Antenna assembly and electronic equipment

Abstract

The utility model relates to the technical field of antenna radiation, in particular to an antenna assembly and electronic equipment, and the antenna assembly comprises a radiation middle frame, a mainboard and a radiator. Wherein the radiation middle frame is provided with an accommodating cavity. The main board is located in the containing cavity, and the main board is connected with the radiation middle frame through a connecting part and electrically conducted with the radiation middle frame. And the radiator is positioned outside the accommodating cavity and is electrically connected with the mainboard. The radiator and the radiation middle frame can serve as antennas of the main board to help the main board radiate and receive signals, so that the working performance of the main board is improved. The main board is located in the containing cavity and connected with the radiation middle frame through the connecting part, so that the radiation middle frame can support the main board on one hand and can feed and be grounded through the connecting part on the other hand. In addition, the radiator is located outside the accommodating cavity, so that interference between the radiator and the radiation middle frame can be reduced, and the working performance of the antenna assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of antenna radiation technology, and in particular to an antenna assembly and an electronic device. Background Art

[0002] Electronic devices refer to devices that assist users in completing information interaction. They generally transmit information by antenna radiation.

[0003] Electronic devices generally include an antenna assembly, which can process user information and radiate outward in a specific frequency band.

[0004] In the related art, the working performance of the antenna assembly is poor. Utility Model Content

[0005] In view of this, the present application provides an antenna assembly and an electronic device to improve their working performance.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of the present application provides an antenna assembly, the antenna assembly comprising a radiation middle frame, a main board and a radiator. The radiation middle frame has a receiving cavity. The main board is located in the receiving cavity, and the main board is connected to the radiation middle frame through a connecting portion and is electrically conductive. The radiator is located outside the receiving cavity and is electrically connected to the main board.

[0008] Optionally, the antenna assembly includes a conductive member, the conductive member connects the radiation middle frame and the connecting portion, and the radiation middle frame and the connecting portion are both electrically connected to the conductive member.

[0009] Optionally, the connection portion includes a grounding point and a feeding point, and the grounding point and the feeding point are both connected to and electrically connected to the radiation middle frame.

[0010] Optionally, the number of the feeding points is at least two, the number of the grounding points corresponds to the number of the feeding points, the at least two feeding points are arranged at intervals along the circumference of the mainboard, and there is at least one grounding point between every two adjacent feeding points.

[0011] Optionally, the main board includes a first circuit board and a second circuit board, the first circuit board and the second circuit board are both located in the accommodating cavity, the first circuit board is connected to the radiation middle frame and is electrically conductive, the second circuit board is electrically conductive to the radiator, and the second circuit board is electrically conductive to the first circuit board.

[0012] Optionally, the first circuit board and the second circuit board are spaced apart from each other along a height direction of the radiation middle frame.

[0013] Optionally, the main board further includes a third circuit board, which is located in the interval and electrically connects the first circuit board and the second circuit board.

[0014] Optionally, the radiator includes a first radiating portion and a second radiating portion, and the first radiating portion and the second radiating portion are located in the same plane.

[0015] Optionally, the antenna assembly further includes an elastic portion, wherein the elastic portion is located between the radiator and the mainboard and abuts against the radiator and the mainboard respectively.

[0016] Optionally, the antenna assembly further includes a cover body, wherein the cover body is located outside the accommodating cavity and connected to the radiation middle frame, and the radiator is located on a side of the cover body away from the accommodating cavity and connected to the cover body.

[0017] Optionally, the radiator includes a polarizer and / or a flexible printed circuit board.

[0018] Optionally, the radiation middle frame operates in a first frequency band, the radiator operates in a second frequency band, and the maximum frequency of the first frequency band is greater than or equal to the maximum frequency of the second frequency band.

[0019] A second aspect of the present application provides an electronic device, which includes the antenna assembly as described in the above technical solution.

[0020] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the radiator and the radiating middle frame can both serve as antennas for the mainboard to help the mainboard radiate and receive signals, thereby improving the working performance of the mainboard. The mainboard is located in the accommodating cavity and is connected to the radiating middle frame through a connecting portion, so that the radiating middle frame can support the mainboard on the one hand, and can also be fed and grounded through the connecting portion on the other hand. The radiator is located outside the accommodating cavity, which can reduce interference with the radiating middle frame, thereby improving the working performance of the antenna assembly of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of an antenna assembly provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structural decomposition of an antenna assembly provided in an embodiment of the present application;

[0024] Figure 3 A schematic top view of a main board provided in an embodiment of the present application;

[0025] Figure 4 A schematic top view of a radiator provided in an embodiment of the present application;

[0026] Figure 5 A schematic top view of a portion of the structure of a main board provided in an embodiment of the present application;

[0027] Figure 6 A schematic front view of a radiation middle frame provided in an embodiment of the present application;

[0028] Figure 7 A schematic front view of a portion of the structure of a mainboard provided in an embodiment of the present application;

[0029] Figure 8 A schematic diagram of a part of the structure of the mainboard provided in an embodiment of the present application;

[0030] Fig. 9 An efficiency gain diagram of an antenna assembly provided in an embodiment of the present application.

[0031] The reference numerals in the figures represent respectively:

[0032] 1. Radiating middle frame; 100. Accommodating cavity;

[0033] 2. Main board; 21. Connecting part; 211. Grounding point; 212. Feeding point; 22. First circuit board; 23. Second circuit board; 200. Interval; 24. Third circuit board;

[0034] 3. radiator; 31. first radiating part; 32. second radiating part;

[0035] 4. Conductive parts;

[0036] 5. Cover body;

[0037] 6. Elastic part;

[0038] 7. Connector.

[0039] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0042] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0043] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0044] A first aspect of the present application provides an antenna assembly, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the antenna assembly includes a radiation middle frame 1, a main board 2 and a radiator 3. The radiation middle frame 1 has a receiving cavity 100. The main board 2 is located in the receiving cavity 100, and the main board 2 is connected to the radiation middle frame 1 through a connecting portion 21 and is electrically conductive. The radiator 3 is located outside the receiving cavity 100 and is electrically connected to the main board 2.

[0045] It is understandable that both the radiator 3 and the radiation middle frame 1 can be used as antennas for the mainboard 2 to help the mainboard 2 radiate and receive signals, thereby improving the working performance of the mainboard 2. The mainboard 2 is located in the accommodating cavity 100 and is connected to the radiation middle frame 1 through the connecting portion 21, so that the radiation middle frame 1 can support the mainboard 2 on the one hand, and can also be fed and grounded through the connecting portion 21 on the other hand. The radiator 3 is located outside the accommodating cavity 100, which can reduce interference with the radiation middle frame 1, thereby improving the working performance of the antenna assembly of the present application.

[0046] In the embodiment of the present application, the radiation middle frame 1 can be used as the antenna of the mainboard 2. It can be an integrated structure to work in one frequency band, or it can be composed of multiple mutually insulated parts to work in multiple frequency bands.

[0047] In the embodiment of the present application, the accommodating cavity 100 serves to accommodate the mainboard 2 , and may have an opening extending to the edge of the radiation middle frame 1 so that the radiator 3 forms an electrical connection with the mainboard 2 .

[0048] In the embodiment of the present application, the mainboard 2 can feed power to the radiation middle frame 1 through the connection part 21, so that it generates a current matching the data to be transmitted for radiation. The radiation middle frame 1 can also be grounded on the mainboard 2 through the connection part 21.

[0049] In the embodiment of the present application, the radiator 3 can serve as an antenna of the mainboard 2 to radiate and receive signals. On the other hand, due to the electrical connection with the mainboard 2, it can also serve as an electrode to directly contact the human body to monitor the vital signs and parameters of the human body.

[0050] In the embodiment of the present application, the connection portion 21 may contain a conductive metal to form an electrical connection between the mainboard 2 and the radiation middle frame 1. The connection portion 21 may be welded, clamped or bolted to achieve electrical connection between the mainboard 2 and the radiation middle frame 1, thereby supporting the mainboard 2.

[0051] In the embodiment of the present application, the radiator 3 is also helpful to improve the antenna performance of the antenna assembly of the present application, such as Fig. 9 As shown, the vertical axis is the system radiation efficiency and the horizontal axis is the frequency. The embodiment is the solution of the antenna assembly described in this application, and the comparative example is the solution of the antenna assembly of this application after removing the radiator 3. It can be seen from the figure that in the frequency band of 0.5 to 1.1 GHz, the efficiency of the embodiment is improved compared with the efficiency of the comparative example.

[0052] In some of the embodiments of this application, Figure 1 and Figure 5 As shown, the antenna assembly includes a conductive member 4 , which connects the radiation middle frame 1 and the connection portion 21 , and both the radiation middle frame 1 and the connection portion 21 are electrically connected to the conductive member 4 .

[0053] It can be understood that the conductive member 4 plays the role of transmitting current. The conductive member 4 electrically connects the radiation middle frame 1 with the connecting part 21, so that the radiation middle frame 1 can be grounded through the conductive member 4 and the connecting part 21, or the mainboard 2 can supply power to the radiation middle frame 1 through the connecting part 21 and the conductive member 4.

[0054] In the embodiment of the present application, the radiation middle frame 1 has a threaded hole, the connection part 21 has a through hole, and the conductive member 4 is threadedly connected with the threaded hole through the through hole, thereby forming an electrical connection between the connection part 21 and the radiation middle frame 1.

[0055] In the embodiment of the present application, the conductive member 4 may be elastic, and is between the radiation middle frame 1 and the mainboard 2 , and abuts against the two to form an electrical connection.

[0056] In some of the embodiments of this application, Figure 3 As shown, the connection portion 21 includes a grounding point 211 and a feeding point 212 , and the grounding point 211 and the feeding point 212 are both connected to the radiation middle frame 1 and electrically connected.

[0057] In the embodiment of the present application, the feed point 212 can ground the radiation middle frame 1, and the feed point 212 can be used by the mainboard 2 to supply power to the radiation middle frame 1. The setting of the feed point 212 and the feed point 212 is conducive to the normal operation of the radiation middle frame 1, and can also provide the radiation middle frame 1 with an electrical connection to the mainboard 2.

[0058] In some embodiments of the present application, when the mainboard 2 needs to radiate and receive signals in multiple frequency bands, the radiation middle frame 1 needs to have a corresponding structure to match it. Figure 3 As shown, the number of the feeding points 212 is at least two, the number of the grounding points 211 corresponds to the number of the feeding points 212, at least two feeding points 212 are arranged at intervals 200 along the circumference of the main board 2, and there is at least one grounding point 211 between every two adjacent feeding points 212. This is conducive to the main board 2 working in multiple frequency bands.

[0059] It can be understood that a feeding point 212, a grounding point 211 and a portion of the structure of the radiating middle frame 1 form a current flow path for the antenna, which enables the portion of the radiating middle frame 1 to be electrically connected to the mainboard 2 and radiate and receive signals in a specific frequency band.

[0060] In an embodiment of the present application, the operating frequency band of the radiation middle frame 1 can be the operating frequency band corresponding to the wireless wide area network (WWAN), the operating frequency band corresponding to the global navigation satellite system (GNSS), the 2.4 GHz frequency band and the 5 GHz frequency band.

[0061] In the embodiment of the present application, the number of the grounding points 211 is two, and the number of the feeding points 212 is also two.

[0062] In some of the embodiments of this application, Figure 2 As shown, the main board 2 includes a first circuit board 22 and a second circuit board 23, both of which are located in the accommodating cavity 100, the first circuit board 22 is connected to the radiation middle frame 1 and is electrically conductive, the second circuit board 23 is electrically conductive to the radiator 3, and the second circuit board 23 is electrically conductive to the first circuit board 22.

[0063] It is understandable that the first circuit board 22 is connected to the radiation middle frame 1 and electrically conductive, which can improve its stability. At the same time, the radiation middle frame 1 is used to radiate and receive signals, so that the antenna assembly of the present application can interact with other electronic devices. The second circuit board 23 is electrically conductive with the radiator 3, and the radiator 3 can be used as an electrode to contact the human body to form a loop. The second circuit board 23 monitors the vital signs of the human body through the radiator 3, and transmits relevant information to the first circuit board 22 for processing.

[0064] In some embodiments of the present application, the radiation middle frame 1 can be used as a shell of an electronic device, and its accommodating cavity 100 needs to be arranged with other components in addition to accommodating the mainboard 2. Figure 2 As shown, the first circuit board 22 and the second circuit board 23 form a gap 200 along the height direction of the radiation middle frame 1. This is beneficial to improving the space utilization efficiency of the accommodation cavity 100.

[0065] It is understandable that the interval 200 is conducive to improving the independence between the first circuit board 22 and the second circuit board 23, and reducing the mutual interference between the two. At the same time, it can also be used for arranging the circuits of the first circuit board 22 and the second circuit board 23, which is conducive to improving the compactness of the main board 2, thereby improving the space utilization efficiency of the accommodating cavity 100.

[0066] In the embodiment of the present application, the size of the interval 200 may range from 3 to 5 mm, wherein the size of the interval 200 may be 3 mm, 4 mm or 5 mm, or may be other values ​​between 3 and 5 mm.

[0067] In some of the embodiments of this application, Figure 2 , Figure 7 and Figure 8 As shown, the main board 2 further includes a third circuit board 24 , which is located in the space 200 and electrically connected to the first circuit board 22 and the second circuit board 23 .

[0068] It can be understood that the third circuit board 24 mainly plays the role of transmitting signals, which can realize communication between the first circuit board 22 and the second circuit board 23, and is conducive to the first circuit board 22 processing information from the second circuit board 23.

[0069] In the embodiment of the present application, the third circuit board 24 and the first circuit board 22 can be connected via a connector 7 .

[0070] In some of the embodiments of this application, Figure 4 As shown, the radiator 3 includes a first radiating portion 31 and a second radiating portion 32 , and the first radiating portion 31 and the second radiating portion 32 are located in the same plane.

[0071] It is understandable that both the first radiation part 31 and the second radiation part 32 can be used as electrodes to directly contact the human body. The two are located on the same plane, which is beneficial to increase the area of ​​contact with the human body, thereby improving the accuracy of the monitoring result.

[0072] In the embodiment of the present application, the first radiation portion 31 and the second radiation portion 32 may both be in the shape of arc rings, and the centers of the two circles are arranged opposite to each other.

[0073] In some of the embodiments of this application, Figure 2 As shown, the antenna assembly further includes an elastic portion 6 , which is located between the radiator 3 and the mainboard 2 and abuts against the radiator 3 and the mainboard 2 respectively.

[0074] It can be understood that by abutting against the radiator 3 and the mainboard 2, the elastic part 6 is conducive to achieving electrical conduction between the two. At the same time, through the pressure generated by the abutment between the two, the connection performance and stability between the two can be improved, thereby completing the transmission of current to radiate and receive signals.

[0075] In some of the embodiments of this application, Figure 2 As shown, the antenna assembly further includes a cover body 5 , which is located outside the accommodating cavity 100 and connected to the radiation middle frame 1 , and the radiator 3 is located on a side of the cover body 5 away from the accommodating cavity 100 and connected to the cover body 5 .

[0076] It is understandable that the cover 5 can limit the radiator 3, help the radiator 3 to form a stable electrical connection with the mainboard 2, and facilitate the mainboard 2 to supply power to the radiator 3. Specifically, when the radiator 3 is hit, it will maintain a relatively stable posture under the interference of the cover 5, so as to avoid the radiator 3 and the mainboard 2 from being disconnected.

[0077] In some embodiments of the present application, the radiator 3 includes a polarizer.

[0078] It is understandable that the polarity sheet can receive current from the main board 2 and then radiate outward. The polarity sheet can also directly contact the human body to form a loop between the main board 2 and the human body, so that the main board 2 can monitor the vital signs and parameters of the human body.

[0079] In some embodiments of the present application, the radiator 3 includes a flexible printed circuit board.

[0080] It can be understood that the flexible printed circuit board can receive current from the main board 2 and then radiate outward.

[0081] In some embodiments of the present application, the radiator 3 includes a polarizer and a flexible printed circuit board.

[0082] It is understandable that both the flexible printed circuit board and the polarity sheet can receive current from the main board 2 and then radiate outward. The polarity sheet can directly contact the human body, so that a loop is formed between the main board 2 and the human body, so that the main board 2 can monitor the vital signs parameters of the human body.

[0083] In some embodiments of the present application, the radiation middle frame 1 operates in a first frequency band, the radiator 3 operates in a second frequency band, and the maximum frequency of the first frequency band is greater than or equal to the maximum frequency of the second frequency band.

[0084] It can be understood that the maximum frequency of the first frequency band is greater than the maximum frequency of the second frequency band, so that the radiator 3 operates in a lower frequency band, which is beneficial to improving the working performance of the antenna assembly of the present application in a lower frequency band, while the radiating middle frame 1 operates in a higher frequency band, which is beneficial to improving the independence of the operation of the two.

[0085] In the embodiment of the present application, the operating frequency band of the radiator 3 is 700 to 960 MHz, and the maximum frequency of the second frequency band is greater than or equal to 960 MHz.

[0086] A second aspect of the present application provides an electronic device, which includes the antenna assembly according to the above embodiment.

[0087] It can be understood that, due to the use of the antenna assembly described in the above embodiment, the electronic device of the present application has the same technical effects as the above embodiment, which will not be repeated here.

[0088] In the embodiments of the present application, the electronic device may be a smart watch, a smart phone, a tablet computer, or the like.

[0089] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0090] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0091] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An antenna assembly, characterized in that: The antenna assembly comprises a radiation middle frame (1), a main board (2) and a radiator (3), wherein: The radiation middle frame (1) has a receiving cavity (100); The main board (2) is located in the accommodating cavity (100), and the main board (2) is connected to the radiation middle frame (1) via a connecting portion (21) and is electrically conductive; The radiator (3) is located outside the accommodating cavity (100) and is electrically connected to the mainboard (2).

2. The antenna assembly according to claim 1, characterized in that: The antenna assembly comprises a conductive member (4), wherein the conductive member (4) connects the radiation middle frame (1) and the connection portion (21), and the radiation middle frame (1) and the connection portion (21) are both electrically conductive to the conductive member (4).

3. The antenna assembly according to claim 1, characterized in that: The connecting portion (21) comprises a grounding point (211) and a feeding point (212), and the grounding point (211) and the feeding point (212) are both connected and electrically connected to the radiation middle frame (1).

4. The antenna assembly according to claim 3, characterized in that: The number of the feeding points (212) is at least two, the number of the grounding points (211) corresponds to the number of the feeding points (212), the at least two feeding points (212) are arranged at circumferential intervals (200) along the main board (2), and there is at least one grounding point (211) between every two adjacent feeding points (212).

5. The antenna assembly according to claim 1, characterized in that: The main board (2) comprises a first circuit board (22) and a second circuit board (23); the first circuit board (22) and the second circuit board (23) are both located in the accommodating cavity (100); the first circuit board (22) is connected to the radiation middle frame (1) and is electrically conductive; the second circuit board (23) is electrically conductive to the radiator (3); and the second circuit board (23) is electrically conductive to the first circuit board (22).

6. The antenna assembly according to claim 5, characterized in that: The first circuit board (22) and the second circuit board (23) form a gap (200) along the height direction of the radiation middle frame (1).

7. The antenna assembly according to claim 6, characterized in that: The main board (2) further comprises a third circuit board (24), wherein the third circuit board (24) is located in the interval (200) and is electrically connected to the first circuit board (22) and the second circuit board (23).

8. The antenna assembly according to claim 1, characterized in that: The radiator (3) comprises a first radiating portion (31) and a second radiating portion (32), wherein the first radiating portion (31) and the second radiating portion (32) are located in the same plane.

9. The antenna assembly according to claim 1, characterized in that: The antenna assembly further comprises an elastic portion (6), wherein the elastic portion (6) is located between the radiator (3) and the main board (2), and abuts against the radiator (3) and the main board (2) respectively.

10. The antenna assembly according to claim 1, characterized in that: The antenna assembly further comprises a cover body (5), wherein the cover body (5) is located outside the accommodating cavity (100) and is connected to the radiation middle frame (1), and the radiator (3) is located on a side of the cover body (5) away from the accommodating cavity (100) and is connected to the cover body (5).

11. The antenna assembly according to claim 1, characterized in that: The radiator (3) comprises a polarizing plate and / or a flexible printed circuit board.

12. The antenna assembly according to claim 1, characterized in that: The radiation middle frame (1) operates in a first frequency band, the radiator (3) operates in a second frequency band, and the maximum frequency of the first frequency band is greater than or equal to the maximum frequency of the second frequency band.

13. An electronic device, characterized in that: The electronic device comprises the antenna assembly according to any one of claims 1 to 12.

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