Electronic device

Abstract

The application relates to an electronic device. The electronic device comprises a metal plate, a feed source, a first radiator, a second radiator and a tuning circuit, the first radiator has a feed point connected with the feed source between a free end and a connecting end, the first radiator also has a first grounding point connected with the metal plate to support a first resonant mode and a second resonant mode under excitation of the feed source; the connecting end of the second radiator is connected with the connecting end of the first radiator, the connecting end and the free end of the second radiator have a tuning point; one end of the tuning circuit is connected with the tuning point of the second radiator, the other end of the tuning circuit is connected with the metal plate, and the tuning circuit is used for adjusting the second radiator and the first radiator to support a third resonant mode together; a second frequency band under the second resonant mode is greater than a first frequency band under the first resonant mode, and the second frequency band under the second resonant mode is smaller than a third frequency band under the third resonant mode. High-quality communication in a wide frequency band range is ensured.

Description

Technical Field

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

[0002] Users have increasingly higher demands for the communication functions of electronic devices. However, with the trend of ultra-thin and miniaturized design of electronic devices, the space left for antennas is getting smaller and smaller. Therefore, it is very important to balance miniaturization design and communication performance to improve the overall performance of electronic devices. Summary of the Invention

[0003] Therefore, it is necessary to provide an electronic device.

[0004] An electronic device provided in this application includes:

[0005] Metal sheet;

[0006] Feed source;

[0007] A first radiator has a feed point connected to the feed source between its free end and its connecting end. The first radiator also has a first ground point connected to the metal plate to support a first resonant mode and a second resonant mode under the excitation of the feed source.

[0008] A second radiator, the connection end of which is connected to the connection end of the first radiator, and a tuning point between the connection end and the free end of the second radiator;

[0009] A tuning circuit, one end of which is connected to the tuning point of the second radiator and the other end of which is connected to the metal plate, the tuning circuit being used to adjust the second radiator and the first radiator to jointly support the third resonant mode;

[0010] Wherein, the second frequency band in the second resonance mode is greater than the first frequency band in the first resonance mode, and the second frequency band in the second resonance mode is less than the third frequency band in the third resonance mode.

[0011] In the aforementioned electronic device, the feed current provided by the feed source enters the first radiator from the feed point and continues to propagate on the first radiator. Based on a common ground, it continues to propagate on the metal plate. During its propagation on the first radiator, the feed current supports the first frequency band in the first resonant mode and the second frequency band in the second resonant mode, realizing dual-band communication. Furthermore, based on the tuning effect of the tuning circuit, after propagating on the first radiator, the feed current continues to propagate on the second radiator, realizing a full-arm resonant mode on both the first and second radiators to support the third frequency band in the third resonant mode. This third frequency band lies between the first and second frequency bands, avoiding antenna efficiency degradation at the resonant sidebands of the first and second frequency bands, thus ensuring high-quality communication over a wide bandwidth. Moreover, reusing the first radiator to support multiple resonant modes enables a compact antenna design, which is beneficial for the overall miniaturization of the electronic device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 One of the schematic diagrams of an electronic device according to one or more embodiments;

[0014] Figure 2 A second schematic diagram of the structure of an electronic device according to one or more embodiments;

[0015] Figure 3 A schematic diagram of S-parameter curves for an electronic device according to one or more embodiments;

[0016] Figure 4 A schematic diagram of efficiency curves for one or more embodiments of an electronic device;

[0017] Figure 5 A third schematic diagram of the structure of an electronic device according to one or more embodiments;

[0018] Figure 6 This is the fourth schematic diagram of the structure of an electronic device according to one or more embodiments. Detailed Implementation

[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0021] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first radiator may be referred to as a second radiator, and similarly, a second radiator may be referred to as a first radiator. Both the first radiator and the second radiator are radiators, but they are not the same radiator.

[0022] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0023] The electronic devices provided in this application embodiment can be handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc.

[0024] In one embodiment, such as Figure 1As shown, an electronic device 100 is provided. The electronic device 100 includes: a metal plate 10, a feed source F, a first radiator 20, a second radiator 30, and a tuning circuit 40. The metal plate 10 is used to provide ground. The feed source F refers to a device or circuit capable of providing a feed signal. The first radiator 20, the second radiator 30, etc., can be one of a flexible printed circuit (FPC) antenna radiator, a laser direct structural (LDS) antenna radiator, a printed direct structural (PDS) antenna radiator, or a metal radiating branch. In the embodiments of this application, the types of radiators and parasitic branches are not further limited, and the types of different radiators can be the same or different.

[0025] The first radiator 20 has a feed point K connected to the feed source F between its free end and its connecting end. The first radiator 20 also has a first ground point D1 connected to the metal plate 10 to support the first and second resonant modes under the excitation of the feed source F. The connecting end of the second radiator 30 is connected to the connecting end of the first radiator 20, and a tuning point T is located between the connecting end and the free end of the second radiator 30. One end of the tuning circuit 40 is connected to the tuning point T of the second radiator 30, and the other end of the tuning circuit 40 is connected to the metal plate 10. The tuning circuit 40 is used to adjust the second radiator 30 and the first radiator 20 to jointly support the third resonant mode. The first, second, and third resonant modes correspond to different frequency ranges.

[0026] The first radiator 20 and the second radiator 30 are connected to the metal plate 10 through the first grounding point D1, providing a return path for the feed current provided by the feed source F.

[0027] Specifically, the feed current provided by the feed source F is fed into the first radiator 20 from the feed point K of the first radiator 20 and continues to be transmitted on the first radiator 20. Based on the common ground, it continues to be transmitted on the metal plate 10. During the transmission of the feed current on the first radiator 20, it supports the first frequency band in the first resonant mode and the second frequency band in the second resonant mode, realizing dual-band communication. On this basis, based on the tuning effect of the tuning circuit 40, after the feed current is transmitted on the first radiator 20, it continues to be transmitted on the second radiator 30, realizing the whole-arm resonant mode on the first radiator 20 and the second radiator 30, so as to support the third frequency band in the third resonant mode. This third frequency band is between the first frequency band and the second frequency band, avoiding the deterioration of antenna efficiency at the resonant sidebands of the first frequency band and the second frequency band, thereby ensuring high-quality communication over a wide bandwidth.

[0028] In one embodiment, such as Figure 2As shown, the current distribution in the first resonant mode is I1: from the feed point K of the first radiator 20 to the first ground point D1. The current distribution in the second resonant mode is I2: from the feed point K of the first radiator 20 to the free end of the first radiator 20. The current distribution in the third resonant mode is I3: from the free end of the second radiator 30 to the connection end of the second radiator 30, and from the connection end of the first radiator 20 to the free end of the first radiator 20.

[0029] For example Figure 2 Taking the architecture shown as an example, the first grounding point D1 is positioned closer to the second radiator 30 than the feed point K. The feed current provided by the feed source F is fed from the feed point K into the first radiator 20 and then fed to both ends, forming current distributions I1 and I2, supporting the first and second resonant modes. The tuning circuit 40 provides reactance, which cancels out the reactance of the first radiator 20 and the second radiator 30 themselves, making the first radiator 20 and the second radiator 30 exhibit purely resistive properties. This allows the first radiator 20 and the second radiator 30 to be used entirely for transmitting the feed current, forming the I3 current distribution, supporting the third resonant mode. By reusing the first radiator 20 to support multiple resonant modes, it is beneficial to achieve high-quality communication over a wide bandwidth while miniaturizing the electronic device 100.

[0030] In one embodiment, such as Figure 2 As shown, the first radiator 20 and the second radiator 30 are perpendicular. The perpendicularity of the first radiator 20 and the second radiator 30 should be understood as their overall perpendicular relationship in visual appearance. The perpendicularity of the first radiator 20 and the second radiator 30 allows for better integration into the corner positions of the electronic device 100, avoiding the need for excessively long radiators on a single frame.

[0031] In one embodiment, a first grounding point D1 is located at the connection end of the first radiator 20. The location of the first grounding point D1 at the connection end of the first radiator 20 allows for maximum utilization of [the radiator's] resources in the first resonant mode. Figure 2 The radiator portion to the right of the feed point K fully utilizes the size of the radiator, which helps to reduce the overall size of the first radiator 20 while achieving communication in the same frequency band, thus realizing the miniaturization design of the electronic device 100.

[0032] Furthermore, the first grounding point D1 is located at the connection end of the first radiator 20, allowing the first radiator 20 and the second radiator 30 to share a common grounding point. Since the grounding point is typically a zero-potential point, the common grounding of the first radiator 20 and the second radiator 30 can unify the potentials of the two radiators, avoiding additional losses caused by potential differences. Structurally, the common grounding can make the antenna structure more compact, reducing the number of solder points to the metal plate 10, saving space, and making it suitable for miniaturized designs.

[0033] In one embodiment, the first frequency band corresponding to the first resonant mode, the second frequency band corresponding to the second resonant mode, and the third frequency band corresponding to the third resonant mode are all frequency bands within the mid-to-high frequency band. The frequency range of the mid-to-high frequency band (MHB) is 1710MHz-2690MHz.

[0034] The electronic device 100 provided in this application embodiment supports a third resonant mode based on the dual resonant mode supported by the first radiator 20, in conjunction with the tuning effect of the second radiator 30 and the tuning circuit 40. Thus, it can operate in the first, second and third frequency bands of the mid-to-high frequency band, realize wide-band communication, and has multiple resonant points within the communication frequency range, with good standing wave effect and guaranteed antenna performance.

[0035] In one application scenario, communication is improved for the mid-to-high frequency bands. The first and third frequency bands are mid-frequency bands, and the second frequency band is a high-frequency band.

[0036] In one embodiment, the third resonant mode is a half-wavelength mode.

[0037] In one embodiment, the first resonant mode and the second resonant mode are quarter-wavelength modes. When the first resonant mode is a quarter-wavelength mode, such as... Figure 2 As shown, I1 is fed into the first radiator 20 from the feed point K, and continues to propagate through the first radiator 20 to its ground point, and then fed into the metal plate 10 after passing through the ground point. The second resonant mode is the quarter-wavelength mode, as shown... Figure 2 As shown, I2 is fed into the first radiator 20 from the feed point K and continues to propagate to its free end on the first radiator 20. At this time, it is equivalent to an IFA (Inverted F Antenna) operating in quarter-wavelength mode. The IFA forms the main radiation lobe in the open-circuit direction, which has excellent directivity. When applied to mobile phones, it can concentrate the radiated energy in front of the screen, reducing radiation to the human body.

[0038] Furthermore, the electrical length required for the quarter-wavelength mode is less than that required for the half-wavelength mode, which helps to reduce the size requirements of the first radiator 20 and achieve miniaturization of the electronic device 100.

[0039] In one embodiment, the first frequency band is an intermediate frequency band, the second frequency band is a high frequency band, and the third frequency band is an intermediate frequency band. The tuning circuit 40 adjusts the first radiator 20 and the second radiator 30 to jointly support the third frequency band. Within the wide bandwidth defined by the first and second frequency bands, an additional resonant point is added to avoid efficiency degradation at the sidebands of the first and second frequency bands, thereby improving the communication quality across the entire wide bandwidth. Furthermore, only one tuning circuit 40 needs to be added, eliminating the need for complex tuning and matching circuit networks such as switching switches, simplifying the structure of the electronic device 100 and reducing costs.

[0040] In one embodiment, the first, second, and third frequency bands are all communication frequency bands under the LTE (Long Term Evolution) network standard. LTE, by introducing OFDM (Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Output) technologies, increases the theoretical peak rate to 100Mbps downlink and 50Mbps uplink, and compresses the one-way transmission latency to less than 5ms.

[0041] In one embodiment, the first frequency band includes the B3 frequency band, the second frequency band includes at least one of the B40 and B41 frequency bands, and the third frequency band includes the B1 frequency band.

[0042] Electronic device 100 supports the B1 band (1920MHz to 2170MHz), B3 band (1710MHz to 1880MHz), B40 band (2300MHz to 2400MHz), and B41 band (2496MHz to 2690MHz). It can switch communication bands in complex communication environments to ensure communication quality. For example, in busy urban areas, signal coverage varies in different locations due to obstructions from buildings. For instance, inside some high-rise buildings, the B1 band signal may have slightly weaker penetration due to its higher frequency, but the B3 band signal penetrates walls better than the B1 band signal, allowing electronic device 100 to maintain a stable connection and avoid signal dead zones. The B40 and B41 bands are suitable for data transmission in high-speed mobile scenarios.

[0043] For example, when the electronic device 100 is an in-vehicle device, the in-vehicle device can take advantage of the good coverage characteristics of the B3 frequency band when the vehicle is driving on urban roads to ensure that the navigation information is updated in real time and that there will be no navigation interruption or delay due to signal loss, thus ensuring the accuracy and timeliness of navigation positioning.

[0044] When vehicles are traveling in suburban areas or other areas with relatively sparse base station coverage, the on-board equipment can operate in the B1 band. Based on the wide coverage of the B1 band, it can maintain the connection between the vehicle and the server, obtain real-time traffic information, and avoid entering congested areas.

[0045] When vehicles are performing large-scale data operations such as software updates, the on-board equipment switches to the B40 or B41 frequency band to take advantage of its high bandwidth, thereby accelerating software download speed and improving user experience.

[0046] Electronic device 100 supports multiple resonant modes, which allows it to flexibly switch communication frequency bands according to the load conditions and bandwidth capabilities of each frequency band in different application scenarios, thus ensuring high communication quality in multiple scenarios.

[0047] The electrical length of the radiating branch between the feed point K and the first ground point D1 of the first radiator 20 matches 1 / 4 wavelength of the first frequency band, that is, it is proportional to 1 / 4 wavelength of the first frequency band in an integer multiple. (Using the first frequency band...) Taking the B3 band as an example, the first band Corresponding wavelength = At this time, the electrical length of the radiating branch between the feed point K of the first radiator 20 and the first grounding point D1 should be the same as that of the radiating branch. Matching, for example, could be 4.2cm, to support... Resonant mode.

[0048] The electrical length between the feed point K of the first radiator 20 and the free end of the first radiator 20 matches 1 / 4 wavelength of the second frequency band, that is, it is proportional to 1 / 4 wavelength of the first frequency band. (Using the first frequency band...) Taking the B40 band as an example, the second band Corresponding wavelength = At this time, the electrical length of the radiating branch between the feed point K of the first radiator 20 and the first grounding point D1 should be the same as that of the radiating branch. A match, for example, could be 3.19cm, to support... Resonant mode.

[0049] The combined dimensions of the first radiator 20 and the second radiator 30 should match half the wavelength corresponding to the third frequency band to support the half-wavelength mode across the entire radiator. (Using the third frequency band...) Taking the B1 band as an example, the second band Corresponding wavelength = At this time, the electric lengths of the first radiator 20 and the second radiator 30 should be equal to... Matching to support Resonant mode.

[0050] In one embodiment, the first grounding point D1 is located at the connection position between the first radiator 20 and the second radiator 30, and the length of the first radiator 20 is equal to the length of the second radiator 30, thereby achieving a balanced mode.

[0051] In one embodiment, the first and third frequency bands can be low-frequency bands, and the second frequency band is a mid-frequency band. The frequency range of the low-frequency band (LB) is 703MHz-960MHz. When the electronic device 100 is a large-sized device such as a tablet, the large size of its bezel can be utilized to arrange the first radiator 20 and the second radiator 30 on the bezel. The first radiator 20 supports both the low-frequency and mid-frequency bands. The first radiator 20 and the second radiator 30 jointly support the low-frequency band to achieve multi-band communication within the low- and mid-frequency range, and by reusing the first radiator 20, the miniaturization design of the electronic device 100 is achieved.

[0052] To better illustrate the implementation process of the embodiments of this application, the following example is provided. Taking a first frequency band including the B3 frequency band, a second frequency band including at least one of the B40 and B41 frequency bands, and a third frequency band including the B1 frequency band as an example, in... Figure 1 Under the architecture shown, tests were conducted, and the results were as follows: Figure 3 The S-parameter curves shown and as follows Figure 4 The efficiency curve shown.

[0053] from Figure 3 As shown in the S-parameter curves, compared to curve S2,2 of the electronic device 100 in the pair of proportions, the electronic device 100 in this embodiment of the application excites an additional resonance near 2.17GHz (see S-parameter curve S2,2'), supporting the aforementioned first resonance mode, second resonance mode and third resonance mode.

[0054] Figure 4 In the figure, the system radiative efficiency 1 and the system total radiative efficiency 1 are: Figure 3 The efficiency curves corresponding to curves S2,2, show the system radiative efficiency 2 and the total system radiative efficiency 2. Figure 3 The efficiency curve corresponding to curve S2,2'. From Figure 4 As can be seen, the electronic device 100 provided in this embodiment of the application has improved radiation efficiency compared to the electronic device 100 in the comparative example, especially in the mid-frequency band. Therefore, the electronic device 100 provided in this embodiment of the application significantly improves communication quality while achieving broadband communication.

[0055] In one embodiment, the metal plate 10 is at least a portion of the middle plate or circuit board in the electronic device 100. The circuit board can be a PCB (Printed Circuit Board) in the electronic device 100 that provides grounding; it can be disposed independently outside the middle plate or disposed on the middle plate. Based on the description of the electronic device 100 in the above embodiments, the electronic device 100 provided in this application embodiment can achieve high-quality communication within a wide frequency band determined by the first frequency band and the second frequency band.

[0056] In one embodiment, the electronic device 100 further includes: a top frame, a first side frame, a bottom frame, and a second side frame connected in sequence; a first radiator 20 is disposed on the top frame; and a second radiator 30 is disposed on the first side frame and / or the second side frame. That is, the first radiator 20 and the second radiator 30 are disposed at the corner formed by the top frame and at least one of the first side frame and the second side frame.

[0057] The "top" and "bottom" of the top and bottom bezels can be understood as being positioned higher and lower than the ground when the electronic device 100 is in normal use. Optional, such as... Figure 1 From the perspective shown, the first radiator 20 and the second radiator 30 can be positioned at the upper right corner of the frame. Positioning them at the upper corner reduces the negative impact of hand obstruction on communication quality, thereby ensuring communication quality.

[0058] In one embodiment, the first radiator 20 and the second radiator 30 are orthogonal and located at a corner of the electronic device 100. In this case, whether held horizontally or vertically, in addition to the radiating branches parallel to the human body, there are also radiating branches perpendicular to the human skin tissue. The radiation field generated by these perpendicular radiating branches rapidly attenuates in the human tissue, reducing the SAR value absorbed by the human body.

[0059] In one embodiment, the electronic device 100 further includes a third radiator 50. The free end of the third radiator 50 is slot-coupled to the free end of the first radiator 20, and the third radiator 50 has a second grounding point D2.

[0060] After the feed current is fed to the free end of the first radiator 20, it can continue to be transmitted to the third radiator 50 based on the slot coupling with the third radiator 50, and fed into the metal plate 10 based on the second ground point D2 to excite a resonant mode on the third radiator 50, thereby extending the communication bandwidth. There is no need to configure a separate feed source F for the third radiator 50, thus simplifying the structure of the electronic device 100, improving its compactness, and facilitating miniaturization design.

[0061] In one embodiment, the electronic device 100 further includes a fourth radiator 60. The free end of the fourth radiator 60 is slot-coupled to the free end of the second radiator 30, and the fourth radiator 60 has a third grounding point D3.

[0062] After the feed current is fed to the free end of the second radiator 30, it can continue to be transmitted to the fourth radiator 60 based on the slot coupling with the fourth radiator 60, and fed into the metal plate 10 based on the third ground point D3 to excite a resonant mode on the fourth radiator 60, thereby extending the communication bandwidth. There is no need to configure a separate feed source F for the fourth radiator 60, thus simplifying the structure of the electronic device 100, improving its compactness, and facilitating miniaturization design.

[0063] In one embodiment, the electronic device 100 further includes processing circuitry (not shown). The processing circuitry acts as a feed source F, providing a power supply signal.

[0064] In one embodiment, the electronic device 100 further includes processing circuitry (not shown). The processing circuitry provides a feed F for 4G network standards and a feed F for 5G network standards. By switching network standards, a shared antenna architecture for 4G and 5G can be achieved, which is beneficial for the miniaturization design of the electronic device 100.

[0065] In one embodiment, in 5G mode, the feed current provided by the processing circuit excites the 5G band on the third radiator 50 and the 5G band on the fourth radiator 60.

[0066] In one embodiment, the first grounding point D1, the second grounding point D2, and the third grounding point D3 can all be spring contacts, that is, the grounding connection between the radiator and the metal plate 10 is achieved through spring contacts.

[0067] In one embodiment, such as Figure 5 As shown, the first grounding point D1 on the first radiator 20 is a spring. A spring can be provided on the second radiator 30 to contact the first grounding point D1, serving as the grounding point for the second radiator 30.

[0068] In one embodiment, both the feed point K and the tuning point T can be spring-loaded structures, that is, the connection between the first radiator 20 and the feed source F, and between the second radiator 30 and the tuning circuit 40, can be achieved through spring-loaded structures.

[0069] like Figure 6 As shown, further explanation will be given using mobile phone 11 as an example of electronic device 100. Specifically, as follows... Figure 6As shown, the mobile phone 11 may include a memory 21 (which optionally includes one or more computer-readable storage media), processing circuitry 22, a peripheral device interface 23, a radio frequency system 24, and an input / output (I / O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will understand that... Figure 6 The mobile phone 11 shown does not constitute a limitation on the mobile phone and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Figure 6 The various components shown are implemented in hardware, software, or a combination of both, including one or more signal processing and / or application-specific integrated circuits.

[0070] Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplary examples include software components stored in memory 21 such as an operating system 211, a communication module (or instruction set) 212, a global positioning system (GPS) module (or instruction set) 213, etc.

[0071] Processing circuitry 22 and other control circuitry (such as the control circuitry in radio frequency system 24) can be used to control the operation of mobile phone 11. Processing circuitry 22 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc.

[0072] The processing circuit 22 can be configured to implement a control algorithm for controlling the use of the antenna in the mobile phone 11. The processing circuit 22 can also issue control commands for controlling the various tuning circuits in the radio frequency system 24.

[0073] I / O subsystem 26 couples input / output peripherals on mobile phone 11, such as a keypad and other input control devices, to peripheral interface 23. I / O subsystem 26 optionally includes a touchscreen, buttons, a tone generator, an accelerometer (motion sensor), an ambient light sensor and other sensors, LEDs and other status indicators, data ports, etc. For example, a user can control the operation of mobile phone 11 by supplying commands via I / O subsystem 26, and can use the output resources of I / O subsystem 26 to receive status information and other outputs from mobile phone 11. For example, a user can press button 261 to turn the phone on or off.

[0074] The radio frequency system 24 may include a first radiator, a second radiator, a feed source, a tuning circuit, etc., in any of the foregoing embodiments.

[0075] Optionally, the communication control unit can be the processing circuit 22.

[0076] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An electronic device, characterized in that, include: Metal sheet; Feed source; A first radiator has a feed point connected to the feed source between its free end and its connecting end. The first radiator also has a first ground point connected to the metal plate to support a first resonant mode and a second resonant mode under the excitation of the feed source. A second radiator, the connection end of the second radiator is connected to the connection end of the first radiator, and there is a tuning point between the connection end and the free end of the second radiator; A tuning circuit, one end of which is connected to the tuning point of the second radiator and the other end of which is connected to the metal plate, the tuning circuit being used to adjust the second radiator and the first radiator to jointly support the third resonant mode; Wherein, the second frequency band in the second resonance mode is greater than the first frequency band in the first resonance mode, and the second frequency band in the second resonance mode is less than the third frequency band in the third resonance mode.

2. The electronic device according to claim 1, characterized in that, The current distribution in the first resonant mode is as follows: from the feed point of the first radiator to the first ground point; The current distribution in the second resonant mode is as follows: from the feed point of the first radiator to the free end of the first radiator; The current distribution in the third resonant mode is as follows: from the free end of the second radiator to the connection end of the second radiator, and from the connection end of the first radiator to the free end of the first radiator.

3. The electronic device according to claim 1, characterized in that, The first grounding point is located at the connection end of the first radiator.

4. The electronic device according to claim 1, characterized in that, The first resonant mode and the second resonant mode are quarter-wavelength modes, and the third resonant mode is a half-wavelength mode.

5. The electronic device according to claim 1, characterized in that, The first frequency band is a mid-frequency band, the second frequency band is a high-frequency band, and the third frequency band is a mid-frequency band.

6. The electronic device according to claim 5, characterized in that, The first frequency band includes the B3 frequency band, the second frequency band includes at least one of the B40 and B41 frequency bands, and the third frequency band includes the B1 frequency band.

7. The electronic device according to any one of claims 1 to 6, characterized in that, The metal plate is at least a portion of the middle plate or circuit board in the electronic device.

8. The electronic device according to claim 7, characterized in that, The electronic device further includes: a top frame, a first side frame, a bottom frame, and a second side frame connected in sequence, wherein the first radiator is disposed on the top frame, and the second radiator is disposed on the first side frame and / or the second side frame.

9. The electronic device according to any one of claims 1-6, characterized in that, The electronic device also includes: A third radiator, the free end of which is slot-coupled with the free end of the first radiator, and the third radiator has a second grounding point.

10. The electronic device according to any one of claims 1-6, characterized in that, The electronic device also includes: A fourth radiator, the free end of which is slot-coupled with the free end of the second radiator, and the fourth radiator has a third grounding point.

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