Electronic equipment

Abstract

The utility model discloses an electronic device, which comprises a casing, a power supply, a power supply module and a power supply module, and is characterized in that the casing is provided with a built-in space; the printed circuit board is located in the built-in space and comprises a first metal layer, a first dielectric layer, a grounding layer, a second dielectric layer and a second metal layer which are sequentially stacked in the thickness direction; the first metal layer comprises a first coupling unit; the second metal layer comprises a second coupling unit opposite to the first coupling unit, and a feeding point of the second coupling unit is connected with a feeding point of the first coupling unit; the grounding layer is insulated from the first coupling unit and the second coupling unit; the first radiation patch is positioned on the inner wall of the shell and is opposite to the first coupling unit, and the first radiation patch, the first coupling unit and the grounding layer form a first patch antenna; and the second radiation patch is positioned on the inner wall of the shell and is opposite to the second coupling unit, and the second radiation patch, the second coupling unit and the grounding layer form a second patch antenna. The antenna structure in the electronic equipment has the advantages of high gain, strong beam directivity and good coverage performance.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to an electronic device. Background Technology

[0002] Antennas, as electronic devices that transmit and receive electromagnetic waves, are an important component of wireless access devices. In some communication systems, high-gain antennas are required to achieve signal coverage through walls.

[0003] To achieve high gain, antenna designs typically employ arrays composed of multiple elements fed in parallel or series. For example, patent CN112542689A describes a multi-radiator antenna and electronic device that uses multiple dipoles fed in series. These antennas are generally large and require dedicated radiation space, hindering miniaturization. As user demands for device aesthetics increase, more and more devices are incorporating built-in antennas. For instance, patent CN115207622A describes a dual-fed single-unit antenna and electronic device that provides a built-in antenna. Currently, most terminal products use similar methods for built-in antennas. However, these antennas suffer from low pattern gain, poor beam pointing, and inadequate coverage. Therefore, providing a built-in antenna with stable beam pointing and high gain is a pressing issue that needs to be addressed. Utility Model Content

[0004] This invention provides an electronic device in which the antenna structure can achieve the advantages of high gain, strong beam directivity and good coverage performance while ensuring the miniaturization of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An electronic device, comprising:

[0007] A housing having an internal space;

[0008] A printed circuit board, located within the built-in space, includes:

[0009] A first metal layer, a first dielectric layer, a ground layer, a second dielectric layer, and a second metal layer are sequentially stacked along the thickness direction;

[0010] The first metal layer includes a first coupling unit;

[0011] The second metal layer includes a second coupling unit opposite to the first coupling unit, and the feed point of the second coupling unit is connected to the feed point of the first coupling unit;

[0012] The grounding layer is insulated from the first coupling unit and the second coupling unit;

[0013] The first radiating patch is located on the inner wall of the housing and is opposite to the first coupling unit. The first radiating patch is used to extend the bandwidth. The first radiating patch, the first coupling unit and the grounding layer constitute the first patch antenna.

[0014] The second radiating patch is located on the inner wall of the housing and opposite to the second coupling unit. The second radiating patch is used to extend the bandwidth. The second radiating patch, the second coupling unit and the grounding layer constitute the second patch antenna.

[0015] The electronic device described above has the following advantages: it includes a housing and a printed circuit board (PCB) located inside the housing. A first coupling unit and a ground layer on the PCB, together with a first radiating patch on the inner wall of the housing, form a first patch antenna. A second coupling unit and a ground layer on the PCB, together with a second radiating patch on the inner wall of the housing, form a second patch antenna. That is, the first and second patch antennas are integrated on both sides of the PCB. The antenna structure consisting of the first and second patch antennas does not occupy space within the housing other than that occupied by the PCB, enabling miniaturization of the electronic device. Furthermore, the patch antennas have the advantages of high gain and strong beam directivity. The radiating beam of the first patch antenna can point to one side of the PCB, while the radiating beam of the second patch antenna can point to the other side, improving the coverage of radio frequency signals on both sides of the PCB. Therefore, in the above electronic device, the antenna structure consisting of the first and second patch antennas can achieve high gain, strong beam directivity, and good coverage performance while ensuring miniaturization.

[0016] In some embodiments of this application, the first metal layer further includes a power feeding structure, which is connected to the edge of the first coupling unit;

[0017] The feed point of the first coupling unit is located in the region where the first coupling unit is connected to the feed structure.

[0018] The electronic device in the above technical solution has the following beneficial effects: the power feeding structure is connected to the edge of the first coupling unit, the printed circuit board transmits signals to the first coupling unit through the power feeding structure, the first coupling unit is connected to the second coupling unit to realize power distribution, and the radio frequency signal can cover the front and back of the printed circuit board through two patch antennas respectively.

[0019] In some embodiments of this application, the printed circuit board further includes a through-hole penetrating the first dielectric layer and the second dielectric layer, the through-hole being opposite to the feed point of the first coupling unit;

[0020] The feed point of the first coupling unit is connected to the feed point of the second coupling unit through the through hole;

[0021] The grounding layer has a clearance hole, and the orthogonal projection of the through hole on the grounding layer is located within the clearance hole, so that the grounding layer is insulated from the first coupling unit and the second coupling unit.

[0022] The electronic device in the above technical solution has the following beneficial effects: the feed point of the first coupling unit and the feed point of the second coupling unit can be connected through the through holes on the first dielectric layer and the second dielectric layer, which allows the first patch antenna and the second patch antenna to achieve power distribution through the through holes, so that the radio frequency signal can cover the front and back of the printed circuit board through the two patch antennas respectively. The ground layer is provided with avoidance holes, which can prevent the metal material in the through holes from connecting with the ground layer.

[0023] In some embodiments of this application, the orthographic projection of the first coupling unit on the ground layer coincides with the orthographic projection of the second coupling unit on the ground layer.

[0024] The electronic device in the above technical solution has the following beneficial effects: the first coupling unit and the second coupling unit form a symmetrical structure about the ground layer, which enables the power on the first coupling unit and the second coupling unit to be evenly distributed, and ensures that the radiation coverage of the first patch antenna and the second patch antenna is the same.

[0025] In some embodiments of this application, the shape of the orthographic projection of the first coupling unit onto the ground layer is a circle or a polygon.

[0026] The electronic device in the above technical solution has the following beneficial effects: the pattern of the first coupling unit can be a circle or a polygon, and the pattern structure is simple and easy to manufacture.

[0027] In some embodiments of this application, the orthographic projection of the first radiating patch on the printed circuit board coincides with the orthographic projection of the second radiating patch on the printed circuit board;

[0028] The orthographic projection of the first radiating patch on the printed circuit board covers the first coupling unit, and the area of ​​the orthographic projection of the first radiating patch on the ground plane is larger than the area of ​​the orthographic projection of the first coupling unit on the ground plane.

[0029] The electronic device in the above technical solution has the following beneficial effects: the pattern shape and size of the first radiating patch can be the same as the pattern shape and size of the second radiating patch, the structure is simple and easy to manufacture, the orthographic projection of the first radiating patch can cover the first coupling unit, and the first coupling unit and the first radiating patch unit are fed through coupling, the orthographic projection of the second radiating patch can also cover the second coupling unit, and the second coupling unit and the second radiating patch are fed through coupling.

[0030] In some embodiments of this application, the shape of the orthographic projection of the first radiating patch on the printed circuit board is circular or polygonal.

[0031] The electronic device in the above technical solution has the following beneficial effects: the pattern shape of the first radiating patch can be circular or polygonal, and the structure is simple and easy to manufacture.

[0032] In some embodiments of this application, the center point of the orthographic projection of the first radiating patch onto the ground layer coincides with the center point of the orthographic projection of the first coupling unit onto the ground layer.

[0033] The electronic device in the above technical solution has the following beneficial effects: the first coupling unit and the first radiating patch are fed through coupling, which can optimize the radiation coverage of the first patch antenna; the second coupling unit and the second radiating patch are fed through coupling, which can optimize the radiation coverage of the second patch antenna.

[0034] In some embodiments of this application, the distance between the first radiating patch and the first coupling unit is a first distance, the distance between the second radiating patch and the second coupling unit is a second distance, and the first distance is equal to the second distance.

[0035] The electronic device in the above technical solution has the following beneficial effects: the first spacing and the second spacing are equal, which can realize that the first patch antenna and the second patch antenna are symmetrical along the ground layer, so that the functional characteristics of the first patch antenna and the second patch antenna are the same, and ensure that the radiation effect of the antenna on both sides of the printed circuit board is the same.

[0036] In some embodiments of this application, the first spacing is 3mm to 5mm. Attached Figure Description

[0037] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of this utility model;

[0038] Figure 2 A schematic diagram of the structure of an antenna provided in an embodiment of this utility model;

[0039] Figure 3A cross-sectional view of a printed circuit board provided for an embodiment of this utility model;

[0040] Figure 4 A cross-sectional view of an antenna provided for an embodiment of this utility model;

[0041] Figure 5 A schematic diagram of the structure of a first metal layer provided in an embodiment of this utility model;

[0042] Figure 6 This is a schematic diagram of another first metal layer provided in an embodiment of the present invention;

[0043] Figure 7 A schematic diagram of the structure of a second metal layer provided in an embodiment of this utility model;

[0044] Figure 8 This is a schematic diagram of another structure of the second metal layer provided in an embodiment of the present invention;

[0045] Figure 9 A schematic diagram of the structure of a first radiating patch or a second radiating patch provided in an embodiment of this utility model;

[0046] Figure 10 This is a schematic diagram of another first or second radiating patch provided in an embodiment of the present utility model;

[0047] Figure 11 A schematic diagram of the structure of an antenna provided in an embodiment of this utility model;

[0048] Figure 12 A 3D radiation pattern of an antenna provided for an embodiment of this utility model.

[0049] icon:

[0050] 100 - Housing; 1 - Printed circuit board; 11 - First metal layer; 111 - First coupling unit; 112 - Power supply structure; 12 - First dielectric layer; 13 - Ground layer; 14 - Second dielectric layer; 15 - Second metal layer; 151 - Second coupling unit; 16 - Through hole; 2 - First radiating patch; 3 - Second radiating patch. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0052] Currently, antennas have become essential components in various wireless devices for transmitting and receiving electromagnetic wave signals. As users place increasingly higher demands on the appearance of antenna devices, more and more devices are incorporating built-in antennas. However, to avoid the influence of the printed circuit board inside the device on the radiation range of the built-in antenna, the built-in antenna needs to occupy a separate space outside the printed circuit board area within the housing. This affects the miniaturization effect of the device and results in problems such as low pattern gain, poor beam pointing, and poor coverage performance. How to provide a built-in antenna with stable beam pointing and high gain while ensuring device miniaturization is a problem that urgently needs to be solved.

[0053] To solve the above-mentioned technical problems, this utility model provides an electronic device, such as... Figures 1 to 4 As shown, it includes:

[0054] Housing 100, housing 100 has internal space;

[0055] The printed circuit board 1, located within an internal space, includes a first metal layer 11, a first dielectric layer 12, a ground layer 13, a second dielectric layer 14, and a second metal layer 15 stacked sequentially along the thickness direction. The first metal layer 11 includes a first coupling unit 111, and the second metal layer 15 includes a second coupling unit 151 opposite to the first coupling unit 111. The feed point of the second coupling unit 151 is connected to the feed point of the first coupling unit 111. The ground layer 13 is insulated from the first coupling unit 111 and the second coupling unit 151.

[0056] The first radiating patch 2 is located on the inner wall of the housing 100 and is opposite to the first coupling unit 111. The first radiating patch 2 is used to extend the bandwidth. The first radiating patch 2, the first coupling unit 111 and the ground layer 13 constitute the first patch antenna.

[0057] The second radiating patch 3 is located on the inner wall of the housing 100 and is opposite to the second coupling unit 151. The second radiating patch 3 is used to extend the bandwidth. The second radiating patch 3, the second coupling unit 151 and the ground layer 13 constitute the second patch antenna.

[0058] The electronic device provided in this embodiment includes a housing 100 and a printed circuit board 1 located inside the housing 100. A first coupling unit 111 and a ground layer 13 on the printed circuit board 1, together with a first radiating patch 2 on the inner wall of the housing 100, form a first patch antenna. A second coupling unit 151 and a ground layer 13 on the printed circuit board 1, together with a second radiating patch 3 on the inner wall of the housing 100, form a second patch antenna. That is, the first patch antenna and the second patch antenna are integrated on both sides of the printed circuit board 1, respectively. The antenna structure composed of the first patch antenna and the second patch antenna does not occupy space inside the housing 100 other than the space occupied by the printed circuit board 1, thus achieving miniaturization of the electronic device. Furthermore, the patch antenna has the advantages of high gain and strong beam directivity. The radiating beam of the first patch antenna can point to one side of the printed circuit board 1, while the radiating beam of the second patch antenna can point to the other side of the printed circuit board 1, which can improve the coverage effect of radio frequency signals on both sides of the printed circuit board 1. Therefore, in the above-mentioned electronic devices, the antenna structure composed of the first patch antenna and the second patch antenna can achieve the advantages of high gain, strong beam directivity and good coverage performance while ensuring miniaturization of appearance.

[0059] Specifically, the printed circuit board 1 (PCB) can be a three-layer board. The first metal layer 11 can be the metal layer on the front side of the printed circuit board 1, and the second metal layer 15 can be the metal layer on the back side of the printed circuit board 1. The materials of the first metal layer 11, the second metal layer 15 and the ground layer 13 can be copper or other metal materials, which are not limited here.

[0060] The materials of the first dielectric layer 12 and the second dielectric layer 14 can be FR4 or other insulating materials. There are no restrictions here, and it depends on the actual situation.

[0061] Specifically, the thickness of the first dielectric layer 12 and the second dielectric layer 14 is approximately 1 mm.

[0062] In the aforementioned electronic device, since the metal layer on the printed circuit board 1 has a shielding effect, the radiation beam of the first patch antenna located on the front of the printed circuit board 1 can only point to the front, while the radiation beam of the second patch antenna located on the back of the printed circuit board 1 can only point to the back. The two patch antennas working together can avoid the influence of the printed circuit board 1 on the antenna radiation performance and achieve high gain coverage performance of the antenna structure.

[0063] Furthermore, since the area on the printed circuit board 1 for setting the antenna is limited, in order to reduce the size of the antenna on the printed circuit board 1, the size of the first coupling unit 111 and the second coupling unit 151 needs to be as small as possible, and the first dielectric layer 12 and the second dielectric layer 14 are relatively thin, which will result in a smaller antenna bandwidth.

[0064] In order to ensure the function of the built-in antenna, the bandwidth needs to be expanded. A first radiating patch 2 and a second radiating patch 3 opposite to the first coupling unit 111 can be set on the inner wall of the housing 100. The first radiating patch 2 and the second radiating patch 3 can realize the function of expanding the bandwidth without occupying the internal space of the housing 100.

[0065] Specifically, the materials of the first radiating patch 2 and the second radiating patch 3 can be sheet metal.

[0066] In this embodiment of the novel invention, the first metal layer 11 may further include a power feeding structure 112, which is connected to the edge of the first coupling unit 111.

[0067] The feed point of the first coupling unit 111 is located in the region where the first coupling unit 111 is connected to the feed structure 112.

[0068] In the above-mentioned electronic device, the power supply structure 112 is connected to the edge of the first coupling unit 111. The printed circuit board 1 transmits signals to the first coupling unit 111 through the power supply structure 112. The first coupling unit 111 is connected to the second coupling unit 151 to realize power distribution, which enables the radio frequency signal to cover the front and back of the printed circuit board 1 through two patch antennas respectively.

[0069] Specifically, the aforementioned power supply structure 112 can be a microstrip line, which can be connected to the middle region of the edge of the first coupling unit 111.

[0070] Specifically, the width of the microstrip line can be about 2.5 mm, the length can be about 7 mm, or it can be other sizes. There are no restrictions here, and it depends on the actual situation.

[0071] In this embodiment of the present invention, the printed circuit board 1 may further include a through hole 16 penetrating the first dielectric layer 12 and the second dielectric layer 14, and the through hole 16 is opposite to the feed point of the first coupling unit 111.

[0072] The feed point of the first coupling unit 111 is connected to the feed point of the second coupling unit 151 through the through hole 16.

[0073] The grounding layer 13 has a clearance hole, and the orthogonal projection of the through hole 16 on the grounding layer 13 is located in the clearance hole, so that the grounding layer 13 is insulated from the first coupling unit 111 and the second coupling unit 151.

[0074] In the aforementioned electronic device, the feed point of the first coupling unit 111 and the feed point of the second coupling unit 151 can be connected through the vias 16 on the first dielectric layer 12 and the second dielectric layer 14. This allows the first patch antenna and the second patch antenna to achieve power distribution through the vias 16, enabling the radio frequency signal to cover the front and back of the printed circuit board 1 respectively through the two patch antennas. The ground layer 13 is provided with clearance holes to prevent the metal material in the vias 16 from connecting with the ground layer 13.

[0075] In this embodiment of the present invention, the orthographic projection of the first coupling unit 111 on the ground layer 13 coincides with the orthographic projection of the second coupling unit 151 on the ground layer 13.

[0076] In the above-mentioned electronic device, the first coupling unit 111 and the second coupling unit 151 form a symmetrical structure with respect to the ground layer 13, which enables the power on the first coupling unit 111 and the second coupling unit 151 to be evenly distributed, and ensures that the radiation coverage of the first patch antenna and the second patch antenna is the same.

[0077] Optionally, the orthographic projection of the first coupling unit 111 on the ground layer 13 and the orthographic projection of the second coupling unit 151 on the ground layer 13 may not coincide. In this case, the radiation coverage range of the first patch unit and the radiation coverage range of the second patch unit are different, depending on the actual situation.

[0078] In this embodiment of the present invention, the shape of the orthographic projection of the first coupling unit 111 onto the ground layer 13 can be a circle or a polygon.

[0079] In the aforementioned electronic device, the pattern of the first coupling unit 111 can be circular or polygonal, and the pattern structure is simple and easy to manufacture.

[0080] like Figure 5 As shown, the pattern shape of the first coupling unit 111 can be circular; or, as shown... Figure 6 As shown, the pattern shape of the second coupling unit 151 can also be a square, or other equilateral polygons, etc. There are no restrictions here, and it depends on the actual situation.

[0081] The pattern shape of the second coupling unit 151 can be the same as the pattern shape of the first coupling unit 111, for example, as shown in the example. Figure 7 As shown, the pattern shape of the second coupling unit 111 can be circular, or, as shown in the figure, Figure 8 As shown, the pattern shape of the second coupling unit 151 can also be square. The edge of the second coupling unit 151 can be connected to the edge of the first coupling unit 111 through the through hole 16.

[0082] Specifically, if the pattern shape of the first coupling unit 111 and the second coupling unit 151 is circular, the diameter of the first coupling unit 111 and the second coupling unit 151 can be set to half the wavelength of the radio frequency signal in the medium; if the pattern shape of the first coupling unit 111 and the second coupling unit 151 is square, the side length of the first coupling unit 111 and the second coupling unit 151 can be approximately half the wavelength of the radio frequency signal in the medium.

[0083] In this embodiment of the present invention, the orthographic projection of the first radiating patch 2 on the printed circuit board 1 can coincide with the orthographic projection of the second radiating patch 3 on the printed circuit board 1.

[0084] The orthographic projection of the first radiating patch 2 on the printed circuit board 1 covers the first coupling unit 111, and the area of ​​the orthographic projection of the first radiating patch 2 on the ground plane is greater than the area of ​​the orthographic projection of the first coupling unit 111 on the ground plane.

[0085] In the above-mentioned electronic device, the pattern shape and size of the first radiating patch 2 can be the same as the pattern shape and size of the second radiating patch 3. The structure is simple and easy to manufacture. The orthographic projection of the first radiating patch 2 can cover the first coupling unit 111. The first coupling unit 111 and the first radiating patch 2 unit are fed through coupling. The orthographic projection of the second radiating patch 3 can also cover the second coupling unit 151. The second coupling unit 151 and the second radiating patch 3 are fed through coupling.

[0086] In the aforementioned electronic device, the orthographic projection of the first radiating patch 2 on the printed circuit board 1 and the orthographic projection of the second radiating patch 3 on the printed circuit board 1 may not coincide. This is not a restriction and depends on the actual situation.

[0087] In this embodiment of the invention, the shape of the orthographic projection of the first radiating patch 2 onto the printed circuit board 1 is a circle or a polygon.

[0088] In the aforementioned electronic device, the pattern shape of the first radiating patch 2 can be circular or polygonal, and its structure is simple and easy to manufacture.

[0089] For example, such as Figure 9 As shown, the pattern shape of the first radiating patch 2 can be circular; or, as shown... Figure 10 As shown, the pattern shape of the first radiating patch 2 can also be a square, or other equilateral polygons, etc. There are no restrictions here, and it depends on the actual situation.

[0090] The pattern shape of the second radiating patch 3 can be the same as that of the first radiating patch 2, for example, as shown in the image. Figure 9 As shown, the pattern shape of the second radiating patch 3 can be circular, such as... Figure 10As shown, the pattern shape of the second radiating patch 3 can also be square.

[0091] Specifically, the pattern shape of the first radiating patch 2 can be the same as the pattern shape of the first coupling unit 111, such as... Figure 7 and Figure 9 As shown, or as Figure 8 and Figure 10 As shown; the pattern shape of the first radiating patch 2 may also be different from the pattern shape of the first coupling unit 111. This is not limited here and depends on the actual situation.

[0092] In this embodiment of the invention, the center point of the orthographic projection of the first radiating patch 2 onto the ground layer 1 coincides with the center point of the orthographic projection of the first coupling unit 111 onto the ground layer 13. The center point of the orthographic projection of the second radiating patch 3 onto the printed circuit board 1 coincides with the center point of the orthographic projection of the second coupling unit 151 onto the ground layer 13.

[0093] In the aforementioned electronic device, the first coupling unit 111 and the first radiating patch 2 are fed through coupling, which can optimize the radiation coverage of the first patch antenna; the second coupling unit 151 and the second radiating patch 3 are fed through coupling, which can optimize the radiation coverage of the second patch antenna.

[0094] In this embodiment of the invention, the distance between the first radiating patch 2 and the first coupling unit 111 can be a first distance d1, and the distance between the second radiating patch 3 and the second coupling unit can be a second distance d2, wherein the first distance d1 is equal to the second distance d2. Figure 11 As shown.

[0095] In the aforementioned electronic device, the first spacing and the second spacing are equal, which can realize that the first patch antenna and the second patch antenna are symmetrical along the ground layer 13, so that the first patch antenna and the second patch antenna have the same functional characteristics, and ensure that the antenna has the same radiation effect on both sides of the printed circuit board 1.

[0096] Specifically, the first spacing d1 and the second spacing d2 may not be equal; this is not restricted here and depends on the actual situation.

[0097] Specifically, the first spacing d1 and the second spacing d2 can be 3mm to 5mm, or other spacing sizes, which can be set according to the antenna impedance matching situation.

[0098] In this embodiment of the utility model, a specific implementation method may be as follows: Figure 4 As shown, the antenna structure can be disposed on both sides of the printed circuit board 1, and is composed of a first coupling unit 111, a ground layer 13, a second coupling unit 151, a first radiating patch 2, and a second radiating patch 3.

[0099] The pattern shape of the first coupling unit 111 can be square, and the side length of the first coupling unit 111 can be about 13mm. The shape and size of the second coupling unit 151 are completely consistent with the shape and size of the first coupling unit 111. The first coupling unit 111 and the second coupling unit 151 form a symmetrical structure about the ground layer 13.

[0100] The pattern shape of the first radiating patch 2 can be square, and the side length of the first radiating patch 2 can be about 24mm. The shape and size of the second radiating patch 3 are completely consistent with the shape and size of the first radiating patch 2. The first spacing and the second spacing can be 3mm to 5mm. The second radiating patch 3 and the first radiating patch 2 form a symmetrical structure with respect to the grounding layer 13.

[0101] The first coupling unit 111, the first radiating patch 2, and the ground layer 13 constitute the first patch antenna, and the second coupling unit 151, the second radiating patch 3, and the ground layer 13 constitute the second patch antenna. Based on the size and positional spacing of each component in the first and second patch antennas, it can be calculated that the first and second patch antennas in this embodiment can operate in the WIFI 5G frequency band (5.15GHz-5.85GHz).

[0102] like Figure 12 The image shown is a 3D radiation pattern of the antenna in the aforementioned electronic device. Figure 12 As can be seen, the radiation beam of the first patch antenna can be pointed to the front of the printed circuit board 1, and the radiation beam of the second patch antenna can be pointed to the back of the printed circuit board 1. This can avoid the influence of the printed circuit board 1 on the antenna radiation range and ensure the coverage of the antenna radiation beam.

[0103] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An electronic device, comprising: The application relates to a printed circuit board. The printed circuit board comprises: a housing having an inner space; a printed circuit board located in the inner space, comprising: a first metal layer, a first dielectric layer, a ground layer, a second dielectric layer and a second metal layer stacked in sequence along the thickness direction; the first metal layer comprises a first coupling unit; the second metal layer comprises a second coupling unit opposite to the first coupling unit, and a feed point of the second coupling unit is connected to a feed point of the first coupling unit; the ground layer is insulated from the first coupling unit and the second coupling unit; a first radiating patch located on an inner wall of the housing and opposite to the first coupling unit, the first radiating patch being used for expanding bandwidth, the first radiating patch, the first coupling unit and the ground layer forming a first patch antenna; 2. The electronic device of claim 1, wherein, a second radiating patch located on the inner wall of the housing and opposite to the second coupling unit, the second radiating patch being used for expanding bandwidth, the second radiating patch, the second coupling unit and the ground layer forming a second patch antenna. The first metal layer further comprises a feed structure connected to an edge of the first coupling unit; 3. The electronic device of claim 1, wherein, the feed point of the first coupling unit is located in an area where the first coupling unit is connected to the feed structure. The printed circuit board further comprises a through hole penetrating through the first dielectric layer and the second dielectric layer, the through hole being opposite to the feed point of the first coupling unit; the feed point of the first coupling unit is connected to the feed point of the second coupling unit through the through hole; 4. The electronic device of any of claims 1-3, wherein, the ground layer has a relief hole, and a normal projection of the through hole on the ground layer is located in the relief hole, so that the ground layer is insulated from the first coupling unit and the second coupling unit.

5. The electronic device of claim 4, wherein, A normal projection of the first coupling unit on the ground layer coincides with a normal projection of the second coupling unit on the ground layer.

6. The electronic device of claim 4, wherein, The shape of the normal projection of the first coupling unit on the ground layer is circular or polygonal. A normal projection of the first radiating patch on the printed circuit board coincides with a normal projection of the second radiating patch on the printed circuit board; 7. The electronic device of claim 6, wherein, the normal projection of the first radiating patch on the printed circuit board covers the first coupling unit, and the area of the normal projection of the first radiating patch on the ground layer is larger than the area of the normal projection of the first coupling unit on the ground layer.

8. The electronic device of claim 6, wherein, The shape of the normal projection of the first radiating patch on the printed circuit board is circular or polygonal.

9. The electronic device of claim 6, wherein, The center point of the normal projection of the first radiating patch on the ground layer coincides with the center point of the normal projection of the first coupling unit on the ground layer.

10. The electronic device of claim 9, wherein, The distance between the first radiating patch and the first coupling unit is a first distance, the distance between the second radiating patch and the second coupling unit is a second distance, and the first distance is equal to the second distance. The first distance is 3mm to 5mm.

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