Slot antenna and electronic equipment

Abstract

The invention belongs to the technical field of electronic equipment, and particularly discloses a slot antenna and electronic equipment. The slot antenna comprises a metal frame, a circuit board and a feed part, the metal frame is provided with an antenna slot, and the antenna slot is provided with a first side wall and a second side wall which are opposite in the width direction and are arranged at an interval; the circuit board is perpendicular to the metal frame and arranged at an interval, and a radio frequency chip and a feed circuit are arranged on the circuit board; the feed part is arranged on the side, facing the metal frame, of the circuit board, the first end of the feed part makes contact with and is electrically connected with the first inner edge of the first side wall, and the second end of the feed part is electrically connected with the radio frequency chip through the feed circuit. The electronic equipment comprises the slot antenna. According to the slot antenna and the electronic equipment provided by the invention, the narrow frame arrangement of the electronic equipment can be facilitated, and the appearance attractiveness of the slot antenna and the electronic equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a slot antenna and an electronic equipment Background Art

[0002] With the development of wireless networks, electronic devices with display screens, such as televisions, electronic whiteboards, and interactive all-in-one computers, are connected to the network via antennas to transmit multimedia data on the network to the electronic devices for display via the wireless network.

[0003] The prior art provides a slot antenna and an electronic device, wherein the slot antenna comprises a slot arranged on a metal front shell of the electronic device and a feeding microstrip line arranged on a circuit board, wherein the circuit board is stacked behind the metal front shell, and the feeding microstrip line is bridged over the narrow side of the slot for feeding the slot antenna.

[0004] The slot antenna provided by the prior art can realize the transmission of wireless signals with a relatively simple structure. However, since the circuit board is stacked behind the metal front shell, the width of the metal front shell needs to consider the width of the circuit board, which results in a larger overall width of the metal front shell, which is not conducive to the narrowing of the frame of the electronic device, that is, it is not conducive to the narrow frame design of the electronic device, and thus is not conducive to the realization of a high screen-to-body ratio design. Summary of the invention

[0005] An object of the present invention is to provide a slot antenna to reduce the required width of a metal frame, facilitate the narrow frame setting of the metal frame, and improve the aesthetic appearance of the slot antenna.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Slot antenna, comprising:

[0008] A metal frame, wherein an antenna slot is provided on the metal frame, and the antenna slot has a first side wall and a second side wall which are opposite to each other and spaced apart in a width direction;

[0009] A circuit board is arranged perpendicular to and spaced from the metal frame, and a radio frequency chip and a feeding circuit are arranged on the circuit board;

[0010] A feeder is arranged on a side of the circuit board facing the metal frame, a first end of the feeder contacts and is electrically connected to a first inner edge of the first side wall, and a second end of the feeder is electrically connected to the RF chip through the feed circuit.

[0011] The beneficial effects of the present invention are:

[0012] The slot antenna provided by the present invention arranges the circuit board and the metal frame vertically so that the width of the metal frame only needs to be greater than the thickness of the circuit board to meet the requirements of circuit board installation, and does not need to be limited by the length and width of the circuit board. Therefore, the width design of the metal frame only needs to meet the requirements of opening the antenna slot, which is conducive to realizing the narrow frame setting of the metal frame. The first side wall and the radio frequency chip are electrically connected through the feeder, and the feeder contacts the inner edge of the first side wall to achieve electrical connection, so that the antenna slot can be set into a regular shape, and there is no need to set a protruding structure that matches the feeder on the inner side of the antenna slot, so that the processing of the antenna slot is simplified, and the exposure of the feeder is reduced, so that the outer side of the metal frame is visually neater and more beautiful. At the same time, the slot antenna with a regular shape is conducive to ensuring the processing accuracy of the antenna slot, thereby ensuring the stability of the feeding, making the radiation of the designed frequency band more stable, and improving the performance of the slot antenna.

[0013] As an optional technical solution of the slot antenna, the feeder includes a mounting seat and an elastic arm, the mounting seat is mounted on the circuit board, one end of the elastic arm is connected to the mounting seat, the other end of the elastic arm is abutted against the first inner edge, and the elastic arm can be deformed along the thickness direction of the metal frame;

[0014] Alternatively, the feeding member includes a screw portion and an abutment portion which are connected to each other, the screw portion is threadedly connected to the circuit board, and the abutment portion abuts against the first inner edge.

[0015] As an optional technical solution for a slot antenna, the circuit board is directly opposite to the antenna slot.

[0016] As an optional technical solution for a slot antenna, the distance between the circuit board and the metal frame is 0.5 mm to 5 mm.

[0017] As an optional technical solution of a slot antenna, the slot antenna further includes a metal grounding member, and two ends of the grounding member are electrically connected to the circuit board and the metal frame respectively.

[0018] As an optional technical solution of a slot antenna, the grounding element and the feeding element are respectively located on two opposite sides of the circuit board;

[0019] And / or, a plurality of grounding members are arranged at intervals along the length direction of the antenna slot.

[0020] As an optional technical solution of a slot antenna, the grounding member is a grounding spring, one end of the grounding spring is connected to the circuit board, and the other end of the grounding spring is abutted against the metal frame;

[0021] Alternatively, the grounding member is a grounding screw member, a mounting boss is protruding from one side of the metal frame facing the circuit board, and the grounding screw member is threadedly connected between the mounting boss and the circuit board.

[0022] As an optional technical solution of a slot antenna, a plurality of antenna slots are provided on the metal frame, and the feeder is arranged in one-to-one correspondence with the antenna slots;

[0023] Alternatively, a plurality of the feeding elements are disposed corresponding to the same antenna slot, and the plurality of the feeding elements are disposed at intervals along the length direction of the antenna slot.

[0024] Another object of the present invention is to provide an electronic device, so as to facilitate the narrow frame setting of the electronic device and improve the appearance of the electronic device.

[0025] To achieve the above object, the present invention adopts the following technical solutions:

[0026] An electronic device comprises the slot antenna as described above, wherein the metal frame is the front frame of the electronic device.

[0027] The beneficial effects of the present invention are:

[0028] The electronic device provided by the present invention can achieve a narrow frame setting of the electronic device by adopting the above-mentioned slot antenna, which is beneficial to increase the screen-to-body ratio of the electronic device, improve the user experience of the electronic device, and also improve the appearance of the electronic device.

[0029] As an optional technical solution for an electronic device, the electronic device includes at least two slot antennas. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure of the slot antenna provided in the first embodiment of the present invention;

[0031] Figure 2 is a cross-sectional view of a slot antenna provided in Embodiment 1 of the present invention;

[0032] Figure 3 yes Figure 2 A partial enlarged view of point I in the middle;

[0033] Figure 4 It is a partial cross-sectional view of the slot antenna provided in the second embodiment of the present invention.

[0034] The following are marked in the figure:

[0035] 1. Metal frame; 11. Antenna gap; 111. First side wall; 112. Second side wall; 2. Circuit board; 3. Feeder; 31. Mounting seat; 32. Elastic arm; 33. Bending portion; 34. Screw portion; 35. Abutment portion; 4. Grounding member; 5. Mounting boss. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Embodiment 1

[0041] The present embodiment provides a slot antenna, which can be applied to electronic devices to implement input and output of wireless signals. The electronic devices may be, but are not limited to, mobile phones, all-in-one interactive machines, televisions, or computers, etc. The present embodiment does not limit the specific type of electronic devices.

[0042] like Figures 1 to 3 As shown, specifically, the slot antenna includes a metal frame 1 and a circuit board 2. The metal frame 1 is provided with an antenna slot 11, and the antenna slot 11 has a first side wall 111 and a second side wall 112 that are opposite and spaced apart in the width direction; the circuit board 2 is perpendicular to the metal frame 1 and spaced apart, and a radio frequency chip and a feeding circuit are arranged on the circuit board 2. A feeding element 3 is arranged on the side of the circuit board 2 facing the antenna slot 11, and the first end of the feeding element 3 is in contact with and electrically connected to the first inner edge of the first side wall 111, and the second end of the feeding element 3 is electrically connected to the radio frequency chip through the feeding circuit.

[0043] The slot antenna provided in the present embodiment arranges the circuit board 2 and the metal frame 1 vertically so that the width of the metal frame 1 only needs to be greater than the thickness of the circuit board 2 to meet the installation requirements of the circuit board 2, without being limited by the length and width of the circuit board 2, so that the width design of the metal frame 1 can meet the requirements of the opening of the antenna slot 11, which is conducive to the narrow frame setting of the metal frame 1; the first side wall 111 and the RF chip are electrically connected through the feeder 3, and the feeder 3 is in contact with the inner edge of the first side wall 111 to achieve electrical connection, so that the antenna slot 11 can be set into a regular shape, and there is no need to set a protruding structure that cooperates with the feeder 3 on the inner side of the antenna slot 11, so as to simplify the processing of the antenna slot 11 and make the outer side of the metal frame 1 more neat and beautiful visually; at the same time, the slot antenna with a regular shape is conducive to ensuring the processing accuracy of the antenna slot 11, thereby ensuring the stability of the feeding, making the radiation in the designed frequency band more stable, and improving the performance of the slot antenna.

[0044] When an electronic device including the slot antenna transmits a signal, the signal is transmitted from the circuit board 2 to the feeder 3 in the form of an electrical signal. The feeder 3 receives the electrical signal and feeds the antenna slot 11 by coupling feeding. The antenna slot 11 receives the electrical signal and transmits the electrical signal in the form of an electromagnetic wave using the metal frame 1 as a carrier.

[0045] When an electronic device including the slot antenna receives a signal, the signal is received by the metal frame 1 in the form of an electromagnetic wave; the antenna slot 11 on the metal frame 1 transmits the signal in the form of an electrical signal to the feeding element 3 by coupling feeding; the feeding element 3 receives the electrical signal and transmits it to the circuit board 2; the circuit board 2 receives the electrical signal, and then the electronic device processes the electrical signal accordingly.

[0046] In this embodiment, the slot antenna 11 is a rectangular strip structure. Preferably, the circuit board 2 is arranged opposite to the antenna slot 11 to shorten the distance between the circuit board 2 and the first side wall 111, thereby improving the convenience of the feeder 3 electrically connecting the feed circuit and the first side wall 111 and reducing the size of the feeder 3. The distance between the circuit board 2 and the metal frame 1 is preferably 0.5mm to 5mm to avoid the problem of a large structural size of the feeder 3 caused by an excessively large distance between the circuit board 2 and the metal frame 1, further reducing the space occupied by the feeder 3 and saving costs.

[0047] Further, in the present embodiment, the feeder 3 adopts a feed spring, which includes a mounting seat portion 31 and an elastic arm portion 32, and the mounting seat portion 31 is mounted on the circuit board 2 by welding or screw connection. One end of the elastic arm portion 32 is connected to the mounting seat portion 31, and the other end is in contact with the first inner edge, and the elastic arm portion 32 can be deformed along the thickness direction of the metal frame 1. This structural setting of the feeder 3 can utilize the elastic deformation of the elastic arm portion 32 to ensure the abutment stability of the feeder 3 and the first inner edge, thereby ensuring the electrical connection stability and reliability of the feeder 3 and the first side wall 111.

[0048] In this embodiment, the elastic arm portion 32 is arranged in a V-shape, and the opening of the V-shaped structure faces the second side wall 112. The elastic arm portion 32 includes a first arm portion and a second arm portion forming two side walls of the V-shaped structure, the first arm portion is perpendicular to the circuit board 2 and is vertically connected to the mounting seat portion 31, the first end of the second arm portion is connected to the first arm portion, the second end extends obliquely in a direction toward the circuit board 2 and away from the first arm portion, and the second end of the second arm portion abuts against the first inner edge.

[0049] The second end of the elastic arm portion 32 is bent in a direction toward the first end to form a bent portion 33, the bent portion 33 and the elastic arm portion 32 are smoothly transitionally connected, and the bent portion of the elastic arm portion 32 and the bent portion 33 abuts against the first inner edge. This can prevent the feeding component 3 from scratching the inner surface of the metal frame 1, thereby improving the service life of the slot antenna.

[0050] It can be understood that, in other embodiments, other structural forms of feeding springs in the prior art can be applied to the present invention.

[0051] Furthermore, the slot antenna further includes a grounding member 4, which is electrically connected between the circuit board 2 and the metal frame 1 to realize the grounding setting of the circuit board 2, improve the safety of the circuit board 2, and improve the safety of the slot antenna. The grounding member 4 and the feeding member 3 are preferably respectively arranged on opposite sides of the circuit board 2 to prevent the setting of the grounding member 4 from interfering with the radio frequency transmission.

[0052] Preferably, at least two grounding members 4 are arranged at intervals along the length direction of the antenna slot 11 to enhance the grounding effect and improve the safety of use.

[0053] In this embodiment, the second side wall 112 has a second inner edge facing the circuit board 2, the grounding member 4 abuts against the second inner edge, and the structure of the grounding member 4 is preferably the same as that of the feeding member 3 to improve structural versatility and reduce costs. In other embodiments, the connection point of the grounding member 4 on the metal frame 1 can be set at any position of the metal frame 1, as long as the grounding member 4 is ensured to achieve electrical connection between the metal frame 1 and the circuit board 2.

[0054] In this embodiment, one antenna slot 11 is provided on the metal frame 1. In another embodiment, two or more antenna slots 11 may be provided on the metal frame 1 to transmit and receive signals of different frequencies. The antenna slots 11 are provided in a one-to-one correspondence with the feeders 3. In another embodiment, two or more feeders 3 may be provided corresponding to the same antenna slot 11.

[0055] It can be understood that the length and width of the antenna slot 11 and the relative position of the feed element 3 in the length direction of the antenna slot 11 are all related to the wavelength of the received signal. The length and width of the antenna slot 11 and the setting position of the feed element 3 can be specifically set according to the design principle of the antenna slot 11 and the preset wavelength of the processed signal, and the present invention does not impose any limitation on this.

[0056] This embodiment further provides an electronic device, including the above-mentioned slot antenna, wherein the metal frame 1 forms a front frame of the electronic device.

[0057] The electronic device provided in this embodiment can achieve a narrow frame setting of the electronic device by adopting the above-mentioned slot antenna, which is beneficial to increase the screen-to-body ratio of the electronic device, improve the user experience of the electronic device, and also improve the appearance of the electronic device.

[0058] It is understandable that the metal frame 1 may be a lower frame, an upper frame, a left frame or a right frame of the electronic device, that is, this embodiment does not limit the location of the antenna slot 11 on the electronic device.

[0059] Furthermore, the electronic device may also include two or more slot antennas, that is, the metal frame 1 in one slot antenna may be the left frame of the electronic device, and the metal frame 1 in another slot antenna may be the right frame of the electronic device, and so on.

[0060] Embodiment 2

[0061] like Figure 4As shown, this embodiment provides a slot antenna and an electronic device having the slot antenna, and the slot antenna provided in this embodiment is basically the same as that in the first embodiment, with only differences in the settings of the feeding component and the grounding component. This embodiment will no longer repeat the structure that is the same as that in the first embodiment.

[0062] In this embodiment, the grounding member 4 includes a grounding screw member, which is made of metal, and a metal mounting boss 5 is convexly provided on the inner side of the metal frame 1. The mounting boss 5 is opposite to and spaced from the circuit board 2, and the grounding screw member is threadedly connected to the mounting boss 5 and the circuit board 2. This arrangement can simplify the structure of the grounding member 4, reduce the difficulty of processing the grounding member 4, and reduce the cost of the slot antenna.

[0063] The mounting boss 5 is preferably disposed on a side of the antenna slot 11 away from the feeder 3. The mounting boss 5 may be integrally formed with the metal frame 1, or may be mounted on the metal frame 1 by welding or screw connection.

[0064] In this embodiment, the feeder 3 includes a screw portion 34 and an abutment portion 35 connected to each other, the screw portion 34 is threadedly connected to the circuit board 2, and the abutment portion 35 abuts against the first inner edge. This feeder 3 has a simple structure and low cost, which is conducive to reducing the cost of the entire slot antenna and electronic equipment.

[0065] It is understandable that in other embodiments, the feeding element 3 may have other structural shapes as long as the feeding element 3 realizes the electrical connection between the first inner edge and the circuit board 2 .

[0066] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A slot antenna, characterized in that: include: A metal frame (1), wherein the metal frame (1) is provided with an antenna slot (11), wherein the antenna slot (11) has a first side wall (111) and a second side wall (112) which are opposite to each other and spaced apart in a width direction; A circuit board (2) is arranged perpendicular to and spaced apart from the metal frame (1), and a radio frequency chip and a feeding circuit are arranged on the circuit board (2); A feeder (3) is arranged on a side of the circuit board (2) facing the metal frame (1), a first end of the feeder (3) is in contact with and electrically connected to a first inner edge of the first side wall (111), and a second end of the feeder (3) is electrically connected to the radio frequency chip via the feed circuit.

2. The slot antenna according to claim 1, characterized in that: The feeder (3) comprises a mounting seat portion (31) and an elastic arm portion (32), wherein the mounting seat portion (31) is mounted on the circuit board (2), one end of the elastic arm portion (32) is connected to the mounting seat portion (31), and the other end of the elastic arm portion (32) is in contact with the first inner edge, and the elastic arm portion (32) can be deformed along the thickness direction of the metal frame (1); Alternatively, the feeder (3) comprises a connected screw portion (34) and an abutment portion (35), wherein the screw portion (34) is threadedly connected to the circuit board (2), and the abutment portion (35) abuts against the first inner edge.

3. The slot antenna according to claim 1, wherein: The circuit board (2) is directly opposite to the antenna slot (11).

4. The slot antenna according to claim 3, characterized in that: The distance between the circuit board (2) and the metal frame (1) is 0.5 mm to 5 mm.

5. The slot antenna according to any one of claims 1 to 4, characterized in that: The slot antenna further comprises a metal grounding member (4), and two ends of the grounding member (4) are respectively electrically connected to the circuit board (2) and the metal frame (1).

6. The slot antenna according to claim 5, characterized in that: The grounding element (4) and the feeding element (3) are respectively located on two opposite sides of the circuit board (2); And / or, a plurality of grounding members (4) are arranged at intervals along the length direction of the antenna slot (11).

7. The slot antenna according to claim 6, characterized in that: The grounding member (4) is a grounding spring sheet, one end of which is connected to the circuit board (2), and the other end of which is in contact with the metal frame (1); Alternatively, the grounding member (4) is a grounding threaded member, a metal mounting boss (5) is protrudingly provided on one side of the metal frame (1) facing the circuit board (2), and the grounding threaded member is threadedly connected between the mounting boss (5) and the circuit board (2).

8. The slot antenna according to any one of claims 1 to 4, characterized in that: A plurality of antenna slots (11) are provided on the metal frame (1), and the feeding components (3) are arranged in a one-to-one correspondence with the antenna slots (11); Alternatively, a plurality of the feeding elements (3) are arranged corresponding to the same antenna slot (11), and the plurality of the feeding elements (3) are arranged at intervals along the length direction of the antenna slot (11).

9. An electronic device, characterized in that It comprises the slot antenna according to any one of claims 1 to 8, wherein the metal frame (1) is the front frame of the electronic device.

10. The electronic device according to claim 9, characterized in that: The electronic device includes at least two of the slot antennas.

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