CN103000270A - SFP (small form-factor pluggable) high-frequency wire and method for producing same - Google Patents
SFP (small form-factor pluggable) high-frequency wire and method for producing same Download PDFInfo
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- CN103000270A CN103000270A CN201210454755XA CN201210454755A CN103000270A CN 103000270 A CN103000270 A CN 103000270A CN 201210454755X A CN201210454755X A CN 201210454755XA CN 201210454755 A CN201210454755 A CN 201210454755A CN 103000270 A CN103000270 A CN 103000270A
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- heart yearn
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 34
- 229920000728 polyester Polymers 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000009954 braiding Methods 0.000 claims abstract description 4
- 239000005030 aluminium foil Substances 0.000 claims description 30
- 238000005187 foaming Methods 0.000 claims description 24
- 238000009422 external insulation Methods 0.000 claims description 18
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 3
- 230000000712 assembly Effects 0.000 abstract 3
- 238000000429 assembly Methods 0.000 abstract 3
- 239000011888 foil Substances 0.000 abstract 3
- 239000004831 Hot glue Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses an SFP (small form-factor pluggable) high-frequency wire which comprises a plurality of core wire assemblies, a shielding layer and a sheath. The shielding layer covers the core wire assemblies, the sheath covers the shielding layer, each core wire assembly comprises two core wires, a ground wire, a first aluminum foil lapped covering and a self-adhesion polyester layer tape, each first aluminum foil lapped layer covers the corresponding two core wires and the corresponding ground wire, each self-adhesion polyester layer tape covers the corresponding first aluminum foil lapped layer, each core wire comprises a conductor, an inner insulating layer, a foamed layer and an outer insulating layer, and each inner insulating layer, the corresponding foamed layer and the corresponding outer insulating layer cover the corresponding conductor from inside to outside. The method for producing the high-frequency wire includes steps of (1), extruding the core wires; (2), forming the core wire assemblies; (3), forming a cable; (4), braiding the shielding layer; (5), and extruding the sheath. The SFP high-frequency wire and the method have the advantages that each inner insulating layer is additionally arranged between the corresponding conductor and the corresponding foamed layer and can reduce attenuation of signals transmitted by the conductor, accordingly, the transmission rate of the SFP high-frequency wire can be increased, the signals can be transmitted at the speed of 10G/s when the length of the SFP high-frequency wire is 10m, an attenuation value is lower than or equal to 54dB/10m, the resistance ranges from 95 omegas to 105 omegas, and the time delay differential is lower than or equal to 100ps/10m.
Description
Technical field
The present invention relates to a kind of high-frequency line and production method thereof, relate in particular to a kind of SFP high-frequency line and production method thereof.
Background technology
Compact package hot-pluggable module (Small Form-Factor Pluggables, be called for short SFP) be to design according to the GBIC interface, but allow the port density larger than GBIC (the transceiver number of per inch on the mainboard limit), therefore SFP also is known as " mini-GBIC ", SFP module volume ratio GBIC module reduces half, can dispose the port number that has more more than a times at identical panel, more compress size and power consumption, now the basic GBIC that replaces.
Carry out transfer of data by the SFP high-frequency line between the compact package hot-pluggable module.
At present, the heart yearn of a kind of SFP high-frequency line on the market is by conductor, coat successively foaming layer and the external insulation layer of this conductor from inside to outside.
Yet the conductor of above-mentioned SFP high-frequency line is foaming layer outward, and the foam hole that foaming layer has can cause the decay of conductor signal transmission, thereby reduces transmission rate.
Therefore, in the urgent need to a kind of SFP high-frequency line that can transmit more speed, especially need a kind of signal that when 10m is long, can transmit 10G/s.
Summary of the invention
The object of the present invention is to provide a kind of SFP high-frequency line that can transmit more speed, especially when 10m is long, can transmit the SFP high-frequency line of the signal of 10G/s.
For achieving the above object, SFP high-frequency line provided by the present invention comprises some heart yearn groups, the sheath that coats the screen of these some heart yearn groups and coat this screen, each heart yearn group comprise two heart yearns, a ground wire and coat the first aluminium foil of this two heart yearn, ground wire wrapped, coat the wrapped self-adhesion polyester layer band of this first aluminium foil, heart yearn comprises conductor and from inside to outside inner insulating layer, foaming layer and the external insulation layer of coating conductor.
Preferably, the foam degrees of the foaming layer of described heart yearn is 20～40%.
Preferably, the inner insulating layer thickness of described heart yearn is 0.04～0.08mm.
Preferably, the external insulation layer thickness of described heart yearn is 0.04～0.08mm.
Preferably, the wrapped pitch of the first aluminium foil of described two heart yearns is 5.0～7.5mm.
Preferably, the pitch of described self-adhesion polyester layer band is 6.0～7.8mm.
Preferably, the screen of these some heart yearn groups of described coating is from interior non-self-adhesion polyester layer band, the wrapped and woven shield of the second aluminium foil of being followed successively by outward.
Preferably, described conductor is silver-plated conductor.
The present invention also provides a kind of production method of SFP high-frequency line, and the method comprises by following steps and forming:
(1) heart yearn extrusion: adopt three-layer co-extruded technique extrusion to be followed successively by from inside to outside the heart yearn of conductor, inner insulating layer, foaming layer and external insulation layer structure;
(2) form the heart yearn group: two heart yearns and ground wire also are in the same place, the first aluminium foil, self-adhesion polyester layer band is wrapped on this two heart yearn and ground wire successively, and self-adhesion polyester layer band is wrapped to be that the self-adhesion polyester belt is wrapped wrapped upper and heat the self-adhesion polyester belt is adhered on the aluminium foil in the second aluminium foil;
(3) stranding: with some heart yearn group twisted synthesizing cables, that non-self-adhesion polyester belt, the second aluminium foil is wrapped on some heart yearn groups of this stranding successively;
(4) woven shield: the stranding that step (3) forms is woven the formation woven shield with braiding machine;
(5) sheath extruding: with extruder protective cover material extrusion on the woven shield that step (4) forms is formed sheath, thereby form the SFP high-frequency line.
SFP high-frequency line of the present invention is because heart yearn comprises conductor and from inside to outside inner insulating layer, foaming layer and the external insulation layer of coating conductor, only there is the prior art of the heart yearn of foaming layer, external insulation layer to compare outward with conductor, add an inner insulating layer between conductor and the foaming layer, this inner insulating layer can reduce the decay that conductor passes fast signal, thereby can improve the transmission rate of SFP high-frequency line, when 10m is long, can transmit the signal more than the 10G/s, pad value≤54dB/10m, impedance 95～105 Ω, delay inequality≤100ps/10m.
Description of drawings
Fig. 1 is the cross section structure schematic diagram of SFP high-frequency line of the present invention.
Fig. 2 is the flow chart of the production method of SFP high-frequency line shown in Figure 1.
Each description of reference numerals is as follows among the figure:
Embodiment
By describing technology contents of the present invention in detail, realized purpose and effect, give explanation below in conjunction with execution mode is detailed.
See also Fig. 1, the sheath 30 that SFP high-frequency line of the present invention comprises some heart yearn groups 10, coats the screen 20 of these some heart yearn groups 10 and coat this screen 20.
Each heart yearn group 10 comprises two heart yearns 11, a ground wire 12 and coats the self-adhesion polyester layer band 14 that the first aluminium foil of this two heart yearn 11, a ground wire 12 is wrapped 13, coat this first aluminium foil wrapped 13, and heart yearn 11 comprises conductor 111 and from inside to outside inner insulating layer 112, foaming layer 113 and the external insulation layer 114 of coating conductor 111.Conductor 111 is preferably silver-plated conductor.
Inner insulating layer 112 thickness of heart yearn 11 are preferably 0.04～0.08mm, more preferably 0.04～0.06mm.
External insulation layer 114 thickness of heart yearn 11 are preferably 0.04～0.08mm, more preferably 0.06～0.07mm.
The foam degrees of the foaming layer 113 of heart yearn 11 is preferably 20～40%, and more preferably 25～35%.
The pitch of the first aluminium foil wrapped 13 is preferably 5.0～7.5mm, 6.0～7.0mm more preferably, the wrapped pitch of the first aluminium foil can make inner insulating layer 112, foaming layer 113 and the external insulation layer 114 of heart yearn 11 internal structures be difficult for deforming in this scope when wrapped, especially foaming layer 113 is difficult for deforming, if it is inconsistent that this is the length of two heart yearns 11 that then can cause heart yearn the group 10 because heart yearn 11 of SFP high-frequency line deforms, the inconsistent increase that then can cause delay inequality of length, thus can not satisfy the transmission requirement of high-frequency line delay inequality.
Self-adhesion polyester layer band 14 contains hot melt adhesive, employing adheres on the first aluminium foil wrapped 13 it to the method for self-adhesion polyester layer band 14 heating, this has increased self-adhesion polyester layer band 14 to the first aluminium foil wrapped 13 in it and the coating dynamics of heart yearn 11, make it not yielding, reduce delay inequality, satisfy the transmission requirement of high-frequency line delay inequality.
The pitch of self-adhesion polyester layer band 14 is preferably 6.0～7.8mm, 6.5～7.5mm more preferably, this is because the pitch of self-adhesion polyester layer band 14 can make inner insulating layer 112, foaming layer 113 and the external insulation layer 114 of heart yearn 11 internal structures be difficult for deforming in this scope when wrapped, especially foaming layer 113 is difficult for deforming, and guarantees the transmission requirement of SFP high-frequency line delay inequality.Here be pointed out that the length of two heart yearns 11 that then can cause heart yearn group 10 is inconsistent if the heart yearn of high-frequency line 11 deforms, the inconsistent increase that then can cause delay inequality of length, thus can not satisfy the transmission requirement of SFP high-frequency line delay inequality.
Coat the screen 20 of some heart yearn groups 10 from interior non-self-adhesion polyester layer 21, the second aluminium foil wrapped 22 and the woven shield 23 of being followed successively by outward.
The present invention also provides a kind of production method of SFP high-frequency line, and the method comprises by following steps and forming:
(1) heart yearn extrusion: adopt three-layer co-extruded technique extrusion to be followed successively by from inside to outside the heart yearn of conductor, inner insulating layer, foaming layer and external insulation layer structure, wherein, inner insulating layer thickness is preferably 0.04～0.08mm, the external insulation layer thickness of heart yearn is preferably 0.04～0.08mm, and the preferred foam degrees of the foaming layer of heart yearn is 20～40%;
(2) form the heart yearn group: two heart yearns and ground wire also are in the same place, the first aluminium foil, self-adhesion polyester belt is wrapped on this two heart yearn and ground wire successively, the self-adhesion polyester belt is wrapped to be that the self-adhesion polyester belt is wrapped wrapped upper and heat the self-adhesion polyester belt is adhered on the first aluminium foil in the first aluminium foil, and the wrapped pitch of the first aluminium foil is preferably 5.0～7.5mm;
(3) stranding: with some heart yearn group twisted synthesizing cables, that non-self-adhesion polyester belt, aluminium foil is wrapped on some heart yearn groups of this stranding successively;
(4) woven shield: the stranding that step (3) forms is woven the formation woven shield with braiding machine;
(5) sheath extruding: with extruder protective cover material extrusion on the woven shield that step (4) forms is formed sheath, thereby form the SFP high-frequency line.
Through experimental verification, SFP high-frequency line of the present invention data transmission rate when length is 10m reaches more than the 10G/S, pad value≤54dB/10m, impedance 95～105 Ω, delay inequality≤100ps/10m.
In sum, SFP high-frequency line of the present invention is because heart yearn comprises conductor and from inside to outside inner insulating layer, foaming layer and the external insulation layer of coating conductor, only there is the prior art of the heart yearn of foaming layer, external insulation layer to compare outward with conductor, add an inner insulating layer between conductor and the foaming layer, this inner insulating layer can reduce the decay that conductor passes fast signal, thereby can improve the transmission rate of SFP high-frequency line, when 10m is long, can transmit the signal more than the 10G/s, pad value≤54dB/10m, impedance 95～105 Ω, delay inequality≤100ps/10m.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art that also can make multiple variation accordingly, but any and the present invention are equal to or similar variation all should be encompassed in the scope of claim of the present invention.
Claims (9)
1. SFP high-frequency line, it is characterized in that: comprise some heart yearn groups, the sheath that coats the screen of these some heart yearn groups and coat this screen, each heart yearn group comprise two heart yearns, a ground wire and coat the first aluminium foil of this two heart yearn, ground wire wrapped, coat the wrapped self-adhesion polyester layer band of this first aluminium foil, heart yearn comprises conductor and from inside to outside inner insulating layer, foaming layer and the external insulation layer of coating conductor.
2. SFP high-frequency line as claimed in claim 1, it is characterized in that: the foam degrees of the foaming layer of described heart yearn is 20～40%.
3. SFP high-frequency line as claimed in claim 1, it is characterized in that: the inner insulating layer thickness of described heart yearn is 0.04～0.08mm.
4. SFP high-frequency line as claimed in claim 1, it is characterized in that: the external insulation layer thickness of described heart yearn is 0.04～0.08mm.
5. SFP high-frequency line as claimed in claim 1, it is characterized in that: the wrapped pitch of the first aluminium foil of described two heart yearns is 5.0～7.5mm.
6. SFP high-frequency line as claimed in claim 1, it is characterized in that: the pitch of described self-adhesion polyester layer band is 6.0～7.8mm.
7. SFP high-frequency line as claimed in claim 1, it is characterized in that: the screen of these some heart yearn groups of described coating is from interior non-self-adhesion polyester layer band, the wrapped and woven shield of the second aluminium foil of being followed successively by outward.
8. SFP high-frequency line as claimed in claim 1, it is characterized in that: described conductor is silver-plated conductor.
9. production method such as claim 1 to 8 SFP high-frequency line as described in each is characterized in that the method comprises by following steps to form:
(1) heart yearn extrusion: adopt three-layer co-extruded technique extrusion to be followed successively by from inside to outside the heart yearn of conductor, inner insulating layer, foaming layer and external insulation layer structure;
(2) form the heart yearn group: two heart yearns and ground wire also are in the same place, the first aluminium foil, self-adhesion polyester layer band is wrapped on this two heart yearn and ground wire successively, and self-adhesion polyester layer band is wrapped to be that the self-adhesion polyester belt is wrapped wrapped upper and heat the self-adhesion polyester belt is adhered on the aluminium foil in the first aluminium foil;
(3) stranding: with some heart yearn group twisted synthesizing cables, that non-self-adhesion polyester belt, the second aluminium foil is wrapped on some heart yearn groups of this stranding successively;
(4) woven shield: the stranding that step (3) forms is woven the formation woven shield with braiding machine;
(5) sheath extruding: with extruder protective cover material extrusion on the woven shield that step (4) forms is formed sheath, thereby form the SFP high-frequency line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454755.XA CN103000270B (en) | 2012-11-02 | 2012-11-02 | A kind of SFP high-frequency line and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210454755.XA CN103000270B (en) | 2012-11-02 | 2012-11-02 | A kind of SFP high-frequency line and production method thereof |
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| Publication Number | Publication Date |
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| CN103000270A true CN103000270A (en) | 2013-03-27 |
| CN103000270B CN103000270B (en) | 2015-09-23 |
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| CN201210454755.XA Active CN103000270B (en) | 2012-11-02 | 2012-11-02 | A kind of SFP high-frequency line and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170523A (en) * | 2017-06-23 | 2017-09-15 | 东莞市瀛通电线有限公司 | A kind of SFP cables and its manufacture method |
| CN107170524A (en) * | 2017-07-04 | 2017-09-15 | 华迅工业(苏州)有限公司 | A kind of cloud computing high-speed transfer is parallel to SFP+ cables |
| CN107622829A (en) * | 2017-09-18 | 2018-01-23 | 江苏东方电缆材料有限公司 | A kind of multi-layer cable |
| CN112164485A (en) * | 2020-09-21 | 2021-01-01 | 百通赫思曼工业（苏州）有限公司 | Production process of high-speed high-frequency signal transmission copper conductor cable |
| CN114551005A (en) * | 2022-02-21 | 2022-05-27 | 百通赫思曼工业（苏州）有限公司 | Production process of foamed shell-added ultra-high-speed cable insulation core wire |
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| CN107170524B (en) * | 2017-07-04 | 2023-05-05 | 华迅工业(苏州)有限公司 | Cloud computing high-speed transmission parallel pair SFP+ cable |
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| CN114551005A (en) * | 2022-02-21 | 2022-05-27 | 百通赫思曼工业（苏州）有限公司 | Production process of foamed shell-added ultra-high-speed cable insulation core wire |
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| Publication number | Publication date |
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| CN103000270B (en) | 2015-09-23 |
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Address after: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee after: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. Address before: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee before: JINTAN WOER NEW MATERIAL Co.,Ltd. |
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Effective date of registration: 20210615 Address after: 516229 Desai No.3 Industrial Zone, Zhongkai Avenue, Chenjiang, Huizhou City, Guangdong Province Patentee after: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Patentee after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Address before: 518118 Wall Industrial Park, Lanjing North Road, Shenzhen Industrial Park, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee before: CHANGZHOU WOER HEAT-SHRINKABLE MATERIAL Co.,Ltd. |
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Effective date of registration: 20240110 Address after: No.6, Qingli Second Road, Shuikou Street, Huicheng District, Huizhou, Guangdong Province, 516000 Patentee after: LTK Electric Wire (Huizhou) Ltd. Patentee after: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. Patentee after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Patentee after: LTK ELECTRIC WIRE (CHANGZHOU) Ltd. Address before: 516229 Desai No.3 Industrial Zone, Zhongkai Avenue, Chenjiang, Huizhou City, Guangdong Province Patentee before: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Patentee before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. |