Antenna device and electronic device

Abstract

The embodiment of the application provides an antenna device and electronic equipment, comprising: a first radiator, the first radiator is grounded; a second radiator, the second radiator has a gap with the first radiator, the second radiator is electromagnetically coupled with the first radiator through the gap, and the second radiator is spaced apart from the first feeding point, the second feeding point and the grounding point, the first feeding point, the second feeding point and the grounding point are sequentially away from the first radiator, and the grounding point is grounded; the first feeding point is used for feeding in the first excitation signal to excite the second radiator to support the 5G resonance mode; the second feeding point is used for feeding in the second excitation signal to excite the second radiator to support the intermediate frequency resonance mode, and to excite the second radiator and the first radiator to jointly support the WiFi resonance mode. The antenna device of the embodiment of the application can reduce the influence of the human body on the radiation performance of the antenna device, improve the radiation performance of the antenna device, and enhance the stability of wireless communication.

Description

Technical Field

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

[0002] Electronic devices such as smartphones are equipped with antennas to enable wireless communication. For example, electronic devices typically have 4G antennas, 5G antennas, and WiFi antennas to achieve the corresponding wireless communication functions.

[0003] In related technologies, the antennas of electronic devices are easily affected by the external environment, such as by the human body, which can lead to a decrease in the antenna's radiation performance. Summary of the Invention

[0004] This application provides an antenna device and electronic device that can improve the radiation performance of the antenna device and enhance the stability of wireless communication.

[0005] This application provides an antenna device, including:

[0006] The first radiator is grounded;

[0007] A second radiator has a gap between itself and the first radiator. The second radiator is electromagnetically coupled to the first radiator through the gap. The second radiator is provided with a first feed point, a second feed point, and a grounding point at intervals. The first feed point, the second feed point, and the grounding point are sequentially moved away from the first radiator. The grounding point is grounded.

[0008] The first feed point is used to feed in the first excitation signal to excite the second radiator to support the 5G resonant mode;

[0009] The second feed point is used to feed in the second excitation signal to excite the second radiator to support the intermediate frequency resonant mode, and to excite the second radiator and the first radiator to jointly support the WiFi resonant mode.

[0010] This application also provides an electronic device, including:

[0011] Main body;

[0012] An antenna device is disposed on the main body, and the antenna device is the aforementioned antenna device.

[0013] The antenna device of this application embodiment, by setting dual feed points, that is, setting a first feed point and a second feed point on the second radiator, and feeding different excitation signals into each of the dual feed points, can excite different parts of the antenna device to support different resonance modes, thereby reducing the influence of the human body on the radiation performance of the antenna device, improving the radiation performance of the antenna device, and enhancing the stability of wireless communication. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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.

[0015] Figure 1 This is a schematic diagram of the first structure of the antenna device according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of a second structure of the antenna device according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of a third structure of the antenna device according to an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of a fourth structure of the antenna device according to an embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the first type of resonant current of the antenna device according to an embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the second type of resonant current of the antenna device according to an embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the third type of resonant current for the antenna device according to an embodiment of this application.

[0022] Figure 8 This is a schematic diagram of the first type of S-parameters of the antenna device according to an embodiment of this application.

[0023] Figure 9 This is a schematic diagram of the first type of overall system efficiency of the antenna device according to an embodiment of this application.

[0024] Figure 10 This is a schematic diagram simulating a user's use of the antenna device according to an embodiment of this application.

[0025] Figure 11 This is the radiation pattern of the antenna device according to an embodiment of this application when it operates in the B3 frequency band.

[0026] Figure 12 This is the radiation pattern of the antenna device according to an embodiment of this application when it operates in the B1 frequency band.

[0027] Figure 13 This is the radiation pattern of the antenna device in this application when it is operating in WiFi communication.

[0028] Figure 14 This is a schematic diagram comparing the radiation patterns of the antenna device of this application embodiment with those of antennas in related technologies when operating in the B3 frequency band.

[0029] Figure 15 This is a schematic diagram comparing the radiation patterns of the antenna device according to this application and antennas in related technologies when operating in WiFi communication.

[0030] Figure 16 This is a schematic diagram of the second type of S-parameters of the antenna device according to an embodiment of this application.

[0031] Figure 17 This is a schematic diagram of the second type of overall system efficiency of the antenna device according to an embodiment of this application.

[0032] Figure 18 This is a schematic diagram comparing the overall system efficiency of the antenna device in this application with that of antennas in related technologies.

[0033] Figure 19 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] This application provides an antenna device that can be applied to electronic devices. These electronic devices may include, for example, smartphones, tablets, gaming devices, AR (Augmented Reality) devices, laptops, desktop computing devices, and other devices with wireless communication capabilities.

[0036] refer to Figure 1 , Figure 1 This is a schematic diagram of a first structure of the antenna device 100 according to an embodiment of this application. The antenna device 100 includes a first radiator 10 and a second radiator 20. The first radiator 10 and the second radiator 20 are arranged at a distance from each other.

[0037] Both the first radiator 10 and the second radiator 20 can be antenna radiators in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or MDA (In-Mold Design). They can also be antenna radiators formed from conductor structures of electronic devices, metal traces on circuit boards, etc. In practical applications, the first radiator 10 and the second radiator 20 can be different types of antenna radiators or the same type. The shape and size of the first radiator 10 and the second radiator 20 can be set according to actual needs. For example, in practical applications, the first radiator 10 and the second radiator 20 can be elongated or L-shaped.

[0038] The first radiator 10 is grounded. In some embodiments, the first radiator 10 includes a first end 11 and a second end 12. The first end 11 faces the second radiator 20. The second end 12 is grounded. For example, in practical applications, the second end 12 may be electrically connected to the system ground of the electronic device to achieve grounding.

[0039] A gap 30 exists between the second radiator 20 and the first radiator 10. The second radiator 20 is electromagnetically coupled to the first radiator 10 through the gap 30. The second radiator 20 is provided with a first feed point 201, a second feed point 202, and a ground point 203 at intervals. The first feed point 201, the second feed point 202, and the ground point 203 are sequentially located away from the first radiator 10; that is, the distance between the first feed point 201 and the first radiator 10 is less than the distance between the second feed point 202 and the first radiator 10, and the distance between the second feed point 202 and the first radiator 10 is less than the distance between the ground point 203 and the first radiator 10. The ground point 203 is grounded. For example, in practical applications, the ground point 203 can be electrically connected to the system ground of the electronic device to achieve grounding.

[0040] In some embodiments, the second radiator 20 includes a third end 21 and a fourth end 22. The third end 21 faces the first radiator 10, for example, towards the first end 11 of the first radiator 10. A gap 30 is located between the third end 21 and the first end 11. A grounding point 203 is located at the fourth end 22.

[0041] The first feed point 201 is used to feed in the first excitation signal to excite the second radiator 20 to support the 5G (5th Generation Mobile Communication Technology) resonant mode, thereby radiating 5G wireless signals to the outside world and realizing 5G communication function.

[0042] The second feed point 202 is used to feed in the second excitation signal to excite the second radiator 20 to support the intermediate frequency (Middleband, MB) resonant mode, and to excite the second radiator 20 and the first radiator 10 to jointly support the WiFi (Wireless-Fidelity) resonant mode. The intermediate frequency resonant mode is a 4G (4th Generation Mobile Communication Technology) resonant mode. Therefore, the second excitation signal can excite the second radiator 20 and the first radiator 10 to radiate 4G wireless signals and WiFi wireless signals to the outside world, realizing 4G communication functions and WiFi communication functions.

[0043] In some embodiments, the antenna device 100 further includes a first feed 31 and a second feed 32. In practical applications, the first feed 31 and the second feed 32 can be disposed on the circuit board of an electronic device, such as on the motherboard, or on a separate small board.

[0044] The first feed source 31 is electrically connected to the first feed point 201. The first feed source 31 provides the aforementioned first excitation signal and feeds the first excitation signal to the second radiator 20 through the first feed point 201. In practical applications, the first excitation signal can be a 5G excitation signal.

[0045] The second feed source 32 is electrically connected to the second feed point 202. The second feed source 32 is used to provide the aforementioned second excitation signal and feeds the second excitation signal to the second radiator 20 through the second feed point 202. In practical applications, the second excitation signal may include a 4G excitation signal and a WiFi excitation signal, such as an LTE (Long Term Evolution) excitation signal and a WiFi excitation signal.

[0046] In some embodiments, reference Figure 2 , Figure 2 This is a schematic diagram of a second structure of the antenna device 100 according to an embodiment of this application.

[0047] The first radiator 10 has a first length L1, which can be understood as the length between the first end 11 and the second end 12. The second radiator 20 has a second length L2 between its third end 21 and the first feed point 201, a third length L3 between the first feed point 201 and the second feed point 202, and a fourth length L4 between the second feed point 202 and the ground point 203.

[0048] In practical applications, adjusting the first length L1 and the second length L2 can adjust the resonant frequency band of the 5G resonant mode. Adjusting the first length L1, the second length L2, the third length L3, and the fourth length L4 can adjust the resonant frequency band of the intermediate frequency (IF) resonant mode. Therefore, by setting the first length L1, the second length L2, the third length L3, and the fourth length L4 to appropriate dimensions, the resonant frequency bands of both the 5G resonant mode and the IF resonant mode can be adjusted to the desired frequency bands.

[0049] In some embodiments, reference Figure 3 , Figure 3 This is a schematic diagram of a third structure of the antenna device 100 according to an embodiment of this application. The antenna device 100 also includes a first feed element 41 and a second feed element 42. In practical applications, both the first feed element 41 and the second feed element 42 can be conductor structures such as metal springs, metal conductive pillars, or metal pins.

[0050] One end of the first feed element 41 is connected to the first feed point 201, for example, abutting against the first feed point 201, and the other end is electrically connected to the first feed source 31. Therefore, the first feed source 31 can be electrically connected to the first feed point 201 through the first feed element 41, thereby feeding the first excitation signal to the second radiator 20 through the first feed point 201.

[0051] One end of the second feed element 42 is connected to the second feed point 202, for example, abutting against the second feed point 202, and the other end is electrically connected to the second feed source 32. Therefore, the second feed source 32 can be electrically connected to the second feed point 202 through the second feed element 42, thereby feeding the second excitation signal to the second radiator 20 through the second feed point 202.

[0052] In some embodiments, reference Figure 4 , Figure 4 This is a schematic diagram of a fourth structure of the antenna device 100 according to an embodiment of this application. The antenna device 100 also includes a frequency band switching circuit 50, which includes multiple tuning paths and a switching switch 51.

[0053] In some embodiments, the multiple tuning paths may include four tuning paths, for example. Figure 4Tuning paths a, b, c, and d are shown. It is understood that in other embodiments, the number of tuning paths can be other numbers, such as 2, 3, 6, etc. Each tuning path is electrically connected to the second feed point 202. In practical applications, each tuning path may include one or more impedance elements such as inductors, capacitors, and resistors. Among multiple tuning paths, one tuning path may not include any impedance elements. Different tuning paths have different impedances; for example, the impedances of tuning paths a, b, c, and d are all different.

[0054] One end of the switching switch 51 is electrically connected to the second feed source 32. The other end of the switching switch 51 can connect any one of the tuning paths, such as tuning path a, tuning path b, tuning path c, and tuning path d, thereby creating different impedances between the second feed source 32 and the second feed point 202, allowing the second radiator 20 to support different sub-frequency bands of the intermediate frequency resonant mode. In practical applications, the switching switch 51 can be a single-pole multi-throw switch formed by components such as transistors or switching transistors.

[0055] The following provides a detailed description of each resonance mode of the antenna device 100 according to the embodiments of this application.

[0056] refer to Figure 5 , Figure 5 This is a schematic diagram of the first type of resonant current of the antenna device 100 according to an embodiment of this application.

[0057] When the first feed source 31 feeds the first excitation signal to the second radiator 20 through the first feed point 201, the first excitation signal is used to excite the portion of the second radiator 20 between the first feed point 201 and the third end 21 to support the 5G resonant mode. The 5G resonant mode generates a resonant current I1 on the second radiator 20, which extends from the first feed point 201 to the third end 21.

[0058] In some embodiments, the 5G resonant mode covers the N78 band. The frequency range of the N78 band includes 3300MHz to 3800MHz.

[0059] refer to Figure 6 , Figure 6 This is a schematic diagram of the second type of resonant current of the antenna device 100 according to an embodiment of this application.

[0060] When the second feed source 32 feeds the second excitation signal to the second radiator 20 through the second feed point 202, the second excitation signal is used to excite the portion of the second radiator 20 between the second feed point 202 and the ground point 203 to support the intermediate frequency resonant mode. The intermediate frequency resonant mode generates a resonant current I2 on the second radiator 20, which flows from the second feed point 202 to the ground point 203. In some embodiments, the frequency range covered by the intermediate frequency resonant mode includes 1710MHz to 2170MHz. In practical applications, the intermediate frequency resonant mode can cover frequency bands such as B3 (uplink frequency 1710MHz to 1785MHz, downlink frequency 1805MHz to 1880MHz) and B1 (uplink frequency 1920MHz to 1980MHz, downlink frequency 2110MHz to 2170MHz).

[0061] refer to Figure 7 , Figure 7 This is a schematic diagram of the third resonant current of the antenna device 100 according to an embodiment of this application.

[0062] When the second feed source 32 feeds the second excitation signal to the second radiator 20 through the second feed point 202, the second excitation signal is also used to excite the portion between the second feed point 202 and the third end 21, together with the first radiator 10, to support the WiFi resonant mode. In the WiFi resonant mode, the portion between the second feed point 202 and the third end 21 of the second radiator 20 generates a resonant current I3, and the first radiator 10 generates a resonant current I4. The resonant current I3 is denoted as the first resonant current, and the resonant current I4 is denoted as the second resonant current. The direction of the first resonant current I3 is the same as the direction of the second resonant current I4.

[0063] In some embodiments, the WiFi communication function implemented in WiFi resonant mode conforms to the 802.11b (Wireless Local Area Network) communication protocol. The frequency range covered by WiFi resonant mode may include 2400MHz to 2485MHz.

[0064] refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of the first type of S-parameters of the antenna device 100 according to an embodiment of this application. Figure 9 This is a schematic diagram of the first type of overall system efficiency of the antenna device 100 according to an embodiment of this application.

[0065] like Figure 8As shown, curve S1 represents the S-parameter curve of the 5G resonant mode under the first excitation signal, and curve S2 represents the S-parameter curves of the intermediate frequency resonant mode and the WiFi resonant mode under the second excitation signal. Points 1 and 2 are the resonant frequencies of the 5G resonant mode, with point 1 corresponding to approximately 3.3 GHz and point 2 corresponding to approximately 3.8 GHz. Points 3 and 4 are the resonant frequencies of the intermediate frequency resonant mode, with point 3 corresponding to approximately 1.71 GHz and point 4 corresponding to approximately 1.88 GHz. Points 5 and 6 are the resonant frequencies of the WiFi resonant mode, with point 5 corresponding to approximately 2.4 GHz and point 6 corresponding to approximately 2.5 GHz.

[0066] like Figure 9 As shown, curve S3 represents the overall system efficiency curve of the 5G resonant mode under the excitation of the first excitation signal, and curve S4 represents the overall system efficiency curve of the intermediate frequency resonant mode and the WiFi resonant mode under the excitation of the second excitation signal.

[0067] Among them, marker 1, marker 2, and marker 3 are all resonant frequencies of the 5G resonant mode. The resonant frequency corresponding to marker 1 is approximately 3.4 GHz, and the overall system efficiency is approximately -2.6434 dB. The resonant frequency corresponding to marker 2 is approximately 3.4877 GHz, and the overall system efficiency is approximately -2.0462 dB. The resonant frequency corresponding to marker 3 is approximately 3.6 GHz, and the overall system efficiency is approximately -2.8709 dB.

[0068] Marker points 4, 5, and 6 are all resonant frequencies of the intermediate frequency resonant mode. The resonant frequency corresponding to marker point 4 is approximately 1.71 GHz, and the overall system efficiency is approximately -4.3521 dB; the resonant frequency corresponding to marker point 5 is approximately 1.78 GHz, and the overall system efficiency is approximately -2.0857 dB; the resonant frequency corresponding to marker point 6 is approximately 1.88 GHz, and the overall system efficiency is approximately -4.4882 dB.

[0069] Marker points 7, 8, and 9 are all resonant frequencies of the WiFi resonant mode. The resonant frequency corresponding to marker point 7 is approximately 2.4 GHz, with a total system efficiency of approximately -3.319 dB; the resonant frequency corresponding to marker point 8 is approximately 2.4495 GHz, with a total system efficiency of approximately -2.8907 dB; and the resonant frequency corresponding to marker point 9 is approximately 2.5 GHz, with a total system efficiency of approximately -3.4931 dB.

[0070] Depend on Figure 8 and Figure 9 It is understood that the antenna device 100 of this application embodiment has good radiation efficiency in 5G resonant mode, intermediate frequency resonant mode and WiFi resonant mode.

[0071] In practical applications, during the use of electronic devices, the user's hands and torso can affect the antenna device 100. (Reference) Figure 10 , Figure 10 This is a schematic diagram simulating a user's use of the antenna device 100 according to an embodiment of this application. In the diagram, reference numeral 1 represents a simulated human torso, and reference numeral 2 represents a simulated human hand. The entire device can simulate the influence of the human torso and hand on the antenna device 100 during a user's use of an electronic device.

[0072] refer to Figures 11 to 13 , Figure 11 This is the radiation pattern of the antenna device 100 in this embodiment of the application when it operates in the B3 frequency band. Curve S5 in the figure represents the directivity curve. Figure 12 This is the radiation pattern of the antenna device 100 in this embodiment of the application when it operates in the B1 frequency band. Curve S6 in the figure represents the directivity curve. Figure 13 This is a radiation pattern of the antenna device 100 in this application embodiment when it is operating in WiFi communication mode. Curve S7 in the figure represents the directivity curve.

[0073] As can be seen from the directional curves S5, S6, and S7, when the antenna device 100 operates in the B3 band, B1 band, or WiFi communication, it has good directivity in the range of 90 degrees to 270 degrees (i.e., the direction the user is facing).

[0074] refer to Figure 14 , Figure 14 This is a schematic diagram comparing the radiation patterns of the antenna device 100 of this application embodiment with those of antennas in related technologies when operating in the B3 frequency band.

[0075] Curve S8 represents the directional curve of the antenna device 100 in this embodiment of the application when it operates in the B3 frequency band, and curve S9 represents the directional curve of an antenna in the related art when it operates in the B3 frequency band. A comparison of curves S8 and S9 shows that, in the B3 frequency band, the antenna device 100 in this embodiment of the application has better radiation performance in the direction away from the human body, i.e., 270 degrees to 330 degrees.

[0076] refer to Figure 15 , Figure 15 This is a schematic diagram comparing the radiation patterns of the antenna device 100 in this application embodiment with those of antennas in related technologies when operating in WiFi communication.

[0077] Wherein, curve S10 represents the directional curve of the antenna device 100 in this embodiment of the application when operating in WiFi communication, and curve S11 represents the directional curve of an antenna in the related art when operating in WiFi communication. A comparison of curves S10 and S11 shows that, for WiFi communication, the antenna device 100 in this embodiment of the application has better radiation performance in the direction away from the human body, i.e., from 270 degrees to 0 degrees.

[0078] refer to Figure 16 , Figure 16 This is a schematic diagram of the second S-parameter of the antenna device 100 according to an embodiment of this application. When the antenna device 100 supports the intermediate frequency resonant mode under the excitation of the second excitation signal, the intermediate frequency resonant mode can cover both the B3 and B1 frequency bands. In practical applications, the antenna device 100 can switch between the B3 and B1 frequency bands.

[0079] like Figure 16 As shown, curve S12 represents the S-parameter curve of the 5G resonant mode under the first excitation signal, curve S13 represents the S-parameter curve of the B1 band and WiFi resonant mode under the second excitation signal, and curve S14 represents the S-parameter curve of the B3 band and WiFi resonant mode under the second excitation signal. Figure 16 It can be seen that the antenna device 100 has good resonance characteristics in the B1 and B3 bands of the intermediate frequency resonance mode, as well as in the 5G resonance mode and WiFi resonance mode.

[0080] refer to Figure 17 , Figure 17 This is a schematic diagram illustrating the second type of overall system efficiency of the antenna device 100 according to an embodiment of this application. Curve S15 represents the overall system efficiency curve of the 5G resonant mode under the excitation of the first excitation signal, curve S16 represents the overall system efficiency curve of the B1 band and WiFi resonant mode under the excitation of the second excitation signal, and curve S17 represents the overall system efficiency curve of the B3 band and WiFi resonant mode under the excitation of the second excitation signal. Figure 17 It can be seen that the antenna device 100 has good overall system efficiency in the B1 and B3 bands of the intermediate frequency resonant mode, as well as in the 5G resonant mode and WiFi resonant mode.

[0081] refer to Figure 18 , Figure 18This diagram illustrates a comparison of the overall system efficiency of the antenna device 100 according to this application embodiment and antennas in related technologies. Curve S18 represents the overall system efficiency of the antenna device 100 according to this application embodiment, and curve S19 represents the overall system efficiency of antennas in related technologies. A comparison of curves S18 and S19 shows that in the B3 (1710MHz~1880MHz) band of the intermediate frequency resonant mode and for WiFi (2400MHz~2485MHz) communication, the antenna device 100 according to this application embodiment exhibits better overall system efficiency performance compared to antennas in related technologies, with an average efficiency improvement of approximately 2dB.

[0082] The antenna device 100 of this application embodiment is equipped with dual feed points, namely, a first feed point 201 and a second feed point 202 are provided on the second radiator 20. Different excitation signals are fed into each of the dual feed points, so different parts of the antenna device 100 can be excited to support different resonance modes, thereby reducing the impact of the human body on the radiation performance of the antenna device 100, improving the radiation performance of the antenna device 100, and enhancing the stability of wireless communication.

[0083] This application also provides an electronic device. The electronic device may be, for example, a smartphone, tablet computer, gaming device, AR (Augmented Reality) device, laptop computer, desktop computing device, or any other device with wireless communication capabilities.

[0084] refer to Figure 19 , Figure 19 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device includes an antenna device 100, a main body 300, and a camera module 500.

[0085] The main body 300 can form the overall outline of the electronic device and house various functional components of the electronic device. For example, functional components such as the motherboard and battery of the electronic device can be housed inside the main body 300, while functional components such as the display module and camera module can be housed on the main body 300.

[0086] An antenna device 100 is disposed on the main body 300, and the antenna device 100 is the antenna device of any of the above embodiments. Electronic devices can realize wireless communication functions through the antenna device 100, such as 4G communication, 5G communication, WiFi communication, etc.

[0087] The camera module 500 is disposed on the main body 300. For example, the lens of the camera module 500 may protrude from the main body 300, while other parts may be disposed inside the main body 300. The camera module 500 can be used to perform functions such as taking photos and recording videos. In some embodiments, the camera module 500 may be a rear camera module, which may be disposed at the upper left corner of the main body 300. In this case, Figure 19 The diagram shown can be understood as a rear view of the electronic device.

[0088] In some embodiments, the main body 300 includes a first side 301, a second side 302, a third side 303, and a fourth side 304 connected end to end. The lengths of the first side 301 and the third side 303 are both less than the lengths of the second side 302 and the fourth side 304. Therefore, the first side 301 and the third side 303 can be understood as shorter sides, and the second side 302 and the fourth side 304 can be understood as longer sides.

[0089] When a user holds an electronic device vertically, the first side 301 is typically located at the top, the third side 303 at the bottom, and the second side 302 and fourth side 304 on the left and right sides. In this case, the user's hand usually grips the bottom and the lower parts of the left and right sides; that is, the third side 303 is gripped by the user's hand, and the second side 302 and the fourth side 304 are gripped by the user's hand near the third side 303.

[0090] When a user holds an electronic device horizontally, such as when playing games or watching movies in landscape mode, typically one of the second side 302 and the fourth side 304 is located at the top, and the other at the bottom, while the first side 301 and the third side 303 are located on the left and right sides. In this situation, the user usually holds the electronic device horizontally with both hands, with their hands gripping the ends, meaning the first side 301 and the third side 303 are held by the user's hands.

[0091] In this embodiment, the antenna device 100 is disposed on the second side 302 or the fourth side 304. Therefore, when the user holds the electronic device horizontally with both hands, since the antenna device 100 is disposed on the second side 302 or the fourth side 304, the antenna device 100 will not be held by the user's hands, which can ensure that the antenna device 100 has good radiation efficiency, improve the communication stability of the antenna device 100, and thus also improve the communication stability of the electronic device.

[0092] In practical applications, such as Figure 19As shown, the rear camera module 500 can be positioned close to the fourth side 304. In this case, the antenna device 100 can be positioned on the fourth side 304. It is understandable that during actual use of electronic devices, when holding the electronic device horizontally with both hands, in order to improve the comfort of use, the side where the rear camera module 500 is located is usually oriented outward or upward, that is, the side 304 where the rear camera module 500 is located is away from the user's body. At this time, the antenna device 100 is also away from the user's body, thus reducing the impact of the human torso on the antenna device 100 and improving the communication stability of the antenna device 100.

[0093] In the description of this application, it should be understood that terms such as “first” and “second” are used only to distinguish similar objects and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0094] It should be noted that, in the embodiments of this application, "electrical connection" can be a direct connection between two electrical components or an indirect connection. For example, the electrical connection between A and B can be achieved by A and B being directly connected, or by A and B being indirectly connected through one or more other electrical components.

[0095] The antenna device and electronic device provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application, and the descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An antenna device, characterized in that, include: The first radiator is grounded; A second radiator has a gap between itself and the first radiator. The second radiator is electromagnetically coupled to the first radiator through the gap. The second radiator is provided with a first feed point, a second feed point, and a grounding point at intervals. The first feed point, the second feed point, and the grounding point are sequentially moved away from the first radiator. The grounding point is grounded. The first feed point is used to feed in the first excitation signal to excite the second radiator to support the 5G resonant mode; The second feed point is used to feed in the second excitation signal to excite the second radiator to support the intermediate frequency resonant mode, and to excite the second radiator and the first radiator to jointly support the WiFi resonant mode.

2. The antenna device according to claim 1, characterized in that: The first radiator includes a first end and a second end, the first end facing the second radiator and the second end being grounded; The second radiator includes a third end and a fourth end, the third end facing the first radiator, the gap being located between the third end and the first end, and the grounding point being located at the fourth end.

3. The antenna device according to claim 2, characterized in that, The first excitation signal is used to excite the portion between the first feed point and the third end to support the 5G resonant mode.

4. The antenna device according to claim 3, characterized in that, The 5G resonant mode covers the N78 frequency band, which has a frequency range of 3300MHz to 3800MHz.

5. The antenna device according to claim 2, characterized in that, The second excitation signal is used to excite the portion between the second feed point and the ground point to support the intermediate frequency resonant mode, the frequency range covered by the intermediate frequency resonant mode including 1710MHz to 2170MHz.

6. The antenna device according to claim 2, characterized in that, The second excitation signal is used to excite the portion between the second feed point and the third end and the first radiator to jointly support the WiFi resonant mode, the frequency range covered by the WiFi resonant mode including 2400MHz to 2485MHz.

7. The antenna device according to claim 6, characterized in that: In the WiFi resonant mode, a first resonant current is generated in the portion between the second feed point and the third end, and a second resonant current is generated in the first radiator. The direction of the first resonant current is the same as the direction of the second resonant current.

8. The antenna device according to any one of claims 1 to 7, characterized in that, Also includes: A first feed source is electrically connected to the first feed point. The first feed source is used to provide the first excitation signal and feeds the first excitation signal through the first feed point. The second feed source is electrically connected to the second feed point. The second feed source is used to provide the second excitation signal and feeds the second excitation signal through the second feed point.

9. The antenna device according to claim 8, characterized in that, It also includes a frequency band switching circuit, which includes: Multiple tuning paths, each of which is electrically connected to the second feed point, and different tuning paths have different impedances; A switching switch, one end of which is electrically connected to the second feed source, and the other end of which can connect any of the tuning paths, so that the second radiator supports different sub-bands of the intermediate frequency resonant mode.

10. An electronic device, characterized in that, include: Main body; An antenna device is disposed on the main body, and the antenna device is the antenna device according to any one of claims 1 to 9.

11. The electronic device according to claim 10, characterized in that: The main body includes a first side, a second side, a third side, and a fourth side connected end to end in sequence. The length of the first side and the length of the third side are both less than the length of the second side and the length of the fourth side. The antenna device is disposed on the second side or the fourth side.

12. The electronic device according to claim 11, characterized in that, Also includes: A rear camera module is disposed on the main body and is located near the fourth side. The antenna device is located on the fourth side.

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