CN109524752A - A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable - Google Patents
A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable Download PDFInfo
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- CN109524752A CN109524752A CN201910027490.7A CN201910027490A CN109524752A CN 109524752 A CN109524752 A CN 109524752A CN 201910027490 A CN201910027490 A CN 201910027490A CN 109524752 A CN109524752 A CN 109524752A
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- insulating layer
- helicitic texture
- coaxial cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/06—Coaxial lines
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Abstract
The invention discloses a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable, structure successively includes inner conductor, insulating layer, separating film layer, outer conductor and oversheath from the inside to the outside；The inner conductor and outer conductor are arranged coaxially, helicitic texture is formed on the outside of the insulating layer, the separating film layer is metallic diaphragm or insulating film layer or metal-insulator composite film, the separating film layer is coated on the surface of the insulating layer, and the separating film layer is in and plays buffer action between the insulating layer and outer conductor and be easy to the outer conductor and the insulation displacement.The beneficial effects of the present invention are: proposing scheme that is novel, being different from the prior art, using exclusive helicitic texture insulating layer, effectively reduce the relative dielectric constant of coaxial cable insulated layer and the transmission loss of coaxial cable, simultaneously, reduce dielectric substance usage amount, reduce costs, alleviates weight, simple production process is suitable for popularization and application.
Description
Technical field
The present invention relates to radio frequency coaxial-cable structure, specially a kind of helicitic texture insulating layer low-loss semi-flexible RF coaxial
The construction of cable.
Background technique
Radio frequency coaxial-cable is one of the form of electromagnetic wave signal transmission line, is worked in the transmission of ultrashort wave to microwave frequency band
Line is mainly based on radio frequency coaxial-cable.Conventional radio frequency coaxial-cable is by between inner conductor, outer conductor, internal and external conductor
Insulating layer and oversheath composition.Most typical structure is: inner conductor is cylindrical conductor, and outer conductor is tubular conductor, the two
Be arranged coaxially, between be insulating layer.The outer diameter of inner conductor, the internal diameter of outer conductor, insulating layer relative dielectric constant determine
Material, the manufacture work of the electricity function indexs such as the characteristic impedance of radio frequency coaxial-cable and transmission loss, internal and external conductor and insulating layer
Skill etc. determines the mechanical performance and cost of radio frequency coaxial-cable.
With the rapid development of mobile communication technology, from analog to digital, from 2G to 4G, then to all things on earth interconnection 5G when
Generation, mobile interchange have penetrated into the every nook and cranny of people's daily life.Radio frequency coaxial-cable is as fields such as communication, national defence
Important foundation component is the important component of all kinds of radio communication equipments and antenna, feeder line, is obtained extensive, big
The application of scale.Electric property, mechanical performance, the manufacturing cost of radio frequency coaxial-cable be directly related to whole set equipment it is electrical,
Mechanical performance and cost.
Currently, in practical applications solid core polytetrafluoroethylene PTFE make insulating layer Semi-flexible radio-frequency coaxial cable it is very general
Time, in particular for the coaxial cable of all kinds of array antenna feeding networks.This professional domain is known, the transmission loss of coaxial cable
The feeder loss using coaxial cable feed network array antenna is directly affected, as the complexity of antenna feeding network is more next
Higher, especially upcoming 5G mobile communications network working frequency range constantly increases, the feeder loss problem of 5G antenna for base station
It becomes increasingly conspicuous, the loss for further decreasing feeding network is extremely urgent.Relative to solid core polytetrafluoroethylene PTFE insulating layer, although
Expanded polytetrafluoroethyl(ne PTFE, lotus root core polytetrafluoroethylene PTFE insulating layer etc. occurred reduces the technical side of relative dielectric constant
Case, but because of many reasons such as cost, technique etc., have no extensive use.
Summary of the invention
In order to overcome the shortcomings of solid core polytetrafluoroethylene PTFE insulating layer radio frequency coaxial-cable, the present invention provides a kind of screw thread
Structure insulating layer low-loss semi-flexible radio-frequency coaxial cable, effectively reduce RF coaxial cable insulation cable layer relative dielectric constant,
Simple process, it is at low cost, be suitable for popularization and application.
The technical solution adopted by the present invention to solve the technical problems is: a kind of helicitic texture insulating layer low-loss semi-flexible is penetrated
High frequency coaxial cable successively includes inner conductor, insulating layer, separating film layer, outer conductor and oversheath from the inside to the outside；The inner conductor and
Outer conductor is arranged coaxially；Helicitic texture is formed on the outside of the insulating layer, the separating film layer is metallic diaphragm or insulation
Film layer or metal-insulator composite film, the separating film layer are coated on the surface of the insulating layer, and the separating film layer is in institute
It states and plays buffer action between insulating layer and outer conductor and be easy to the outer conductor and the insulation displacement.
Further, the insulating layer uses low relative dielectric constant dielectric, as a preferred embodiment of the above technical solution, institute
Insulating layer is stated to be made of low relative dielectric constant, fluoroplastics resistant to high temperature, such as: PTFE, FEP, PFA etc., the insulating layer
Outer diameter D be 1.0~50.0mm.
Further, when the separating film layer is metallic diaphragm, the metallic diaphragm uses aluminium alloy or copper alloy thin films；
When the separating film layer is insulating film layer, the insulating film layer uses low relative dielectric constant, fluorine plastic film resistant to high temperature.
Further, the cross sectional shape of the helicitic texture is rectangular teeth, stepped tooth, round-arced tooth or lance tooth, institute
The lift angle for stating helicitic texture is 0~90 °, screw pitch is 0~10Dmm, and D is the outer diameter of the insulating layer.
Further, the separating film layer is single or double layer structure, is coated on institute using wrapped or longitudinal wrap manufacture craft
State the surface of insulating layer, the thickness < 1.0mm of the separating film layer.
Further, the metallic diaphragm uses aluminium alloy or copper alloy thin films.
Further, the insulating film layer uses low relative dielectric constant, fluorine plastic film resistant to high temperature, such as: PTFE,
FEP, PFA etc..
Further, the metal-insulator composite film, by one layer of metallic diaphragm and one layer of insulating film layer structure
At.
Further, the inner conductor uses sub-thread or stranded conductor structure, and the diameter of the inner conductor is 0.2~
10.0mm.The conducting wire can be copper conductor or copper-clad aluminum alloy conducting wire.The conductive line surfaces are gold-plated, silver-plated, tin plating or plate it
It is conducive to improve the material of conductivity and welding performance.
Further, the outer conductor uses copper braiding net sleeve wicking structure.
Further, the oversheath is made of fluoroplastics, has good high temperature resistant and weather resistance.
The invention belongs to be widely used in all kinds of civilian, military communication system active and inactive components, especially all kinds of battle arrays
The high temperature resistant Semi-flexible radio-frequency coaxial cable of array antenna feeding network.
Compared with prior art, the beneficial effects of the present invention are: proposing scheme that is novel, being different from the prior art,
Using exclusive helicitic texture insulating layer, relative dielectric constant and the radio frequency for effectively reducing RF coaxial cable insulation cable layer are same
The transmission loss of shaft cable, meanwhile, reduce dielectric substance usage amount, reduce costs, alleviates weight, production technology letter
It is single, it is suitable for popularization and application.
Detailed description of the invention
Fig. 1 is structural plan schematic diagram of the invention；
Fig. 2 is structural upright schematic diagram of the invention；
Fig. 3 is the tooth form schematic diagram one of the screw thread of screw thread insulating layer of the invention；
Fig. 4 is the tooth form schematic diagram two of the screw thread of screw thread insulating layer of the invention；
Fig. 5 is the tooth form schematic diagram three of the screw thread of screw thread insulating layer of the invention；
Fig. 6 is the tooth form schematic diagram four of the screw thread of screw thread insulating layer of the invention.
Specific embodiment
The present invention is further detailed with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable, from the inside to the outside successively
Including inner conductor 1, insulating layer 2, separating film layer 3, outer conductor 4 and oversheath 5, the inner conductor 1 and outer conductor 4 are in coaxially to set
It sets, for the insulating layer 2 between the inner conductor 1 and separating film layer 3, the outside of the insulating layer 2 is formed with helicitic texture,
The separating film layer 3 is metallic diaphragm or insulating film layer or metal-insulator composite film, and the separating film layer 3 is coated on described
The surface of insulating layer 2, the separating film layer 3, which is in, to be played buffer action and makes described between the insulating layer 2 and outer conductor 4
Outer conductor 4 is easy to remove with the insulating layer 2, and the oversheath 5 is coated on 4 outer side wall surface of outer conductor.
Since air has extremely low relative dielectric constant, so air is added in the dielectric can be greatly reduced relatively
Dielectric constant, the present invention are different from method used in the low relative dielectric constant dielectric of existing production and (such as use high molecular polymer
The air bubble etc. of nanoscale is added as substrate), by carrying out Cutting Process forming on traditional insulating layer or directly adopting
There is the insulating layer of thread shape with thermoplastic molding process production outside, then coats one layer or the double-deck institute on 2 surface of insulating layer
Separating film layer 3 is stated, the separating film layer 3, which is in, to be played buffer action and make described outer between the insulating layer 2 and outer conductor 4
Conductor 4 is easy to remove with the insulating layer 2, reaches the relative dielectric constant for reducing coaxial cable insulated layer and reduces coaxial cable
Transmission loss purpose.
Further, the insulating layer 2 uses low relative dielectric constant dielectric.Preferably, the insulating layer 2 is using low
Relative dielectric constant, fluoroplastics resistant to high temperature, such as may is that PTFE, FEP or PFA etc..The outer diameter D of the insulating layer 2 is
1.0~50.0mm, it is preferred that the outer diameter D of the insulating layer 2 is 3.3mm.
Further, when the separating film layer 3 is metallic diaphragm, the metallic diaphragm is thin using aluminium alloy or copper alloy
Film；When the separating film layer 3 is insulating film layer, the insulating film layer 3 is thin using low relative dielectric constant, fluoroplastics resistant to high temperature
Film；When the separating film layer 3 is metal-insulator composite film, by one layer of metallic diaphragm and one layer of insulating film layer structure
At.
Further, the cross sectional shape of the helicitic texture is rectangular teeth (shown in Fig. 3), stepped tooth (shown in Fig. 4), circular arc
Shape tooth (shown in Fig. 5) or lance tooth (shown in Fig. 6).Preferably, the cross sectional shape of helicitic texture is rectangular teeth.The screw thread knot
The lift angle of structure is 0~90 °, screw pitch is 0~10Dmm, and D is the outer diameter of the insulating layer 2.Preferably, the spiral shell of the helicitic texture
Away from for 1.7mm.
Further, the separating film layer 3 is single-layer metal film layer.Preferably, the metallic diaphragm is aluminium foil, with a thickness of
0.15mm is coated on the surface of the insulating layer 2 using wrapped or longitudinal wrap manufacture craft.
Further, the diameter of the inner conductor 1 is 0.2~10.0mm.Preferably, the inner conductor 1 uses diameter 1mm
The sub-thread copper conductor or copper-clad aluminum alloy conducting wire of left and right, the copper conductor or copper-clad aluminum alloy conductive line surfaces are tin plating.
Further, the outer conductor 4 is using copper braiding net sleeve and wicking.
Further, the oversheath 5 uses fluoroplastics or other plastics with certain heat resistance and flame retardant property
It is made.Preferably, the oversheath 5 with a thickness of 0.6mm or so.
For the present invention by above-mentioned preferred technical solution, reference examples are that the soft radio frequency of widely applied same type half is same in reality
Shaft cable RG141 (American Standard), the present embodiment can get 20~30% improvement in transmission loss performance.
As described above, only presently preferred embodiments of the present invention, when cannot be limited the scope of implementation of the present invention with this,
All still belong to this hair according to simple equivalent changes and modifications made by scope of the present invention patent and invention description content generally
In the range of bright patent covers.
Claims (10)
1. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable, successively include from the inside to the outside inner conductor, insulating layer,
Separating film layer, outer conductor and oversheath；It is characterized in that, the inner conductor and outer conductor are arranged coaxially, the insulating layer
Outside is formed with helicitic texture, and the separating film layer is metallic diaphragm or insulating film layer or metal-insulator composite film, it is described every
It is in from film layer and plays buffer action between the insulating layer and outer conductor and be easy to the outer conductor and the insulating layer
Removing.
2. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
The insulating layer uses low relative dielectric constant, fluoroplastics resistant to high temperature, and the outer diameter D of the insulating layer is 1.0~50.0mm.
3. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
The cross sectional shape of the helicitic texture is rectangular teeth, stepped tooth, round-arced tooth or lance tooth.
4. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 3, which is characterized in that
The lift angle of the helicitic texture is 0~90 °, screw pitch is 0~10Dmm, and D is the outer diameter of the insulating layer.
5. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
The separating film layer is single or double layer, and the outer surface of the insulating layer is coated on using wrapped or longitudinal wrap manufacture craft, described
The thickness < 1.0mm of separating film layer.
6. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
When the separating film layer is metallic diaphragm, the metallic diaphragm uses aluminium alloy or copper alloy thin films；The separating film layer is exhausted
When velum layer, the insulating film layer uses low relative dielectric constant, fluorine plastic film resistant to high temperature；The separating film layer is gold
When category-insulated compound film layer, it is made of one layer of metallic diaphragm and one layer of insulating film layer.
7. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
The inner conductor is sub-thread or stranded conductor structure, and the diameter of the inner conductor is 0.2~10.0mm.
8. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 7, which is characterized in that
The conducting wire be copper conductor or copper-clad aluminum alloy conducting wire, surface gold-plating, it is silver-plated, tin plating or plating it is other be conducive to improve conductivity
With the material of welding performance.
9. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, which is characterized in that
The outer conductor is copper braiding net sleeve wicking structure.
10. a kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable according to claim 1, feature exist
In the oversheath is made of fluoroplastics.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027490.7A CN109524752A (en) | 2019-01-11 | 2019-01-11 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027490.7A CN109524752A (en) | 2019-01-11 | 2019-01-11 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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| CN109524752A true CN109524752A (en) | 2019-03-26 |
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| CN201910027490.7A Pending CN109524752A (en) | 2019-01-11 | 2019-01-11 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459364A (en) * | 2019-07-04 | 2019-11-15 | 翁清勇 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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|---|---|---|---|---|
| US20090283296A1 (en) * | 2005-12-28 | 2009-11-19 | Junkosha Inc. | coaxial cable |
| CN202221806U (en) * | 2011-08-31 | 2012-05-16 | 杭州宏森电缆有限公司 | Low-loss spiral support radio-frequency coaxial cable |
| CN103579728A (en) * | 2012-08-02 | 2014-02-12 | 深圳金信诺高新技术股份有限公司 | Semi-flexible radio-frequency coaxial cable |
| CN204632443U (en) * | 2015-06-02 | 2015-09-09 | 珠海汉胜科技股份有限公司 | A kind of coaxial cable |
| CN105655677A (en) * | 2016-03-17 | 2016-06-08 | 浙江德通科技有限公司 | Superflexible aluminum outer conductor radio frequency coaxial cable |
| WO2018040637A1 (en) * | 2016-08-31 | 2018-03-08 | 中天射频电缆有限公司 | Leaky coaxial cable and manufacturing method thereof |
| CN209658375U (en) * | 2019-01-11 | 2019-11-19 | 广州天移通信科技发展有限公司 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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2019
- 2019-01-11 CN CN201910027490.7A patent/CN109524752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090283296A1 (en) * | 2005-12-28 | 2009-11-19 | Junkosha Inc. | coaxial cable |
| CN202221806U (en) * | 2011-08-31 | 2012-05-16 | 杭州宏森电缆有限公司 | Low-loss spiral support radio-frequency coaxial cable |
| CN103579728A (en) * | 2012-08-02 | 2014-02-12 | 深圳金信诺高新技术股份有限公司 | Semi-flexible radio-frequency coaxial cable |
| CN204632443U (en) * | 2015-06-02 | 2015-09-09 | 珠海汉胜科技股份有限公司 | A kind of coaxial cable |
| CN105655677A (en) * | 2016-03-17 | 2016-06-08 | 浙江德通科技有限公司 | Superflexible aluminum outer conductor radio frequency coaxial cable |
| WO2018040637A1 (en) * | 2016-08-31 | 2018-03-08 | 中天射频电缆有限公司 | Leaky coaxial cable and manufacturing method thereof |
| CN209658375U (en) * | 2019-01-11 | 2019-11-19 | 广州天移通信科技发展有限公司 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459364A (en) * | 2019-07-04 | 2019-11-15 | 翁清勇 | A kind of helicitic texture insulating layer low-loss semi-flexible radio-frequency coaxial cable |
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