CN102903989A - Polyethylene insulated flexible radio-frequency cable - Google Patents
Polyethylene insulated flexible radio-frequency cable Download PDFInfo
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- CN102903989A CN102903989A CN 201210419819 CN201210419819A CN102903989A CN 102903989 A CN102903989 A CN 102903989A CN 201210419819 CN201210419819 CN 201210419819 CN 201210419819 A CN201210419819 A CN 201210419819A CN 102903989 A CN102903989 A CN 102903989A
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- silver
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- insulating layer
- outer conductor
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Abstract
The invention relates to a polyethylene insulated flexible radio-frequency cable, belonging to the technical field of cables. The polyethylene insulated flexible radio-frequency cable is composed of an inner conductor, an insulating layer, an outer conductor and a sheath in sequence from inside to outside, wherein the inner conductor is made of 27 silver-plated copper stranded bundles each of which the diameter is 0.127mm; the insulating layer is a skin-foam-skin insulating layer which is foamed by adopting a physical foaming technology, wherein the outer diameter of the insulating layer is 2.4mm; the outer conductor is a silver plated flat wire or silver plated single-wire braided shielding layer; a polyethylene insulating layer is extruded on the inner conductor made of the silver-plated copper stranded bundles; the outer conductor, namely the silver plated flat wire or silver plated single-wire braided shielding layer, is braided on the polyethylene insulating layer; and the polyethylene sheath is extruded on the outer conductor, wherein the diameter of the sheath is 4.1mm. The polyethylene insulated flexible radio-frequency cable disclosed by the invention is reasonable in structure, ensures the electrical performance of the cable, improves the strength of the insulating layer and has the function of preventing water and moisture from intruding into the intermediate foaming layer. The fluctuation of a capacitor is controlled in a tiny tolerance range, the voltage standing wave rate is low, so that the impedance of an exchange network is more matched and the high-quality transmission of high-frequency signals is achieved.
Description
Technical field
The present invention relates to a kind of cable, especially for the structure of the transmission of data analog signal in the hybrid fiber coaxial network with radio frequency cable, belong to the cable technology field.
Background technology
Radio frequency cable is the cable of electromagnetic energy in the transmission radio-frequency region, radio frequency cable is indispensable element in range radio communication system and the electronic equipment, uses widely at aspects such as radio communication and broadcasting, TV, radar, navigation, computer and instrument.Wherein most widely used is coaxial cable, mainly as the machine intraconnections of the feeder of radio transmission or receiving equipment and various communication, electronic equipment or interconnect line.Existing coaxial radio frequency cable, its basic structure from inside to outside is made of coaxial inner wire, insulating barrier, braid, outer conductor and restrictive coating successively.Although the progress of modern cables manufacturing technology has improved the antijamming capability of cable greatly, adapted to the transmission demand of high-speed data communication and LAN (Local Area Network).But modern coaxial radio frequency cable, foam degrees is increasing, and foamed insulation adopts blown with carbon dioxide, and the foamed insulation solid material reduces, strength decreased, insulator is easily impaired, thereby transmission quality and efficient are lower, and loss is large, shielding and anti-interference are poor, especially the telecommunication cable electrical property is subject to the shortcomings such as natural environment and climate condition influence, makes its scope of application enjoy restriction, can not use at high-frequency range.Along with the development of national defence weapon equipment and microwave communication, and the demand of civilian intelligent microwave instrument, telecommunication transmission is more and more higher to the requirement of radio frequency cable attenuation and voltage standing wave ratio.Therefore, in the urgent need to developing a kind of saving material, reduce construction of cable size, the coaxial radio frequency cable that production cost is low and transmission performance is higher.
Summary of the invention
Purpose of the present invention is exactly for the deficiencies in the prior art, is the demand of satisfying the market, and a kind of polyethylene insulation soft radio-frequency cable is provided.
The object of the present invention is achieved like this, the polyethylene insulation soft radio-frequency cable, comprise the inner wire that from inside to outside sets gradually, insulating barrier, outer conductor and sheath, it is characterized in that, described inner wire is 27 diameters, 0.127 ㎜ silver-plated copper twisted bundles, described insulating barrier is polyethylene layer, the insulating barrier external diameter is 2.4 ㎜, described outer conductor is silver-plated lenticular wire and silver-plated single line woven shield, extrude polyethylene layer on the silver-plated copper twisted bundles inner wire, the silver-plated lenticular wire of braiding and silver-plated single line woven shield outer conductor extrude pe sheath, sheath diameter 4.1 ㎜ on the polyethylene layer on the outer conductor.
Skin-bubble that described insulating barrier foams for the employing physical foaming technology-Pi insulating barrier.
The present invention is rational in infrastructure, adopts the shielding construction of skin-foam-skin insulation and silver-plated lenticular wire and silver-plated single line woven shield outer conductor, stable mechanical performance, and long service life, waterproof and dampproof, good bending property.Insulation layer structure adopts " endodermis one foaming layer one exodermis " three-decker, and endodermis adopts the viscosity low density polyethylene (LDPE), guarantees that its thickness general control of electric property of cable is following.Exodermis adopts high density polyethylene (HDPE), improves the intensity of insulating barrier and the function that waterproof, moistureproof gas cut enter middle foaming layer.The fluctuation of electric capacity all is controlled within the minimum margin of tolerance, the impedance of finished cable is more even, and voltage standing wave ratio is less, thereby has solved the problem of insurmountable reduction standing-wave ratio in the industry, the impedance of switching network is more mated, realize the high-quality transmission of high-frequency signal.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1 inner wire, 2 insulating barriers, 3 outer conductors, 4 sheaths.
Embodiment
The polyethylene insulation soft radio-frequency cable, by the inner wire that from inside to outside sets gradually, insulating barrier, outer conductor and sheath consist of, inner wire is 27 diameters, 0.127 ㎜ silver-plated copper twisted bundles, skin-bubble that insulating barrier foams for the employing physical foaming technology-Pi insulating barrier, the insulating barrier external diameter is 2.4 ㎜, described outer conductor is silver-plated lenticular wire and silver-plated single line woven shield, extrude polyethylene layer on the silver-plated copper twisted bundles inner wire, the silver-plated lenticular wire of braiding and silver-plated single line woven shield outer conductor on the polyethylene layer, extrude pe sheath on the outer conductor, sheath diameter 4.1 ㎜.
In order effectively to improve the improvement that cable performance need to be paid close attention to the dielectric performance more, insulation layer structure adopts " endodermis one foaming layer one exodermis " three-decker, and wherein endodermis is mainly used to the useful life of adhesion foaming layer and inner wire raising cable core.Therefore endodermis adopt the viscosity low density polyethylene (LDPE) and for its thickness general control of electric property of guaranteeing cable following.The effect of exodermis is to improve the intensity of insulating barrier and function so exodermis that waterproof, moistureproof gas cut enter middle foaming layer adopt high density or medium density polyethylene.The advanced physical blowing technique of foaming layer employing makes it have the abscess that is evenly distributed in a large number and isolates each other abundant mixing of polyethylene material that the gas high pressure injects molten condition.Cable has good electric property and moisture seal performance simultaneously like this.The polythene material of foaming layer adopts high density polyethylene (HDPE), low density polyethylene (LDPE) Added Nucleating Agents to form.High density polyethylene (HDPE) plays a supportive role to foam structure.Guaranteed the mechanical strength of insulating barrier but the relatively poor low density polyethylene (LDPE) of its electric property forms easily foam high conformity but soft of abscess.Nucleator sees through the crystallization behavior that changes resin, accelerate crystalline rate, increase crystal density and impel fine grain size, reach physical and mechanical properties such as shortening molding cycle, the raising goods transparency, lustrous surface, tensile strength, rigidity, heat distortion temperature, impact resistance, creep resistance.
Claims (2)
1. polyethylene insulation soft radio-frequency cable, comprise the inner wire that from inside to outside sets gradually, insulating barrier, outer conductor and sheath, it is characterized in that, described inner wire is 27 diameters, 0.127 ㎜ silver-plated copper twisted bundles, described insulating barrier is polyethylene layer, the insulating barrier external diameter is 2.4 ㎜, described outer conductor is silver-plated lenticular wire and silver-plated single line woven shield, extrude polyethylene layer on the silver-plated copper twisted bundles inner wire, the silver-plated lenticular wire of braiding and silver-plated single line woven shield outer conductor on the polyethylene layer, extrude pe sheath on the outer conductor, sheath diameter 4.1 ㎜.
2. polyethylene insulation soft radio-frequency cable according to claim 1 is characterized in that, skin-bubble that described insulating barrier foams for the employing physical foaming technology-Pi insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210419819 CN102903989A (en) | 2012-10-29 | 2012-10-29 | Polyethylene insulated flexible radio-frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210419819 CN102903989A (en) | 2012-10-29 | 2012-10-29 | Polyethylene insulated flexible radio-frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102903989A true CN102903989A (en) | 2013-01-30 |
Family
ID=47576125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210419819 Withdrawn CN102903989A (en) | 2012-10-29 | 2012-10-29 | Polyethylene insulated flexible radio-frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102903989A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632634A (en) * | 2016-04-11 | 2016-06-01 | 湖南华菱线缆股份有限公司 | Wire and cable for aerospace |
| CN108182997A (en) * | 2018-02-07 | 2018-06-19 | 昆山安胜达微波科技有限公司 | Photoelectricity hybrid radio frequency coaxial cable |
| CN110459350A (en) * | 2019-08-02 | 2019-11-15 | 上海福尔欣线缆有限公司 | A kind of the coaxial data cable and manufacturing method of Vehicular intelligent control loop |
| CN110634604A (en) * | 2019-09-17 | 2019-12-31 | 浙江佳慧线缆有限公司 | Buried induction shielding three-layer protection wire of automatic mower and manufacturing method thereof |
-
2012
- 2012-10-29 CN CN 201210419819 patent/CN102903989A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632634A (en) * | 2016-04-11 | 2016-06-01 | 湖南华菱线缆股份有限公司 | Wire and cable for aerospace |
| CN108182997A (en) * | 2018-02-07 | 2018-06-19 | 昆山安胜达微波科技有限公司 | Photoelectricity hybrid radio frequency coaxial cable |
| CN110459350A (en) * | 2019-08-02 | 2019-11-15 | 上海福尔欣线缆有限公司 | A kind of the coaxial data cable and manufacturing method of Vehicular intelligent control loop |
| CN110634604A (en) * | 2019-09-17 | 2019-12-31 | 浙江佳慧线缆有限公司 | Buried induction shielding three-layer protection wire of automatic mower and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130130 |