CN111769354B - Antenna structure and preparation method - Google Patents
Antenna structure and preparation method Download PDFInfo
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- CN111769354B CN111769354B CN202010660525.3A CN202010660525A CN111769354B CN 111769354 B CN111769354 B CN 111769354B CN 202010660525 A CN202010660525 A CN 202010660525A CN 111769354 B CN111769354 B CN 111769354B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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Abstract
The invention discloses a novel antenna structure and a preparation method thereof, and the novel antenna structure comprises a shell, wherein a groove with a rightward opening is formed in the right side surface of the shell, a first roughening layer, a first conductive layer, a polishing layer and a paint spraying layer are sequentially arranged in the middle of the left side surface of the shell from right to left, a frustum-shaped blind hole with a small left and a large right and a rightward opening is formed in the left end of the groove, the left end of the groove penetrates through the shell and the first roughening layer leftwards, a second roughening layer and a second conductive layer are sequentially arranged on the right side of the joint of the inner wall of the blind hole and the first roughening layer and on the shell around the right side of the blind hole from left to right, and metal is sprayed on the second roughening layer to form the second conductive layer; the first conducting layer is formed by metal spraying on the first coarsening treatment layer, the first conducting layer and the shell around the first conducting layer are polished to form a polishing layer, and the polishing layer is provided with the paint spraying layer. The invention has the advantages of easy processing, low reject ratio and the like.
Description
Technical Field
The invention belongs to the technical field of electronic equipment, and particularly relates to a novel antenna structure and a preparation method thereof.
Background
The antenna of the existing electronic equipment such as the mobile phone is usually arranged in the mobile phone, corresponding electronic components are more and more along with the increase of the functions of the mobile phone, the utilization rate of the internal space of the mobile phone reaches the limit, the number of the antennas is obviously increased along with the arrival of the 5G era, in order to meet the clearance requirement on antenna design, the antenna is inevitably required to be arranged on metal parts far away from the inside as much as possible, therefore, the mobile phone antenna is arranged on the appearance side outside the mobile phone shell, namely, the antenna is not arranged inside the mobile phone and becomes the mainstream, the method for preparing the antenna on the shell is appeared on the market, the shell produced by adopting the method is provided with a reserved hole or a pre-buried connecting bracket, then the antenna is finally arranged outside the shell by installing the connecting bracket in the reserved hole, and the method is suitable for being used when the shell has larger thickness, the existing patent application No. 201910745668.1 and patent application No. 201921312414.4 are the methods, the antenna on the shell prepared by the method needs to directly install the connecting frame in the reserved hole or carry out metal spraying in the reserved hole to fill the reserved hole so as to form the connecting frame, the connecting frame installed in the reserved hole needs thicker wall thickness to be processed and fixed, so the antenna is not suitable for the shell with smaller thickness, in addition, the reserved hole of the shell with the wall thickness is longer and is not beneficial to spraying and covering, or the size of the reserved hole is enlarged, but the larger the reserved hole is, the more difficult the hole is to be blocked by filling, and the inner space which is increasingly tense in electronic products is occupied, moreover, the reserved hole is a through hole, when carrying out metal spraying, because the bottom support is not provided, part of metal particles or metal powder directly penetrates through the shell to be directly sprayed out from the other end of the shell, and the reserved hole is difficult to be blocked, making subsequent appearance treatment difficult.
Disclosure of Invention
The invention provides a novel antenna structure which is easy to process and a preparation method thereof, aiming at overcoming the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a novel antenna structure comprises a shell, wherein a groove with a right opening is formed in the right side face of the shell, a first roughening layer, a first conductive layer, a polishing layer and a paint spraying layer are sequentially arranged in the middle of the left side face of the shell from right to left, a frustum-shaped blind hole with a small left opening and a large right opening is formed in the left end of the groove, the shell penetrates through the shell and the first roughening layer leftwards, a second roughening layer and a second conductive layer are sequentially arranged on the right side of the joint of the inner wall of the blind hole, the first roughening layer and the blind hole and on the shell around the right side of the blind hole from left to right, and metal spraying is carried out on the second roughening layer to form the second conductive layer; the first conducting layer is formed by metal spraying on the first coarsening treatment layer, the first conducting layer and the shell around the first conducting layer are polished to form a polishing layer, and the polishing layer is provided with the paint spraying layer.
Preferably, the first and second conductive layers are each comprised of one or more layers of metal particles or powder coatings.
Another objective of the present invention is to provide a method for manufacturing a novel antenna structure, which includes the following steps:
s1, taking a shell with a right groove opening on the right side surface, and shielding partial areas on the left side and the right side of the shell to expose areas needing spraying on the left side surface and the right side surface of the shell;
s2, processing a corresponding antenna pattern groove position in an area, needing metal spraying, on the left side surface of the shell;
s3, performing surface treatment on the antenna pattern groove to form the first coarsening treatment layer;
s4, spraying metal particles or powder on the first coarsening treatment layer through a metal spraying technology to form the first conductive layer;
s5, punching the shell and the first coarsening layer on the left side surface of the shell leftwards through the left end of the groove of the shell by using a marking machine, forming a frustum-shaped blind hole with a left small opening and a right large opening with the right side surface of the first conductive layer, and simultaneously performing surface treatment on the inner wall of the blind hole, the right side of the first coarsening layer, which is in contact with the blind hole, and the shell on the periphery of the right side of the blind hole to form the second coarsening layer;
s6, performing metal spraying on the second coarsening layer to form a second conductive layer;
s7, removing the masking in step S1;
s8, polishing the first conducting layer and the first conducting layer peripheral shell by using a polishing machine until the first conducting layer and the first conducting layer peripheral shell are on the same plane to form a corresponding polishing layer;
and S9, performing paint spraying treatment on the polishing layer by using paint spraying equipment to form the paint spraying layer.
Preferably, the depth value of the antenna pattern groove in step S2 is 0.01 to 0.1 mm.
Preferably, the diameter of the metal particles in the step S4 and the step S6 is 2 to 100 μm.
Preferably, in the step S4 and the step S6, one or more layers of metal particles or powder are sprayed, and the thickness of each of the first conductive layer and the second conductive layer is 0.02-0.5 mm.
Preferably, the thickness of the paint layer is 8-150 μm.
By adopting the technical scheme, the invention has the following beneficial effects:
the invention directly processes the shell with the groove on the right side surface, firstly processes the first coarsening layer and the first conductive layer on the left side surface of the shell, then forms the blind hole after punching by a marking machine, then forms the second conductive layer on the second coarsening layer by a metal spraying mode, because the other end of the blind hole is blind, the first conductive layer is used as the support bottom, and the groove where the blind hole is located is the thin-wall shell, when metal spraying is carried out, the complete and coherent second conductive layer is easier to form in the blind hole (in the prior art, either the reserved hole is too long, or the reserved hole is not too large, or the difficulty is not small for communicating the two ends of the shell by adopting the metal spraying process), not only the processing is easy, the time consumption is short, but also the coherent second conductive layer is easier to form, the reject ratio is low, and when spraying is being carried out to the frustum form blind hole that forms big end to end with first conducting layer, first conducting layer is as holding in the palm the end, metal particle or powder can reach first conducting layer surface in the blind hole easily, adhere to first conducting layer and blind hole inner wall and finally form the second conducting layer, little end to end frustum form blind hole also is convenient for metal particle or powder gathering to adhere to first conducting layer and blind hole inner wall, furthermore, the inside wall to the frustum dress blind hole carries out the coarsening treatment when punching and running through to first conducting layer, be more favorable to the adhesion of metal spraying layer (second conducting layer), and the novel antenna structure of the invention does not have water pollution in the course of working, occupation space is little.
Drawings
FIG. 1 is a schematic structural view of a housing according to an embodiment of the present invention when the housing is not perforated;
FIG. 2 is a schematic structural diagram of one embodiment of the present invention;
FIG. 3 is an enlarged view at P in FIG. 2;
FIG. 4 is a schematic structural diagram of another embodiment of the present invention;
FIG. 5 is an enlarged view at M in FIG. 4;
FIG. 6 is a flow chart of a method of making the novel antenna structure of the present invention;
fig. 7 is a right side view of fig. 2.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3 and 7, in one embodiment, the novel antenna structure of the present invention includes a housing 1, a groove 2 with a right opening is disposed on a right side surface of the housing 1, the groove 2 may be a minor arc-shaped groove 2 with a right opening, a major arc-shaped groove 2 with a right opening, or other regular or irregular grooves 2, the groove 2 may be a circular groove 2, or an elliptical groove 2, the groove 2 with any shape falls within the protection scope of the present invention, the present invention does not specifically limit the shape of the groove 2, as shown in fig. 2 and 3, a first roughening layer 3, a first conductive layer 4, a polishing layer 5, and a paint spraying layer 6 are sequentially disposed in a middle portion of the left side surface of the housing 1 from right to left, a frustum-shaped blind hole with a left small left opening and a large right opening is disposed through the housing 1 and the first roughening layer 3 to left of the left end of the groove 2, the shape of the blind hole can be set into other shapes such as a cylinder, a rectangle and the like, the invention does not make specific requirements on the shape of the blind hole and the shape of the blind hole formed by the blind hole and the first coarsening treatment layer, any shape is within the protection scope of the invention, the first coarsening treatment layer 3 is provided with a corresponding pattern groove position, the pattern groove position has a certain depth, which is usually 0.01-0.1mm lower than the left side surface of the shell 1, the pattern groove position is filled by a metal spraying technology, so as to form a corresponding first conductive layer 4, the first conductive layer 4 can form a connecting circuit structure such as a connecting line, an antenna and the like on the shell 1, the invention does not specifically limit the connecting circuit structure formed by the first conductive layer 4, the inner wall of the blind hole, the right side of the connecting part of the first coarsening treatment layer 3 and the blind hole and the shell 1 at the periphery of the right side of the blind hole are provided with a second coarsening treatment layer 8 and a second conductive layer 7 in turn from left to right, the second conducting layer 7 is formed by metal spraying on the second coarsening treatment layer 8, because the groove 2 is arranged on the right side surface of the shell 1, the groove 2 penetrates through the shell 1 leftwards, and a blind hole is arranged on the groove 2, if the shell 1 is thin enough, the groove 2 does not need to be preset or the groove 2 needs to be processed subsequently when the right side surface of the shell 1 is processed and used, compared with the prior art, when the frustum-shaped blind hole with a small left and a big right formed by punching the shell 1 and the first conducting layer 4 is sprayed, the first conducting layer 4 is used as a support bottom, metal particles or powder can easily reach the surface of the first conducting layer 4 in the blind hole and finally form the second conducting layer 7 attached to the shell 1 on the inner wall of the first conducting layer 4, the inner wall of the blind hole and the periphery of the blind hole, the frustum-shaped blind hole with a small left and a big right is convenient for the metal particles or powder to be gathered and attached to the first conducting layer 4 and the blind hole, and is easier to be processed in the processing process, the second conductive layer 7 is composed of metal particles or powder coating, the higher the thickness is, the worse the conductive performance is, the larger the probability of occurrence of defects is, compared with the thickness of a sprayed layer formed by metal spraying in a reserved hole in the prior art, the second conductive layer 7 of the invention has small thickness and low defect rate, the first conductive layer 4 is formed by metal spraying on the first roughening treatment layer 3, the first conductive layer 4 and the shell 1 around the first conductive layer 4 are polished to form a polishing layer 5, the polishing layer 5 is provided with the paint spraying layer 6, the polishing layer 5 and the paint spraying layer 6, the color sense on the shell 1 is increased, the performance is enhanced, the electronic product can be effectively protected, various reliability tests are ensured, and the antenna is arranged on the left side surface of the shell 1 (namely, the outside of the electronic product such as a mobile phone) to reduce the interference of the main body inside the electronic product such as the mobile phone, the signal is stronger, and the anti-interference ability is strong.
The first conducting layer 4 and the second conducting layer 7 are both formed by one or more layers of metal particles or powder coatings, the right side surface of the shell is provided with a contact structure 9, the contact structure 9 is arranged on the second conducting layer 7, the surface of the contact structure is formed by a phosphor bronze material or a wear-resistant corrosion-resistant alloy material, one or more contact structures 9 are arranged, in order to protect the internal communication structure (the second conducting layer 7), another paint spraying layer can be additionally arranged on the contact structures 9 of the second conducting layer 7 and the second conducting layer 7, the paint spraying layer does not need to be polished or required to be required in appearance, can protect the second conducting layer 7 and the contact structures 9, after the paint spraying layer is additionally arranged on the right sides of the second conducting layer 7 and the contact structures 9, the contact structures 9 are exposed by laser, the edges around the contacts are not exposed, the use of the contact structures 9 is not influenced, and the contact structures 9 and the second conducting layer 7 are also protected, other protective measures can also be adopted in the specific implementation process.
As shown in fig. 6, another object of the present invention is to provide a method for manufacturing a novel antenna structure, which includes the following steps:
s1, taking a shell 1 with a right groove 2 on the right side, shielding partial areas on the left side and the right side of the shell 1 to expose areas needing to be sprayed on the left side and the right side of the shell 1, namely shielding the areas needing no metal spraying and exposing the areas needing metal spraying, wherein the shell 1 can be fixed on a shielding jig in a shielding treatment mode, the shielding jig covers the areas, needing no metal spraying, of the shell 1 to expose the areas needing metal spraying, the shell 1 can be wrapped by a thin-layer material in the shielding treatment mode, and the thin-layer material corresponding to the areas needing metal spraying treatment is removed through equipment such as a laser engraving machine and the like, so that the areas needing metal spraying are exposed;
s2, processing a corresponding antenna pattern groove position in an area needing metal spraying on the left side surface of the shell 1;
s3, performing surface treatment on the antenna pattern groove to form the first roughened layer 3;
s4, spraying metal particles or powder on the first roughened layer 3 by a metal spraying technique to form the first conductive layer 4, ensuring that the height of the first conductive layer 4 is higher than the height of the grooves of the antenna pattern, wherein the metal spraying technique includes thermal spraying and cold spraying, wherein the thermal spraying is a technique of heating a powdered or filamentous metal or nonmetal material to a molten or semi-molten state by using a certain heat source (such as an electric arc, plasma spraying or combustion flame, etc.), and then spraying the powdered or filamentous metal or nonmetal material onto the surface of the processed substrate at a certain speed by using a gas to be informed to deposit and form a surface coating with various functions; cold spraying means that metal particles are not melted in the whole spraying process, compressed air is utilized to accelerate the metal particles, the metal particles are flattened on the surface of a substrate and are firmly attached, in the embodiment, a conductive material is selected as a material of a coating layer, and a conductive layer is formed by spraying, in addition, different mixed materials can be further included in the material of the coating layer, so that the coating layer has one or more performances in the aspects of wear resistance, corrosion resistance, oxidation resistance, heat conduction and the like while obtaining the conductive performance;
s5, punching holes through the shell 1 and the first coarsening layer 3 on the left side surface of the shell 1 leftwards on the left end of the groove 2 of the shell 1 by using a marking machine, forming frustum-shaped blind holes with left small and right large openings rightwards with the right side surface of the first conductive layer 4, and simultaneously performing surface treatment on the inner wall of the blind hole, the right side of the connection contact between the first coarsening layer 3 and the blind hole and the shell 1 at the periphery of the right side of the blind hole to form the second coarsening layer 8;
s6, performing metal spraying on the second roughened layer 8 to form a second conductive layer 7, where the second conductive layer 7 may be formed by metal spraying or by LDS technology or PDS technology, specifically, the LDS technology is a laser direct structuring technology, that is, a laser etching technology is used to directly plate a metal antenna on a support, more specifically, a laser etching machine is used to form the second conductive layer 7 on the second roughened layer 8, and the PDS technology is a technology that a conductive material is coated on the surface of a workpiece by a planar printing process, and then a copper plating or multi-layer silver paste printing mode is used to form a conductive three-dimensional circuit, more specifically, the second conductive layer 7 is formed by copper plating or multi-layer silver paste printing on the second roughened layer 8;
s7, removing the masking in step S1;
s8, polishing the first conductive layer 4 and the shell 1 around the first conductive layer 4 by using a polishing machine until the first conductive layer 4 and the shell 1 around the first conductive layer 4 are on the same plane without concave-convex feeling, and forming the corresponding polishing layer 5, so that there is no height difference between the left side surface of the first conductive layer 4 and the left side surface of the shell 1 around the first conductive layer 4;
and S9, performing paint spraying treatment on the polishing layer 5 by using paint spraying equipment to form the paint spraying layer 6.
In another embodiment, a blind hole may be reserved on the housing 1 (the blind hole is in the housing, and the right side of the blind hole is on the groove), then a first roughened layer 3, a first conductive layer 4, a polishing layer 5, and a paint spraying layer 6 are sequentially disposed in the middle of the left side surface of the housing 1 from right to left, and then the blind hole reserved on the left side portion of the groove 2 is passed through the housing 1 and the first roughened layer 3 to the left to be reworked to form a new frustum-shaped blind hole with a small left and a large right, that is, the blind hole is reserved on the housing 1 originally, after the first roughened layer 3 and the first conductive layer 4 are formed on the left side surface of the housing 1, the blind hole is reworked, and the blind hole is extended through the housing 1 and the first roughened layer 3 to the left to form a new frustum-shaped blind hole with a small left and a large right.
The depth value of the antenna pattern groove in the step S2 is 0.01 to 0.1mm, the antenna pattern groove may be formed by laser engraving or housing 1 reservation or processed by a CNC lathe, and when the depth value of the antenna pattern groove is 0.01 to 0.1mm, the antenna pattern groove is the optimal value of the antenna pattern groove, so that metal particles or powder is conveniently sprayed on the antenna pattern groove, and the formed antenna structure has better fixity, which is not limited by the antenna pattern of the present invention.
When the diameter of the metal particles in the step S4 and the step S6 is 2 to 100 μm, and the diameter of the metal particles is 2 to 100 μm, the uniformity of metal spraying is the best, and the performance of the formed first conductive layer 4 and the second conductive layer 7 is the best.
In step S4 and step S6, one or more layers of metal particles or powder are sprayed, the thicknesses of the first conductive layer 4 and the second conductive layer 7 are both 0.02-0.5mm, and compared with other processes, the thicknesses of the first conductive layer 4 and the second conductive layer 7 are larger, which is beneficial for polishing the antenna structure, specifically, the one or more layers of metal particles or powder are respectively one or more of a zinc coating, a zinc alloy coating, a tin alloy coating, an aluminum alloy coating, a copper coating or a copper alloy coating to form one or more layers.
The thickness of the paint spraying layer 6 is 8-150 μm, when the thickness of the paint spraying layer 6 is 8-150 μm, the paint spraying effect of the paint spraying layer 6 is optimal, and the paint spraying layer 6 can be formed by spraying through a three-coating three-baking process or a five-coating five-baking process, which is the prior art, and the specific process is not described in detail.
As shown in fig. 4 and 5, in the case 1 according to another embodiment of the present invention, the middle portion of the left side surface of the case 1 is sequentially provided with the first roughened layer 3, the first conductive layer 4, the polishing layer 5 and the paint spraying layer 6 from right to left, the middle portion of the right side surface of the case 1 penetrates the case 1 and the first roughened layer 3 leftward to be provided with the frustum-shaped blind holes with smaller left and larger right, the first roughened layer 3 is provided with the corresponding pattern groove positions, the pattern groove positions have a certain depth and are generally lower than the left side surface of the case 1 by 0.01-0.1mm, the pattern groove positions are filled by the metal spraying technique, so as to form the corresponding first conductive layer 4, the first conductive layer 4 can form the connection circuit structures such as the connection line, the antenna and the like on the case 1, the connection circuit structure formed by the first conductive layer 4 is not specifically limited, the inner wall of the blind hole, the connection position of the first roughened layer 3 and the blind hole, and the case 1 around the right side and the blind hole are sequentially provided with the first roughened layer from left to right The second conducting layer 7 is formed by metal spraying on the second coarsening layer 8, and when the blind hole and the first conducting layer 4 form a frustum-shaped blind hole with a small left and a large right, the first conducting layer 4 is used as a support, metal particles or powder can easily reach the surface of the first conducting layer 4 in the blind hole and is attached to the first conducting layer 4, the inner wall of the blind hole and the shell on the periphery of the right side of the blind hole to finally form the second conducting layer 7, and the frustum-shaped blind hole with the small left and the large right is convenient for the metal particles or powder to be gathered and attached to the first conducting layer 4 and the blind hole, so that the processing is easier in the processing process; the first conducting layer 4 is formed by metal spraying on the first roughening treatment layer 3, the first conducting layer 4 and the shell 1 around the first conducting layer 4 are polished to form a polishing layer 5, the polishing layer 5 is provided with the paint spraying layer 6, the polishing layer 5 and the paint spraying layer 6, so that the color sense on the shell 1 is increased, the performance is enhanced, electronic products can be effectively protected, various reliability tests are ensured, the antenna is arranged on the left side surface of the shell 1 (namely the outside of the electronic products such as mobile phones) so as to reduce the interference of the main bodies in the electronic products such as mobile phones, signals are stronger, the anti-interference capability is strong, in the embodiment, no groove is formed on the right side surface of the shell, a rectangular shell is directly selected, and then a frustum-shaped blind hole with a small left and a large right is formed from the middle part of the right side surface of the shell 1 to the left through the shell and the first roughening treatment layer, because the frustum-shaped blind hole has the first conducting layer as a support base and the blind hole is in a shape with a small left and a large right, when metal spraying is carried out in the blind hole, metal particles or powder can be easily gathered and attached in the first conducting layer 4 and the blind hole.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. An antenna structure, characterized by: the novel metal spraying device comprises a shell, wherein a groove with a rightward opening is formed in the right side surface of the shell, a first roughening layer, a first conducting layer, a polishing layer and a paint spraying layer are sequentially arranged in the middle of the left side surface of the shell from right to left, the left end of the groove penetrates through the shell and the first roughening layer leftwards, a frustum-shaped blind hole with a small left opening and a large right opening is formed in the left end of the groove, a second roughening layer and a second conducting layer are sequentially arranged on the right side of the joint of the inner wall of the frustum-shaped blind hole, the first roughening layer and the frustum-shaped blind hole and the shell on the periphery of the right side of the frustum-shaped blind hole from left to right, and the second conducting layer is formed by metal spraying on the second roughening layer; the first conducting layer is formed by metal spraying on the first coarsening treatment layer, the first conducting layer and the shell around the first conducting layer are polished to form a polishing layer, and the polishing layer is provided with the paint spraying layer.
2. An antenna structure according to claim 1, characterized in that: the first conductive layer and the second conductive layer are both formed by one or more layers of metal particles or powder coatings.
3. A method of manufacturing an antenna structure according to claim 2, characterized by: the method comprises the following steps:
s1, taking a shell with a right groove opening on the right side surface, and shielding partial areas on the left side and the right side of the shell to expose areas needing spraying on the left side surface and the right side surface of the shell;
s2, processing a corresponding antenna pattern groove position in an area, needing metal spraying, on the left side surface of the shell;
s3, performing surface treatment on the antenna pattern groove to form the first coarsening treatment layer;
s4, spraying metal particles or powder on the first coarsening treatment layer through a metal spraying technology to form the first conductive layer;
s5, punching a hole through the shell and the first roughening layer on the left side surface of the shell leftwards on the left end of the groove of the shell by using a marking machine, forming a frustum-shaped blind hole with a left small opening and a right large opening with the right side surface of the first conducting layer, and simultaneously performing surface treatment on the inner wall of the frustum-shaped blind hole, the right side of the first roughening layer in contact with the frustum-shaped blind hole and the shell on the periphery of the right side of the frustum-shaped blind hole to form the second roughening layer;
s6, performing metal spraying on the second coarsening layer to form a second conductive layer;
s7, removing the masking in step S1;
s8, polishing the first conducting layer and the first conducting layer peripheral shell by using a polishing machine until the first conducting layer and the first conducting layer peripheral shell are on the same plane to form a corresponding polishing layer;
and S9, performing paint spraying treatment on the polishing layer by using paint spraying equipment to form the paint spraying layer.
4. A method of manufacturing an antenna structure according to claim 3, characterized in that: the depth value of the antenna pattern groove in the step S2 is 0.01-0.1 mm.
5. A method of manufacturing an antenna structure according to claim 3, characterized in that: the diameter of the metal particles in the step S4 and the step S6 is 2-100 μm.
6. A method of manufacturing an antenna structure according to claim 3, characterized in that: and in the step S4 and the step S6, one or more layers of metal particles or powder are sprayed, and the thickness of the formed first conductive layer and the second conductive layer is 0.02-0.5 mm.
7. A method of manufacturing an antenna structure according to claim 3, characterized in that: the thickness of the paint spraying layer is 8-150 mu m.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010660525.3A CN111769354B (en) | 2020-07-10 | 2020-07-10 | Antenna structure and preparation method |
| PCT/CN2020/130842 WO2022007306A1 (en) | 2020-07-10 | 2020-11-23 | New antenna structure and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010660525.3A CN111769354B (en) | 2020-07-10 | 2020-07-10 | Antenna structure and preparation method |
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| CN111769354A CN111769354A (en) | 2020-10-13 |
| CN111769354B true CN111769354B (en) | 2021-10-08 |
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| CN113725593A (en) * | 2020-05-26 | 2021-11-30 | 中兴通讯股份有限公司 | Terminal device and antenna manufacturing method of terminal device |
| CN111769354B (en) * | 2020-07-10 | 2021-10-08 | 东莞美景科技有限公司 | Antenna structure and preparation method |
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| JP2009135587A (en) * | 2007-11-28 | 2009-06-18 | Toshiba Corp | Electronic device |
| TWI350027B (en) * | 2007-12-31 | 2011-10-01 | Htc Corp | Electronic apparatus with hidden antenna |
| US20100033400A1 (en) * | 2008-08-05 | 2010-02-11 | Daniel Chang | Spray non-contact cutting type antenna and its fabrication method |
| KR20130001062U (en) * | 2011-08-03 | 2013-02-14 | 갈트로닉스 코포레이션 리미티드 | Mobile communication device case including filled through-hole |
| CN105470633B (en) * | 2014-09-11 | 2019-04-05 | 深圳市六二九科技有限公司 | 2G, 3G, 4G integrate multifrequency antenna and wireless communication terminal |
| EP3430685B8 (en) * | 2016-03-16 | 2020-06-17 | Huber+Suhner Ag | Adapter with waveguide channels and electromagnetic band gap structures |
| JP6627646B2 (en) * | 2016-05-19 | 2020-01-08 | 富士通株式会社 | Wireless communication module and method for manufacturing wireless communication module |
| CN209964380U (en) * | 2018-10-26 | 2020-01-17 | 奥特斯(中国)有限公司 | Part carrier with laser via hole |
| CN110416695A (en) * | 2019-08-13 | 2019-11-05 | 东莞美景科技有限公司 | Antenna structure of metal spraying and preparation method thereof |
| CN111769354B (en) * | 2020-07-10 | 2021-10-08 | 东莞美景科技有限公司 | Antenna structure and preparation method |
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| CN111769354A (en) | 2020-10-13 |
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