Antenna assembly and electronic equipment

Abstract

The invention relates to an antenna assembly and an electronic device, the antenna assembly comprises a metal piece and a circuit board, a first metal layer (11) of the circuit board (10) is connected with the metal piece through a connecting piece (4), and an antenna cavity is defined. According to the technical scheme, the antenna assembly provided by the invention is simple in structure, simple in manufacturing process, small in occupied space and low in cost.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to antenna components and electronic devices. Background Art

[0002] The use of full metal back panels in electronic devices (such as mobile phones) will shield the signals of the electronic devices, thereby causing a poor user experience. Currently, cavity antennas are usually provided on electronic devices to solve the signal shielding problem caused by full metal back panels.

[0003] In the related art, there are two main ways to set up the cavity antenna of electronic devices: one is to use a steel sheet or a flexible circuit board to construct the antenna radiation cavity; the other is to set a corresponding shielding cover on the circuit board to form the antenna radiation cavity. Both of these setting methods are complex, costly and occupy a large space. Summary of the invention

[0004] An object of the present disclosure is to provide an antenna assembly having a simple structure, a simple manufacturing process, a small occupied space and a low cost.

[0005] Another object of the present disclosure is to provide an electronic device that has low cost, compact structure and good consistency.

[0006] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, an antenna assembly is provided, comprising a metal member and a circuit board, wherein a first metal layer of the circuit board is connected to the metal member via a connecting member, and the first metal layer of the circuit board is enclosed to form an antenna cavity.

[0007] Optionally, the circuit board includes at least two metal layers, and a portion of the metal layer between the first metal layer and the metal member located in the antenna cavity is hollowed out.

[0008] Optionally, the connecting member connects the metal member and a second metal layer in the circuit board that is closest to the metal member, and the first metal layer is connected to the second metal layer through a through hole.

[0009] Optionally, the connecting member is a metal spring sheet, which is welded to a side of the second metal layer facing the metal member and abuts against the metal member.

[0010] Optionally, the number of the metal spring sheets is set to be multiple, and the multiple metal spring sheets are arranged at intervals on a side of the second metal layer facing the metal component.

[0011] Optionally, the antenna cavity is a rectangular cavity, and at least two adjacent sides of the rectangular cavity are formed by the connecting piece.

[0012] Optionally, at least one side of the rectangular cavity is formed by the metal piece.

[0013] According to a second aspect of the present disclosure, an electronic device is provided, comprising the above-mentioned antenna assembly.

[0014] Optionally, the metal component includes a metal frame and a metal back plate, and the metal frame is arranged around the edge of the metal back plate.

[0015] Through the above technical solution, in the antenna assembly provided by the present invention, the first metal layer of the circuit board, the metal part, and the connector connecting the metal part and the first metal layer together enclose an antenna cavity. Compared with the setting method of the cavity antenna in the prior art, the antenna assembly provided by the present invention does not need to add additional components when forming the antenna cavity, and has a simple structure, and can greatly reduce the cost and occupied space of the antenna assembly. In addition, the operation of enclosing the antenna cavity by the first metal layer, the metal part, and the connector is convenient and the process is simple, which is conducive to improving the assembly efficiency of the antenna assembly. Therefore, the antenna assembly provided by the present invention has a simple structure, a simple manufacturing process, a small occupied space, and a low cost.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the structure of an antenna assembly provided according to a specific embodiment of the present disclosure, wherein the metal frame and the metal back plate are removed to avoid interference;

[0019] Figure 2 is a schematic diagram of the structure of a circuit board in an antenna assembly provided according to a specific embodiment of the present disclosure;

[0020] Figure 3 is a cross-sectional view of a circuit board in an antenna assembly provided according to a specific embodiment of the present disclosure.

[0021] Description of Reference Numerals

[0022] 10-circuit board; 11-first metal layer; 12-second metal layer; 13-middle metal layer; 14-dielectric layer; 15-hollowed portion; 2-feeding point; 3-through hole; 4-connector; 41-metal spring; 20-excitation source. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the inside and outside of the contour of each component itself. The terms "first" and "second" are used to distinguish one element from another, and do not have order or importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements, and this disclosure will not repeat them.

[0025] According to a specific embodiment of the present disclosure, an antenna assembly is provided. Figures 1 to 3 An embodiment of the antenna assembly is shown. Figures 1 to 3 As shown, the antenna assembly may include a metal member and a circuit board 10 , wherein the first metal layer 11 of the circuit board 10 is connected to the metal member through a connector 4 , and the antenna cavity is enclosed therein.

[0026] Through the above technical solution, in the antenna assembly provided by the present invention, the first metal layer 11 of the circuit board 10, the metal part, and the connector 4 connecting the metal part and the first metal layer 11 together enclose an antenna cavity. Compared with the setting method of the cavity antenna in the prior art, the antenna assembly provided by the present invention does not need to add additional components when forming the antenna cavity, and has a simple structure, and can greatly reduce the cost and space occupied by the antenna assembly. In addition, the operation of enclosing the antenna cavity by the first metal layer 11, the metal part, and the connector 4 is convenient and the process is simple, which is conducive to improving the assembly efficiency of the antenna assembly. Therefore, the antenna assembly provided by the present invention has a simple structure, a simple manufacturing process, a small space occupation, and a low cost.

[0027] It should be noted that the antenna assembly can be applied in a variety of scenarios. For example, the antenna assembly can be applied to the electronic devices described below (such as mobile phones, computers, smart watches, etc.), wherein the circuit board 10 in the antenna assembly can be a circuit board of the electronic device, and the metal part in the antenna assembly can be a metal part of the electronic device (such as a metal casing), and the circuit board of the electronic device is connected to the metal part of the electronic device through the connector 4, and encloses the antenna cavity of the antenna assembly. In this regard, the present disclosure does not impose any restrictions. In addition, it should also be understood that the antenna cavity surrounded by the first metal layer 11, the metal part, and the connector 4 should have an opening to meet the radiation performance requirements of the antenna assembly, wherein, in some embodiments of the present disclosure, the opening can be formed between the first metal layer 11 and the metal part. In this regard, the present disclosure does not impose any restrictions here, and those skilled in the art can selectively design according to actual needs.

[0028] In the following, the present disclosure is only described by taking the application of the antenna assembly to a mobile phone as an example.

[0029] In the specific embodiments provided in the present disclosure, reference is made to Figure 2 and Figure 3 As shown, the circuit board 10 may include at least two metal layers, and the portion of the metal layer between the first metal layer 11 and the metal member located in the antenna cavity is hollowed out (i.e. Figures 1 to 3 In practical applications, the shape and space of the enclosed antenna cavity can be selectively designed according to the required operating frequency and radiation characteristics of the antenna component. Specifically, when the distance between the first metal layer 11 and the metal part is constant, the shape and size of the hollowed-out part 15 can be controlled to obtain the required shape and space of the antenna cavity. Correspondingly, the required shape and space of the antenna cavity can also be obtained by arranging the connector 4 between the first metal layer 11 and the metal part.

[0030] In some embodiments, the circuit board may include two stacked metal layers, namely, a first metal layer 11 and a second metal layer 12, wherein the second metal layer 12 is located between the first metal layer 11 and the metal member, and the second metal layer 12 is located in the hollowed-out portion of the antenna cavity (i.e. Figures 1 to 3 In some other embodiments, reference is made to Figure 3 As shown, the circuit board may include a plurality of metal layers stacked, that is, a first metal layer 11, a second metal layer 12, and at least one intermediate metal layer 13 located between the first metal layer 11 and the second metal layer 12, and the second metal layer 12 and the at least one intermediate metal layer 13 are located in the antenna cavity. In addition, it should be noted that, with reference to Figure 3 As shown, the circuit board 10 should also include a dielectric layer 14, wherein a dielectric layer 14 is disposed between any two adjacent metal layers to maintain insulation between the circuits and the metal layers. The materials of the dielectric layer 14 and the metal layer can be configured in a variety of ways, and the present disclosure does not impose any limitation thereto.

[0031] In the specific embodiments provided in the present disclosure, reference is made to Figure 3 As shown, the connector 4 connects the metal member and the second metal layer 12 closest to the metal member in the circuit board, and the first metal layer 11 is connected to the second metal layer 12 through the through hole 3, so as to electrically connect the first metal layer 11 and the second metal layer 12. Wherein, when the circuit board includes two metal layers, namely the first metal layer 11 and the second metal layer 12, the through hole 3 is used to connect the first metal layer 11 and the second metal layer 12. Figure 3As shown, when the circuit board includes multiple metal layers, namely, a first metal layer 11, a second metal layer 12 and at least one intermediate metal layer 13 located between the first metal layer 11 and the second metal layer 12, the through hole 3 is used to electrically connect the first metal layer 11, the second metal layer 12 and the intermediate metal layer 13. At this time, these metal layers are equivalent to one layer, which is conducive to grounding through connection with the metal member through the connector 4 to ensure safety.

[0032] Among them, reference Figure 3 As shown, the number of through holes 3 connecting the first metal layer 11 and the second metal layer 12 can be set to multiple, and multiple through holes 3 are evenly spaced around the periphery of the antenna cavity on the circuit board. The provision of multiple through holes 3 makes the grounding performance of the antenna cavity better and safer. In addition, the provision of multiple through holes 3 can also reduce the weight of the circuit board 10, which is lower in cost.

[0033] In the specific embodiments provided in the present disclosure, the connector 4 can be constructed in any suitable manner. Figures 1 to 3 As shown, the connector 4 can be constructed as a metal spring 41, and the metal spring 41 is welded on the side of the second metal layer 12 facing the metal part and abuts against the metal part. Due to the high frequency environment, an electromagnetic field will be generated around the antenna cavity. If the cavity is not grounded, the electromagnetic field will propagate through the antenna cavity, which will greatly affect the performance of the antenna. The setting of the connector 4 as a metal spring 41 can not only ensure the encirclement of the antenna cavity, but also be used to achieve the grounding of the antenna cavity. In addition, since the metal spring 41 is welded on the side of the second metal layer 12 facing the metal part and abuts against the metal part, when the antenna cavity is enclosed, after the metal part and the circuit board are installed in place, the metal spring 41 can be abutted against the metal part, so that the assembly process of the antenna cavity is convenient to operate, saving time and effort.

[0034] Among them, reference Figure 3 As shown, the number of metal springs 41 can be set to multiple, and multiple metal springs 41 are arranged at intervals on the side of the second metal layer 12 facing the metal member. The arrangement of multiple metal springs 41 can facilitate the connection between the second metal layer 12 and the metal member, thereby facilitating the formation of the antenna cavity and improving the structural stability of the antenna cavity.

[0035] In the specific implementation provided by the present disclosure, the antenna cavity can be constructed in any suitable manner. Optionally, the antenna cavity can be a rectangular cavity, and at least two adjacent sides of the rectangular cavity are formed by a connector 4. At least one side of the rectangular cavity is formed by a metal piece.

[0036] In some embodiments, two adjacent sides of the rectangular cavity are formed by the connector 4. Specifically, taking the application of the antenna assembly to a mobile phone as an example, the rectangular cavity can be formed in the corner area of ​​the mobile phone, so that two adjacent sides of the rectangular cavity (which can be understood as two adjacent sides in the circumferential direction of the rectangular cavity) are formed by the metal frame of the mobile phone (two adjacent side edges), two adjacent sides (which can be understood as two adjacent sides in the circumferential direction of the rectangular cavity) are formed by the connector 4, and the other two sides (which can be understood as the sides close to the mobile phone screen and the sides close to the metal back plate) are respectively formed by the first metal layer 11 and the metal back plate of the mobile phone.

[0037] In other embodiments, three adjacent sides of the rectangular cavity are formed by the connector 4. Taking the application of the antenna assembly to a mobile phone as an example, a rectangular cavity can be formed in the side area of ​​the mobile phone, so that the side frame forms one side of the rectangular cavity (which can be understood as one side of the rectangular cavity in the circumferential direction), and the three adjacent sides of the rectangular cavity (which can be understood as the other three sides in the circumferential direction of the rectangular cavity) are formed by the connector 4, and the other two sides (which can be understood as the sides close to the mobile phone screen and the sides close to the metal back plate) are respectively formed by the first metal layer 11 and the metal back plate of the mobile phone.

[0038] In the specific embodiments provided in the present disclosure, reference is made to Figure 1 As shown, the antenna assembly can also include an excitation source 20, which is arranged on the outer surface of the circuit board. The excitation source 20 is electrically connected to the feed point 2 of the antenna cavity, so that when the frequency of the electromagnetic wave provided by the excitation source 20 matches the resonant frequency of the antenna cavity, a resonant mode is formed in the antenna cavity, generating standing waves, which propagate back and forth inside the antenna cavity, and part of the energy will be radiated through the opening of the antenna cavity to form a radiation field of the antenna. In addition, the excitation source 20 is arranged on the circuit board 10. During installation, the excitation source 20 can be installed after the circuit board 10 is installed, which reduces the installation steps and can further improve the overall consistency of the antenna assembly, and has higher reliability.

[0039] Among them, the excitation source 20 can be configured in any suitable manner. For example, when the antenna assembly is applied to a mobile phone, the excitation source 20 can be an integrated circuit chip, which is also commonly referred to as a radio frequency chip or a baseband chip. This disclosure does not impose any limitations on this, and those skilled in the art can selectively design it as needed.

[0040] It should be noted that the position and number of the feed point 2 in the antenna cavity can be selectively designed according to actual needs, and the present disclosure does not impose any restrictions on this. In addition, there can be multiple ways to electrically connect the feed point 2 and the excitation source 20, for example, they can be connected through a feeder line, and the present disclosure does not impose any restrictions on this. In addition, the antenna assembly provided by the present disclosure is not limited to 2G, 3G, 4G, 5G, GPSWIFI, etc., and those skilled in the art can selectively design it according to actual needs.

[0041] In addition, the present disclosure also provides an electronic device, which may include the above-mentioned antenna assembly, wherein the circuit board of the antenna assembly may be a circuit board of the electronic device, the metal part of the antenna assembly may be a metal part of the electronic device (such as a metal shell), and the circuit board of the electronic device is connected to the metal part of the electronic device through a connector 4, and encloses an antenna cavity of the antenna assembly, which makes the cost of the antenna assembly lower and reduces the space occupied by the antenna assembly in the electronic device, thereby making the structure of the entire electronic device more compact. After the circuit board 10 and the excitation source 20 are installed, the overall consistency of the electronic device is better. In addition, the electronic device has the advantages of the antenna assembly, which will not be elaborated in the present disclosure. In addition, it should be noted that the electronic device can be an electronic product such as a mobile phone, a computer, and a smart watch.

[0042] The number of antenna components in the electronic device can be set to be multiple, and the arrangement method and location of each antenna component on the electronic device can be selectively designed according to actual needs.

[0043] In the specific implementations provided in the present disclosure, the metal piece can be constructed in any suitable manner. Optionally, the metal piece can include a metal frame and a metal back plate, and the metal frame is arranged around the edge of the metal back plate. In other embodiments of the present disclosure, the metal piece can also be constructed in other ways, and the present disclosure does not impose any limitation on this. Those skilled in the art can selectively design according to actual needs.

[0044] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0045] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0046] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An antenna assembly, characterized in that: include: Metal parts; as well as A circuit board, wherein the first metal layer of the circuit board is connected to the metal member through a connecting member, and the antenna cavity is enclosed to form the antenna cavity.

2. The antenna assembly according to claim 1, characterized in that: The circuit board includes at least two metal layers, and a portion of the metal layer between the first metal layer and the metal member located in the antenna cavity is hollowed out.

3. The antenna assembly according to claim 2, characterized in that: The connecting member connects the metal member and a second metal layer in the circuit board that is closest to the metal member, and the first metal layer is connected to the second metal layer through a through hole.

4. The antenna assembly according to claim 3, characterized in that: The connecting member is a metal spring sheet, which is welded to a side of the second metal layer facing the metal member and abuts against the metal member.

5. The antenna assembly according to claim 4, characterized in that: The number of the metal spring sheets is set to be multiple, and the multiple metal spring sheets are arranged at intervals on a side of the second metal layer facing the metal member.

6. The antenna assembly according to claim 1, characterized in that: The antenna cavity is a rectangular cavity, and at least two adjacent sides of the rectangular cavity are formed by the connecting piece.

7. The antenna assembly according to claim 6, characterized in that: At least one side of the rectangular cavity is formed by the metal piece.

8. The antenna assembly according to claim 1, characterized in that: The antenna assembly further includes an excitation source, which is disposed on the outer surface of the circuit board and is electrically connected to a feed point of the antenna cavity.

9. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1 to 8.

10. The electronic device according to claim 9, characterized in that: The metal part comprises a metal frame and a metal back plate, and the metal frame is arranged around the edge of the metal back plate.

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