CN201508895U - Small low-loss double-shield coaxial radio-frequency skin-foam-skin cable - Google Patents
Small low-loss double-shield coaxial radio-frequency skin-foam-skin cable Download PDFInfo
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- CN201508895U CN201508895U CN2009201976595U CN200920197659U CN201508895U CN 201508895 U CN201508895 U CN 201508895U CN 2009201976595 U CN2009201976595 U CN 2009201976595U CN 200920197659 U CN200920197659 U CN 200920197659U CN 201508895 U CN201508895 U CN 201508895U
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Abstract
The utility model relates to a coaxial cable, which has the advantages of good electrical performance, high mechanical strength and long service life. In the technical scheme, the small low-loss double-shield coaxial radio-frequency skin-foam-skin cable comprises a conductor, an insulating layer, a shielding layer and a sheath, wherein the insulating layer, the shielding layer and the sheath are coaxially coated outside the conductor from the outside to the inside. The small low-loss double-shield coaxial radio-frequency skin-foam-skin cable is characterized in that the insulating layer consists of a foaming layer outside the conductor and a coating layer outside the foaming layer. An inner crust layer is also arranged between the conductor and the insulating layer, and the coating layer is 0.05 to 0.2mm thick and is a PE film.
Description
Technical field
The utility model relates to a kind of coaxial cable, especially the special cable of conveying electronic signal flow; Be mainly used in major fields such as mobile communication system, satellite communication.
Background technology
In the existing coaxial cable, external diameter all is called little cable less than 3mm's; Little cable is used for the communications field usually.The insulating barrier that the conductor outside of conventional coaxial little cable is coated adopts plastic foam material more.Adopt plastic foam material to significantly reduce the effective dielectric constant and the dielectric loss angle tangent of insulating barrier as insulating barrier, therefore under the condition that keeps same wave impedance, if constant its insulating barrier external diameter of inner wire can be done forr a short time, and decay can reduce greatly.Particularly under the condition of high frequency, the effect that reduces decay is more obvious.Therefore insulating barrier adopts the coaxial cable of plastic foam material to have advantages such as in light weight, low decay, high-power, broadband.
After yet the insulating barrier of coaxial cable adopted plastic foam material, existing shortcoming was that proof voltage is lower, and mechanical strength is poor than the solid plastic material; Application to cable affects.
The utility model content
The purpose of this utility model is the deficiency that overcomes the above-mentioned background technology, and a kind of improvement of small bore coaxial cable radio frequency cable is provided; This cable should have the characteristics of good electrical property, mechanical strength height and long service life.
The technical solution adopted in the utility model is: skin foam skin low-loss double shield small bore coaxial cable radio frequency cable comprises conductor and conductor the outside insulating barrier of coaxial coating, screen and sheath successively from inside to outside; It is characterized in that described insulating barrier is made up of the foaming layer of conductor outside and the coating layer of foaming layer outside.
Skinning in one deck also is set between described conductor and the insulating barrier.
The thickness of described coating layer is 0.05-0.2mm.
Described coating layer is the PE film.
The beneficial effects of the utility model are: since the foaming insulation layer outer setting one deck PE film as coating layer, can effectively improve moistureproof damp proof effect, the structure of insulating barrier is stablized, and then under keeping, obviously improve cable withstand voltage properties and mechanical strength than the prerequisite of high electrical performance, prolong cable useful life; In addition, skinning in one deck that conductive surface is provided with can significantly strengthen the bonding dynamics of conductor and insulating barrier, has further improved the quality of product.
Description of drawings
Fig. 1 is a cross section structure for amplifying schematic diagram of the present utility model.
Embodiment
Skin foam skin low-loss double shield small bore coaxial cable radio frequency cable comprises conductor 5 and conductor the outside insulating barrier of coaxial coating, screen 3, screen 2, and sheath 1 successively from inside to outside; Usually also be provided with separator (generally adopting polyethylene) between screen 3 and the screen 2, screen is conventional woven wire cloth.
Insulating barrier in the utility model is formed by the foaming layer 7 of conductor outside and at the coating layer 4 of foaming layer outside.Described coating layer recommends to adopt the PE film; The thickness of coating layer is recommended as 0.05-0.2mm.The thickness of foaming layer 7 is then selected according to the requirement of different cables.
Foaming layer 7 in the described insulating barrier and coating layer 4 can adopt the double-layer coextrusion expressing technique to make usually.Adopt double-deck extrusion way simultaneously, can avoid owing to extrude the foaming layer surface of inside when separately carrying out for twice and polluted and damage, (or two kinds of color material) are combined closely, guarantee double-insulated concentricity, improve the quality of products.
Skinning 6 in one deck also is set between described conductor and the insulating barrier; Should recommend to adopt polyethylene from high pressure processes (LDPE) by interior skinning 6.Usually carry out before foaming layer extrudes at conductor, the LDPE that elder generation's extrusion molding one deck is very thin (because the ratio of viscosities of LDPE is bigger) material is as interior skinning, its thickness and concentricity are very big to the performance impact of final products, and the thickness of interior skinning as far as possible thin (thickness generally is controlled at about 0.05mm).
Claims (4)
1. skin foam skin low-loss double shield small bore coaxial cable radio frequency cable comprises conductor (5) and conductor the outside insulating barrier of coaxial coating, screen (3), screen (2) and sheath (1) successively from inside to outside; It is characterized in that described insulating barrier is made up of the foaming layer (7) of conductor outside and the coating layer (4) of foaming layer outside.
2. skin foam skin low-loss double shield small bore coaxial cable radio frequency cable according to claim 1 is characterized in that also being provided with between described conductor (5) and the insulating barrier skinning (6) in one deck.
3. skin foam skin low-loss double shield small bore coaxial cable radio frequency cable according to claim 1 and 2, the thickness that it is characterized in that described coating layer (4) is 0.05-0.2mm.
4. skin foam skin low-loss double shield small bore coaxial cable radio frequency cable according to claim 3 is characterized in that described coating layer (4) is the PE film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201976595U CN201508895U (en) | 2009-09-28 | 2009-09-28 | Small low-loss double-shield coaxial radio-frequency skin-foam-skin cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201976595U CN201508895U (en) | 2009-09-28 | 2009-09-28 | Small low-loss double-shield coaxial radio-frequency skin-foam-skin cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508895U true CN201508895U (en) | 2010-06-16 |
Family
ID=42470019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201976595U Expired - Fee Related CN201508895U (en) | 2009-09-28 | 2009-09-28 | Small low-loss double-shield coaxial radio-frequency skin-foam-skin cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201508895U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103915187A (en) * | 2014-03-10 | 2014-07-09 | 安徽省高沟电缆有限公司 | Low-smoke and halogen-free waterproof compensation coaxial cable resistant to drag |
| CN103943174A (en) * | 2014-03-18 | 2014-07-23 | 安徽慧艺线缆集团有限公司 | Dragging-prevention waterproof three-core pair-twist shield cable |
| CN108538488A (en) * | 2017-03-03 | 2018-09-14 | 日立金属株式会社 | Coaxial cable and cable with braid shielded |
-
2009
- 2009-09-28 CN CN2009201976595U patent/CN201508895U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103915187A (en) * | 2014-03-10 | 2014-07-09 | 安徽省高沟电缆有限公司 | Low-smoke and halogen-free waterproof compensation coaxial cable resistant to drag |
| CN103943174A (en) * | 2014-03-18 | 2014-07-23 | 安徽慧艺线缆集团有限公司 | Dragging-prevention waterproof three-core pair-twist shield cable |
| CN108538488A (en) * | 2017-03-03 | 2018-09-14 | 日立金属株式会社 | Coaxial cable and cable with braid shielded |
| CN108538488B (en) * | 2017-03-03 | 2020-05-08 | 日立金属株式会社 | Coaxial cable and cable with braided shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |