Metal strip line of antenna

Abstract

The utility model discloses a metal strip line of an antenna. A metal strip line of the antenna comprises a metal strip line substrate and at least one conductive welding coating, wherein the metal strip line substrate is provided with at least one conductive welding position; each conductive welding coating is correspondingly arranged on the corresponding conductive welding position, the conductive welding coatings are used for conducting electricity, the particle size of each conductive welding coating ranges from 3 micrometers to 50 micrometers, and the thickness of each conductive welding coating ranges from 3 micrometers to 100 micrometers. The utilization rate of the conductive welding coating material is improved, and meanwhile the conductive performance and the welding performance of the phase shifter cavity are guaranteed.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a metal strip wire for an antenna. Background Technology

[0002] In antenna design practice, aluminum strip wires are often used as a critical signal transmission medium to effectively reduce signal loss and electromagnetic interference. However, traditional strip wires typically involve electroplating nickel, copper, and tin layers onto an aluminum alloy sheet to enhance adhesion, which faces challenges such as low material utilization and poor conductivity. Therefore, there is an urgent need to develop an innovative strip wire design that aims to improve material utilization efficiency while ensuring strip wire performance. Utility Model Content

[0003] The main objective of this application is to provide a metal strip for an antenna, which aims to solve the technical problem of low material utilization in existing metal strips.

[0004] To achieve the above objectives, this application provides a metal strip for an antenna, a metal strip substrate, wherein the metal strip substrate is provided with at least one conductive soldering position;

[0005] At least one conductive welding coating is provided, each of the conductive welding coatings being disposed on each of the conductive welding positions. The conductive welding coatings are used for welding and communication between the antenna and external communication components. The conductive welding coating is a copper coating with a particle size of 3μm-50μm and a thickness of 3μm-100μm.

[0006] Furthermore, in one embodiment, the metal strip substrate is a linear structure; and / or, the metal strip substrate is a zigzag or serpentine structure; and / or, the metal strip substrate is a ring structure; and / or, the metal strip substrate is a fan-shaped structure.

[0007] Furthermore, in one embodiment, the metal strip matrix is ​​a strip-shaped wavy structure formed by alternating U-shaped troughs and inverted U-shaped peaks.

[0008] Furthermore, in one embodiment, the copper coating is made of pure copper or a copper alloy.

[0009] This application also provides a metal strip for an antenna, the metal strip comprising:

[0010] A metal strip substrate, wherein the metal strip substrate is provided with at least one conductive welding position;

[0011] At least one conductive solder coating, the conductive solder coating comprising a copper coating and a solderable coating, the copper coating being disposed on the conductive soldering site, the solderable coating being disposed on the side of the copper coating away from the metal strip substrate, the conductive solder coating being used for soldering and communication between the antenna and external communication components, wherein the conductive solder coating is a copper coating, the copper coating having a particle size of 3μm-50μm, and the copper coating having a thickness of 3μm-100μm.

[0012] Furthermore, in one embodiment, the weldable coating is made of a tin alloy coating, and the particle size of the tin alloy coating is 1μm to 30μm.

[0013] Furthermore, in one embodiment, the thickness of the tin alloy coating is 2 μm to 80 μm.

[0014] Furthermore, in one embodiment, the metal strip substrate is a linear structure; and / or, the metal strip substrate is a zigzag or serpentine structure; and / or, the metal strip substrate is a ring structure; and / or, the metal strip substrate is a fan-shaped structure.

[0015] Furthermore, in one embodiment, the metal strip matrix is ​​a strip-shaped wavy structure formed by alternating U-shaped troughs and inverted U-shaped peaks.

[0016] The technical solution provided in this application involves setting at least one conductive welding position on the metal strip substrate and correspondingly applying a conductive welding coating to that position. This eliminates the need for complete coverage of the conductive welding coating, improving material utilization and reducing waste, while simultaneously ensuring the conductivity and welding performance of the phase shifter cavity. The conductive welding coating is bonded to the metal strip substrate via a cold spraying process, resulting in strong adhesion, a tight interface, uniform thickness, and good conductivity. Furthermore, the particle size and thickness of the conductive welding coating are set to 3μm-50μm, optimizing the conductive path of the metal strip and thus improving signal transmission efficiency. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of the structure of a metal strip wire according to an embodiment of this application;

[0019] Figure 2for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a cross-sectional view of a metal strip wire according to an embodiment of this application;

[0021] Figure 4 This is a cross-sectional view of a metal strip wire according to another embodiment of this application.

[0022] Among them, 100 is the metal strip; 10 is the metal strip substrate; 101 is the conductive welding position; 20 is the conductive welding coating; 30 is the weldable coating; and 40 is the copper coating. Detailed Implementation

[0023] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0024] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0025] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0026] Please refer to Figures 1-4 An embodiment of this application discloses a metal strip 100 for an antenna.

[0027] In one embodiment, such as Figures 1-3 As shown, the metal strip 100 of the antenna includes a metal strip substrate 10 and at least one conductive welding coating 20. The metal strip substrate 10 has at least one conductive welding position, which is a partial area of ​​the surface of the metal strip substrate 10, i.e., a local area, rather than the entire surface of the metal strip substrate 10. The conductive welding coating 20 is disposed on the conductive welding position. The conductive welding coating 20 is used for welding the antenna to external communication components and communicating with each other. Therefore, the conductive welding coating 20 has both conductivity and weldability. Since the conductive welding coating 20 is disposed at a local position of the metal strip substrate 10, rather than covering the entire surface of the metal strip substrate 10 with a layer of conductive welding coating 20, the material of the conductive welding coating 20 is saved, and the waste of the conductive welding coating 20 material is avoided. This improves the utilization rate of the conductive welding coating 20 material while ensuring the conductivity and weldability of the metal strip 100. The conductive solder coating 20 is a copper coating 40, and the particle size of the copper coating 40 is controlled between 3μm and 50μm, while the thickness of the copper coating 40 is in the range of 3μm to 100μm. Due to the small size of the particles, it is easier to form a uniform and dense copper coating 20, which optimizes the conductive path of the metal strip 100 and thus improves the signal transmission efficiency.

[0028] Specifically, a conductive welding coating 20 is sprayed onto a localized area of ​​the metal strip substrate 10 using a cold spraying process, eliminating the need to electroplate the conductive welding coating 20 onto the entire surface of the metal strip substrate 10, thus avoiding material waste and improving the utilization rate of the conductive welding coating material; at the same time, the localized processing method saves time and improves efficiency.

[0029] Furthermore, the conductive welding coating 20 is made of pure copper or a copper alloy. To ensure the conductivity of the conductive welding coating 20, the copper content in the conductive welding coating 20 is greater than or equal to 99.9%, preferably 99.9%. The copper powder particle size of the conductive welding coating 20 is 3μm-50μm. A conductive welding coating 20 with a thickness of 3μm-100μm is sprayed onto the conductive welding position using a cold spraying process. In the cold spraying process, the raw material powder particles of the conductive welding coating 20 are not heated, or are heated only enough to plastically soften the particles. High-pressure gas is used to accelerate the powder particles to a high speed so that they collide with the metal strip substrate 10. The energy associated with the collision event causes a high degree of plastic deformation, which allows the particles to bond with the metal strip substrate 10, thus establishing a layered structure, thereby obtaining the conductive welding coating 20. The bonding strength between the conductive welding coating 20 and the metal strip substrate 10 is 15MPa-70. With a strength of MPa, the bonding strength is high, thus eliminating the need for an additional nickel layer between the metal strip substrate 10 and the conductive welding coating 20 to ensure adhesion, reducing the amount of nickel used and simplifying the process. The cold spraying process uses high-pressure air to cause particles to collide at high speed with the metal strip substrate 10, resulting in plastic deformation and establishing a layered structure. The entire process is purely physical, without chemical reactions, producing no waste gas or wastewater, and the powder is recyclable, making it very environmentally friendly and with minimal pollution.

[0030] Furthermore, the metal strip substrate 10 is made of aluminum alloy and is formed by die casting, stamping, or CNC machining. The processing is simple and low-cost. Specifically, the metal strip substrate 10 can be machined into a strip-shaped wavy structure composed of alternating U-shaped troughs and inverted U-shaped peaks; or into a straight structure; or into a zigzag or serpentine structure; or into a ring structure; or into a fan-shaped structure to ensure antenna performance. Of course, the metal strip substrate 10 can also be machined into specific shapes as needed.

[0031] In another embodiment, such as Figure 4 As shown, the difference between this embodiment and the above embodiment is that the metal strip 100 further includes a solderable coating 30. The solderable coating 30 is disposed on the surface of the copper coating 40 away from the metal strip substrate 10. The solderable coating 30 enhances the solderability of the antenna to external communication components and further improves the antenna's solderability.

[0032] Specifically, a weldable coating 30 is sprayed onto the conductive welding coating 20 using a cold spraying process, which avoids material waste, improves material utilization, and the cold spraying process makes the bonding force between the weldable coating 30 and the conductive welding coating 20 stronger. The spraying of the weldable coating 30 is a purely physical process with no chemical reaction, and no waste gas or wastewater is generated. The powder can be recycled, which is very environmentally friendly. At the same time, the local processing method saves time and improves efficiency.

[0033] Furthermore, the weldable coating 30 is made of a tin alloy coating. The tin alloy is a non-ferrous alloy composed of tin as a base and other alloying elements, such as copper, silver, and bronze. To ensure the weldability of the tin alloy coating, the tin content in the tin alloy coating is greater than or equal to 99.5%, and the tin powder particle size of the tin alloy coating is 1μm to 30μm. A tin alloy coating with a thickness of 2μm to 80μm is sprayed onto the conductive weldable coating 20 using a cold spraying process. In the cold spraying process, the raw material powder particles of the tin alloy coating are not heated, or are heated only enough to plastically soften the particles. High-pressure gas is used to accelerate the powder particles to a high speed, and then they collide with the conductive weldable coating 20. The energy associated with the collision event causes a high degree of plastic deformation, which allows the particles to bond with the conductive weldable coating 20, thus establishing a layered structure and obtaining the tin alloy coating. The bonding strength between the tin alloy coating and the conductive weldable coating 20 is 15MPa-70MPa, which is a high bonding strength. The cold spraying process uses high air pressure to cause particles to collide with the conductive welding coating 20 at high speed, resulting in plastic deformation and thus establishing a layered structure. The entire process is a purely physical process with no chemical reaction, no waste gas or wastewater generated, and the powder can be recycled, making it very environmentally friendly and with minimal pollution.

[0034] In one specific embodiment, the process of preparing the metal strip 100 includes:

[0035] 1) Provide aluminum alloy blanks;

[0036] 2) The aluminum alloy blank is processed into a metal strip matrix 10 of the required shape by die casting, stamping or CNC machining.

[0037] 3) The surface of the metal strip substrate 10, except for the conductive welding position, is shielded with a jig. The jig can be made of stainless steel or aluminum alloy.

[0038] 4) Use a pulsed fiber laser with a wavelength of 1064nm, adjust the focused spot diameter to 1mm, the pulse width to 10ms, and the frequency to 20Hz. Perform point-by-point scanning heating on the surface of the conductive welding position. The scanning speed is 10mm / s, and the heating time for each point is 1s, so that the surface temperature of the conductive welding position reaches 150~250℃.

[0039] 5) Atomized copper powder with an average particle size of 15μm and a purity of 99.95% was sprayed onto the conductive welding position using a cold spraying process to prepare a conductive welding coating 20 with a thickness of 30μm. The spraying temperature was 200~500℃ and the pressure was 1~3Mpa.

[0040] 6) A tin solder composed of tin and bronze with an average particle size of 5 μm is sprayed onto the conductive solder coating 20 using a cold spraying process to prepare a solderable coating 30 with a thickness of 15 μm.

[0041] 7) Remove the shielding fixture to obtain a metal strip 100 consisting of an aluminum substrate, a copper intermediate layer and a tin solder layer.

[0042] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above. For the sake of brevity, they are not provided in detail. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A metal strip wire for an antenna, characterized in that, The metal strip includes: A metal strip substrate, wherein the metal strip substrate is provided with at least one conductive welding position; At least one conductive welding coating is provided, each of the conductive welding coatings being disposed on each of the conductive welding positions. The conductive welding coatings are used for welding and communication between the antenna and external communication components. The conductive welding coating is a copper coating with a particle size of 3μm-50μm and a thickness of 3μm-100μm.

2. The metal strip according to claim 1, characterized in that, The metal strip substrate has a linear structure; and / or, the metal strip substrate has a zigzag or serpentine structure; and / or, the metal strip substrate has a ring structure; and / or, the metal strip substrate has a fan-shaped structure.

3. The metal strip according to claim 1, characterized in that, The metal strip matrix is ​​a strip-shaped, wavy structure formed by alternating U-shaped troughs and inverted U-shaped peaks.

4. The metal strip according to claim 1, characterized in that, The copper coating is made of pure copper or a copper alloy.

5. A metal strip wire for an antenna, characterized in that, The metal strip includes: A metal strip substrate, wherein the metal strip substrate is provided with at least one conductive welding position; At least one conductive solder coating, the conductive solder coating comprising a copper coating and a solderable coating, the copper coating being disposed on the conductive soldering site, the solderable coating being disposed on the side of the copper coating away from the metal strip substrate, the conductive solder coating being used for soldering and communication between the antenna and external communication components, wherein the conductive solder coating is a copper coating, the copper coating having a particle size of 3μm-50μm, and the copper coating having a thickness of 3μm-100μm.

6. The metal strip according to claim 5, characterized in that, The weldable coating is made of tin alloy and the particle size of the tin alloy coating is 1μm to 30μm.

7. The metal strip according to claim 6, characterized in that, The thickness of the tin alloy coating is 2μm to 80μm.

8. The metal strip wire according to claim 5, characterized in that, The metal strip substrate has a linear structure; and / or, the metal strip substrate has a zigzag or serpentine structure; and / or, the metal strip substrate has a ring structure; and / or, the metal strip substrate has a fan-shaped structure.

9. The metal strip according to claim 5, characterized in that, The metal strip matrix is ​​a strip-shaped, wavy structure formed by alternating U-shaped troughs and inverted U-shaped peaks.

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