Electronic device

Abstract

The present disclosure provides an electronic device, and relates to the technical field of electronic devices. The electronic device comprises a middle frame, a first radiator and a second radiator. The middle frame comprises a first frame and a second frame arranged oppositely, the first radiator is arranged on the first frame, and the second radiator is arranged on the second frame. The first radiator comprises a feed point and a first grounding point, and the second radiator comprises a second grounding point. The feed point is used for receiving a radio frequency signal to excite the first radiator to generate electromagnetic radiation. The first grounding point and the second grounding point are grounded through the middle frame, so that the second radiator constitutes a parasitic radiator of the first radiator. By arranging the first radiator and the second radiator on the opposite frames of the middle frame of the electronic device respectively, and using the middle frame to realize the grounding connection of the two radiators, the second radiator works cooperatively as the parasitic radiator of the first radiator, and the antenna efficiency is improved at a long distance without increasing additional layout space.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more specifically, to an electronic device. Background Technology

[0002] With the rapid development of information technology, mobile communication technology has undergone five generations of evolution. Mobile device antennas need to cover multiple communication frequency bands such as 2G, 3G, 4G, and 5G, requiring extensive antenna integration and resulting in a significant bulky footprint. Large and bulky mobile devices can no longer meet users' demands for portability and a superior user experience; therefore, thinner and smaller designs have become the development trend for mobile devices.

[0003] However, as mobile devices become thinner and smaller, the number of components around the antenna increases, leading to a more compact antenna design environment. How to improve antenna efficiency under extreme conditions has become a key focus and challenge for the industry. Utility Model Content

[0004] This disclosure provides an electronic device that at least partially solves the problems in the related art.

[0005] According to a first aspect of the present disclosure, an electronic device is provided, comprising: a mid-frame, the mid-frame including a first border and a second border disposed opposite to each other; a first radiator disposed on the first border, the first radiator including a feed point and a first ground point; and a second radiator disposed on the second border, the second radiator including a second ground point; wherein the feed point is used to receive a radio frequency signal to excite the first radiator to generate electromagnetic radiation; the first ground point and the second ground point are grounded through the mid-frame, such that the second radiator constitutes a parasitic radiator of the first radiator.

[0006] In some possible implementations, the second radiator includes a tuning point electrically connected to a switching circuit; the switching circuit includes a switching switch and multiple switching branches, the common terminal of the switching switch is electrically connected to the tuning point, and the multiple switching terminals of the switching switch are respectively electrically connected to the multiple switching branches; wherein, the switching circuit is configured to adjust the resonant frequency of the second radiator by switching different switching branches to adapt to the operating frequency band of the first radiator.

[0007] In some possible implementations, when all of the plurality of switch branches are in the off state, the resonant frequency of the second radiator is the first resonant frequency, so as to match the B8 frequency band of the first radiator.

[0008] In some possible implementations, the plurality of switch branches include a first switch branch, and the plurality of switching terminals include a first switching terminal; a first capacitor is provided on the first switch branch, one end of the first capacitor is electrically connected to the first switching terminal, and the other end of the first capacitor is grounded; wherein, when the first switch branch is in the conducting state, the resonant frequency of the second radiator is a second resonant frequency to adapt to the B5 frequency band of the first radiator.

[0009] In some possible implementations, the plurality of switch branches include a second switch branch, and the plurality of switching terminals include a second switching terminal; a second capacitor is provided on the second switch branch, one end of the second capacitor is electrically connected to the second switching terminal, and the other end of the second capacitor is grounded; wherein, when the second switch branch is in the conducting state, the resonant frequency of the second radiator is a third resonant frequency to adapt to the B28 frequency band of the first radiator.

[0010] In some possible implementations, the first radiator includes a first open end and a first connection end; the feed point is located near the first open end, the first grounding point is located at the first connection end, and the first grounding point is grounded through the middle frame.

[0011] In some possible implementations, the second radiator includes a second open end and a second connection end; the tuning point is located near the second open end, the second grounding point is located at the second connection end, and the second grounding point is grounded through the middle frame.

[0012] In some possible implementations, the length of the first radiator is in the range of 45 mm to 49 mm.

[0013] In some possible implementations, the length of the second radiator ranges from 38 mm to 42 mm.

[0014] In some possible implementations, the distance between the power supply point and the first opening end ranges from 9 mm to 9.8 mm.

[0015] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0016] By setting a first radiator and a second radiator on opposite edges of the electronic device frame and using the frame to ground the first and second radiators, the second radiator works as a parasitic radiator of the first radiator. This achieves improved antenna efficiency over long distances without increasing additional layout space, adapts to the requirements of compact structure design for the development of thinner and lighter mobile devices, improves the overall performance of electronic devices, and optimizes the user experience.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a structural diagram of an electronic device according to an exemplary embodiment of the present disclosure.

[0020] Figure 2 This is a schematic diagram of a switching circuit according to an exemplary embodiment of the present disclosure.

[0021] Figure 3 This is a schematic diagram of the S-parameters of an electronic device antenna in different frequency bands, according to an exemplary embodiment of the present disclosure.

[0022] Figures 4 to 6 This is a schematic diagram illustrating the radiation efficiency of an electronic device antenna according to an exemplary embodiment of the present disclosure.

[0023] Figure 7 This is a block diagram illustrating an electronic device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0024] Exemplary embodiments of this disclosure will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The embodiments described below, which are examples of some of the embodiments of this disclosure, do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0026] The specific implementation methods of the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0027] Figure 1 This is a structure of an electronic device according to an exemplary embodiment of the present disclosure. Figure 1 For example, electronic devices can be tablets, mobile phones, e-readers, MP3 players, MP4 players, laptops, in-vehicle systems or desktop computers, portable terminals, laptop terminals, desktop terminals, action cameras, drones, monitor cameras, and similar products. Figure 1 The electronic device includes: a middle frame 100, a first radiator 200, and a second radiator 300.

[0028] The middle frame 100 includes a first border 110 and a second border 120 that are disposed opposite to each other. A first radiator 200 is disposed on the first border 110, and a second radiator 300 is disposed on the second border 120.

[0029] The first radiator 200 includes a feed point 210 and a first ground point 220. The second radiator 300 includes a second ground point 310. The feed point 210 is used to receive radio frequency signals to excite the first radiator 110 to generate electromagnetic radiation. The first ground point 220 and the second ground point 310 are grounded through the middle frame 100, so that the second radiator 300 constitutes a parasitic radiator of the first radiator 200.

[0030] In this embodiment, the middle frame 100, as an important structural component of the electronic device, may include a first frame 110 and a second frame 120 disposed opposite to each other. The first radiator 200 is disposed on the first frame 110 and serves as the main radiator, responsible for receiving radio frequency signals and converting them into electromagnetic waves for transmission or reception; the second radiator 300 is disposed on the second frame 120 and is not directly connected to the power supply signal, but participates in the radiation process through electromagnetic coupling.

[0031] In one possible implementation, the first frame 110 and the second frame 120 may be made of a metallic material, and the first radiator 200 and the second radiator 300 may each be formed by a local area of ​​the corresponding frame. In another possible implementation, the first frame 110 and the second frame 120 may be made of a non-metallic material, and the first radiator 200 and the second radiator 300 may be metallic structures, respectively attached to the inner sides of the first frame 110 and the second frame 120.

[0032] In this embodiment, the first radiator 200 serves as the main radiator and is connected to the radio frequency signal source via the feed point 210, responsible for receiving signals from the internal radio frequency circuitry of the device. Simultaneously, the first ground point 220 of the first radiator 200 is grounded through the middle frame 100, forming a current loop with the ground plane of the middle frame 100 via the first ground point 220. This structure of the first radiator 200 is similar to an inverted-F antenna (IFA) design.

[0033] The second radiator 300 acts as a parasitic unit, with its second grounding point 310 grounded through the middle frame 100, i.e., coupled to the ground plane of the middle frame 100 through the second grounding point 310. Since both the first grounding point 220 and the second grounding point 310 are grounded through the middle frame 100, a potential difference is formed between the first grounding point 220 and the second grounding point 310, driving current to flow in the second radiator 300, enabling the second radiator 300 to work collaboratively as a parasitic radiator.

[0034] like Figure 1 As shown, in addition to the first border 110 and the second border 120 that are arranged opposite to each other, the middle frame 100 may also include a third border 130 and a fourth border 140 that are arranged opposite to each other. That is, the middle frame 100 may include the first border 110, the third border 130, the second border 120, and the fourth border 140 arranged sequentially. In one possible implementation, the first border 110 and the second border 120 may be the side borders of the electronic device, the third border 130 may be the top border of the electronic device, and the fourth border 140 may be the bottom border of the electronic device.

[0035] The layout of the first radiator 200 and the second radiator 300 can be flexibly adjusted according to the structure of the electronic device to rationally arrange the positions of each radiator in a compact structure. In one possible implementation, such as Figure 1 As shown, the first radiator 200 is disposed on the first frame 110 and close to the third frame 130, and the second radiator 300 is disposed on the opposite second frame 120 and close to the fourth frame 140, forming a diagonal distribution. In another possible embodiment, the middle frame 100 includes a first frame 110, a third frame 130, a second frame 120, and a fourth frame 140 disposed sequentially, wherein the first radiator 200 is disposed on the first frame 110 and close to the third frame 130, and the second radiator 300 is disposed on the opposite second frame 120 and close to the third frame 130. That is, the first radiator 200 and the second radiator 300 are disposed on two opposite frames, but both are close to the frame between these two frames.

[0036] In this embodiment, the first radiator 200 and the second radiator 300 can be flexibly configured according to the space constraints, internal component distribution and antenna performance requirements of the electronic device. Regardless of the configuration, the first radiator 200 and the second radiator 300 can achieve good electromagnetic coupling through grounding of the middle frame 100, so that the second radiator 300 acts as a parasitic radiator of the first radiator 200, thereby improving the design freedom and structural adaptability while ensuring antenna performance.

[0037] The electronic device of this disclosure provides a first radiator 200 and a second radiator 300 on opposite sides of the frame 100 of the electronic device, and uses the frame 100 to ground the first radiator 200 and the second radiator 300. This allows the second radiator 300 to work in conjunction with the first radiator 200 as a parasitic radiator. This achieves improved antenna efficiency over long distances without increasing additional layout space, adapts to the requirements of compact structure design for the development of thinner and lighter mobile devices, improves the overall performance of the electronic device, and optimizes the user experience.

[0038] In some embodiments of this disclosure, the length of the first radiator 200 ranges from 45 mm to 49 mm.

[0039] The length of the first radiator 200 ranges from 45 mm to 49 mm. This radiator is designed as a low-band (LB) antenna to support the B5, B8, and B28 frequency bands. The B5 band has a frequency range of 824 MHz to 894 MHz, the B8 band has a frequency range of 880 MHz to 960 MHz, and the B28 band has a frequency range of 703 MHz to 803 MHz. In one possible implementation, the length of the first radiator 200 is 47 mm.

[0040] In some embodiments of this disclosure, the length of the second radiator 300 ranges from 38 mm to 42 mm.

[0041] The second radiator 300, acting as a parasitic radiator, does not directly feed electricity but participates in the radiation process through electromagnetic coupling. The length of the second radiator 300 is designed to be in the range of 38mm to 42mm. In one possible embodiment, the length of the second radiator 300 is 40mm.

[0042] The electronic device of this disclosure controls the length of the first radiator 200 within the range of 45mm to 49mm, which can achieve good impedance matching and multi-band coverage performance, especially achieving a good balance among the B5, B8, and B28 frequency bands. Furthermore, controlling the length of the second radiator 300 within the range of 38mm to 42mm allows it to improve radiation efficiency without interfering with the operation of the main radiator.

[0043] In some embodiments of this disclosure, such as Figure 1 As shown, the first radiator 200 includes a first open end 230 and a first connecting end. The feed point 210 is located near the first open end 230, and the first ground point 220 is located at the first connecting end. The first ground point 220 is grounded through the middle frame 100.

[0044] The first opening end 230 of the first radiator 200 can be understood as the end with a gap. The feed point 210 is located close to the first opening end 230, that is, the feed point 210 is located near the first opening end 230.

[0045] In some embodiments of this disclosure, the distance between the power supply point 210 and the first opening end 230 ranges from 9 mm to 9.8 mm. In one possible embodiment, the distance between the power supply point 210 and the first opening end 230 is 9.4 mm.

[0046] The function of the feed point 210 is to input the radio frequency signal into the first radiator 200 to excite it to generate electromagnetic waves. The distance between the feed point 210 and the first opening end 230 is set to a range of 9 mm to 9.8 mm, which helps to optimize the current distribution and ensure that the radio frequency signal can efficiently excite the first radiator 200 to generate electromagnetic waves.

[0047] The first connection end of the first radiator 200 can be understood as a specific area where the first radiator 200 realizes the grounding function. The first grounding point 220 is located at the first connection end and is used to guide the current into the middle frame 100, thereby completing the current loop of the antenna.

[0048] In one possible implementation, such as Figure 1 As shown, the middle frame 100 includes not only the first border 110, the second border 120, the third border 130 and the fourth border 140, but also the middle plate 150. These borders surround the edge of the middle plate 150 and together constitute the frame structure of the electronic device.

[0049] The middle plate 150 can serve as the ground plane for electronic devices, and the first grounding point 220 of the first radiator 200 is connected to the middle plate 150. Current flows from the feed point 210 into the first radiator 200, flows along the radiator to the first grounding point 220, and is electrically connected to the middle plate 150 through the first grounding point 220, thus completing the current loop.

[0050] In the electronic device of this disclosure, the feed point 210 is located on the first radiator 200 near the first opening end 230, which helps to excite a more efficient electromagnetic wave mode within the operating frequency band of the first radiator 200. Because there is a gap in the first opening end 230, current distribution in this area more easily forms a good radiation path, thereby significantly improving the antenna's radiation efficiency. Furthermore, the first ground point 220 is located at the first connection end and grounded via the middle frame 100, providing a stable current return path for the first radiator 200.

[0051] In some embodiments of this disclosure, such as Figure 1 As shown, the second radiator 300 includes a tuning point 320, which is electrically connected to a switching circuit 400.

[0052] The second radiator 300, acting as a parasitic radiator of the first radiator 200, is electrically connected to a switching circuit 400 via its tuning point 320. By using the switching circuit 400, dynamic control of the operating state of the second radiator 300 can be achieved. For example, under different communication frequency bands of the first radiator 200, the switching circuit 400 can be turned on or off according to actual needs, adjusting the resonant frequency of the second radiator 300 to match the operating frequency band of the first radiator 200.

[0053] In some embodiments of this disclosure, such as Figure 1 As shown, the second radiator 300 includes a second open end 330 and a second connecting end. The tuning point 320 is located near the second open end 330, and the second grounding point 310 is located at the second connecting end. The second grounding point 310 is grounded through the middle frame 100.

[0054] The second open end 330 of the second radiator 300 can be understood as an end with a slit. This slit structure helps to form a specific current distribution, thereby affecting the electromagnetic characteristics of the second radiator 300. Since the tuning point 320 is located close to the second open end 330, the current distribution is stronger and the electromagnetic coupling effect is more obvious. Therefore, setting the tuning point 320 in the vicinity of the second open end 330 is beneficial for achieving precise control of the resonant frequency of the second radiator 300.

[0055] The second connection end of the second radiator 300 can be understood as a specific area where the second radiator 300 realizes the grounding function. The second grounding point 310 is located at the second connection end and is used to guide the current into the middle frame 100, thereby completing the current loop of the antenna.

[0056] In one possible implementation, such as Figure 1 As shown, the middle frame 100 includes not only the first border 110, the second border 120, the third border 130 and the fourth border 140, but also the middle plate 150. These borders surround the edge of the middle plate 150 and together constitute the frame structure of the electronic device.

[0057] The intermediate plate 150 serves as the ground plane for electronic devices. The second grounding point 310 of the second radiator 300 is connected to the intermediate plate 150, and the first grounding point 220 of the first radiator 200 is also connected to the intermediate plate 150. Current flows from the feed point 210 into the first radiator 200, along the radiator to the first grounding point 220, and through this first grounding point 220, it achieves an electrical connection with the intermediate plate 150, completing the current loop. The second radiator 300 is grounded to the intermediate plate 150 through the second grounding point 310, forming a parasitic radiator. Due to the potential difference between the first grounding point 220 and the second grounding point 310, current can flow on the second radiator 300, enabling the second radiator 300 to work collaboratively and improving the overall efficiency of the antenna.

[0058] In the electronic device of this disclosure, the tuning point 320 is located on the second radiator 300 near the second opening end 330, which facilitates precise control of the resonant frequency of the second radiator 300. Furthermore, the second grounding point 310 is located at the second connection end and grounded via the middle frame 100, thereby enabling the second radiator 300 to form a parasitic radiator.

[0059] Figure 2 This is a schematic diagram of a switching circuit according to an exemplary embodiment of the present disclosure. Figure 2 As shown, the switching circuit 400 includes a switching switch 410 and multiple switching branches. The common terminal of the switching switch 410 is electrically connected to the tuning point 320, and the multiple switching terminals of the switching switch 410 are respectively electrically connected to the multiple switching branches. The switching circuit 400 is configured to adjust the resonant frequency of the second radiator 300 by switching different switching branches to match the operating frequency band of the first radiator 200.

[0060] In this embodiment of the disclosure, the second radiator 300 acts as a parasitic radiator. By connecting different switch branches at the tuning point 320, the effective electrical length of the second radiator 300 can be changed, thereby adjusting its resonant frequency.

[0061] In some embodiments of this disclosure, when multiple switch branches are in the open state, the resonant frequency of the second radiator 300 is the first resonant frequency, so as to match the B8 frequency band of the first radiator 200.

[0062] When the first radiator 200 operates in the B8 frequency band, multiple control switch branches are in the open state. At this time, the resonant frequency of the second radiator 300 is the first resonant frequency, such as 1.02 GHz, which matches the operating frequency of the first radiator 200 in the B8 frequency band.

[0063] In some embodiments of this disclosure, such as Figure 3As shown, the multiple switch branches include a first switch branch 420, and the multiple switching terminals include a first switching terminal. A first capacitor C1 is provided on the first switch branch 420. One end of the first capacitor C1 is electrically connected to the first switching terminal, and the other end of the first capacitor C1 is grounded.

[0064] When the first switch branch 420 is in the conducting state, the resonant frequency of the second radiator 300 is the second resonant frequency, which is adapted to the B5 frequency band of the first radiator 200.

[0065] In this embodiment, the multiple switching branches include a first switching branch 420, which has a first capacitor C1, such as 0.6pF. When the first radiator 200 operates in the B5 band, the first switching branch 420 is controlled to be in a conducting state, that is, the first capacitor C1 is connected to the circuit of the second radiator 300. At this time, the resonant frequency of the second radiator 300 is the second resonant frequency, such as 0.95GHz, which matches the operating frequency of the first radiator 200 in the B5 band.

[0066] In some embodiments of this disclosure, multiple switch branches include a second switch branch 430, and multiple switching terminals include a second switching terminal. A second capacitor C2 is provided on the second switch branch 430, one end of the second capacitor C2 is electrically connected to the second switching terminal, and the other end of the second capacitor C2 is grounded.

[0067] When the second switch branch 430 is in the conducting state, the resonant frequency of the second radiator 300 is the third resonant frequency, so as to match the B28 frequency band of the first radiator 200.

[0068] In this embodiment, the multiple switching branches include a second switching branch 430, which has a second capacitor C2, such as 1.3 pF. When the first radiator 200 operates in the B28 frequency band, the second switching branch 430 is controlled to be in a conducting state, that is, the second capacitor C2 is connected to the circuit of the second radiator 300. At this time, the resonant frequency of the second radiator 300 is a third resonant frequency, such as 0.87 GHz, which matches the operating frequency of the first radiator 200 in the B28 frequency band.

[0069] It should be noted that the changeover switch 410 may include multiple switches, the common terminal of the multiple switches is the common terminal of the cut-off switch 410, and the multiple switches are respectively connected to multiple switch branches. The changeover switch 410 may also be a single-pole multi-throw switch, the stationary terminal of the single-pole multi-throw switch is the common terminal of the changeover switch 410, and the multiple terminals of the single-pole multi-throw switch are respectively connected to multiple switch branches.

[0070] Figure 3 This is a schematic diagram of the S-parameters of an electronic device antenna in different frequency bands, according to an exemplary embodiment of this disclosure. Figure 3 As shown, the horizontal axis represents the frequency range in GHz, from 0.5 GHz to 1.5 GHz, and the vertical axis represents the magnitude of the S-parameters in dB. Figure 3 It can be seen that when the first radiating stub 200 operates in the B8 band, the resonant frequency of the second radiator 300 is 1.017 GHz; when the first radiating stub 200 operates in the B5 band, the resonant frequency of the second radiator 300 is 0.944 GHz; and when the first radiating stub 200 operates in the B28 band, the resonant frequency of the second radiator 300 is 0.878 GHz. This demonstrates that the resonant frequency of the second radiator 300 can be adjusted according to the operating frequency band of the first radiating stub 200, thereby effectively assisting the first radiator 200 and improving antenna radiation efficiency.

[0071] Figures 4 to 6 This is a schematic diagram illustrating the radiation efficiency of an electronic device antenna according to an exemplary embodiment of the present disclosure. The horizontal axis represents the frequency range in GHz, and the vertical axis represents the efficiency value in dB. Figure 4 The radiation efficiency of the first radiating branch 200 operating in the B8 band is shown. The resonance of 1.017 GHz generated by the second radiator 300 will create a dip in efficiency, which will raise the radiation efficiency of the first radiator 200 itself, thereby improving the radiation efficiency in the B8 band. Figure 5 The radiation efficiency of the first radiating branch 200 operating in the B5 band is shown. The resonance of 0.944 GHz generated by the second radiator 300 will create a dip in efficiency, which will raise the radiation efficiency of the first radiator 200 itself, thereby improving the radiation efficiency in the B5 band. Figure 6 The radiation efficiency of the first radiating branch 200 operating in the B28 band is shown. The resonance of 0.878 GHz generated by the second radiator 300 will create a dip in efficiency, which will raise the radiation efficiency of the first radiator 200 itself, thereby improving the radiation efficiency in the B28 band.

[0072] In the electronic device of this disclosure embodiment, the second radiator 300 is electrically connected to the switching circuit 400 through the tuning point 320. The switching circuit 400 includes a switching switch 410 and multiple switching branches. By selectively turning on different switching branches, the resonant frequency of the second radiator 300 can be precisely adjusted to match the operating frequency of the first radiator 200 in different frequency bands, thereby effectively improving the radiation efficiency of the antenna system in each frequency band.

[0073] In related technologies, antenna efficiency can be improved by increasing the antenna clearance. However, the antenna environment inside current electronic devices is becoming increasingly extreme, making this solution difficult to implement. Increasing the length of the radiator can also improve the efficiency of some frequency bands, such as B28, but it will also reduce the efficiency of the B8 frequency band.

[0074] In this embodiment, the first radiator 200 has a length ranging from 45mm to 49mm and serves as an LB antenna to support the B5, B8, and B28 frequency bands. To improve radiation performance, a second radiator 300 with a length ranging from 38mm to 42mm is added. The second radiator 300 and the first radiator 200 are respectively disposed on opposite frames. The first radiator 200 has a feed point 210 and a first ground point 220, while the second radiator 300 has a second ground point 310. The first ground point 220 and the second ground point 310 are grounded together through the middle frame 100. Due to the potential difference between the first ground point 220 and the second ground point 310, current can flow on the second radiator 300, allowing it to function as a parasitic radiator. This structural design fully utilizes the limited internal space of the electronic device, achieving long-distance antenna efficiency improvement without increasing additional layout space. Furthermore, the second radiator 200 is electrically connected to the switching circuit 400 through the tuning point 320. The switching circuit 400 can precisely adjust the resonant frequency of the second radiator 200 to match the operating frequency of the first radiator 200 in different frequency bands, thereby effectively improving the radiation efficiency of the antenna system in the B5, B8 and B28 frequency bands.

[0075] It should be noted that the electronic device in this embodiment can be a foldable electronic device or a flat-screen electronic device (non-foldable electronic device). Of course, in practical applications, the position of the antenna assembly can be flexibly adjusted according to factors such as the specific shape, size, internal structure, and antenna performance requirements of the electronic device, and this embodiment does not limit this.

[0076] Figure 7 This is a block diagram illustrating an electronic device according to an exemplary embodiment of the present disclosure. (Refer to...) Figure 7 The electronic device 700 may also include one or more of the following components: processing component 702, memory 704, power supply component 706, multimedia component 708, audio component 710, input / output (I / O) interface 712, sensor component 714, and communication component 716.

[0077] Processing component 702 typically controls the overall operation of electronic device 700, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 702 may include one or more processors 720 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 702 may include one or more modules to facilitate interaction between processing component 702 and other components. For example, processing component 702 may include a multimedia module to facilitate interaction between multimedia component 708 and processing component 702.

[0078] Memory 704 is configured to store various types of data to support the operation of device 700. Examples of this data include instructions for any application or method operating on electronic device 700, contact data, phonebook data, messages, pictures, videos, etc. Memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0079] Power supply component 706 provides power to various components of electronic device 700. Power supply component 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 700.

[0080] Multimedia component 708 includes a screen that provides an output interface between the electronic device 700 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 708 includes a front-facing camera and / or a rear-facing camera. When the device 700 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0081] Audio component 710 is configured to output and / or input audio signals. For example, audio component 710 includes a microphone (MIC) configured to receive external audio signals when electronic device 700 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 704 or transmitted via communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

[0082] I / O interface 712 provides an interface between processing component 702 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0083] Sensor assembly 714 includes one or more sensors for providing state assessments of various aspects of electronic device 700. For example, sensor assembly 714 may detect the on / off state of device 700, the relative positioning of components such as the display and keypad of electronic device 700, changes in position of electronic device 700 or a component of electronic device 700, the presence or absence of user contact with electronic device 700, orientation or acceleration / deceleration of electronic device 700, and temperature changes of electronic device 700. Sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 714 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0084] Communication component 716 is configured to facilitate wired or wireless communication between electronic device 700 and other devices. Electronic device 700 can access wireless networks based on communication standards, such as WiFi, 3G, 4G, 5G, other communication standards, or combinations thereof. In some embodiments of this disclosure, communication component 716 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In some embodiments of this disclosure, communication component 716 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0085] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0086] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electronic device, characterized in that, The electronic device includes: The middle frame includes a first border and a second border that are disposed opposite to each other. A first radiator is disposed on the first frame, and the first radiator includes a feed point and a first ground point; The second radiator is disposed on the second frame and includes a second grounding point; The feed point is used to receive radio frequency signals to excite the first radiator to generate electromagnetic radiation; the first ground point and the second ground point are grounded through the middle frame so that the second radiator constitutes a parasitic radiator of the first radiator.

2. The electronic device according to claim 1, characterized in that, The second radiator includes a tuning point, which is electrically connected to a switching circuit; The switching circuit includes a switching switch and multiple switching branches. The common terminal of the switching switch is electrically connected to the tuning point, and the multiple switching terminals of the switching switch are respectively electrically connected to the multiple switching branches. The switching circuit is configured to adjust the resonant frequency of the second radiator by switching different switching branches to match the operating frequency band of the first radiator.

3. The electronic device according to claim 2, characterized in that, When all the multiple switch branches are in the open state, the resonant frequency of the second radiator is the first resonant frequency, so as to match the B8 frequency band of the first radiator.

4. The electronic device according to claim 2, characterized in that, The plurality of switch branches include a first switch branch, and the plurality of switching terminals include a first switching terminal; a first capacitor is provided on the first switch branch, one end of the first capacitor is electrically connected to the first switching terminal, and the other end of the first capacitor is grounded. When the first switch branch is in the conducting state, the resonant frequency of the second radiator is the second resonant frequency, so as to match the B5 frequency band of the first radiator.

5. The electronic device according to claim 2, characterized in that, The plurality of switch branches include a second switch branch, and the plurality of switching terminals include a second switching terminal; a second capacitor is provided on the second switch branch, one end of the second capacitor is electrically connected to the second switching terminal, and the other end of the second capacitor is grounded; When the second switch branch is in the conducting state, the resonant frequency of the second radiator is the third resonant frequency, so as to match the B28 frequency band of the first radiator.

6. The electronic device according to claim 1, characterized in that, The first radiator includes a first open end and a first connecting end; the feed point is located near the first open end, the first grounding point is located at the first connecting end, and the first grounding point is grounded through the middle frame.

7. The electronic device according to claim 2, characterized in that, The second radiator includes a second open end and a second connecting end; the tuning point is located near the second open end, the second grounding point is located at the second connecting end, and the second grounding point is grounded through the middle frame.

8. The electronic device according to claim 1, characterized in that, The length of the first radiator ranges from 45mm to 49mm.

9. The electronic device according to claim 1, characterized in that, The length of the second radiator ranges from 38mm to 42mm.

10. The electronic device according to claim 6, characterized in that, The distance between the power supply point and the first opening end ranges from 9mm to 9.8mm.

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