CN213071384U

CN213071384U - 5G intermediate frequency radiation type leakage coaxial cable

Info

Publication number: CN213071384U
Application number: CN202021297119.7U
Authority: CN
Inventors: 沈小平; 孙胜军
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-27
Anticipated expiration: 2030-07-06

Abstract

The application relates to a 5G intermediate frequency radiation type leaky coaxial cable, including: the inner conductor is a smooth copper pipe or a spiral corrugated copper pipe; an insulator extruded outside the inner conductor, the insulator having a nominal diameter of 22 mm; the outer conductor is tightly coated outside the insulator, is longitudinally coated and lapped for molding, and is periodically provided with a slotted hole and roll grains along the length direction of the cable; and the outer sheath is coated outside the outer conductor. The utility model has the advantages that: the outer diameter of the insulator is controlled to be about 22mm, so that the high-frequency applicability is better; the outer conductor is periodically provided with the slotted holes and the roll marks along the length direction of the cable, the performance of radiating electromagnetic waves outwards is improved, and the bending performance of the cable is obviously improved.

Description

5G intermediate frequency radiation type leakage coaxial cable

Technical Field

The application belongs to the field of mobile communication, and particularly relates to a 5G intermediate frequency radiation type leaky coaxial cable.

Background

With the development of 5G mobile communication, the frequency band used for wireless communication is expanding to high frequency. The traditional 13/8' leaky cable covered by the network in the subway and railway tunnel can not support the 5G coverage of the 3.6GHz band due to the existence of cut-off frequency. 5/4 'leaky cables can meet the 5G coverage of a 3.6GHz frequency band, so 5/4' leaky cables are generally adopted for the 5G communication at the present stage. However, for the 4.8G to 5G intermediate frequency band to be used in the 5G communication in the future, 5/4 ″ leaky cable cannot support the coverage of the 5G mobile communication in the frequency band due to the existence of the cut-off frequency. The 5G medium-frequency band radiation type leaky coaxial cable has the electrical performance of supporting the 4.8G-5G frequency band, and has important value for the application of the leaky cable in 5G mobile communication.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the leaky coaxial cable is a 5G medium frequency radiation type leaky coaxial cable, and aims to solve the problem that the leaky coaxial cable in the prior art does not support 4.8G-5G medium frequency coverage of 5G mobile communication.

The utility model provides a technical scheme that its technical problem adopted is:

a 5G intermediate frequency radiation type leaky coaxial cable, comprising:

the inner conductor is a smooth copper pipe or a spiral corrugated copper pipe;

an insulator extruded outside the inner conductor, the insulator having a nominal diameter of 22 mm;

the outer conductor is tightly coated outside the insulator, is longitudinally coated and lapped for molding, and is periodically provided with a slotted hole and roll grains along the length direction of the cable;

and the outer sheath is coated outside the outer conductor.

Preferably, the material of the 5G intermediate frequency radiation type leaky coaxial cable of the present invention, the outer sheath, is black polyethylene or low smoke zero halogen flame retardant polyolefin.

Preferably, the utility model discloses a 5G intermediate frequency radiation type leaky coaxial cable, the inner conductor is spiral wrinkle copper pipe, the inner conductor is indulged the package by the copper strips and is shaped, has the spiral embossing, the crest external diameter of spiral embossing is 9.40 ± 0.20mm, the trough external diameter is 7.30 ± 0.30mm, the spiral wrinkle pitch is 7.60 ± 0.30mm, the minimum thickness of pipe wall before the embossing is 0.21 mm.

Preferably, the 5G medium frequency radiation type leaky coaxial cable of the utility model has corrugated grains or dot matrix grains.

Preferably, the 5G intermediate frequency radiation type leaky coaxial cable of the present invention, the shape of the slot is a strip, and two adjacent slots form a "splay" shape between the slots.

Preferably, the utility model discloses a 5G intermediate frequency radiation type leaky coaxial cable, the outer conductor material is unanimous, thickness is even, the surface is smooth level and smooth.

Preferably, the 5G medium frequency radiation type leaky coaxial cable of the utility model has the insulator in a carbon dioxide or nitrogen physical foaming structure.

Preferably, the 5G medium frequency radiation type leaky coaxial cable of the invention, the insulator is formed by mixing polyethylene insulating material and nucleating agent.

The utility model has the advantages that: the outer diameter of the insulator is controlled to be about 22mm, so that the high-frequency applicability is better; the outer conductor is periodically provided with the slotted holes and the roll marks along the length direction of the cable, the performance of radiating electromagnetic waves outwards is improved, and the bending performance of the cable is obviously improved.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

Fig. 1 is a schematic structural view of a 5G intermediate frequency radiation leaky coaxial cable according to an embodiment of the present application.

The reference numbers in the figures are:

an inner conductor 1; an insulator 2; an outer conductor; 3 an outer sheath 4; the slot 31; a roll line 32.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples

The present embodiment provides a 5G if radiating leaky coaxial cable, as shown in fig. 1, including:

the inner conductor 1 is a smooth copper pipe or a spiral corrugated copper pipe;

an insulator 2 extruded outside the inner conductor 1, the insulator 2 having a nominal diameter of 22 mm;

the outer conductor 3 is tightly coated outside the insulator 2, the outer conductor 3 is longitudinally coated and lapped to be formed, and a slotted hole 31 and a roll line 32 are periodically arranged along the length direction of the cable;

and an outer sheath 4 covering the outer conductor 3.

In the 5G intermediate frequency radiation type leaky coaxial cable of the embodiment, the nominal diameter of the insulator 2 is controlled to be 22mm, and the 4.8G to 5G intermediate frequency band coverage supporting 5G mobile communication is realized. The outer conductor 3 is periodically provided with the slotted hole 31 in the length direction of the cable, the structure improves the performance of the coaxial cable for radiating electromagnetic waves outwards, and the slotted hole 31 is formed by punching on the outer conductor 3. The roll grains 32 significantly improve the bending performance of the cable, and the specific outer conductor is formed by embossing the roll grains 32.

Preferably, in the 5G intermediate frequency radiation type leaky coaxial cable of this embodiment, the outer sheath 4 is made of black polyethylene or low-smoke halogen-free flame-retardant polyolefin. The black polyethylene or the low-smoke halogen-free flame-retardant polyolefin has certain flame-retardant property, and can avoid the cable from being on fire to a greater extent.

Preferably, in the 5G medium frequency radiation leaky coaxial cable of the present embodiment, the inner conductor 1 is a spiral corrugated copper tube, the inner conductor 1 is longitudinally wrapped by a copper strip, and has a spiral corrugation, the outer diameter of a peak of the spiral corrugation is 9.40 ± 0.20mm, the outer diameter of a valley of the spiral corrugation is 7.30 ± 0.30mm, the pitch of the spiral corrugation is 7.60 ± 0.30mm, and the minimum thickness of a tube wall before corrugation is 0.21 mm. When the inner conductor 1 is a spiral corrugated copper pipe, the inner conductor 1 can have certain bending performance, and the spiral corrugation can enhance the stability of radiation.

Preferably, in the 5G medium frequency radiation leaky coaxial cable of the embodiment, the roll grains 32 are corrugated grains or lattice grains.

Preferably, in the 5G intermediate frequency radiation type leaky coaxial cable of this embodiment, as shown in fig. 1, the shape of the slot 31 is a strip, and a "eight" shape is formed between two adjacent slots 31. As shown in fig. 1, the slot 31 is at an angle, such as 30 degrees to 60 degrees, relative to the axis of the cable, so that the length of the slot 31 can be relatively long, further improving the radiation performance.

Preferably, in the 5G intermediate frequency radiation type leaky coaxial cable of this embodiment, the outer conductor 3 is a copper tape, and has a uniform material, a uniform thickness, and a smooth and flat surface.

Preferably, in the 5G intermediate frequency radiation type leaky coaxial cable of the embodiment, the insulator 2 is a carbon dioxide or nitrogen physical foaming structure. Specifically, the insulator is prepared by physically foaming carbon dioxide or nitrogen, a plurality of polyethylene insulating materials in a certain proportion are uniformly mixed, then the mixture is heated and melted in an extruding machine, high-purity carbon dioxide or nitrogen is injected into the molten insulator in a high-pressure mode through an injector and is fully mixed, and the mixture is extruded through a machine head to form the foamed insulator.

Preferably, in the 5G medium frequency radiation leaky coaxial cable of this embodiment, the insulator 2 is formed by mixing a polyethylene insulating material and a nucleating agent. Specifically, the insulator 2 is formed by continuously concentrically extruding an insulating material mixture of insulating polyethylene grades, which is formed by mixing polyethylene insulating materials with different densities and a small amount of nucleating agent according to a proper proportion, on the inner conductor 1 to form a foamed polyethylene insulating layer.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A5G intermediate frequency radiation type leaky coaxial cable, comprising:

the inner conductor (1) is a smooth copper pipe or a spiral corrugated copper pipe;

an insulator (2) extruded outside the inner conductor (1), the insulator (2) having a nominal diameter of 22 mm;

the outer conductor (3) is tightly coated outside the insulator (2), the outer conductor (3) is longitudinally coated, lapped and molded, and a slotted hole (31) and a roll mark (32) are periodically arranged along the length direction of the cable;

an outer sheath (4) covering the outer conductor (3);

the roll grains (32) are corrugated grains or dot matrix grains;

the slotted holes (31) are in a strip shape, and a splayed shape is formed between every two adjacent slotted holes (31); the slot (31) is at an angle of 30-60 degrees with respect to the axis of the cable.

2. The 5G intermediate frequency radiation type leaky coaxial cable as claimed in claim 1, wherein the material of the outer sheath (4) is black polyethylene or low smoke zero halogen flame retardant polyolefin.

3. The 5G intermediate frequency radiation type leaky coaxial cable as claimed in claim 2, wherein said inner conductor (1) is a spirally corrugated copper tube, said inner conductor (1) is longitudinally wrapped with a copper strip, and has a spiral corrugation, said spiral corrugation has a crest outer diameter of 9.40 ± 0.20mm, a trough outer diameter of 7.30 ± 0.30mm, a spiral corrugation pitch of 7.60 ± 0.30mm, and a minimum wall thickness of 0.21mm before corrugation.

4. 5G leaky coaxial cable of intermediate frequency radiation according to any of claims 1-3, wherein the outer conductor (3) is of uniform material, uniform thickness, and smooth and flat surface.

5. 5G leaky coaxial cable of medium frequency radiation type according to any of claims 1-3, characterized in that the insulator (2) is a carbon dioxide or nitrogen physically foamed structure.