CN111210931A - Double-layer shielding high-speed transmission cable - Google Patents
Double-layer shielding high-speed transmission cable Download PDFInfo
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- CN111210931A CN111210931A CN202010132388.6A CN202010132388A CN111210931A CN 111210931 A CN111210931 A CN 111210931A CN 202010132388 A CN202010132388 A CN 202010132388A CN 111210931 A CN111210931 A CN 111210931A
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- layer
- shielding
- double
- speed transmission
- transmission cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- Insulated Conductors (AREA)
Abstract
The invention discloses a double-layer shielding high-speed transmission cable which comprises parallel line pairs, a first shielding belt and a second shielding belt, wherein the first shielding belt is coated on the parallel lines to the outside, and the second shielding belt is coated on the first shielding belt. The invention relates to a double-layer shielding high-speed transmission cable, which can effectively enhance the shielding effect and reduce the signal loss by arranging a first shielding belt and a second shielding belt; and the stability of cable is better, and the electromagnetic field of cable is more perfect, makes wire rod signal transmission bandwidth increase, and the transmission of 50G can be satisfied to the single channel.
Description
Technical Field
The invention relates to the field of high-speed transmission lines, in particular to a double-layer shielding high-speed transmission cable.
Background
Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The device is erected in the air or installed underground or underwater for telecommunication or power transmission. The insulated wire is formed by arranging one or more mutually insulated conductive wire cores in a sealed sheath. It may be coated with a protective coating for transmitting, distributing electrical energy or transmitting electrical signals. The difference between the cable and the common wire is mainly that the cable is large in size and complex in structure.
However, the existing cables are all provided with a layer of shielding layer, and due to the improvement of the transmission rate, the single-layer shielding effect of the existing cables is poor, and the structural stability of the existing cables is poor, so that the transmission performance of the cables is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a double-layer shielding high-speed transmission cable which can effectively enhance the shielding effect and reduce the signal loss; and the stability of cable is better, and the electromagnetic field of cable is more perfect, makes wire rod signal transmission bandwidth increase, and the transmission of 50G can be satisfied to the single channel.
The purpose of the invention is realized by the following technical scheme:
a double-shielded high-speed transmission cable comprising: the shielding device comprises parallel line pairs, a first shielding belt and a second shielding belt, wherein the first shielding belt is coated on the parallel lines to the outside, and the second shielding belt is coated on the first shielding belt.
In one embodiment, the first shielding belt is wrapped outside the parallel lines in a longitudinal wrapping manner, and the second shielding belt is wrapped outside the first shielding belt in a winding manner.
In one embodiment, the parallel line pair includes two transmission cores disposed in parallel, and each transmission core includes a central conductor and an insulating layer, and the insulating layer covers the central conductor.
In one embodiment, the shielding strip further comprises two ground wires, the two ground wires are symmetrically located at two side edges of the parallel line pair respectively, and the two ground wires are arranged outside the second shielding strip in parallel respectively.
In one embodiment, the ground wire further comprises at least one outer tape wrapping the outer side walls of the two ground wires and the second shielding tape.
In one embodiment, the outer tape is a polyester tape.
In one embodiment, the insulating layer is a foamed insulating layer or a solid insulating layer.
In one embodiment, the first shielding tape includes a first metal layer, a first glue layer and a first PET layer, one side of the first glue layer is attached to the first metal layer, the first PET layer is attached to one side of the first glue layer away from the first metal layer, and the first PET layer covers the parallel lines outwards.
In one embodiment, the second shielding tape includes a second metal layer, a second glue layer and a second PET layer, one side of the second glue layer is attached to the second metal layer, and the second metal layer of the second shielding tape is wrapped outside the first shielding tape, so that the first metal layer and the second metal layer are attached to each other.
In one embodiment, the first metal layer is a copper layer, an aluminum layer or a silver layer, and the second metal layer is a copper layer, an aluminum layer or a silver layer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a double-layer shielding high-speed transmission cable, which can effectively enhance the shielding effect and reduce the signal loss by arranging a first shielding belt and a second shielding belt; and the stability of cable is better, and the electromagnetic field of cable is more perfect, makes wire rod signal transmission bandwidth increase, and the transmission of 50G can be satisfied to the single channel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a double-shielded high-speed transmission cable according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a double-shielded high-speed transmission cable shown in fig. 1 from another perspective.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A double shielded high speed transmission cable 10 comprising: the shielding structure comprises a parallel line pair 100, a first shielding tape 200 and a second shielding tape 300, wherein the first shielding tape 200 is wrapped outside the parallel line pair 100, and the second shielding tape 300 is wrapped on the first shielding tape 200.
It should be noted that the parallel line pair 100 is used for transmitting high-frequency data; the first shielding tape 200 is used for shielding the wire pair for the first time; the second shielding tape 300 is used to achieve a second shielding of the wire pairs. Therefore, the shielding effect can be effectively enhanced and the signal loss is reduced by arranging the two layers of shielding belts; and the two layers of shielding belts are used for covering the parallel line pairs, so that the stability of the cable is better, the electromagnetic field of the cable is more perfect, the transmission bandwidth of a wire signal is increased, and a single channel can meet the transmission of 50G. In addition, two shielding belts make the structure of cable more firm, and structural stability is better, and then can guarantee that the cable has high-speed data transmission ability.
It should be noted that the first shielding tape is wrapped outside the parallel lines in a longitudinal wrapping manner, and the second shielding tape is wrapped outside the first shielding tape in a winding manner. So, through indulging the package to the parallel line pair, can be so that the structure of cable is more level and smooth on the one hand, and on the other hand can be so that the shielding effect of cable is better again. But so then can't guarantee the structural stability of cable, consequently indulge the package cladding back, carry out again the package cladding, then can make the structural stability of cable better, shield more interference signal, further improve the data transmission ability of cable.
Referring to fig. 1, the parallel line pair 100 includes two parallel transmission core lines, the transmission core line includes a central conductor 110 and an insulating layer 120, and the insulating layer 120 covers the central conductor 110. It should be noted that the central conductor 110 is used for transmitting high-speed data, and the insulating layer 120 is used for isolating the two conductors, does not interfere with each other, and plays a certain role in shielding.
The insulating layer is a foamed insulating layer or a solid insulating layer. In this embodiment, can set for the material of insulating layer according to actual demand, moreover because the foaming insulating layer is the insulating layer of cellular structure, under the same performance, the whole dielectric constant of foaming insulating structure is less to make the holistic size of cable less, be favorable to customer's transportation and packing, and can also use foaming insulating structure can also make the high frequency performance of cable better.
It should be noted that the high-speed transmission cable further includes two ground wires 400, the two ground wires are respectively symmetrically located at two side edges of the parallel line pair, and the two ground wires are respectively arranged outside the second shielding band in parallel. So, through setting up two ground wires, can conveniently process on the one hand, improve machining efficiency, on the other hand can be so that the structural stability of cable is better again, and high-speed transmission performance compares in single ground wire structure, and speed is faster, and data transmission is more stable.
Referring to fig. 1 and 2, the high-speed transmission cable further includes at least one outer tape 500 covering the outer sidewalls of the two ground wires and the second shielding tape. Preferably, the outer-layer tape is a polyester tape. Preferably, the high speed transmission cable comprises two outer layers of tape. So, through setting up one deck or two-layer outer band, can be so that the structure of cable is more firm, and is more stable, can guarantee the transmission of the high frequency data of cable from structural, in addition, when including the cladding of double-deck shielding area, two ground wires take the parallel skin of fixing at the second shielding area through 1 ~ 2 layers of outer layer package, make transmission performance can satisfy the requirement of high frequency (≧ 40 GHz). Therefore, through setting up double-deck shielding and two ground wire structures, can effectual reduction cable's hardness for the cable is softer.
It should be noted that the first shielding tape includes a first metal layer, a first glue layer and a first PET layer, one side of the first glue layer is attached to the first metal layer, the first PET layer is attached to one side of the first glue layer away from the first metal layer, and the first PET layer covers the parallel lines to the outside.
It should be noted that the second shielding tape includes a second metal layer, a second glue layer and a second PET layer, one side of the second glue layer is attached to the second metal layer, and the second metal layer of the second shielding tape is wrapped outside the first shielding tape, so that the first metal layer and the second metal layer are attached to each other.
Therefore, the metal shielding layer can be directly contacted with the two ground wires by arranging the metal layer to cover the wire pairs outwards, and the grounding effect is realized.
Preferably, the first metal layer is a copper layer, an aluminum layer or a silver layer, and the second metal layer is a copper layer, an aluminum layer or a silver layer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention relates to a double-layer shielding high-speed transmission cable, which can effectively enhance the shielding effect and reduce the signal loss by arranging a first shielding belt and a second shielding belt; and the stability of cable is better, and the electromagnetic field of cable is more perfect, makes wire rod signal transmission bandwidth increase, and the transmission of 50G can be satisfied to the single channel.
The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A double shielded high speed transmission cable, comprising: the shielding device comprises parallel line pairs, a first shielding belt and a second shielding belt, wherein the first shielding belt is coated on the parallel lines to the outside, and the second shielding belt is coated on the first shielding belt.
2. The double-shielded high-speed transmission cable according to claim 1, wherein the first shielding tape is wrapped around the parallel wires in a longitudinal wrapping manner, and the second shielding tape is wrapped around the first shielding tape in a winding manner.
3. The double-shielded high-speed transmission cable according to claim 1, wherein the parallel wire pair includes two parallel transmission cores, the transmission cores include a center conductor and an insulating layer, and the insulating layer covers the center conductor.
4. The double-layer shielding high-speed transmission cable according to any one of claims 1 to 3, further comprising two ground wires, wherein the two ground wires are symmetrically located at two side edges of the parallel line pair respectively, and the two ground wires are arranged outside the second shielding band in parallel respectively.
5. The double-shielded high-speed transmission cable according to claim 4, further comprising at least one outer tape wrapped around the two ground wires and an outer sidewall of the second shielding tape.
6. The double-shielded high-speed transmission cable according to claim 5, wherein the outer tape is polyester tape.
7. The double shielded high speed transmission cable of claim 3, wherein the insulation layer is a foamed insulation layer or a solid insulation layer.
8. The double-layer shielding high-speed transmission cable according to claim 1, wherein the first shielding tape comprises a first metal layer, a first glue layer and a first PET layer, one side of the first glue layer is attached to the first metal layer, the first PET layer is attached to one side of the first glue layer away from the first metal layer, and the first PET layer covers the parallel lines outwards.
9. The double-layer shielding high-speed transmission cable according to claim 8, wherein the second shielding tape comprises a second metal layer, a second glue layer and a second PET layer, one side surface of the second glue layer is attached to the second metal layer, and the second metal layer of the second shielding tape is coated outside the first shielding tape, so that the first metal layer and the second metal layer are attached to each other.
10. The double-shielded high-speed transmission cable according to claim 9, wherein the first metal layer is a copper layer, an aluminum layer or a silver layer, and the second metal layer is a copper layer, an aluminum layer or a silver layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132388.6A CN111210931A (en) | 2020-02-29 | 2020-02-29 | Double-layer shielding high-speed transmission cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132388.6A CN111210931A (en) | 2020-02-29 | 2020-02-29 | Double-layer shielding high-speed transmission cable |
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| Publication Number | Publication Date |
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| CN111210931A true CN111210931A (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010132388.6A Pending CN111210931A (en) | 2020-02-29 | 2020-02-29 | Double-layer shielding high-speed transmission cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649108A (en) * | 2021-11-23 | 2022-06-21 | 三元科技（深圳）有限公司 | Differential high-speed cable, jig for producing differential high-speed cable and process |
-
2020
- 2020-02-29 CN CN202010132388.6A patent/CN111210931A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649108A (en) * | 2021-11-23 | 2022-06-21 | 三元科技（深圳）有限公司 | Differential high-speed cable, jig for producing differential high-speed cable and process |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210706 Address after: 516029 Desai No.3 Industrial Park, Zhongkai Avenue, Huizhou City, Guangdong Province Applicant after: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Applicant after: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. Applicant after: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Applicant after: LTK ELECTRIC WIRE (CHANGZHOU) Ltd. Address before: 516006 Desai No.3 Industrial Park, Zhongkai Avenue, Huizhou City, Guangdong Province Applicant before: LTK ELECTRIC WIRE (HUIZHOU) Ltd. Applicant before: HUIZHOU LTK ELECTRONIC CABLE Co.,Ltd. Applicant before: SHENZHEN WOER SPECIAL CABLE Co.,Ltd. Applicant before: Shenzhen Woer Heat-shrinkable Material Co.,Ltd. Applicant before: LTK ELECTRIC WIRE (CHANGZHOU) Ltd. |
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