High-elasticity circular waveguide feeder line

Abstract

The utility model relates to the technical field of communication transmission cables, in particular to a high-elasticity circular waveguide feeder line, which sequentially comprises a waveguide tube in the shape of a spiral spring; the aluminum-plastic composite film shielding layer is made of a copper-plastic composite film and wraps the outer surface of the waveguide tube; the copper wire braided shielding layer is braided by copper wires and wraps the outer surface of the aluminum-plastic composite film shielding layer; and the sheath layer is made of a high-temperature-resistant plastic material and wraps the outer surface of the copper wire braided shielding layer. The waveguide tube of the circular waveguide feeder line adopts a high-elasticity material and structure, the bending performance of the circular waveguide feeder line and the adaptation and recovery capability after position change can be remarkably improved, and the high-frequency signal transmission capability of the cable in special environments such as frequent vibration, stretching and torsion can be improved due to the fact that the waveguide tube adopts a spiral spring-shaped structure.

Description

Technical Field

[0001] The utility model relates to the technical field of communication transmission cables, in particular to a high-elasticity circular waveguide feeder. Background Art

[0002] Waveguide feeder is a high-frequency microwave signal transmission medium between high-power signal transmitters and receivers, and is mainly used for high-power radar equipment, high-frequency antenna systems, etc. With the technological evolution of the post-5G communication era and the future 6G mobile communication, the increase in communication frequency has led to the inability to apply conventional coaxial feeders due to limited transmission frequency, which also provides a broad market prospect for the application of waveguide feeders.

[0003] Conventional waveguide feeders use smooth or corrugated copper (aluminum) tubes as waveguide tubes. Although this can effectively prevent signal leakage inside the waveguide, it is easy to damage the waveguide feeder structure in a frequent dynamic environment due to the use of rigid or semi-rigid hard materials and structures, affecting communication performance. Therefore, there is an urgent need to improve the materials and structures of existing circular waveguide feeders.

[0004] High elastic circular waveguide feeder, which is characterized by using high elastic copper clad steel tape spirally wound as waveguide tube, using copper plastic composite film and copper wire braided shielding layer, and using cross-linked polyolefin or rubber as sheath layer. It is mainly used in industrial equipment, vehicle-mounted, military equipment, etc., which are faced with high-frequency signal transmission in high temperature environment and frequent movement, bending, and torsion environment. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to solve the technical problem that conventional waveguide tubes are prone to damage to the waveguide feeder structure in frequent dynamic environments, the utility model provides a highly elastic circular waveguide feeder. This technology uses a highly elastic copper-clad steel strip spirally wound into a waveguide tube, and uses a copper-plastic composite film and a copper wire braided double-layer shielding layer, which can greatly improve the bending performance of the waveguide feeder and effectively shield internal and external electromagnetic signal interference. Therefore, it is more suitable for high-frequency signal transmission in industrial equipment, vehicle-mounted, military equipment, etc. that are simultaneously facing high temperature environments and frequent movement, bending, and torsion environments, and has good application prospects and economic benefits.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a high-elastic circular waveguide feeder, which comprises, from the inside to the outside: a waveguide tube, which is in the shape of a spiral spring; an aluminum-plastic composite film shielding layer, which adopts a copper-plastic composite film and is coated on the outer surface of the waveguide tube; a copper wire braided shielding layer, which adopts copper wire braiding and is coated on the outer surface of the aluminum-plastic composite film shielding layer; a sheath layer, which adopts a high-temperature resistant plastic material and is coated on the outer surface of the copper wire braided shielding layer.

[0007] Furthermore, the waveguide is spirally wound into a round tube shape using a high-elastic copper-clad steel strip.

[0008] Furthermore, the waveguide is made of high-elastic copper-clad steel strip, and the steel used for the high-elastic copper-clad steel strip is high-elastic carbon steel with a grade of 65 or 70.

[0009] Furthermore, the copper used for the high-elastic copper-clad steel strip is TU2 soft copper, and the thickness of the TU2 soft copper is in the range of 0.2 mm to 0.6 mm.

[0010] Furthermore, the copper-plastic composite film comprises a copper layer and a plastic layer, and the thickness of the copper layer ranges from 0.1 mm to 0.2 mm.

[0011] Furthermore, the thickness of the plastic layer ranges from 0.08 mm to 0.2 mm.

[0012] Furthermore, the copper-plastic composite film is longitudinally coated on the outer surface of the waveguide.

[0013] Furthermore, the copper wire used for braiding is electrical soft round copper wire, and the braiding density is greater than 90%.

[0014] Furthermore, the copper wire weaving uses a weaving machine to wrap multiple copper wires in a mesh-like manner on the outer surface of the copper-plastic composite film.

[0015] Furthermore, the sheath layer is made of cross-linked polyolefin or rubber material.

[0016] The beneficial effects of the utility model are:

[0017] 1. The waveguide tube of the circular waveguide feeder adopts high elastic materials and structures, which can significantly improve the bending performance of the circular waveguide feeder and its adaptability and recovery ability after position changes. In addition, since the waveguide tube adopts a spiral spring structure, it can improve the high-frequency signal transmission capability of the cable in special environments such as frequent vibration, stretching, and torsion;

[0018] 2. The copper-plastic composite film and copper wire braided double-layer shielding layer can effectively prevent the leakage of communication signals when the circular waveguide feeder is stretched or twisted, thus improving the communication performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the longitudinal section of the high elastic circular waveguide feeder in the utility model.

[0021] Figure 2 It is a schematic diagram of a cross section of a highly elastic circular waveguide feeder in the utility model.

[0022] In the figure: 1. Waveguide; 2. Aluminum-plastic composite film shielding layer; 3. Copper wire braided shielding layer; 4. Sheath layer. DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model discloses a high-elasticity circular waveguide feeder.

[0026] Reference Figure 1 and Figure 2 A highly elastic circular waveguide feeder is sequentially distributed from the inside to the outside as follows: a waveguide tube 1, a shielding layer and a sheath layer 4. The shielding layer includes an aluminum-plastic composite film shielding layer 2 and a copper wire braided shielding layer 3. The aluminum-plastic composite film shielding layer 2 adopts a copper-plastic composite film and is coated on the outer surface of the waveguide tube 1; the copper wire braided shielding layer 3 adopts copper wire braiding and is coated on the outer surface of the aluminum-plastic composite film shielding layer 2.

[0027] The waveguide tube 1 is in the shape of a spiral spring and is formed by spirally winding a high-elastic copper-clad steel strip into the waveguide tube 1. The high-elastic copper-clad steel strip is used. The steel used for the copper-clad steel strip is made of high-elastic carbon steel with grades of 65 and 70. The copper used for the copper-clad steel is TU2 soft copper, and the thickness of the copper layer ranges from 0.2mm to 0.6mm. The purpose of using high-elastic carbon steel is to improve the elasticity of the waveguide tube 1 so that it can return to its original state when the cable is affected by external forces such as vibration, bending, and torsional deformation. The copper used for the copper-clad steel is TU2 soft copper, and the thickness of the copper layer ranges from 0.2mm to 0.6mm in order to ensure the high-frequency electromagnetic field signal transmission performance of the cable. At the same time, since the feeder of the present invention is suitable for environments such as frequent vibration, bending, and torsional deformation, the appropriate increase in the thickness of the copper layer can ensure that the copper layer on the surface of the feeder conductor is not easily worn, which affects the communication performance.

[0028] The skin depth calculation formula according to the high-frequency electromagnetic field transmitted in the metal conductor is:

[0029]

[0030] in:

[0031] δ——skin depth, unit: m;

[0032] ω——angular frequency, ω=2πf, unit: rad / s, where f is the electromagnetic field frequency, unit: Hz

[0033] μ——magnetic permeability, unit: H / m;

[0034] ρ——resistivity, unit: Ω. M;

[0035] The calculation can be obtained:

[0036] Table 1. Skin depth of high-frequency electromagnetic field transmission in metal conductors

[0037]

[0038] Therefore, the copper layer thickness of the highly elastic copper-clad steel strip as the waveguide 1 can meet the communication requirements under high frequency, and can replace the traditional copper wire or copper-clad aluminum wire as the waveguide 1 of the cable without affecting the high-frequency electrical performance of the cable.

[0039] The copper-plastic composite film includes a copper layer and a plastic layer, the thickness of the copper layer ranges from 0.1 mm to 0.2 mm, and the thickness of the plastic layer ranges from 0.08 mm to 0.2 mm. The copper-plastic composite film is coated on the outer surface of the waveguide 1 in a longitudinal wrapping manner, in order to prevent the leakage of high-frequency electromagnetic field signals transmitted inside the circular waveguide feeder due to gaps in the spirally wound outer conductor when the circular waveguide feeder is in a state of bending, twisting, etc., thereby reducing the signal transmission capability.

[0040] The copper wire braided shielding layer 3 is an electrical soft round copper wire that meets the requirements of GB / T3953-2009, and the braiding density is greater than 90%. On the insulating layer, the copper-plastic braided layer is used to fix and protect the copper-plastic composite film on the one hand, and to prevent external electromagnetic signals from interfering with the transmission signal of the circular waveguide feeder on the other hand.

[0041] The sheath layer 4 is made of cross-linked polyolefin or rubber material to improve the high temperature resistance and environmental resistance of the cable.

[0042] Working principle: The waveguide tube 1 of the circular waveguide feeder adopts high elastic material and structure, which can significantly improve the bending performance of the circular waveguide feeder and its adaptability and recovery ability after position change. And because the waveguide tube 1 adopts a spiral spring structure, it can improve the high-frequency signal transmission ability of the cable in special environments such as frequent vibration, stretching, and torsion. The copper-plastic composite film and copper wire braided double-layer shielding layer can effectively prevent the leakage of communication signals of the circular waveguide feeder under stretching and torsion, and improve the communication performance of the product.

[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A highly elastic circular waveguide feeder, characterized in that: From inside to outside, it includes: The waveguide (1) is in the shape of a spiral spring; An aluminum-plastic composite film shielding layer (2) is made of a copper-plastic composite film and is coated on the outer surface of the waveguide (1); A copper wire braided shielding layer (3) is braided with copper wires and coated on the outer surface of the aluminum-plastic composite film shielding layer (2); The sheath layer (4) is made of high temperature resistant plastic material and is coated on the outer surface of the copper wire braided shielding layer (3).

2. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The waveguide tube (1) is formed into a circular tube shape by spirally winding a high-elastic copper-clad steel strip.

3. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The waveguide (1) is made of a high-elasticity copper-clad steel strip, and the steel used for the high-elasticity copper-clad steel strip is high-elasticity carbon steel with a grade of 65 or 70.

4. The highly elastic circular waveguide feeder according to claim 3, characterized in that: The copper used for the high-elastic copper-clad steel strip is TU2 soft copper, and the thickness of the TU2 soft copper is in the range of 0.2 mm to 0.6 mm.

5. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The copper-plastic composite film comprises a copper layer and a plastic layer, and the thickness of the copper layer ranges from 0.1 mm to 0.2 mm.

6. The highly elastic circular waveguide feeder according to claim 5, characterized in that: The thickness of the plastic layer ranges from 0.08 mm to 0.2 mm.

7. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The copper-plastic composite film is longitudinally coated on the outer surface of the waveguide (1).

8. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The copper wires used for copper wire braiding are electrical soft round copper wires, and the braiding density is greater than 90%.

9. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The copper wire weaving adopts a weaving machine to cover a plurality of copper wires in a mesh shape on the outer surface of the copper-plastic composite film.

10. The highly elastic circular waveguide feeder according to claim 1, characterized in that: The sheath layer (4) is made of cross-linked polyolefin or rubber material.

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