An electronic device

Abstract

The application provides an electronic device, and relates to the technical field of antennas. The electronic device comprises a conductive shell, the conductive shell comprising a first surface and a plurality of side walls, the plurality of side walls and the first surface enclosing a cavity, at least two adjacent side walls of the conductive shell being provided with a slit, so that the conductive shell can serve as a cavity antenna; a back shell, the back shell comprising a frame, the conductive shell being arranged at a target position of the back shell, at least part of the slit facing the frame, the cavity antenna being capable of receiving or radiating electromagnetic waves through the frame through the slit; wherein the length of the slit is 1 / 2 of the wavelength of a target radiation frequency.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and more particularly to an electronic device. Background Technology

[0002] Cavity antennas have become one of the mainstream antenna solutions for metal-bodied terminal devices due to their superior radiation performance in metallic environments. However, while cavity antennas offer better radiation performance, they occupy a larger area compared to traditional antennas, placing greater pressure on the overall hardware stacking of the device. Utility Model Content

[0003] This application provides an electronic device, comprising: a conductive housing, the conductive housing including a first surface and a plurality of sidewalls, the plurality of sidewalls and the first surface enclosing a cavity, and at least two adjacent sidewalls of the conductive housing having slits to enable the conductive housing to function as a cavity antenna; a back shell, the back shell including a frame, the conductive housing being disposed at a target position on the back shell, at least a portion of the slits facing the frame, and the cavity antenna being able to receive or radiate electromagnetic waves passing through the frame through the slits; wherein the length of the slits is half the wavelength of the target radiation frequency.

[0004] In some embodiments of this application, the conductive housing is a rectangular cuboid structure, including three sidewalls connected in sequence; the gap is three segments, and the three gap segments are respectively disposed on the three sidewalls; wherein, the back shell is rectangular, the conductive housing is disposed at one corner of the back shell, the frame is an insulating frame, and the gaps of the two sidewalls of the conductive housing facing the corner face the insulating frame.

[0005] In some embodiments of this application, the gaps on the three sidewalls are interconnected.

[0006] In some embodiments of this application, the electronic device further includes: a shielding member, wherein the conductive housing has three sidewalls with the gap, two of which face the frame, and the shielding member is disposed opposite to another sidewall of the conductive housing with the gap and facing away from the frame; the shielding member is capable of forming a shielding range for guiding the electromagnetic wave to a target direction.

[0007] In some embodiments of this application, the conductive housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected end to end; the gap includes a first segment, a second segment, a third segment, and a fourth segment, the four segments of the gap being respectively disposed on the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall.

[0008] In some embodiments of this application, the length of the first segment is equal to the length of the first sidewall, the length of the second segment is equal to the length of the second sidewall, the length of the third segment is less than the length of the third sidewall, and the length of the fourth segment is less than the length of the fourth sidewall; the first segment and the second segment are respectively positioned towards the frame.

[0009] In some embodiments of this application, the length of the third segment is equal to the length of the fourth segment; the first segment, the second segment, the third segment, and the fourth segment are interconnected.

[0010] In some embodiments of this application, there are two shielding elements, which are respectively disposed opposite to the third segment and the fourth segment.

[0011] In some embodiments of this application, the shielding element is conductive foam.

[0012] In some embodiments of this application, the electronic device further includes: a display screen disposed within the back cover, a conductive housing located between the back cover and the display screen, the first surface of the conductive housing facing the back cover; and a shielding member disposed between the back cover and the display screen, and electrically connected to both the back cover and the display screen. Attached Figure Description

[0013] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0014] Figure 1 A schematic diagram of the structure of an electronic device according to an embodiment of this application is shown.

[0015] Figure 2 The schematic diagram illustrates a structural schematic of one embodiment of the conductive housing in an electronic device according to an embodiment of this application;

[0016] Figure 3 The schematic diagram illustrates another embodiment of the conductive housing in the electronic device according to the present application.

[0017] Explanation of icon numbers:

[0018] 1. Conductive housing; 101. First surface; 102. Side wall; 103. Gap; 2. Back shell; 201. Frame; 3. Shielding component; 4. Display screen. Detailed Implementation

[0019] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0021] Example 1

[0022] This application provides an electronic device, such as... Figure 1 and Figure 2 As shown, it includes: a conductive housing 1, which includes a first surface 101 and a plurality of side walls 102, the plurality of side walls 102 and the first surface 101 enclosing a cavity, and at least two adjacent side walls 102 of the conductive housing 1 are provided with slits 103 so that the conductive housing 1 can serve as a cavity antenna; a back shell 2, which includes a frame 201, the conductive housing 1 being disposed at a target position of the back shell 2, at least a portion of the slits 103 facing the frame 201, and the cavity antenna being able to receive or radiate electromagnetic waves passing through the frame 201 through the slits 103; wherein, the length of the slits 103 is half the wavelength of the target radiation frequency.

[0023] The electronic device of this application can be a mobile phone, laptop computer, gaming device, or display device, etc. The electronic device includes a conductive housing 1, which can be a rigid metal structure made of conductive materials such as copper, gold, or silver. The conductive housing 1 includes a first surface 101 and multiple side walls 102, which together enclose a closed or semi-closed cavity. The first surface 101 can be the top or bottom plane of the cavity, and the multiple side walls 102 extend vertically or obliquely along the edge of the first surface 101, forming a metal wall structure.

[0024] A slot 103 is formed on at least two adjacent sidewalls 102 of the conductive housing 1. The cavity structure formed by the conductive housing 1 and the slots 103 on the sidewalls 102 together constitute a cavity antenna. The total length of all slots 103 is 1 / 2 (i.e., λ / 2) of the wavelength of the electromagnetic wave corresponding to the target radiation frequency, so as to achieve good impedance matching and efficient radiation for the target radiation frequency.

[0025] The back cover 2 can be an external protective structure for electronic devices (such as a mobile phone back cover or a laptop shell). Its edge has a frame 201, which can be made of plastic, ceramic, or metal. Plastic and ceramic, being insulating materials, have good electromagnetic wave penetration characteristics, allowing electromagnetic wave signals to pass directly through the frame 201 for transmission or reception. If the frame 201 is made of metal, since the size of the display screen 4 is smaller than the area enclosed by the frame 201 in conventional technologies, i.e., there is a gap between the side of the display screen 4 and the frame 201, the electromagnetic wave signals can be transmitted or received through the gap between the frame 201 and the display screen 4. The conductive housing 1 is fixed to a target position inside the back cover 2, for example, in an area close to the frame 201, avoiding occupying the stacking space in the central area of ​​the electronic device. Simultaneously, the gap 103 on the conductive housing 1 faces at least partially towards the frame 201, ensuring that the opening direction of the gap 103 is directly opposite the insulating area or the area between the frame 201 and the display screen. When a signal is fed into the cavity antenna, an electromagnetic field can be excited within the cavity, and this electromagnetic field is coupled to the external space through the gap 103 on the side wall 102.

[0026] By providing slots 103 on at least two adjacent sidewalls 102, the long slot 103 structure on a traditional single sidewall 102 can be replaced, thus reducing the required structural length of each sidewall 102. This significantly reduces the antenna's footprint on the plane while still meeting the 1 / 2 wavelength requirement. This compact layout allows the antenna to be placed in the edge area of ​​the electronic device, effectively avoiding spatial conflicts with core components such as batteries and motherboards, thereby alleviating the design pressure of internal stacking in the electronic device and improving space utilization.

[0027] In some embodiments, the conductive housing 1 is a rectangular cuboid structure, including three sidewalls 102 connected in sequence; the gap 103 is three segments, and the three gaps 103 are respectively disposed on the three sidewalls 102; wherein, the back shell 2 is rectangular, the conductive housing 1 is disposed at one corner of the back shell 2, the frame 102 is an insulating frame, and the gaps 103 of the two sidewalls 102 facing the corner of the conductive housing 1 face the insulating frame.

[0028] The conductive housing 1 adopts a rectangular cuboid structure, which can be adapted to the contour of the rectangular back shell 2 commonly used in electronic devices, such as matching the edge curvature and size of the rectangular body of devices like mobile phones, tablets, or laptops. The conductive housing 1 includes a first surface 101 and multiple side walls 102, with three side walls 102 continuously arranged along the edge of the first surface 101. The antenna slot 103 is divided into three segments, each corresponding to one of the side walls 102. The total length of the three slot segments 103 is equal to half the wavelength of the electromagnetic wave at the target radiation frequency (i.e., λ / 2), ensuring good radiation efficiency of the antenna at the target radiation.

[0029] The back shell 2 has a rectangular structure with an insulating frame along its edges. This insulating frame can be made of non-metallic materials such as plastic or ceramic, providing good electromagnetic wave penetration. The insulating frame can be continuously arranged along the four sides of the rectangular back shell 2, or only in the corner areas and part of the sides. The conductive shell 1 is fixed at one corner of the back shell 2. This location can be an unused area inside the electronic device away from major components such as the battery and motherboard, which helps avoid space conflicts. Since the conductive shell 1 is located at the corner of the back shell 2, the gaps 103 on the two adjacent sidewalls 102 at this corner must face the insulating frame of the corner area, that is, the opening direction of the gaps 103 should face the insulating material area. This ensures that electromagnetic waves can be directly radiated to the space outside the insulating frame through the gaps 103, or that electromagnetic signals can be effectively received from the outside. The other sidewall 102 with the gap 103 can be arranged perpendicular to or opposite to the insulating frame.

[0030] By dividing the slot 103 into three segments and placing them on three consecutive sidewalls 102, the length of each slot 103 is significantly shortened, and correspondingly, the required structural length of each sidewall 102 is also reduced. This effectively reduces the antenna's footprint in the planar direction while meeting the 1 / 2 wavelength requirement, further compressing the overall volume and improving space utilization. The conductive housing 1, with its rectangular cuboid structure, can closely fit the rectangular shape of the electronic device. Placing it at the corners of the back shell 2 not only avoids the high-density stacking space in the central area of ​​the electronic device but also makes full use of the unused edge areas, helping to optimize the overall internal layout.

[0031] In some embodiments, the gaps 103 on the three sidewalls 102 are interconnected.

[0032] like Figure 2 As shown, the three slots 103 on the conductive housing 1 are structurally interconnected, forming a continuous slot channel 103. The conductive housing 1 can be a rectangular cuboid structure, including a first surface 101 and three continuous sidewalls 102 extending along its edge, corresponding to the three adjacent sides of the rectangular outline. At the connection points of adjacent sidewalls 102 (i.e., corner areas), the slots 103 can be connected through smooth transition cuts or etching paths, so that the slots 103 originally located on the three sidewalls 102 are physically connected end to end, forming a continuous, zigzag or L-shaped slot structure 103. The total length L1+L2+L3 of the connected slots 103 is 1 / 2 (i.e., λ / 2) of the wavelength of the electromagnetic wave corresponding to the target radiation frequency, to satisfy the antenna resonance condition and ensure good radiation performance in the target frequency band.

[0033] By connecting the three slots 103 together, the electromagnetic field can be distributed more continuously along the slots 103, and the current path is smoother. This effectively avoids impedance abrupt changes or electric field concentration caused by structural breaks between the discrete slots 103, thereby reducing energy loss and improving the antenna's radiation efficiency and signal transmission stability.

[0034] In some embodiments, such as Figure 1 and Figure 2 As shown, the electronic device also includes: a shielding member 3, and a conductive housing 1 having three sidewalls 102 with gaps 103, two of which face the frame 201, and the shielding member 3 being disposed opposite to another sidewall 102 with gaps 103 on the conductive housing 1 facing away from the frame 201; the shielding member 3 can form a shielding range for guiding electromagnetic waves to the target direction.

[0035] The conductive housing 1 can be a rectangular cuboid structure adapted to the rectangular back shell 2, including a first surface 101 and three sidewalls 102 connected sequentially along its edge. The three slits 103 are structurally interconnected, forming a continuous slit channel 103, the total length of which is half the wavelength of the electromagnetic wave corresponding to the target radiation frequency. Two of the sidewalls 102 are positioned facing the edge frame 201 of the back shell 2, and the openings of the slits 103 on them all point towards this edge frame 201. Electromagnetic waves can directly couple through these slits 103 and penetrate the edge frame 201, achieving effective signal transmission with the external space.

[0036] However, because the rectangular conductive housing 1 is located in the geometry of the corner of the electronic device, the third sidewall 102 naturally moves away from and away from the frame 201, facing the interior of the electronic device. Therefore, the opening direction of the gap 103 on this sidewall 102 also faces the area of ​​internal components such as the motherboard and battery, rather than the frame 201. If this gap 103 directly radiates electromagnetic waves outward, some energy will propagate into the interior of the electronic device and may be absorbed or reflected by internal metal components (such as the battery casing, shielding cover, motherboard ground plane, etc.), causing radiation loss; at the same time, it may also cause electromagnetic interference to sensitive circuits, affecting the normal operation of the device.

[0037] To address the aforementioned issues, this application further includes a shielding component 3. This shielding component 3 can be a conductive structure, such as a metal sheet, metal baffle, or metal frame, possessing excellent electromagnetic shielding capabilities. The shielding component 3 is positioned opposite to the side wall 102 facing away from the frame 201, fixed to the inner side of the back cover 2 or a mounting bracket inside the electronic device, and maintains a predetermined distance from the side wall 102, forming an electromagnetic reflection barrier.

[0038] When the conductive housing 1 functions as an antenna, the generated electromagnetic waves propagate along the connecting slot 103. Electromagnetic waves attempting to radiate into the electronic device from the slot 103 on the side wall 102 facing away from the frame 201 are effectively blocked by the shielding member 3. Reflected by the shielding member 3, these electromagnetic waves cannot continue to propagate inward and are confined within the shielding area, thus being guided to the other two side walls 102 facing the frame 201. This allows most of the electromagnetic energy to radiate outward through the slots 103 on the two side walls 102 facing the frame 201, achieving concentrated guidance of the electromagnetic waves towards the target direction. The target direction is the space outside the frame 201, which helps to improve signal strength and reduce path loss.

[0039] By setting up shielding component 3, the leakage of electromagnetic waves into the electronic device is significantly suppressed, reducing the risk of interference to the internal hardware. It also improves the radiation efficiency and directivity of the antenna and optimizes the overall radio frequency performance.

[0040] In some embodiments, the shielding element 3 is conductive foam.

[0041] Conductive foam is a conductive structure formed by electroplating (such as copper or nickel plating) or covering the surface with conductive cloth, using sponge as the base material. It combines the flexibility and compressibility of sponge with the electromagnetic shielding properties of metallic materials. The conductive foam can be adhered to the motherboard with adhesive backing, positioned near the corresponding location of the sidewall 102, parallel and opposite to the sidewall 102, forming a stable electromagnetic shielding barrier. The size of the conductive foam can be matched to the area of ​​the sidewall 102 facing away from the frame 201, ensuring complete coverage of the gap 103 area of ​​the sidewall 102, thereby effectively shielding electromagnetic waves radiated outward from the side gap 103.

[0042] The flexibility of the conductive foam allows it to maintain its relative position to the sidewall 102 even with minor dimensional deviations during electronic device assembly, preventing structural interference caused by hard contact. Simultaneously, when the electronic device is subjected to minor impacts or drops, the conductive foam absorbs the impact force, reducing vibration transmission between the conductive housing 1 and the back shell 2, indirectly improving the structural stability of the conductive housing 1 as a cavity antenna.

[0043] In some embodiments, such as Figure 1 As shown, the electronic device also includes: a display screen 4, which is disposed inside the back shell 2; a conductive housing 1 is located between the back shell 2 and the display screen 4, with the first surface 101 of the conductive housing 1 facing the back shell 2; and a shielding member 3 is disposed between the back shell 2 and the display screen 4, and is electrically connected to the back shell 2 and the display screen 4 respectively.

[0044] The back cover 2 can be the rear shell of an electronic device, such as the back cover of a mobile phone; the display screen 4 can be the display component on the front of the electronic device, such as an OLED screen. Together, they enclose the internal space of the electronic device to accommodate core components such as the motherboard and battery. The size of the display screen 4 is smaller than the area enclosed by the frame 201, meaning there is a gap between the side of the display screen 4 and the frame 201. The conductive shell 1 and the shielding member 3 are both disposed in the internal area between the back cover 2 and the display screen 4.

[0045] The back shell 2 also includes a back plate, which can be made of metal. The first surface 101 of the conductive shell 1 can be electrically connected to the metal back plate. The second surface of the conductive shell 1 opposite to the first surface 101 or the side wall 102 of the conductive shell 1 can be electrically connected to the conductive layer (such as a wiring layer or grounding layer) on the display screen 4, thereby forming part of the antenna system. The shielding component 3 can be fixed and conductive through the conductive contacts or conductive adhesive preset on the inside of the back shell 2, thereby achieving electrical connection with the metal part of the back shell 2, i.e., grounding. At the same time, the display screen 4 can be provided with a metal support frame or an internal conductive layer. The shielding component 3 can achieve electrical connection with the display screen 4 by connecting to the metal frame or conductive layer.

[0046] By simultaneously connecting the back cover 2 and the display screen 4, the shield 3 forms a grounding path, achieving reliable grounding. In the grounded state, the shield 3 has a more stable ability to reflect and absorb electromagnetic waves, and can more effectively block electromagnetic waves radiated from the side of the conductive housing 1 away from the frame 201, preventing them from leaking into the electronic device, thereby improving the directivity of the antenna radiation direction and reducing internal electromagnetic interference.

[0047] Example 2

[0048] The electronic device provided in this application differs from that in Embodiment 1 in that the implementation of the gap 103 on the conductive housing 1 is different.

[0049] In some embodiments, such as Figure 3 As shown, the conductive housing 1 includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected end to end; the gap 103 includes a first segment, a second segment, a third segment, and a fourth segment, and the four segments of the gap 103 are respectively disposed on the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall.

[0050] The conductive housing 1 can be a rectangular cuboid structure, including a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected end to end, which together with the first surface 101 form a closed or semi-closed cavity structure. Corresponding to these four sidewalls 102, the slots 103 are divided into four segments, namely the first segment, the second segment, the third segment, and the fourth segment, with each slot 103 corresponding to one sidewall 102. The total length L1+L2+L3+L4 of the four slots 103 is equal to 1 / 2 (i.e., λ / 2) of the wavelength of the electromagnetic wave corresponding to the target radiation frequency, so as to satisfy the resonance condition of the antenna.

[0051] By distributing the slots 103 across the four sidewalls 102, each sidewall 102 only needs to support approximately 1 / 4 of the total slot length 103, significantly reducing the physical size of a single slot 103 segment. Correspondingly, the required structural length of each sidewall 102 is also reduced, resulting in a smaller projected area of ​​the conductive housing 1 on the plane. This effectively compresses the overall space occupied by the antenna while still meeting the 1 / 2 wavelength requirement, reducing the need for internal stacking space in electronic equipment and further improving space utilization.

[0052] In some embodiments, the length of the first segment is equal to the length of the first sidewall, the length of the second segment is equal to the length of the second sidewall, the length of the third segment is less than the length of the third sidewall, and the length of the fourth segment is less than the length of the fourth sidewall; the first segment and the second segment are respectively positioned towards the frame 201.

[0053] The conductive housing 1 includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, which are connected end-to-end. The slot 103 is divided into four segments: the first segment, the second segment, the third segment, and the fourth segment, each located on a corresponding sidewall 102. The first slot segment has the same length as the first sidewall and extends through it; the second slot segment also has the same length as the second sidewall and extends through it. The third and fourth slot segments have shorter lengths than the third and fourth sidewalls, respectively, and are only located in localized areas of the sidewalls 102. This localized slotting design on the sidewalls 102 preserves a portion of the sidewall structure as mechanical support for the conductive housing 1, improving the overall rigidity and stability of the structure. The total length of the four slot segments 103 satisfies half the wavelength (λ / 2) of the electromagnetic wave corresponding to the target radiation frequency, ensuring antenna resonance in this frequency band.

[0054] The conductive housing 1 is located in the corner area of ​​the back shell 2, with its frame 201 corresponding to the orientation of the first and second sidewalls. The first and second gaps, penetrating the entire sidewall 102, maximize the radiation area, thus jointly forming the main radiating surface of the antenna. Electromagnetic waves can radiate outwards through the frame 201 in these two directions, achieving good signal transmission and reception. The third and fourth gaps are shorter, and the sidewalls 102 they occupy face away from the frame 201, towards the interior of the electronic device. By shortening the length of the gaps 103 in these two directions, electromagnetic wave radiation into the electronic device can be effectively reduced, minimizing electromagnetic leakage and potential interference to metal components such as the motherboard and battery.

[0055] In some embodiments, the length of the third segment is equal to the length of the fourth segment; the first segment, the second segment, the third segment, and the fourth segment are interconnected.

[0056] The length of the first slit is equal to that of the first sidewall, and it extends through the entire wall. The length of the second slit is equal to that of the second sidewall, and it also extends through the entire wall. The lengths of the third and fourth slits are equal, and they are respectively located locally on their respective sidewalls 102. The four slits 103 are connected at the corners of the sidewalls 102, forming a continuous slit channel 103.

[0057] A continuous ring radiation path is formed by the continuous slots 103 distributed around the four sidewalls 102. The continuous slots 103 effectively avoid local field strength unevenness and multi-point resonance phenomena caused by the discontinuity of the slots 103, reduce energy reflection and loss at the connection points, and improve the overall radiation efficiency of the antenna. In addition, the third and fourth slots are of equal length and symmetrically distributed, which makes the auxiliary radiation capability in these two directions consistent, the radiation field distribution is more symmetrical, significantly improves the coverage uniformity of the antenna in multiple directions, and enhances the stability of the signal.

[0058] Furthermore, through the slot 103 structure distributed and interconnected on the four sidewalls 102, this multi-segment coupled and continuously distributed slot 103 structure can introduce multiple resonant paths and electromagnetic coupling effects, effectively widening the impedance bandwidth of the antenna. Compared with the traditional single-slot 103 cavity antenna, it has richer resonant modes and a wider frequency response, thus covering the Wi-Fi 5GHz band.

[0059] In some embodiments, such as Figure 3 As shown, there are two shielding components 3, which are respectively positioned opposite to the third and fourth segments.

[0060] The two shielding components 3 can be made of conductive foam. Since the third and fourth gaps are located on the two side walls 102 facing away from the frame 201 and towards the inside of the electronic device, the first shielding component 3 is positioned opposite the third gap, and the second shielding component 3 is positioned opposite the fourth gap. The two shielding components 3 together form an electromagnetic shielding range for the internal radiation direction.

[0061] When the cavity antenna is working, electromagnetic waves are transmitted along the connected annular gaps 103. When electromagnetic energy attempts to radiate into the electronic device through the third and fourth gaps, it is effectively blocked by the corresponding shielding components 3, preventing interference with sensitive internal components and avoiding electromagnetic interference or signal distortion. Furthermore, the electromagnetic energy reflected by the shielding components 3 is not absorbed or dissipated, but continues to propagate along the annular gaps 103 and flows towards the first and second gaps, merging with the electromagnetic energy in the main radiation direction. This allows most of the energy to pass through the first and second gaps and be efficiently radiated outwards through the frame 201.

[0062] The two shielding elements 3 not only suppress electromagnetic leakage into the electronic device, but also enhance the signal strength in the main radiation direction, which helps to reduce path loss and improve the overall radiation efficiency and communication performance of the antenna.

[0063] The electronic device provided in this application achieves miniaturization and broadband antenna structure. Compared with traditional antenna designs, the antenna in this application reduces the planar area occupied by approximately 51%, significantly improving space utilization. Simultaneously, the antenna bandwidth is significantly improved, effectively covering the Wi-Fi 5GHz band (5.15–5.85GHz), meeting the requirements of high-speed wireless communication.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device, comprising: include: A conductive housing includes a first surface and multiple sidewalls, the multiple sidewalls and the first surface enclosing a cavity, and at least two adjacent sidewalls of the conductive housing are provided with slits so that the conductive housing can serve as a cavity antenna; A back shell, the back shell including a frame, the conductive housing disposed at a target position on the back shell, at least a portion of the slit facing the frame, and the cavity antenna capable of receiving or radiating electromagnetic waves passing through the frame through the slit; The length of the slit is equal to half the wavelength of the target radiation frequency.

2. The electronic device according to claim 1, characterized in that, The conductive housing is a rectangular cuboid structure, including three side walls connected in sequence; The gap is divided into three sections, and the three sections are respectively provided on the three side walls; The back shell is rectangular, the conductive shell is located at one corner of the back shell, the frame is an insulating frame, and the gaps in the two sidewalls of the conductive shell facing the corner face the insulating frame.

3. The electronic device according to claim 2, characterized in that, The gaps on the three sidewalls are interconnected.

4. The electronic device of claim 1, wherein, Also includes: The shielding component has three sidewalls with the gaps on the conductive housing, two of which face the frame, and the shielding component is disposed opposite to another sidewall on the conductive housing with the gaps and facing away from the frame. The shielding component can form a shielding range to guide the electromagnetic waves to the target direction.

5. The electronic device according to claim 4, characterized in that, The conductive housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence from end to end; The gap includes a first segment, a second segment, a third segment, and a fourth segment, which are respectively disposed on the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall.

6. The electronic device according to claim 5, characterized in that, The length of the first segment is equal to the length of the first sidewall, the length of the second segment is equal to the length of the second sidewall, the length of the third segment is less than the length of the third sidewall, and the length of the fourth segment is less than the length of the fourth sidewall. The first segment and the second segment are respectively positioned facing the border.

7. The electronic device according to claim 6, characterized in that, The length of the third segment is equal to the length of the fourth segment; The first segment, the second segment, the third segment, and the fourth segment are interconnected.

8. The electronic device according to claim 7, characterized in that, There are two shielding components, which are respectively positioned opposite to the third segment and the fourth segment.

9. The electronic device according to claim 4, characterized in that, The shielding component is conductive foam.

10. The electronic device of claim 4, wherein, Also includes: The display screen is disposed inside the back shell, and the conductive housing is located between the back shell and the display screen, with the first surface of the conductive housing facing the back shell; The shielding member is arranged between the back shell and the display screen and is electrically connected with the back shell and the display screen respectively.

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