CN207637969U - A kind of heat safe super soft coaxial radio frequency cable - Google Patents
A kind of heat safe super soft coaxial radio frequency cable Download PDFInfo
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- CN207637969U CN207637969U CN201721381002.5U CN201721381002U CN207637969U CN 207637969 U CN207637969 U CN 207637969U CN 201721381002 U CN201721381002 U CN 201721381002U CN 207637969 U CN207637969 U CN 207637969U
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Abstract
The utility model discloses a kind of heat safe super soft coaxial radio frequency cables, the coaxial radio frequency cable includes inner wire, insulating layer, outer conductor, shielded layer and restrictive coating successively from inside to outside, insulating layer is expanded microporous polytetra fluoroethylene-EPTEE film covered insulating layer and polytetrafluoroethylraw raw material band wrapping insulation layer from inside to outside, inner wire is single or more and is twisted silver-plated circular copper wire, outer conductor is the plating silverskin of insulating layer outer surface coating, shielded layer is made of silver plated fiber braiding, and restrictive coating is the solid perfluoroethylene-propylene squeezed out.This cable greatly improves the flexibility of cable while ensureing wired signal transmission performance and high temperature resistance, while also reducing the size of cable.
Description
Technical field
The utility model is related to a kind of coaxial radio frequency cables, more particularly to a kind of heat safe super soft coaxial radio-frequency electricity
Cable.
Background technology
Modern communications develop to higher and higher transmission frequency and transmission rate direction, as the main matchmaker of traffic channel
The radio frequency coaxial-cable of Jie requires lower decaying and better shielding properties.Simultaneously with communication equipment miniaturization,
It complicates, it is desirable that cable dimension minimizes and has better mechanical performance.
Polytetrafluoroethylene (PTFE)（PTFE）Electrical property and environmental resistance it is excellent, dielectric constant only has 2.0~2.1, polytetrafluoro
The coaxial radio frequency cable of ethylene insulation is widely used in the field of the harsh environments such as aviation.
The soft coaxial radio frequency cable of teflon insulation, currently, the general this kind of construction of cable is followed successively by from inside to outside
Inner wire, insulating layer, outer conductor and restrictive coating, the silver-plated circular copper wire braiding layer that outer conductor is one layer or double-deck are constituted.It is this outer
Conductor structure, in order to ensure the multiple bending property of cable, the outside diameter of cable is bigger, corresponding plating silver dollar copper litz wire diameter
Bigger, with the increase of the outside diameter of cable, cable flexibility can also be deteriorated, moreover, the structure of this metal net, does not accomplish complete
Covering, shield effectiveness be not high.
Accordingly, it is desirable to provide a kind of new technical solution solves the above problems.
Utility model content
Under the premise of ensureing coaxial radio frequency cable signal transmission performance and high temperature resistance, the flexibility of cable is improved,
Reduce the size of cable, the utility model provides a kind of heat safe super soft coaxial radio frequency cable.
In order to solve the above technical problems, the heat safe super soft coaxial radio frequency cable of one kind provided by the utility model, it should
Coaxial radio frequency cable from inside to outside successively include inner wire, insulating layer, outer conductor, shielded layer and restrictive coating, the insulating layer by
Interior and be outside expanded microporous polytetra fluoroethylene-EPTEE film covered insulating layer and polytetrafluoroethylraw raw material band wrapping insulation layer, the inner wire is
Single or more is twisted silver-plated circular copper wire, and the outer conductor is the plating silverskin of insulating layer outer surface coating, and the shielded layer is by plating
Silver fiber braiding composition, the restrictive coating are the solid perfluoroethylene-propylene squeezed out.
In the above-mentioned technical solutions, the effective dielectric constant of insulating layer is 1.5~1.7.
Preferably, the outer conductor is the plating silverskin coated in insulating layer outer surface, and plating silver film thickness is not less than 2 μm.
Preferably, the shielded layer is silver plated fiber braiding layer, and braiding layer thickness is 0.08~0.30mm, silver plated fiber
Substrate fiber uses high-temperature fibre.
The beneficial effects of the utility model：The cable of the utility model, insulating layer are microporous PTFE second from inside to outside
Alkene film covered insulating layer and polytetrafluoroethylraw raw material band wrapping insulation layer, outer conductor are silver-plated to be coated in insulating layer outer surface
Layer, the signal transmission performance of this outer conductor is more preferable, and the thickness for plating silver coating is much smaller than the thickness of silver-coated copper wire braiding layer, significantly
Reduce the size and weight of cable, the flexibility of cable is also promoted；Increase silver plated fiber braiding layer outside outer conductor to make
For shielded layer, braiding layer is thinner, and more preferably, and the flexibility of fiber is substantially better than copper wire to shield effectiveness, density again smaller than
Copper wire.While ensureing wired signal transmission performance and high temperature resistance, the flexibility of cable is greatly improved, while also reducing
The size of cable.
Description of the drawings
Fig. 1 is the heat safe super soft coaxial radio frequency cable schematic cross-section of the utility model.
Wherein：10, inner wire, 21, expanded microporous polytetra fluoroethylene-EPTEE film covered insulating layer, 22, polytetrafluoroethylraw raw material band around
Packet insulating layer, 30, outer conductor, 40, shielded layer, 50, restrictive coating.
Specific implementation mode
In order to deepen the understanding to the utility model, the utility model is made below in conjunction with embodiment and attached drawing further
It is described in detail, which is only used for explaining the utility model, does not constitute the restriction to the scope of protection of the utility model.
As shown in Figure 1, the heat safe super soft coaxial radio frequency cable of one kind of the utility model, the coaxial radio frequency cable from
Interior arrive outer includes inner wire 10, insulating layer, outer conductor 30, shielded layer 40 and restrictive coating 50 successively.
Inner wire 10 is single silver-plated circular copper wire, or more are twisted silver-plated circular copper wire（In Fig. 1, inner wire 10 is
More are twisted silver-plated circular copper wire）, silver-plated copper conductor temperature resistant grade can reach 200 DEG C, moreover, relatively other metal material silver
Conductivity higher, silver-plated conductor can reduce cable attenuation component caused by inner wire, and comparatively, single silver-coated copper wire is made
For inner wire when cable attenuation it is lower, cable is more soft when silver-plated copper stranded wire is as inner wire, can carry out according to actual needs
Selection.Conductor structure size is calculated according to cable resistance, the effective dielectric constant of insulating layer, outer insulation diameter etc..
Inner wire 10 is coated with insulating layer, and insulating layer is expanded microporous polytetra fluoroethylene-EPTEE film covered insulating layer 21 from inside to outside
With polytetrafluoroethylraw raw material band wrapping insulation layer 22, temperature resistant grade can reach 150 DEG C.Wrapping insulation layer internal layer, using machine
The lower expanded microporous polytetra fluoroethylene-EPTEE film of tool intensity, but its dielectric constant is excellent, only 1.3 or so；Lapped insulation outermost layer, is adopted
With the slightly higher polytetrafluoroethylraw raw material band of mechanical strength, dielectric constant is 2.0~2.1.Expanded microporous polytetra fluoroethylene-EPTEE Transposed wind
Accounting of the insulating layer 21 in the total volume that insulate is bigger, and the effective dielectric constant of insulating layer is smaller, and cable attenuation is smaller, this knot
The effective dielectric constant of structure insulating layer can generally reach 1.5~1.7.The opposite insulating layer for squeezing out structure, this lapping structure
The flexibility of insulating layer is more excellent.
Insulating layer is coated with outer conductor 30, and outer conductor 30 coats plating silverskin, silver-plated film thickness using in insulating layer outer surface
Degree is not less than 2 μm.Due to the Kelvin effect under high frequency, signal is propagated in high-frequency transmission in the silver layer of electric wire outer surface, is applied
The high conductivity for the tubular outer conductor and silver coating that the silver coating covered forms 100% covering reduces cable caused by outer conductor
Attenuation components reduce cable loss.Other opposite outer conductor structures, the thickness of insulated outer surface silver coating outer conductor obviously drop
Low, so as to greatly reduce the size and weight of cable, and this outer conductor and insulating layer are closely linked, also not
It can influence the flexibility of cable.
Outer conductor 30 is coated with shielded layer 40, and shielded layer 40 uses silver plated fiber braiding structure, further improves screen
Effect is covered, cable dimension is bigger, and braiding layer thickness is bigger, and braiding layer thickness is generally 0.08~0.30mm.The base of silver plated fiber
Material fiber uses high-temperature fibre, its temperature resistant grade is allow to reach 200 DEG C.Relatively silver-plated circular copper wire, silver plated fiber are thinner more
Softness, therefore, the thickness of silver plated fiber braiding layer can be less than silver-coated copper wire braiding layer, and the cable woven using silver plated fiber is more soft
It is soft, moreover, the mesh grid that silver plated fiber is knitted to form, net gap smaller, percentage of braiding coverage higher, shield effectiveness are more preferable.Due to
The density of silver plated fiber is less than copper wire, therefore the thickness of silver plated fiber braiding layer is adopted again smaller than the thickness of silver-coated copper wire braiding layer
The cable weight woven with silver plated fiber is lighter.
Shielded layer 40 is coated with restrictive coating 50, and restrictive coating 50 is using the perfluoroethylene-propylene of solid extrusion, heatproof etc.
Grade can reach 200 DEG C, and jacket thickness is 0.15mm~0.30mm.
The coaxial radio frequency cable of the utility model includes inner wire 10, insulating layer, outer conductor 30, screen successively from inside to outside
Layer 40 and restrictive coating 50 are covered, insulating layer is that expanded microporous polytetra fluoroethylene-EPTEE film covered insulating layer 21 and polytetrafluoroethylene (PTFE) are given birth to from inside to outside
Material strip wrapping insulation layer 22 promotes the soft of cable while reducing insulating layer effective dielectric constant, reducing cable dielectric loss
It is soft；Outer conductor 30 is the silver coating coated in insulating layer outer surface, and silver coating forms tubular structure and the plating of 100% covering
The high conductivity of silver layer reduces cable attenuation component caused by outer conductor.It is this to lead outside with respect to silver-coated copper wire braided outer conductor
The signal transmission performance of body is more preferable, moreover, the thickness of plating silver coating is much smaller than the thickness of silver-coated copper wire braiding layer, greatly reduces
The flexibility of the size and weight of cable, cable is also promoted；Increase shielded layer 40 outside outer conductor 30（Silver plated fiber weaves
Layer）, opposite silver-coated copper wire braiding layer, braiding layer is thinner, and more preferably, and the flexibility of fiber is substantially better than copper to shield effectiveness
Line, density is again smaller than copper wire, and therefore, cable using silver plated fiber braiding layer as shielded layer is more soft, weight is lighter.
This cable greatly improves the flexibility of cable while ensureing wired signal transmission performance and high temperature resistance,
Also reduce the size of cable simultaneously.
Claims (4)
1. a kind of heat safe super soft coaxial radio frequency cable, it is characterised in that：The coaxial radio frequency cable wraps successively from inside to outside
Include inner wire（10）, insulating layer, outer conductor（30）, shielded layer（40）And restrictive coating（50）, the insulating layer is micro- from inside to outside
Hole polytetrafluoroethylene film wrapping insulation layer（21）With polytetrafluoroethylraw raw material band wrapping insulation layer（22）, the inner wire（10）
It is twisted silver-plated circular copper wire, the outer conductor for single or more（30）For the plating silverskin of insulating layer outer surface coating, the shielding
Layer（40）It is made of silver plated fiber braiding, the restrictive coating（50）For the solid perfluoroethylene-propylene of extrusion.
2. the heat safe super soft coaxial radio frequency cable of one kind according to claim 1, it is characterised in that：The insulating layer
Effective dielectric constant be 1.5~1.7.
3. the heat safe super soft coaxial radio frequency cable of one kind according to claim 1, it is characterised in that：The outer conductor
（30）For the plating silverskin coated in insulating layer outer surface, plating silver film thickness is not less than 2 μm.
4. the heat safe super soft coaxial radio frequency cable of one kind according to claim 1, it is characterised in that：The shielded layer
（40）For silver plated fiber braiding layer, braiding layer thickness is 0.08~0.30mm, and the substrate fiber of silver plated fiber is fine using high temperature resistant
Dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381002.5U CN207637969U (en) | 2017-10-25 | 2017-10-25 | A kind of heat safe super soft coaxial radio frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381002.5U CN207637969U (en) | 2017-10-25 | 2017-10-25 | A kind of heat safe super soft coaxial radio frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207637969U true CN207637969U (en) | 2018-07-20 |
Family
ID=62858489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721381002.5U Active CN207637969U (en) | 2017-10-25 | 2017-10-25 | A kind of heat safe super soft coaxial radio frequency cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN207637969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822956A (en) * | 2022-04-18 | 2022-07-29 | 陕西华达线缆技术有限责任公司 | Ultra-high temperature flexible low-loss radio frequency coaxial cable for missile loading |
| CN116206805A (en) * | 2023-03-07 | 2023-06-02 | 江苏通光电子线缆股份有限公司 | Aviation cable and preparation method thereof |
-
2017
- 2017-10-25 CN CN201721381002.5U patent/CN207637969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114822956A (en) * | 2022-04-18 | 2022-07-29 | 陕西华达线缆技术有限责任公司 | Ultra-high temperature flexible low-loss radio frequency coaxial cable for missile loading |
| CN116206805A (en) * | 2023-03-07 | 2023-06-02 | 江苏通光电子线缆股份有限公司 | Aviation cable and preparation method thereof |
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