CN215184479U

CN215184479U - Low-loss mechanical amplitude-stabilizing phase-stabilizing coaxial radio frequency cable

Info

Publication number: CN215184479U
Application number: CN202120457585.5U
Authority: CN
Inventors: 李凤芝; 赵聪; 柴勇; 刘德友
Original assignee: Tianjin Aoxuntong Cable Technology Development Co ltd
Current assignee: Tianjin Aoxuntong Cable Technology Development Co ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-12-14
Anticipated expiration: 2031-03-03

Abstract

The utility model belongs to the wire and cable field relates to a steady looks coaxial radio frequency cable of low-loss machinery steady amplitude, including inner conductor, insulating layer, first shielding layer, a plurality of outer conductor, second shielding layer and restrictive coating, wherein, the insulating layer and first shielding layer cladding in proper order in the inner conductor outside, a plurality of outer conductors evenly set up in the first shielding layer outside, and second shielding layer and restrictive coating set gradually the outside of leading outside. According to the utility model discloses a steady looks coaxial radio frequency cable of low-loss machinery steady amplitude can reduce signal transmission's decay, improves the transmission power of cable, reduces the amplitude of change of the cable phase place that crooked or vibrations arouse simultaneously.

Description

Low-loss mechanical amplitude-stabilizing phase-stabilizing coaxial radio frequency cable

Technical Field

The utility model belongs to the wire and cable field especially relates to a stable looks coaxial radio frequency cable of low-loss machinery steady amplitude.

Background

The high-frequency radio frequency cable is widely applied to rail transit, ships, land equipment and other military fields, on one hand, the environment of the actual application field is complex and severe, and on the other hand, the application end has extremely high requirements on the comprehensive performance, especially the signal transmission performance and the safety performance of the cable. How to continuously reduce the inherent loss of the cable in the signal transmission process, improve the anti-interference capability of the cable, and reduce the phase change amplitude of the cable in bending and vibration environments is an important direction for research in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a steady looks coaxial radio frequency cable of stable width of cloth of low-loss machinery.

According to the utility model discloses an aspect provides a steady looks coaxial radio frequency cable of low-loss machinery steady amplitude, including inner conductor, insulating layer, first shielding layer, a plurality of outer conductor, second shielding layer and restrictive coating, wherein, insulating layer and first shielding layer cladding in proper order in the inner conductor outside, a plurality of outer conductors evenly set up in the first shielding layer outside, and second shielding layer and restrictive coating set gradually in the outside of outer conductor.

According to an exemplary embodiment of the present invention, the inner conductor is a silver-plated copper wire.

According to an exemplary embodiment of the invention, the silver plating layer thickness of the inner conductor is not less than 1.5 μm.

According to an exemplary embodiment of the present invention, the insulating layer is semi-sintered polytetrafluoroethylene insulation.

According to the exemplary embodiment of the utility model, first shielding layer adopts silver-plated copper strips transversely to overlap to make around the package, and wherein the silver-plated layer thickness of silver-plated copper strips is 1.5 mu m, transversely is 1.5mm around the package pitch, is the left direction around the package direction, overlaps to take and covers the rate and be 50%.

According to the exemplary embodiment of the present invention, the outer conductor is woven by using a plurality of twisted silver-plated copper wires.

According to an exemplary embodiment of the present invention, the silver plating layer thickness of the outer conductor is 2 μm, and the weaving density is greater than 90%.

According to the exemplary embodiment of the present invention, the second shielding layer is made of fluorinated ethylene propylene extrusion.

According to the exemplary embodiment of the present invention, the sheath layer is made of polyurethane extrusion.

Compared with the prior art, the utility model discloses a steady looks coaxial radio frequency cable of low-loss machinery steady amplitude can reduce signal transmission's decay, improves the transmission power of cable, reduces the amplitude of change of the cable phase place that crooked or vibrations arouse simultaneously.

Drawings

Fig. 1 is a schematic cross-sectional view of a low-loss mechanical amplitude-stabilized phase-stabilized coaxial radio-frequency cable according to the present invention;

in the figure, 1-inner conductor, 2-insulating layer, 3-first shielding layer, 4-outer conductor, 5-second shielding layer, 6-sheath layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a low-loss mechanical amplitude-stabilized coaxial radio-frequency cable includes an inner conductor 1, an insulating layer 2, a first shielding layer 3, a plurality of outer conductors 4, a second shielding layer 5, and a sheath layer 6.

Specifically, the insulating layer 2 and the first shielding layer 3 are sequentially coated on the outer side of the inner conductor 1, the plurality of outer conductors 4 are uniformly arranged on the outer side of the first shielding layer 3, and the second shielding layer 5 and the sheath 6 are sequentially arranged on the outer side of the outer conductor 4.

The inner conductor 1 is a silver-plated copper wire.

The thickness of the silver plating layer of the inner conductor 1 is not less than 1.5 μm.

The insulating layer 2 is made of semi-sintered polytetrafluoroethylene insulation; the semi-sintered polytetrafluoroethylene insulation is not completely sintered, air is filled among polytetrafluoroethylene molecules in the semi-sintered polytetrafluoroethylene insulation, and the relative dielectric constant of the insulation medium is integrally reduced due to the fact that the relative propagation speed of the air is fastest and the dielectric constant is lowest, so that the loss of the cable is reduced.

The first shielding layer 3 is manufactured by adopting a silver-plated copper strip in a transverse overlapping wrapping mode, wherein the thickness of a silver-plated layer of the silver-plated copper strip is 1.5 mu m, the transverse wrapping pitch is 1.5mm, the wrapping direction is the left direction, and the overlapping and covering rate is 50%. The silver-plated copper strip shielding layer increases the structural stability of the product and ensures that the phase change of the cable is very small when the mechanical change is random.

The outer conductor 4 is woven by a plurality of stranded silver-plated copper wires.

The silver plating layer thickness of the outer conductor 4 is 2 μm, and the weaving density is greater than 90%.

The second shielding layer 5 is made of polyfluorinated ethylene propylene through extrusion coating.

Sheath layer 6 adopts polyurethane crowded package to make, and the compliance of polyurethane itself also makes the cable can satisfy the installation requirement in narrower and small space range and provide the convenience.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a steady looks coaxial radio frequency cable of low-loss machinery steady amplitude, a serial communication port, steady looks coaxial radio frequency cable of low-loss machinery steady amplitude includes inner conductor (1), insulating layer (2), first shielding layer (3), a plurality of outer conductor (4), second shielding layer (5) and restrictive coating (6), wherein, insulating layer (2) and first shielding layer (3) cladding in proper order in the inner conductor (1) outside, and a plurality of outer conductor (4) evenly set up in the first shielding layer (3) outside, and second shielding layer (5) and restrictive coating (6) set gradually in the outside of outer conductor (4).

2. The low-loss mechanical amplitude-stabilized coaxial radio-frequency cable according to claim 1, wherein the inner conductor (1) is a silver-plated copper wire.

3. The low-loss mechanically amplitude-stabilized coaxial radio-frequency cable according to claim 2, wherein the silver-plated layer of the inner conductor (1) has a thickness not less than 1.5 μm.

4. The low-loss mechanically amplitude-stabilized coaxial radio-frequency cable according to claim 1, wherein the insulating layer (2) is a semi-sintered polytetrafluoroethylene insulation.

5. The low-loss mechanical amplitude-stabilizing phase-stabilizing coaxial radio-frequency cable according to claim 1, wherein the first shielding layer (3) is made of silver-plated copper strips in a transverse overlapping wrapping mode, the thickness of the silver-plated copper strips is 1.5 μm, the transverse wrapping pitch is 1.5mm, the wrapping direction is the left direction, and the overlapping wrapping rate is 50%.

6. The low-loss mechanical amplitude-stabilizing phase-stabilizing coaxial radio-frequency cable according to claim 1, wherein the outer conductor (4) is made of a plurality of stranded silver-plated copper wires by weaving.

7. The low-loss mechanically amplitude-stabilized coaxial radio-frequency cable according to claim 6, wherein the silver-plated layer of the outer conductor (4) has a thickness of 2 μm and a braiding density of more than 90%.

8. The low-loss mechanical amplitude-stabilized coaxial radio-frequency cable according to claim 1, wherein the second shielding layer (5) is made by extruding fluorinated ethylene propylene.

9. The low-loss mechanical amplitude-stabilized coaxial radio-frequency cable according to claim 1, wherein the sheath layer (6) is made of polyurethane extrusion.