielectric housing, be easy to be ionized, cause the temperature of air in dielectric housing to raise, but dielectric housing and extraneous sealing, the electric field producing in this chamber is stablized, and be convenient to subdue with adjacent electric field, and can be because of the mobile even generation that causes insulating barrier internal electric field of air, and lose the effect that promotes transmission performance.
The effect of twisted-pair feeder is to make noise that external disturbance produces on two wires (in professional domain, useless signal is called to noise) identical, so that follow-up difference channel extracts useful signal, difference channel is a subtraction circuit, the signal of two input homophases (common-mode signal) cancel out each other (m-n), anti-phase signal is equivalent to x-(-y), be enhanced.In theory, m=n in twisted-pair feeder and difference channel, x=y, is equivalent to so interference signal and is completely eliminated, and useful signal doubles, although there is different in actual motion, the lifting effect of signal is still quite obvious.
In sum, the utlity model has following advantage:
1, effectively promote the transmission performance of cable;
2, low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is A place partial enlarged drawing in Fig. 1.
In figure, 1, conductor, 2, minute insulating barrier, 3, sub-shield, 4, primary shield, 5, auxiliary screen, 6, sheath, 7, dielectric housing.
Embodiment
With embodiment, the utility model is described in further detail below.
Embodiment mono-:
A kind of low-k eight class cables, comprise eight conductors 1, form between two twisted-pair feeder, every conductor 1 is wrapped with minute insulating barrier 2, insulating barrier is wrapped with sub-shield 3, all conductors 1 are wrapped with primary shield 4, and primary shield 4 is outside equipped with auxiliary screen 5, and auxiliary screen 5 is outside equipped with sheath 6.
Divide the interior unordered a large amount of dielectric housings 7 that are provided with of insulating barrier 2, the unordered radial and axial all uneven distributions that comprise along conductor 1, the volume of all dielectric housings 7 is random distribution.Dielectric housing 7, for to be arranged at the cavity spherical in shape in minute insulating barrier 2, is filled with air in cavity, cavity roughly seals mutually with the external world, when the air in cavity reaches certain pressure, can exchange on a small quantity with the external world; The air pressure of cavity is the highest is not less than 1.5 times of atmospheric pressure.
Auxiliary screen 5 is by some single network structures that interspersed wire filament forms mutually.
Through actual test, eight class cables of the present utility model, bandwidth can be accomplished 2100 ~ 2400MHz, than eight traditional class cables, has obvious lifting.
Embodiment bis-:
Be with the difference of embodiment mono-, auxiliary screen 5 interts by some wire fibre bundles that comprise that several wire filaments forms the network structure forming mutually.
Claims (9)
1. low-k eight class cables, comprise some conductors (1), every described conductor (1) is wrapped with a minute insulating barrier (2), described insulating barrier is wrapped with sub-shield (3), all described conductors (1) are wrapped with primary shield (4), described primary shield (4) is outside equipped with auxiliary screen (5), it is characterized in that: the described minute interior unordered a large amount of dielectric housings (7) that are provided with of insulating barrier (2).
2. low-k eight class cables according to claim 1, is characterized in that: the described unordered radial and axial all uneven distributions that comprise along described conductor (1).
3. according to the eight class cables of low-k described in claim 1 or 2, it is characterized in that: the volume of all described dielectric housings (7) is random distribution.
4. low-k eight class cables according to claim 3, is characterized in that: described dielectric housing (7), for being arranged at the cavity spherical in shape in described minute insulating barrier (2), is filled with air in described cavity.
5. low-k eight class cables according to claim 4, is characterized in that: described cavity roughly seals mutually with the external world, when the air in described cavity reaches certain pressure, can exchange on a small quantity with the external world; The air pressure of described cavity is the highest is not less than 1.5 times of atmospheric pressure.
6. low-k eight class cables according to claim 5, is characterized in that: described minute insulating barrier (2) outer surface be provided with the sealant of one deck densification.
7. low-k eight class cables according to claim 1, is characterized in that: described auxiliary screen (5) is by some single network structures that interspersed wire filaments form mutually.
8. low-k eight class cables according to claim 1, is characterized in that: described auxiliary screen (5) interts by some wire fibre bundles that comprise that several wire filaments forms the network structure forming mutually.
9. low-k eight class cables according to claim 1, it is characterized in that: the quantity of described conductor (1) is even numbers, and adjacent conductor (1) are wound twisted-pair feeder mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409770.7U CN203966672U (en) | 2014-07-24 | 2014-07-24 | A kind of low-k eight class cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409770.7U CN203966672U (en) | 2014-07-24 | 2014-07-24 | A kind of low-k eight class cables |
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| Publication Number | Publication Date |
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| CN203966672U true CN203966672U (en) | 2014-11-26 |
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| CN201420409770.7U Active CN203966672U (en) | 2014-07-24 | 2014-07-24 | A kind of low-k eight class cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822973A (en) * | 2022-06-06 | 2022-07-29 | 深圳讯诺科技有限公司 | Combined insulation high-speed core wire and combined application method of high-speed core wire |
-
2014
- 2014-07-24 CN CN201420409770.7U patent/CN203966672U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822973A (en) * | 2022-06-06 | 2022-07-29 | 深圳讯诺科技有限公司 | Combined insulation high-speed core wire and combined application method of high-speed core wire |
| CN114822973B (en) * | 2022-06-06 | 2023-11-10 | 深圳讯诺科技有限公司 | Combined insulating high-speed core wire and combined application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Huzhou, Zhejiang Province, Nanxun District, Zhen Zhen Road, No. 8 Patentee after: Zhejiang Zhengdao Technology Co.,Ltd. Address before: Huzhou, Zhejiang Province, Nanxun District, Zhen Zhen Road, No. 8 Patentee before: ZHEJIANG ZHENGDAO LAN CABLE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |