Antenna structure and electronic structure

Abstract

The utility model relates to an antenna structure and an electronic structure. The antenna structure comprises a support member, a metal layer and an external member. The supporting piece is annular, the first surface and the second surface of the supporting piece are opposite, at least one face is provided with a film coating area, and the metal layer is prepared in the film coating area. One end of the external member is connected with the metal layer, and the other end is connected with external equipment. The coil is directly constructed by plating the metal layer on the surface of the supporting piece, the antenna can be prepared according to the shape of the supporting piece, a three-dimensional antenna can be formed, traditional plane limitation is broken through, and flexibility is greatly improved. Meanwhile, FPC or PCB manufacturing is not needed, corresponding material and assembly cost is reduced, production cost is effectively reduced, and market diversification requirements can be better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit metal plate, and in particular to an antenna structure and an electronic structure. BACKGROUND

[0002] The NFC antenna technology mainly relies on arranging a metal coil on an FPC (flexible printed circuit board) or a PCB (printed circuit board) to realize signal transmission function. However, this traditional process has obvious limitations. On the one hand, the metal coil on the FPC or the PCB can only construct a planar coil structure, which greatly limits the improvement of the NFC antenna performance, and it is difficult to meet the growing demand for efficient transmission. On the other hand, the separate FPC or PCB itself has a high cost, and in the production and assembly process, it also needs to be integrated with the structural shell of the device, further increasing the overall manufacturing cost and process complexity. CONTENT OF THE UTILITY MODEL

[0003] To solve the above problems, the present application provides an antenna structure, comprising:

[0004] a support piece in a ring structure with the head and tail connected, the support piece comprising a first surface and a second surface opposite in the thickness direction; a plating film area is arranged on the first surface and / or the second surface;

[0005] a metal layer formed in the plating film area;

[0006] an external connecting piece, one end of the external connecting piece is electrically connected with the metal layer, and the other end of the external connecting piece is electrically connected with an external device.

[0007] In one of the embodiments, the metal layer comprises a first external connecting end and a second external connecting end, the external connecting piece comprises a first sub-external connecting piece and a second sub-external connecting piece, the first sub-external connecting piece is used to connect the first external connecting end of the metal layer and the external device, and the second sub-external connecting piece is used to connect the second external connecting end and the external device.

[0008] In one of the embodiments, the number of the metal layers is one, and the metal layer is arranged on the first surface or the second surface; or,

[0009] the number of the metal layers is multiple, and the metal layers are arranged on the first surface and the second surface respectively, and the different metal layers are arranged in insulation; the first external connecting end of each metal layer is electrically connected with the external device through the first sub-external connecting piece, and the second external connecting end of each metal layer is electrically connected with the external device through the second sub-external connecting piece.

[0010] In one of the embodiments, the number of the metal layers is multiple, the metal layers on the first surface are referred to as first coils, and the metal layers on the second surface are referred to as second coils; the first coils and the second coils are connected in series to form an open first coil winding, and the external connecting member includes a first sub-external connecting member and a second sub-external connecting member; wherein,

[0011] One end of the first coil winding is a first external connecting end, and the other end is a second external connecting end; the first external connecting end is electrically connected to an external device through the first sub-external connecting member, and the second external connecting end is electrically connected to the external device through the second sub-external connecting member.

[0012] In one of the embodiments, the first coil includes a first end and a second end, and the second coil includes a third end and a fourth end.

[0013] The first end of the first coil and the third end of the second coil are arranged correspondingly in the thickness direction of the support member.

[0014] The first end and the third end are electrically connected to form the first coil winding; the second end of the first coil serves as the first external connecting end, and the fourth end of the second coil serves as the second external connecting end.

[0015] In one of the embodiments, a first connecting via hole is formed on the support member, and the first connecting via hole is used to connect the first end of the first coil and the third end of the second coil.

[0016] In one of the embodiments, a connecting metal part is arranged in the connecting via hole, one end of the connecting metal part is connected to the first end of the first coil, and the other end of the connecting metal part is connected to the third end of the second coil.

[0017] In one of the embodiments, the number of the metal layers is multiple, the metal layers on the first surface are referred to as first coils, and the metal layers on the second surface are referred to as second coils; the first coils and the second coils are connected in parallel to form a closed second coil winding; the external connecting member includes a first sub-external connecting member and a second sub-external connecting member; wherein,

[0018] The second coil winding includes a first external connecting point and a second external connecting point; the first external connecting point is electrically connected to an external device through the first sub-external connecting member, and the second external connecting point is electrically connected to the external device through the second sub-external connecting member.

[0019] In one of the embodiments, the first coil includes a first end and a second end, and the second coil includes a third end and a fourth end.

[0020] The first end of the first coil and the third end of the second coil are arranged correspondingly in the thickness direction of the support, and the second end of the first coil and the fourth end of the second coil are arranged correspondingly in the thickness direction of the support;

[0021] The first end of the first coil and the third end of the second coil are electrically connected, and the second end of the first coil and the fourth end of the second coil are electrically connected to form a second coil winding, the first end of the first coil serving as the first external connection end, and the second end of the first coil serving as the second external connection end.

[0022] In one of the embodiments, the support is provided with a first connecting via hole and a second connecting via hole, the first connecting via hole being used for connecting the first end of the first coil and the third end of the second coil, and the second connecting via hole being used for connecting the second end of the first coil and the fourth end of the second coil.

[0023] In one of the embodiments, the first connecting via hole is provided with a first connecting metal part, one end of the first connecting metal part being connected to the first end of the first coil, and the other end of the first connecting metal part being connected to the third end of the second coil.

[0024] The second connecting via hole is provided with a second connecting metal part, one end of the second connecting metal part being connected to the second end of the first coil, and the other end of the second connecting metal part being connected to the fourth end of the second coil.

[0025] In one of the embodiments, the first surface and / or the second surface of the support is provided with a protruding part or a recessed part, the plating film region being at least partially located on the upper surface of the protruding part; and / or

[0026] The plating film region is at least partially located on the inner wall of the recessed part.

[0027] In one of the embodiments, the height of the protruding part in the thickness direction of the support is the same as the depth of the recessed part in the thickness direction of the support.

[0028] In one of the embodiments, when the first surface and the second surface are both provided with the protruding parts, the protruding parts on the first surface and the protruding parts on the second surface are arranged one-to-one correspondingly or staggered; or,

[0029] When the first surface and the second surface are both provided with the recessed parts, the recessed parts on the first surface and the recessed parts on the second surface are arranged one-to-one correspondingly or staggered; or,

[0030] When one of the protrusions or the recesses is arranged on the first surface and the other of the protrusions or the recesses is arranged on the second surface, the protrusions and the recesses are arranged one by one or are staggered.

[0031] In one of the embodiments, the height of the protrusion in the thickness direction of the support and / or the depth of the recess in the thickness direction of the support is greater than or equal to 0.1 mm and less than or equal to 500 mm.

[0032] In one of the embodiments, the metal layer comprises an inner ring metal trace, an outer ring metal trace and a connecting metal trace, two ends of the connecting metal trace being connected to the inner ring metal trace and the outer ring metal trace respectively.

[0033] One end of the inner ring metal trace close to the connecting metal trace is formed into the first outer connecting end after winding around the support at least one time, and one end of the outer ring metal trace close to the connecting metal trace is formed into the second outer connecting end after winding around the support at least one time.

[0034] The diameter of the outer ring metal trace is greater than the diameter of the inner ring metal trace.

[0035] In one of the embodiments, a third connecting via hole is further arranged on the support, the third connecting via hole being located in the orthographic projection of the connecting metal trace on the support, and being used to connect the connecting metal trace on the first surface and the connecting metal trace on the second surface.

[0036] The application further provides an electronic structure comprising a shell and the antenna structure according to any one of the above embodiments.

[0037] The technical scheme provided by the embodiments of the application can have the following beneficial effects:

[0038] As can be seen from the above embodiments, the antenna structure of the application comprises a support, a metal layer and an outer connecting piece. The support is annular, the first surface and the second surface of which are opposite, and at least one of the surfaces has a plating film area, and the metal layer is prepared in the plating film area. One end of the outer connecting piece is connected to the metal layer, and the other end is connected to an external device. The application directly constructs a coil by plating a metal layer on the surface of the support, can prepare an antenna according to the shape of the support, can form a three-dimensional antenna, and can break through the limitation of traditional plane, and the flexibility is greatly improved. At the same time, since FPC or PCB is not needed to be made, the corresponding material and assembly cost is reduced, the production cost is effectively reduced, and the diversified market demand can be better met.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A structural schematic diagram of an antenna structure provided in an embodiment of the present application in a view.

[0042] Figure 2 A structural schematic diagram of an antenna structure provided in an embodiment of the present application in another view.

[0043] Figure 3 A partial structural schematic diagram of an antenna structure provided in an embodiment of the present application in a view.

[0044] Figure 4 A structural schematic diagram of an antenna structure provided in an embodiment of the present application in a view. Figure 3 A sectional structural schematic diagram of the antenna structure in the direction of AB.

[0045] Figure 5 A structural schematic diagram of an antenna structure provided in an embodiment of the present application in a view.

[0046] Reference signs:

[0047] 10, support; 10a, first surface; 10b, second surface; 101, first connection via; 102, second connection via; 103, third connection via; 20, metal layer; 201, inner ring metal trace; 202, connection metal trace; 203, outer ring metal trace; 21, first coil; 22, second coil; 30, external element; 301, first sub-external element; 302, second sub-external element. DETAILED DESCRIPTION

[0048] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, like reference numerals refer to like elements throughout the description. It will be readily understood that the components of the described embodiments, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Nonetheless, the following described representative embodiments are discussed as exemplary of the aspects as defined herein. As such, similar elements and components such as the structure of the described embodiments, unless otherwise specified, are identical with like elements performing similar functions being referred to by like numerals.

[0049] As described in the background, the traditional NFC antenna is usually implemented by FPC or metal coil on PCB, however, these two ways can only build a planar coil, which causes certain limitations to the performance of NFC antenna. Moreover, the separate FPC or PCB itself has a high electronic material cost, and in the production and assembly process, it also needs to be assembled to the structural shell, which further increases the overall manufacturing cost and assembly complexity of the device.

[0050] Based on this, the present application provides an antenna structure for attaching to a shell. Referring to Figures 1 to 4 , it includes a support 10, a metal layer 20 and an external device 30. The support 10 is a ring structure with the head and tail connected. The support 10 includes a first surface 10a and a second surface 10b opposite in the thickness direction. The first surface 10a and / or the second surface 10b is provided with a plating area. The metal layer 20 is formed on the plating area. One end of the external device 30 is electrically connected to the metal layer 20, and the other end of the external device 30 is electrically connected to an external device.

[0051] It should be noted that the ring structure designed by the support 10 has various forms, and is not limited to the traditional circular ring form. In addition to the standard circular ring, the ring structure can also be in the form of a rectangular ring (including right angles or rounded corners), an elliptical ring (with different long and short axes), and a polygonal ring (such as a triangle, a hexagon), etc. The design of the edge profile of the ring structure is not limited. It can be set to a wavy edge, a gear-like shape, etc.

[0052] It should also be noted that the external device can be one or more of an NFC controller, a power management module, a signal processing unit, etc. By connecting the antenna structure to these external devices, a complete NFC control module can be built.

[0053] The application realizes the antenna function by plating the metal layer 20 on at least one surface of the support 10. Specifically, the physical vapor deposition (PVD) technology is adopted to vaporize the metal target in a vacuum environment to form metal vapor, and the metal atoms have a certain free path during flight, and finally uniformly deposit on the surface of the plastic shell to form a thin and uniform metal layer 20.

[0054] Firstly, since the plating film technology is adopted, the metal layer 20 can closely adhere to various shapes of the support 10, thereby realizing the three-dimensional arrangement and design of the antenna structure. This flexible arrangement can effectively improve the performance of the antenna and enhance the ability of signal reception and transmission. For example, the support 10 is configured as a plastic shell. The plastic shell can be flexibly designed in shape to realize the three-dimensional design of the antenna structure.

[0055] Secondly, the NFC coil is directly plated on the support 10, which eliminates the PCB or FPC material in the traditional scheme and also eliminates the need for additional assembly process. This not only reduces the material procurement cost, but also reduces the labor and time input of the assembly link, thereby effectively reducing the overall production cost. At the same time, the simplified manufacturing process improves the production efficiency and helps to improve the market competitiveness of the product.

[0056] In some embodiments, the metal layer 20 includes a first external connection end and a second external connection end, the external connecting piece 30 includes a first sub-external connecting piece 301 and a second sub-external connecting piece 302, the first sub-external connecting piece 301 is used to connect the first external connection end of the metal layer 20 and an external device, and the second sub-external connecting piece 302 is used to connect the second external connection end and the external device.

[0057] It should be noted that, with reference to Figure 1 and Figure 2 , the prepared metal layer 20 is the NFC coil. In the present application, the metal layer 20 prepared on the first surface 10a of the support 10 is referred to as the first coil 21, and the metal layer 20 prepared on the second surface 10b of the support 10 is referred to as the second coil 22. The following content is based on this reference, and the naming rule will not be described in detail hereinafter.

[0058] In one embodiment, the number of metal layers 20 is one, which is only arranged on the first surface 10a or the second surface 10b. That is, it can be understood that only the first coil 21 is prepared on the support 10, or only the second coil 22 is prepared on the support 10.

[0059] When there is only one coil on the support 10, both ends of the coil are the first external connection end and the second external connection end, which are respectively connected to the external device through the first sub-external connecting piece 301 and the second sub-external connecting piece 302, thereby realizing the complete function of the antenna structure.

[0060] In one embodiment, the number of metal layers 20 is multiple, and the metal layers 20 are insulated from each other. The metal layers 20 are respectively prepared on the first surface 10a and the second surface 10b. It can also be understood that the support 10 is provided with the first coil 21 and the second coil 22.

[0061] In the present embodiment, the first coil 21 and the second coil 22 are insulated from each other, that is, the first coil 21 and the second coil 22 are respectively and independently electrically connected to the external device through the external connecting piece 30.

[0062] Specifically, the first external connecting end of the first coil 21 is in communication with the external device through the first sub-external connecting piece 301, and the second external connecting end is in communication with the external device through the second sub-external connecting piece 302. The first coil 21, the two sub-external connecting pieces, and the external device are in communication with each other to form a complete circuit loop. At the same time, the first external connecting end of the second coil 22 is in communication with the external device through another first sub-external connecting piece 301, and the second external connecting end is in communication with the external device through another second sub-external connecting piece 302. The second coil 22, the two sub-external connecting pieces, and the external device are in communication with each other to form a complete circuit loop.

[0063] In some embodiments, the number of metal layers 20 is multiple, and the metal layers 20 are electrically connected to each other.

[0064] Specifically, the first coil 21 includes a first end and a second end, and the second coil 22 includes a third end and a fourth end. The first end of the first coil 21 and the third end of the second coil 22 are correspondingly arranged in the thickness direction of the support 10, and the second end of the first coil 21 and the fourth end of the second coil 22 are correspondingly arranged in the thickness direction of the support 10.

[0065] It is worth noting that the naming of the end in the present application is only for the convenience of understanding and reading, and is not limited to its function.

[0066] In one embodiment, the metal layers 20 are electrically connected in series. That is, the first end and the third end are electrically connected, or the second end and the fourth end are electrically connected, so that the first coil 21 and the second coil 22 are connected in series to form an open first coil winding.

[0067] In the present embodiment, the first coil 21 and the second coil 22 are connected in series to form a complete electrical loop with the external device. This arrangement can enhance signal strength, improve frequency stability, optimize circuit design, save space, and has flexibility and scalability, and can adapt to a variety of different devices and application scenarios.

[0068] Specifically, one of the remaining unconnected ends is the first external connection end, and the other is the second external connection end. The first external connection end is electrically connected to the external device through the first sub-external connection piece 301, and the second external connection end is electrically connected to the external device through the second sub-external connection piece 302.

[0069] Further, referring to Figure 5 , the support 10 is provided with a first connection via hole 101 for connecting the first end of the first coil 21 and the third end of the second coil 22.

[0070] Further, the first connection via hole 101 is provided with a connecting metal part, one end of the connecting metal part is connected to the first end of the first coil 21, and the other end of the connecting metal part is connected to the third end of the second coil 22.

[0071] Specifically, the connecting metal part can be a conductive structure formed by electroplating, sputtering or other metal deposition process. Such a design not only enhances the reliability of the connection, but also ensures good electrical conductivity. In the manufacturing process, it can be completed by conventional plating and etching process without additional complex assembly steps. It should be noted that the connecting metal part can be formed synchronously in the process of electroplating the first coil 21 and / or the second coil 22, which is selected according to actual needs.

[0072] In one embodiment, the metal layers 20 are electrically connected in parallel. That is, the first end and the third end are electrically connected, and at the same time, the second end and the fourth end are also electrically connected, so that the first coil 21 and the second coil 22 are connected in parallel to form a closed second coil winding.

[0073] In this embodiment, the first coil 21 and the second coil 22 are connected in parallel to form a complete electrical circuit with the external device. Such a design can effectively increase the bandwidth and efficiency of the antenna, while reducing signal loss.

[0074] Specifically, the second coil winding includes a first external connection point and a second external connection point, and the two external connection points are electrically connected to the external device through the first sub-external connection piece 301 and the second sub-external connection piece 302 respectively. It should be noted that the first external connection point and the second external connection point can be flexibly configured as any two of the first end, the second end, the third end and the fourth end. This flexible configuration can meet different circuit design needs and provide greater freedom for the layout and optimization of the antenna structure.

[0075] Further, referring to Figure 4 , the support 10 is provided with a first connection via hole 101 and a second connection via hole 102, the first connection via hole 101 is used to connect the first end of the first coil 21 and the third end of the second coil 22, and the second connection via hole 102 is used to connect the second end of the first coil 21 and the fourth end of the second coil 22.

[0076] Further, the first connecting via hole 101 is provided with a first connecting metal part (not shown in the figure), one end of the first connecting metal part is connected to the first end of the first coil 21, and the other end of the first connecting metal part is connected to the third end of the second coil 22. The second connecting via hole 102 is provided with a second connecting metal part (not shown in the figure), one end of the second connecting metal part is connected to the second end of the first coil 21, and the other end of the second connecting metal part is connected to the fourth end of the second coil 22. By this way of providing connecting metal parts in the via holes, not only the reliability of the connection is ensured, but also the antenna structure is more compact, which provides convenience for realizing complex circuit layout.

[0077] In some embodiments, the first surface 10a of the support 10 is provided with a protrusion or a recess, and the plating area is at least partially located on the upper surface of the protrusion or the inner wall of the recess.

[0078] In some embodiments, the second surface 10b is provided with a protrusion or a recess, and the plating area is at least partially located on the upper surface of the protrusion or the inner wall of the recess.

[0079] Firstly, such a setting has strong flexibility. By customizing the plating area on different positions and shapes of the support 10, greater design freedom is provided, which can meet the requirements of different application scenarios for antenna shape and performance.

[0080] Secondly, such a setting can improve the performance of the antenna. By forming the plating area on the protrusion or the recess, the distribution and shape of the metal layer 20 can be accurately controlled, and the inductance and capacitance parameters of the antenna can be optimized, thereby improving the performance of the antenna, such as enhancing the signal receiving and transmitting capability.

[0081] Finally, such a setting can increase the adhesion of the metal layer 20. The protrusion and the recess can provide greater surface area and more complex geometry, so that the metal layer 20 can be better attached to the support 10 during the deposition process, reducing the problem of metal layer 20 peeling or cracking caused by mechanical stress or thermal stress.

[0082] In some embodiments, the profile of the protrusion is a smoothly transitioned structure, which is similar to a sine (sin) or cosine (cos) function curve, or similar to a partial sine (sin) or cosine (cos) function curve.

[0083] In one embodiment, when the first surface 10a and the second surface 10b are both provided with protrusions, the protrusions on the first surface 10a and the protrusions on the second surface 10b are arranged one-to-one or staggered.

[0084] In one embodiment, when the first surface 10a and the second surface 10b are both provided with recesses, the recesses on the first surface 10a and the recesses on the second surface 10b are arranged in one-to-one correspondence or staggered.

[0085] In one embodiment, when the first surface 10a is provided with one of the protrusions or recesses, and the second surface 10b is provided with the other one of the protrusions or recesses, the protrusions and recesses are arranged in one-to-one correspondence or staggered.

[0086] Specifically, the protrusions or recesses on the first surface 10a and the second surface 10b correspond to each other in position, forming a symmetrical structure. Such an arrangement can enhance the overall symmetry of the support 10, making the distribution of the metal layer 20 on the two surfaces more uniform, which helps to optimize the electrical performance of the antenna and improve the stability and consistency of signal transmission.

[0087] Specifically, the protrusions or recesses on the first surface 10a and the second surface 10b are staggered in position, forming a staggered structure. Such an arrangement can flexibly adjust the position of the protrusions according to specific design requirements to achieve specific inductance and capacitance parameters, while improving the space utilization to some extent and providing more layout space for the internal structure or other components of the support 10.

[0088] In some embodiments, the height of the protrusions in the thickness direction of the support 10 and the depth of the recesses in the thickness direction of the support 10 can or can not be the same.

[0089] In some embodiments, the height of the protrusions in the thickness direction of the support 10 and / or the depth of the recesses in the thickness direction of the support 10 is greater than or equal to 0.1 mm and less than or equal to 500 mm.

[0090] In some embodiments, referring to Figure 1 or Figure 2 the metal layer 20 includes an inner ring metal trace 201, an outer ring metal trace 203, and a connecting metal trace 202, both ends of the connecting metal trace 202 being connected to the inner ring metal trace 201 and the outer ring metal trace 203, respectively.

[0091] The end of the inner ring metal trace 201 close to the connecting metal trace 202 forms a first outer connection end after winding at least one turn around the support 10, and the end of the outer ring metal trace 203 close to the connecting metal trace 202 forms a second outer connection end after winding at least one turn around the support 10. The diameter of the outer ring metal trace 203 is greater than the diameter of the inner ring metal trace 201.

[0092] It can also be understood that the first coil 21 and the second coil 22 can be prepared as double-layer wiring. Such a double-layer wiring design can increase the effective length and area of the coil, improve the inductance and signal receiving and transmitting capacity of the antenna. At the same time, the double-layer wiring can shield external electromagnetic interference to a certain extent, enhance the anti-interference performance of the antenna, and ensure the stability of signal transmission.

[0093] In some embodiments, with reference to Figure 3 The third connection via hole 103 is located in the orthographic projection of the connection metal wiring 202 on the support 10, and is used to connect the connection metal wiring 202 located on the first surface 10a and the connection metal wiring 202 located on the second surface 10b. Further enhance the electrical performance and signal transmission capacity of the antenna structure. And through the third connection via hole 103, a more complex circuit layout can be realized, improving the flexibility and functionality of the antenna.

[0094] It should be particularly pointed out that any two of the first connection via hole 101, the second connection via hole 102 and the third connection via hole 103 can be selected to realize the parallel connection of the first coil 21 and the second coil 22.

[0095] The present application also provides an electronic structure comprising a shell and the antenna structure mentioned in any of the above embodiments. The antenna structure is designed by optimizing, that is, by changing the preparation method of the coil, to improve flexibility and effectively reduce production cost.

[0096] In the above detailed description, reference is made to the accompanying drawings, which show by way of illustration specific aspects in which the disclosure can be practiced. In this regard, directional terminology, such as "thickness", "upper", "lower", "top", "bottom", "inner", "outer", and the like, can be used with reference to the orientation of the described drawings. Because components of the described devices can be positioned in a number of different orientations, the directional terminology can be used for purposes of illustration and not limitation. It is to be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of the present disclosure. The following detailed description is, therefore, not to be taken in a limiting sense.

[0097] It should be understood that the features of various aspects of the present disclosure described herein can be combined with each other unless specifically noted otherwise. As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items; similarly, "at least one of" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0098] It should be understood that, unless specifically stated otherwise, the terms "engaged", "attached", "mounted", "connected", "linked", "fixed" and the like used in the embodiments of the present disclosure are to be interpreted broadly to include not only the direct connection or attachment of things described, but also indirect connections or attachments through an intervening medium, unless specifically stated otherwise. The specific meaning of the above terms in the present context will be apparent to those of ordinary skill in the art, and can be understood based on the specific circumstances.

[0099] Although terms such as "first", "second", and "third" can be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to the terms. Instead, the terms are merely used to distinguish one component, part, region, layer or section from another component, part, region, layer or section. Therefore, the first component, part, region, layer or section mentioned in the examples described herein can also be referred to as the second component, part, region, layer or section without departing from the teachings of the examples. In addition, the terms "first", "second" are used for description purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description herein, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless specifically and explicitly limited.

[0100] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not result in a contradiction, it should be considered within the scope of the present disclosure.

Claims

1. An antenna structure, characterized by The antenna structure is used for being attached to a shell, and the antenna structure comprises: a support in a ring structure with the first end connected to the tail, the support comprising a first surface and a second surface opposite in the thickness direction; a plating area is arranged on the first surface and / or the second surface; a metal layer formed in the plating area; an external connecting piece, one end of the external connecting piece being electrically connected to the metal layer, and the other end of the external connecting piece being electrically connected to an external device.

2. The antenna structure of claim 1, wherein, The metal layer comprises a first external connecting end and a second external connecting end, the external connecting piece comprises a first sub-external connecting piece and a second sub-external connecting piece, the first sub-external connecting piece is used for connecting the first external connecting end of the metal layer and the external device, and the second sub-external connecting piece is used for connecting the second external connecting end and the external device.

3. The antenna structure of claim 2, wherein, The number of the metal layers is one, and the metal layer is arranged on the first surface or the second surface; or The number of the metal layers is multiple, and the metal layers are arranged on the first surface and the second surface respectively, and the metal layers are insulated from each other; the first external connecting end of each metal layer is electrically connected to the external device through the first sub-external connecting piece, and the second external connecting end of each metal layer is electrically connected to the external device through the second sub-external connecting piece.

4. The antenna structure of claim 1, wherein, The number of the metal layers is multiple, the metal layers arranged on the first surface are referred to as first coils, and the metal layers arranged on the second surface are referred to as second coils; the first coils and the second coils are connected in series to form an open first coil winding, the external connecting piece comprises a first sub-external connecting piece and a second sub-external connecting piece; wherein one end of the first coil winding is a first external connecting end, and the other end is a second external connecting end, the first external connecting end is electrically connected to the external device through the first sub-external connecting piece, and the second external connecting end is electrically connected to the external device through the second sub-external connecting piece.

5. The antenna structure of claim 4, wherein, The first coil comprises a first end and a second end, and the second coil comprises a third end and a fourth end; The first end of the first coil and the third end of the second coil are arranged correspondingly in the thickness direction of the support; The first end and the third end are electrically connected to form the first coil winding; the second end of the first coil is the first external connecting end, and the fourth end of the second coil is the second external connecting end.

6. The antenna structure of claim 5, wherein, A first connecting via hole is arranged on the support, and the first connecting via hole is used for connecting the first end of the first coil and the third end of the second coil.

7. The antenna structure of claim 6, wherein, A connecting metal part is arranged in the connecting via hole, one end of the connecting metal part is connected to the first end of the first coil, and the other end of the connecting metal part is connected to the third end of the second coil.

8. The antenna structure of claim 1, wherein, The number of the metal layers is multiple, the metal layers arranged on the first surface are referred to as first coils, and the metal layers arranged on the second surface are referred to as second coils; the first coils and the second coils are connected in parallel to form a closed second coil winding; the external connecting piece comprises a first sub-external connecting piece and a second sub-external connecting piece; wherein The second coil winding comprises a first external connection point and a second external connection point, the first external connection point is electrically connected with an external device through the first sub-external connecting piece, and the second external connection point is electrically connected with an external device through the second sub-external connecting piece.

9. The antenna structure of claim 6, wherein, The first coil comprises a first end and a second end, and the second coil comprises a third end and a fourth end; The first end of the first coil and the third end of the second coil are arranged correspondingly in the thickness direction of the support, and the second end of the first coil and the fourth end of the second coil are arranged correspondingly in the thickness direction of the support; The first end of the first coil and the third end of the second coil are electrically connected, and the second end of the first coil and the fourth end of the second coil are electrically connected to form a second coil winding, the first end of the first coil serves as the first external connection end, and the second end of the first coil serves as the second external connection end.

10. The antenna structure of claim 9, wherein, The support is provided with a first connecting through hole and a second connecting through hole, the first connecting through hole is used for connecting the first end of the first coil and the third end of the second coil, and the second connecting through hole is used for connecting the second end of the first coil and the fourth end of the second coil.

11. The antenna structure of claim 10, wherein, The first connecting through hole is provided with a first connecting metal part, one end of the first connecting metal part is connected with the first end of the first coil, and the other end of the first connecting metal part is connected with the third end of the second coil. The second connecting through hole is provided with a second connecting metal part, one end of the second connecting metal part is connected with the second end of the first coil, and the other end of the second connecting metal part is connected with the fourth end of the second coil.

12. The antenna structure of claim 1, wherein, The first surface and / or the second surface of the support is provided with a protruding part or a recessed part, the plating film area is at least partially located on the upper surface of the protruding part; and / or The plating film area is at least partially located on the inner wall of the recessed part.

13. The antenna structure of claim 12, wherein, The height of the protruding part in the thickness direction of the support is the same as the depth of the recessed part in the thickness direction of the support.

14. The antenna structure of claim 12, wherein, When the first surface and the second surface are both provided with the protruding part, the protruding parts located on the first surface and the second surface are arranged one by one in correspondence or staggered arrangement; Or, When the first surface and the second surface are both provided with the recessed part, the recessed parts located on the first surface and the second surface are arranged one by one in correspondence or staggered arrangement; or, When the first surface is provided with one of the protruding part and the recessed part, and the second surface is provided with the other one of the protruding part and the recessed part, the protruding part and the recessed part are arranged one by one in correspondence or staggered arrangement.

15. The antenna structure of claim 12, wherein, The height of the protruding part in the thickness direction of the support and / or the depth of the recessed part in the thickness direction of the support is greater than or equal to 0.1 mm and less than or equal to 500 mm.

16. The antenna structure of claim 2, wherein, The metal layer comprises an inner ring metal trace, an outer ring metal trace and a connecting metal trace, and two ends of the connecting metal trace are connected with the inner ring metal trace and the outer ring metal trace respectively. An end of the inner loop metal trace close to the connecting metal trace is formed into the first outer connecting end after winding around the support at least one loop, and an end of the outer loop metal trace close to the connecting metal trace is formed into the second outer connecting end after winding around the support at least one loop; wherein The diameter of the outer loop metal trace is greater than the diameter of the inner loop metal trace.

17. The antenna structure of claim 16, wherein, A third connecting via hole is further formed on the support, and the third connecting via hole is located in the orthographic projection of the connecting metal trace on the support, and is used to connect the connecting metal trace on the first surface and the connecting metal trace on the second surface.

18. An electronic structure, comprising: The electronic structure comprises a housing and an antenna structure as claimed in any one of claims 1-17.

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