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WO2018121339A1 - Câble coaxial à fuite de type radiant à large bande résistant à la flexion - Google Patents

Câble coaxial à fuite de type radiant à large bande résistant à la flexion Download PDF

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Publication number
WO2018121339A1
WO2018121339A1 PCT/CN2017/117114 CN2017117114W WO2018121339A1 WO 2018121339 A1 WO2018121339 A1 WO 2018121339A1 CN 2017117114 W CN2017117114 W CN 2017117114W WO 2018121339 A1 WO2018121339 A1 WO 2018121339A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner conductor
coaxial cable
leaky coaxial
insulator
bending
Prior art date
Application number
PCT/CN2017/117114
Other languages
English (en)
Chinese (zh)
Inventor
沈小平
孙胜军
王念立
喻志安
杜晓东
Original Assignee
通鼎互联信息股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 通鼎互联信息股份有限公司 filed Critical 通鼎互联信息股份有限公司
Publication of WO2018121339A1 publication Critical patent/WO2018121339A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper
    • 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/04—Concentric cables

Definitions

  • the present application belongs to the technical field of transmission cable design and manufacture, and in particular relates to a bending-resistant broadband radiation type leaky coaxial cable.
  • the present application aims to propose a bending-resistant broadband radiation type leaky coaxial cable, which has good bending performance, and is of great value for the application of the cable to the indoor coverage scene.
  • a bending-resistant broadband radiation type leaky coaxial cable comprising an inner conductor extending in the axial direction, and an insulator, an outer conductor and an outer sheath disposed from the inside to the outside of the inner conductor; the inner conductor adopts a spiral wrinkle copper a tube; the outer conductor is tightly coated on the insulator, and is periodically slotted in the axial direction, and has a V-shaped cross section on the outer surface thereof.
  • the insulator is a continuous foamed polyethylene insulation layer concentrically wrapped around the inner conductor.
  • the insulator has a nominal diameter of 22 mm.
  • the slotted holes in the insulator are a plurality of groups arranged at equal intervals, and each group includes two slots correspondingly disposed, and the two form a figure-eight structure.
  • the inner diameter of the spiral corrugated copper tube used in the inner conductor is 7.60 mm ⁇ 0.30 mm.
  • the spiral wrinkle copper tube used in the inner conductor has an outer diameter of 9.40 ⁇ 0.20 mm and an outer diameter of the valley of 7.30 ⁇ 0.30 mm.
  • the present application adopts a spiral corrugated copper tube as an inner conductor, and at the same time, the outer surface of the outer conductor is pressed into a V-shaped roll by a roll fabric device, so that the cable itself has good bending resistance.
  • the leaky coaxial cable is applied to a wider frequency band, and the copper strip as the outer conductor is continuous, uniform, and free from defects, and the controlled electromagnetic wave energy can be radiated and received uniformly along the line to achieve coverage of the electromagnetic field blind zone. In order to achieve the purpose of smooth mobile communication.
  • Figure 1 is a schematic view of the structure of the present application.
  • connection In the description of the present application, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meanings of the above terms in the present application can be understood by a person of ordinary skill in the art.
  • a bending-resistant broadband radiation type leaky coaxial cable as shown in FIG. 1, includes an inner conductor 1 extending in the axial direction, and an insulator 2, an outer conductor 3 and an outer sheath which are disposed in order from the inside to the outside of the inner conductor 1 4; the inner conductor 1 is a spiral corrugated copper tube; the outer conductor 3 is tightly coated on the insulator 2, which periodically slots the hole 5 in the axial direction, and has a cross section on the outer surface thereof. V-shaped roll 6.
  • the outer conductor 3 is formed by longitudinally lap-bonding of copper strips.
  • the material of the copper strip should be uniform, the thickness is uniform, the surface is smooth and flat without defects, and the outer conductor copper strip should be continuous, free of oil, and free of defects such as oxidation. In order to ensure the low attenuation of the leaky coaxial cable, low voltage standing wave ratio and strong environmental adaptability.
  • the leaky coaxial cable is applicable to a wider frequency band, and has both a signal transmission function and an antenna function.
  • the copper strip as the outer conductor is continuous, uniform, and free from defects, and the controlled electromagnetic wave energy can be radiated uniformly along the line. Received in, to achieve coverage of the electromagnetic field blind zone, in order to achieve the purpose of mobile communication.
  • the outer conductor has a periodic slot structure with the characteristic of radiating electromagnetic waves outward.
  • the outer conductor copper strip is pressed by the V-shaped corrugated fabric by the roller device, the corrugation pitch is 0.5-2.0 mm, and the embossing depth is 0.2-1.0 mm, which obviously improves the bending performance of the cable.
  • the spiral corrugated copper tube weld used in the inner conductor 1 is continuous, smooth, and has no pinhole defects;
  • the insulator 2 is made by mixing different density polyethylene insulation materials and a small amount of nucleating agent in an appropriate ratio. Insulation grade polyethylene insulation blend.
  • the insulator is prepared by physical foaming of carbon dioxide or nitrogen. After a certain proportion of various polyethylene insulating materials are uniformly mixed, it is heated and melted in an extruder, and high-purity carbon dioxide or nitrogen is injected into the molten insulator through a syringe in a high-pressure form to be thoroughly mixed.
  • the foamed insulator is formed by extrusion through a handpiece.
  • the insulator 2 is a continuous foamed polyethylene insulation layer concentrically wrapped around the inner conductor.
  • the nominal diameter of the above insulator is preferably taken to be 22 mm.
  • the slots 5 formed in the insulator 2 are a plurality of groups arranged at equal intervals, and each group includes two slots correspondingly disposed, and the two form a figure-eight structure.
  • the outer conductor copper strip is provided with periodically arranged slots having a pitch corresponding to the wavelength of the use frequency. There is no resonance point, and the coupling loss of 50% of the same frequency is less than 5dB with the coupling loss of 95%, thereby greatly improving the quality of the communication signal and satisfying the signal transmission of the broadband communication system of 2G, 3G and 4G.
  • the inner conductor copper tube spiral wrinkle structure is rolled by a welding embossing production equipment.
  • the inner conductor of the spiral corrugated copper tube is formed by longitudinally forming a copper strip, welding, spiral embossing or spiral embossing of a copper tube.
  • the peak outer diameter is 9.40 ⁇ 0.20 mm
  • the outer diameter of the trough is 7.30 ⁇ 0.30 mm
  • the spiral wrinkle pitch is 7.60 ⁇ 0.30 mm
  • the minimum thickness of the tube wall before embossing is 0.21 mm.
  • the outer sheath 4 is preferably made of a black polyethylene sheath or a low-smoke halogen-free flame-retardant polyolefin sheath, which has better waterproof and fireproof performance, makes the use of the cable safer, and adopts a suitable polyethylene sheath to ensure the cable itself. Less interfered by the external environment.
  • the outer sheath may be an inner layer and an outer layer double-layer structure, and an ointment is applied between them to ensure that the external force is pressed and impacted when used or laid. .
  • the inner conductor structure is of a smooth copper tube type.
  • the radiation-type leaky coaxial cable with an insulation nominal outer diameter of 22 mm as described in the application has an inner conductor structure of a spiral corrugated copper tube structure. The latter has better bending resistance due to the different inner conductor structure.
  • the inner conductor is a spiral corrugated copper tube structure, the bending resistance of the leaky coaxial cable is remarkably improved.
  • the present application adopts a spiral corrugated copper tube as an inner conductor, and at the same time, the outer surface of the outer conductor is pressed into a V-shaped roll by a roll fabric device, so that the cable itself has good bending resistance.
  • the leaky coaxial cable is applied to a wider frequency band, and the copper strip as the outer conductor is continuous, uniform, and free from defects, and the controlled electromagnetic wave energy can be radiated and received uniformly along the line to achieve coverage of the electromagnetic field blind zone. In order to achieve the purpose of smooth mobile communication.

Landscapes

  • Communication Cables (AREA)
  • Waveguide Aerials (AREA)
  • Waveguides (AREA)

Abstract

L'invention concerne un câble coaxial à fuite de type radiant à large bande résistant à la flexion, comprenant un conducteur interne (1) s'étendant dans une direction axiale, et un isolant (2), un conducteur externe (3) et une gaine externe (4) disposés à l'extérieur du conducteur interne en séquence de l'intérieur vers l'extérieur ; le conducteur interne est un tube en cuivre ondulé en spirale ; le conducteur externe recouvre étroitement l'isolant, et est périodiquement pourvu de fentes (5) dans la direction axiale ; des stries (6) ayant des sections transversales en forme de V sont disposées sur la surface externe du conducteur externe. Dans le câble, un tube de cuivre ondulé en spirale est utilisé comme conducteur interne, et des stries en forme de V sont formées sur la surface externe du conducteur externe par pression avec un appareil de striage, de telle sorte que le câble a une bonne résistance à la flexion. De plus, le câble coaxial à fuite est applicable à une bande plus large, et une bande de cuivre utilisée comme conducteur externe est continue, uniforme et exempte de défauts, de telle sorte qu'une énergie d'onde électromagnétique commandée peut être uniformément rayonnée et reçue le long d'une ligne pour couvrir une zone aveugle d'un champ électromagnétique, et par conséquent, une communication mobile lisse est obtenue.
PCT/CN2017/117114 2016-12-30 2017-12-19 Câble coaxial à fuite de type radiant à large bande résistant à la flexion WO2018121339A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611263504.8 2016-12-30
CN201611263504.8A CN106601326A (zh) 2016-12-30 2016-12-30 一种耐弯曲宽频辐射型漏泄同轴电缆

Publications (1)

Publication Number Publication Date
WO2018121339A1 true WO2018121339A1 (fr) 2018-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/117114 WO2018121339A1 (fr) 2016-12-30 2017-12-19 Câble coaxial à fuite de type radiant à large bande résistant à la flexion

Country Status (2)

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CN (1) CN106601326A (fr)
WO (1) WO2018121339A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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CN116666984A (zh) * 2023-07-31 2023-08-29 中天射频电缆有限公司 漏泄电缆
CN119101278A (zh) * 2024-11-11 2024-12-10 珠海汉胜科技股份有限公司 交联聚烯烃发泡绝缘层的制备方法及交联聚烯烃发泡绝缘层及高功率馈线

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106601326A (zh) * 2016-12-30 2017-04-26 通鼎互联信息股份有限公司 一种耐弯曲宽频辐射型漏泄同轴电缆
CN109037955B (zh) * 2018-08-07 2019-11-05 江苏亨鑫科技有限公司 一种应用于带状狭长区域的漏缆布置方法
CN112700923B (zh) * 2020-11-26 2022-09-27 通鼎互联信息股份有限公司 一种辐射型漏缆

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CN101000813A (zh) * 2006-12-08 2007-07-18 江苏亨鑫科技有限公司 移动通信用皱纹管外导体射频同轴电缆
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116666984A (zh) * 2023-07-31 2023-08-29 中天射频电缆有限公司 漏泄电缆
CN116666984B (zh) * 2023-07-31 2023-10-31 中天射频电缆有限公司 漏泄电缆
CN119101278A (zh) * 2024-11-11 2024-12-10 珠海汉胜科技股份有限公司 交联聚烯烃发泡绝缘层的制备方法及交联聚烯烃发泡绝缘层及高功率馈线

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