Electronic device

Abstract

The embodiment of the invention provides electronic equipment. The electronic equipment comprises a floor; the first radiating body is electrically connected with the floor, the first radiating body comprises a feeding point, and the feeding point is used for feeding in an excitation signal; the second radiating body is electromagnetically coupled with the first radiating body, and the second radiating body comprises a plurality of grounding points which are arranged at intervals; when different grounding points are electrically connected with the floor, the excitation signal excites the second radiator to generate different resonance modes so as to change a directional diagram of the electronic equipment, and the directional diagram is formed by common resonance of the first radiator, the second radiator and the floor excited by the excitation signal. According to the electronic equipment provided by the embodiment of the invention, the grounding position of the second radiator can be changed, and the directional diagram of the electronic equipment can be adjusted, so that the radiation performance of the electronic equipment can be improved, particularly, the radiation performance of the zero point of the directional diagram can be greatly improved, and the wireless communication performance of the electronic equipment can be improved.

Description

Technical Field

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

[0002] An antenna is provided in electronic devices such as smart phones to realize wireless communication functions. For example, a 4G antenna, a 5G antenna, a WiFi antenna, etc. are generally provided in electronic devices to realize corresponding wireless communication functions.

[0003] Antennas are devices that transmit and receive wireless signals in electronic devices. The position of their directional patterns determines the distribution of radiated power. Due to the spatial radiation characteristics of antennas, there must be zero points in certain directions in the directional pattern. The radiated power at the zero point is poor, resulting in reduced communication performance at the zero point. Summary of the invention

[0004] An embodiment of the present application provides an electronic device, which can adjust the directional pattern of the electronic device to improve the wireless communication performance of the electronic device.

[0005] An embodiment of the present application provides an electronic device, including:

[0006] floor;

[0007] a first radiator, the first radiator being electrically connected to the floor, the first radiator comprising a feeding point, the feeding point being used to feed an excitation signal;

[0008] a second radiator, the second radiator being electromagnetically coupled to the first radiator, the second radiator comprising a plurality of grounding points arranged at intervals;

[0009] When different grounding points are electrically connected to the floor, the excitation signal excites the second radiator to produce different resonance modes to change the directivity pattern of the electronic device, and the directivity pattern is formed by the excitation signal stimulating the first radiator, the second radiator, and the floor to resonate together.

[0010] The electronic device of the embodiment of the present application can be grounded by controlling different grounding points among the multiple grounding points of the second radiator to be electrically connected to the floor, thereby changing the grounding position of the second radiator and adjusting the radiation pattern of the electronic device. Therefore, the radiation performance of the electronic device can be improved, especially the radiation performance can be greatly improved for the zero point of the radiation pattern, thereby improving the wireless communication performance of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0012] Figure 1 This is a schematic diagram of the first structure of an electronic device according to an embodiment of the present application.

[0013] Figure 2 This is a schematic diagram of a first working state of an electronic device according to an embodiment of the present application.

[0014] Figure 3 for Figure 2 Schematic diagram of the current distribution of the electronic device shown.

[0015] Figure 4 for Figure 2 Schematic diagram of current simulation of the electronic device shown.

[0016] Figure 5 for Figure 2 Directional diagram of the electronic device shown.

[0017] Figure 6 This is a schematic diagram of a second working state of the electronic device according to an embodiment of the present application.

[0018] Figure 7 for Figure 6 Schematic diagram of current distribution in the electronic device shown.

[0019] Figure 8 for Figure 6 Schematic diagram of current simulation of the electronic device shown.

[0020] Fig. 9 for Figure 6 Directional diagram of the electronic device shown.

[0021] Fig.10 This is a schematic diagram of a third working state of the electronic device according to an embodiment of the present application.

[0022] Fig.11 for Fig.10 Schematic diagram of current distribution in the electronic device shown.

[0023] Fig.12 for Fig.10 Schematic diagram of current simulation of the electronic device shown.

[0024] Fig.13 for Fig.10 Directional diagram of the electronic device shown.

[0025] Fig.14 This is a second structural schematic diagram of an electronic device according to an embodiment of the present application.

[0026] Fig.15 This is a third structural schematic diagram of the electronic device according to an embodiment of the present application.

[0027] Fig.16 This is a fourth structural schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] An embodiment of the present application provides an electronic device, which may be, for example, a smart phone, a tablet computer, a gaming device, an AR (Augmented Reality) device, a laptop computer, a desktop computing device, or other device with a wireless communication function.

[0030] refer to Figure 1 , Figure 1 1 is a schematic diagram of a first structure of an electronic device 10 according to an embodiment of the present application. The electronic device 10 includes a floor 11, a first radiator 12, and a second radiator 13. The first radiator 12 and the second radiator 13 are both electrically connected to the floor 11. The first radiator 12 and the second radiator 13 are spaced apart.

[0031] The floor 11 can form a reference ground. The electronic components of the electronic device 10 can be electrically connected to the floor 11 to achieve grounding. In some embodiments, the floor 11 can be formed on a main board of the electronic device, or on an independent circuit board, or on a metal structure such as a metal middle frame or a metal shell. The present application does not specifically limit the formation method of the floor 11. In practical applications, the floor 11 can be rectangular, rounded rectangular, etc. as a whole.

[0032] The first radiator 12 and the second radiator 13 can be antenna radiators in the form of FPC (Flexible Printed Circuit), LDS (Laser Direct Structure), PDS (Printing Direct Structure), etc., or they can be antenna radiators in the form of MDA (in-mold molding), or they can be antenna radiators formed by structures such as metal structures of electronic equipment and metal traces on circuit boards. In practical applications, the first radiator 12 and the second radiator 13 can be antenna radiators of different forms or antenna radiators of the same form. The shape, size, etc. of the first radiator 12 and the second radiator 13 can be set according to actual needs. For example, in practical applications, the shapes of the first radiator 12 and the second radiator 13 can be long strips or "L" shapes.

[0033] The first radiator 12 is electrically connected to the floor 11 to achieve grounding. The first radiator 12 includes a feeding point 121. The feeding point 121 is used to feed an excitation signal.

[0034] In some embodiments, the electronic device 10 further includes a feed source 15. The feed source 15 may be disposed on a main board of the electronic device, or on an independent small board. The feed source 15 is electrically connected to a feed point 121. The feed source 15 is used to provide an excitation signal, and feed the excitation signal to the first radiator 12 through the feed point 121. In practical applications, the excitation signal may be an excitation signal of a type such as a 4G (4th Generation Mobile Communication Technology) excitation signal, a 5G (5th Generation Mobile Communication Technology) excitation signal, or a WiFi (Wireless-Fidelity) excitation signal.

[0035] In some embodiments, the first radiator 12 includes a grounding portion 122 and a first free end 123. The grounding portion 122 is electrically connected to the floor 11 to ground the first radiator 12. The first free end 123 faces the second radiator 13. The feeding point 121 is located between the grounding portion 122 and the first free end 123. In an example of practical application, the grounding portion 122 is located at the other end opposite to the first free end 123.

[0036] The second radiator 13 is electromagnetically coupled with the first radiator 12. For example, in some embodiments, there is a gap 14 between the second radiator 13 and the first radiator 12, and the second radiator 13 is electromagnetically coupled with the first radiator 12 through the gap 14. Therefore, the first radiator 12 can be understood as a main radiator, and the second radiator 13 can be understood as a parasitic radiator. Among them, the second radiator 13 includes a plurality of grounding points arranged at intervals, for example, including a first grounding point 131, a second grounding point 132, and a third grounding point 133 arranged at intervals. Each grounding point can be electrically connected to the floor 11 to ground the second radiator 13. When one of the plurality of grounding points is electrically connected to the floor 11, the other grounding points are electrically disconnected from the floor 11. It should be noted that the plurality of grounding points of the second radiator 13 include the first grounding point 131, the second grounding point 132, and the third grounding point 133, which is only a feasible implementation. In other embodiments, the second radiator 13 may also include other numbers of grounding points, which are not specifically limited in this application.

[0037] In some embodiments, the second radiator 13 includes a second free end 134. The second free end 134 faces the first free end 123. The gap 14 is located between the second free end 134 and the first free end 123. The first grounding point 131, the second grounding point 132, and the third grounding point 133 are sequentially away from the second free end 134. That is, the distance between the first grounding point 131 and the second free end 134 is smaller than the distance between the second grounding point 132 and the second free end 134, and the distance between the second grounding point 132 and the second free end 134 is smaller than the distance between the third grounding point 133 and the second free end 134.

[0038] When an excitation signal is fed to the first radiator 12 through the feeding point 121, the excitation signal can excite the first radiator 12, the second radiator 13 and the floor 11 to resonate together, thereby radiating wireless signals to the outside world and realizing wireless communication functions. When the excitation signal excites the first radiator 12, the second radiator 13 and the floor 11 to resonate together, a directional pattern is formed, that is, the directional pattern of the electronic device 10. The directional pattern can reflect the distribution of the radiation power of the electronic device 10 in all directions.

[0039] Among them, when different grounding points of the second radiator 13 are electrically connected to the floor 11 to ground the second radiator 13, the excitation signal excites the second radiator 13 to generate different resonance modes to change the directivity diagram of the electronic device 10. It can be understood that when the second radiator 13 generates different resonance modes, the resonant current distribution on the second radiator 13 will change, and because the second radiator 13 is electrically connected to the floor 11, the resonant current distribution of the floor 11 will also change, thereby changing the overall directivity diagram of the electronic device 10, thereby adjusting the directivity diagram of the electronic device 10.

[0040] Therefore, the electronic device 10 of the embodiment of the present application can be grounded by controlling different grounding points among the multiple grounding points of the second radiator 13 to be electrically connected to the floor 11, thereby changing the grounding position of the second radiator 13 and adjusting the radiation pattern of the electronic device 10, thereby improving the radiation performance of the electronic device 10, especially the radiation performance can be greatly improved for the zero point of the radiation pattern, thereby improving the wireless communication performance of the electronic device 10.

[0041] In practical applications, there is usually a zero point in the directional diagram of WiFi communication, and the radiation performance at the zero point is poor, which will cause a poor user experience, especially in the 5G frequency band of WiFi communication. Therefore, in some embodiments, the electronic device 10 of the embodiment of the present application can be applied to the 5G frequency band of WiFi communication. Among them, the excitation signal provided by the feed source 15 can be an excitation signal of the 5G frequency band of WiFi communication, and the excitation signal is used to excite the first radiator 12, the second radiator 13, and the floor 11 to resonate together to form a directional diagram of the 5G frequency band of WiFi communication.

[0042] The electronic device 10 of the embodiment of the present application can be electrically connected to the floor 11 by controlling different grounding points among the multiple grounding points of the second radiator 13 to change the grounding position of the second radiator 13, thereby adjusting the radiation pattern of the 5G frequency band of WiFi communication, improving the radiation performance of the zero point position of the radiation pattern, and improving the performance of WiFi communication.

[0043] The following is a detailed description of the different resonance modes generated by the second radiator 13 in the embodiment of the present application.

[0044] refer to Figures 2 to 5 , Figure 2 This is a schematic diagram of a first working state of the electronic device 10 according to an embodiment of the present application. Figure 3 for Figure 2 The current distribution diagram of the electronic device 10 is shown. Figure 4 for Figure 2 The current simulation schematic diagram of the electronic device 10 is shown. Figure 5 for Figure 2 A directional diagram of the electronic device 10 is shown.

[0045] like Figure 2 As shown, the first grounding point 131 is electrically connected to the floor 11, and the second grounding point 132 and the third grounding point 133 are both electrically disconnected from the floor 11. In this case, the excitation signal excites the portion between the first grounding point 131 and the second free end 134 of the second radiator 13 to generate a quarter-wavelength resonant mode corresponding to the target frequency band. In an example of practical application, the target frequency band can be a 5G frequency band for WiFi communication.

[0046] like Figure 3 and Figure 4 As shown, the excitation signal excites the first radiator 12 to generate the first resonant current I1, excites the second radiator 13 to generate the second resonant current I2, and excites the floor 11 to generate the third resonant current I3. The first resonant current I1 is distributed throughout the first radiator 12, and the second resonant current I2 is from the first grounding point 131 to the second free end 134. The first resonant current I1 and the second resonant current I2 have the same direction. The third resonant current I3 is mainly distributed in the first area of ​​the floor 11, which is located on the side of the first radiator 12 away from the second radiator 13. Figure 4 In the example shown, the third resonant current I3 is mainly distributed on the left side of the floor 11 .

[0047] like Figure 5 As shown, it can be seen from the radiation diagram of the electronic device 10 that the radiation intensity on the side of the first radiator 12 away from the second radiator 13 is stronger and the radiation performance is better.

[0048] refer to Figures 6 to 9 , Figure 6 This is a schematic diagram of a second working state of the electronic device 10 according to an embodiment of the present application. Figure 7 for Figure 6 The current distribution diagram of the electronic device 10 is shown. Figure 8 for Figure 6 The current simulation schematic diagram of the electronic device 10 is shown. Fig. 9 for Figure 6 A directional diagram of the electronic device 10 is shown.

[0049] like Figure 6 As shown, the second grounding point 132 is electrically connected to the floor 11, and the first grounding point 131 and the third grounding point 133 are both electrically disconnected from the floor 11. In this case, the excitation signal excites the second radiator 13 to generate a half-wavelength resonance mode corresponding to the target frequency band.

[0050] like Figure 7 and Figure 8 As shown, the excitation signal excites the first radiator 12 to generate the fourth resonant current I4, excites the second radiator 13 to generate the fifth resonant current I5, and excites the floor 11 to generate the sixth resonant current I6. The fourth resonant current I4 is distributed throughout the first radiator 12, and the fifth resonant current I5 is distributed throughout the second radiator 13. The fourth resonant current I4 is opposite to the fifth resonant current I5. The sixth resonant current I6 is distributed on the floor 11.

[0051] like Fig. 9 As shown, it can be seen from the directional diagram of the electronic device 10 that the entire directional diagram distribution is relatively rounded, and the radiation performance in each direction is relatively balanced.

[0052] refer to Figures 10 to 13 , Fig.10 Schematic diagram of the third working state of the electronic device 10 according to the embodiment of the present application. Fig.11 for Fig.10 The current distribution diagram of the electronic device 10 is shown. Fig.12 for Fig.10 The current simulation schematic diagram of the electronic device 10 is shown. Fig.13 for Fig.10 A directional diagram of the electronic device 10 is shown.

[0053] like Fig.10 As shown, the third grounding point 133 is electrically connected to the floor 11, and the first grounding point 131 and the second grounding point 132 are both electrically disconnected from the floor 11. In this case, the excitation signal excites the second radiator 13 to generate a three-quarter wavelength resonance mode corresponding to the target frequency band.

[0054] like Fig.11 and Fig.12 As shown, the excitation signal excites the first radiator 12 to generate the seventh resonant current I7, excites the second radiator 13 to generate the eighth resonant current I8, and excites the floor 11 to generate the ninth resonant current I9. The seventh resonant current I7 is distributed throughout the first radiator 12, and the eighth resonant current I8 is distributed throughout the second radiator 13. The seventh resonant current I7 is opposite to the eighth resonant current I8. The ninth resonant current I9 is ​​distributed in the floor 11. The intensity of the ninth resonant current I9 is ​​greater than the intensity of the sixth resonant current I6. That is, in this case, the resonant current intensity of the floor 11 is greater than the resonant current intensity of the floor 11 when the second grounding point 132 is electrically connected to the floor 11.

[0055] like Fig.13 As shown, it can be seen from the directional diagram of the electronic device 10 that the entire directional diagram distribution is also relatively rounded, and the radiation performance in each direction is also relatively balanced. Compared with the situation when the second grounding point 132 is electrically connected to the floor 11, when the third grounding point 133 is electrically connected to the floor 11, the overall current distribution intensity of the floor 11 is stronger, so the radiation performance in each direction is also stronger, and the overall directivity of the directional diagram is lower.

[0056] In some embodiments, reference Fig.14 , Fig.141 is a second structural diagram of the electronic device 10 of an embodiment of the present application. The electronic device 10 also includes a tuning switch 16. The tuning switch 16 includes a plurality of first ports, such as first ports P1, P2, and P3, and includes a second port, such as a second port P4. Each of the first grounding point 131, the second grounding point 132, and the third grounding point 133 is electrically connected to a first port. For example, the first grounding point 131 is electrically connected to the first port P1, the second grounding point 132 is electrically connected to the first port P2, and the third grounding point 133 is electrically connected to the first port P3. The second port P4 is electrically connected to the floor 11 to achieve grounding.

[0057] The second port P4 can connect to any first port to ground one of the first grounding point 131, the second grounding point 132 and the third grounding point 133. In practical applications, the tuning switch 16 can be a single-pole multi-throw switch formed by electronic components such as transistors and switch tubes.

[0058] When the second port P4 is connected to the first port P1, the second port P4 is disconnected from the first ports P2 and P3. At this time, the second radiator 13 is electrically connected to the floor 11 through the first grounding point 131 to achieve grounding. In this case, the excitation signal excites the portion between the first grounding point 131 and the second free end 134 of the second radiator 13 to generate a quarter-wavelength resonant mode corresponding to the target frequency band.

[0059] When the second port P4 is connected to the first port P2, the second port P4 is disconnected from the first ports P1 and P3. At this time, the second radiator 13 is electrically connected to the floor 11 through the second grounding point 132 to achieve grounding. In this case, the excitation signal excites the second radiator 13 to generate a half-wavelength resonance mode corresponding to the target frequency band.

[0060] When the second port P4 is connected to the first port P3, the second port P4 is disconnected from the first ports P1 and P2. At this time, the second radiator 13 is electrically connected to the floor 11 through the third grounding point 133 to achieve grounding. In this case, the excitation signal excites the second radiator 13 to generate a three-quarter wavelength resonance mode corresponding to the target frequency band.

[0061] In some embodiments, the electronic device 10 further includes a first matching unit 171 and a second matching unit 172. The first matching unit 171 and the second matching unit 172 both include impedance elements.

[0062] The first matching unit 171 is disposed between the second grounding point 132 and a first port, for example, between the second grounding point 132 and the first port P2. The second grounding point 132 can be electrically connected or disconnected with the floor 11 through the first matching unit 171 and the tuning switch 16.

[0063] The second matching unit 172 is disposed between the third grounding point 133 and another first port, for example, between the third grounding point 133 and the first port P3. The third grounding point 133 can be electrically connected or disconnected with the floor 11 through the second matching unit 172 and the tuning switch 16.

[0064] The impedance of the second matching unit 172 is different from the impedance of the first matching unit 171. For example, in some embodiments, the first matching unit 171 may include a capacitor C, and the second matching unit 172 may include an inductor L. The capacitance value of the capacitor C and the inductance value of the inductor L can be set according to actual needs.

[0065] It can be understood that no matching unit is provided between the first grounding point 131 and the tuning switch 16, and matching units with different impedances are provided between the second grounding point 132, the third grounding point 133 and the tuning switch 16, so that different impedances exist between the first grounding point 131, the second grounding point 132, the third grounding point 133 and the floor 11. Therefore, when controlling the electrical connection between different grounding points and the floor 11, different impedances exist between the second radiator 13 and the floor 11, so that different resonant modes of the second radiator 13 can be more conveniently excited. Therefore, the second radiator 13 can more easily generate the desired resonant mode, thereby simplifying the design of the antenna.

[0066] In practical applications, the tuning switch 16 may not be used, but a plurality of independent switches may be used to control the electrical connection between the first grounding point 131 , the second grounding point 132 , the third grounding point 133 and the floor 11 .

[0067] For example, in some embodiments, reference Fig.15 , Fig.15 This is a third structural diagram of the electronic device 10 according to an embodiment of the present application.

[0068] The electronic device 10 includes a first switch K1, a second switch K2, and a third switch K3. Among them, one end of the first switch K1 is electrically connected to the first grounding point 131, and the other end is electrically connected to the floor 11. One end of the second switch K2 is electrically connected to the second grounding point 132, and the other end is electrically connected to the floor 11. One end of the third switch K3 is electrically connected to the third grounding point 133, and the other end is electrically connected to the floor 11.

[0069] When one of the first switch K1, the second switch K2, and the third switch K3 is turned on, the other two are turned off. Thus, one of the first grounding point 131, the second grounding point 132, and the third grounding point 133 can be electrically connected to the floor 11, and the other two can be electrically disconnected from the floor 11. In practical applications, the first switch K1, the second switch K2, and the third switch K3 can be single-pole single-throw switches formed by electronic components such as transistors and switch tubes.

[0070] It can be understood that, when the first switch K1, the second switch K2, and the third switch K3 are used to control the electrical connection between the first grounding point 131, the second grounding point 132, the third grounding point 133 and the floor 11, the first matching unit 171 and the second matching unit 172 can also be provided. The first matching unit 171 is provided between the second grounding point 132 and the second switch K2, and the second matching unit 172 is provided between the third grounding point 133 and the third switch K3. The specific implementation of the first matching unit 171 and the second matching unit 172 can refer to the description in the above embodiment, and will not be repeated here.

[0071] refer to Fig.16 , Fig.16 This is a fourth structural diagram of the electronic device 10 according to an embodiment of the present application.

[0072] The electronic device 10 further includes a main body 18. The main body 18 can form the overall outline of the electronic device and can be used to set various functional components of the electronic device, such as a motherboard, a battery and other functional components of the electronic device can be set inside the main body 18, and a display module, a camera module and other functional components can be set on the main body 18.

[0073] The main body 18 includes a side 181. The side 181 may be, for example, a long side of the main body 18. The first radiator 12 and the second radiator 13 are arranged at intervals on the side 181. For example, in some embodiments, the side 181 may be a side of a metal middle frame, and the first radiator 12 and the second radiator 13 may be formed by metal branches on the metal middle frame.

[0074] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0075] It should be noted that in the embodiments of the present application, "electrical connection" can be achieved by direct connection between two electrical components to achieve electrical connection, or it can be achieved by indirect connection to achieve electrical connection. For example, A and B are electrically connected, which can be achieved by direct connection between A and B, or it can be achieved by indirect connection between A and B through one or more other electrical components.

[0076] The electronic device provided by the embodiment of the present application is described in detail above. The principle and implementation method of the present application are described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. An electronic device, characterized in that: include: floor; a first radiator, the first radiator being electrically connected to the floor, the first radiator comprising a feeding point, the feeding point being used to feed an excitation signal; a second radiator, the second radiator being electromagnetically coupled to the first radiator, the second radiator comprising a plurality of grounding points arranged at intervals; When different grounding points are electrically connected to the floor, the excitation signal excites the second radiator to produce different resonance modes to change the directivity pattern of the electronic device, and the directivity pattern is formed by the excitation signal stimulating the first radiator, the second radiator, and the floor to resonate together.

2. The electronic device according to claim 1, characterized in that: The first radiator comprises a grounding portion and a first free end, the grounding portion is electrically connected to the floor, the first free end faces the second radiator, and the feeding point is located between the grounding portion and the first free end; The second radiator includes a second free end, the second free end faces the first free end, a gap is formed between the second free end and the first free end, and the second radiator is electromagnetically coupled to the first radiator through the gap.

3. The electronic device according to claim 2, characterized in that: The multiple grounding points include a first grounding point, a second grounding point, and a third grounding point, wherein the first grounding point, the second grounding point, and the third grounding point are sequentially away from the second free end; When the first grounding point is electrically connected to the floor, and the second grounding point and the third grounding point are both electrically disconnected from the floor, the excitation signal excites the portion between the first grounding point and the second free end of the second radiator to generate a quarter-wavelength resonant mode corresponding to the target frequency band; When the second grounding point is electrically connected to the floor, and the first grounding point and the third grounding point are both electrically disconnected from the floor, the excitation signal excites the second radiator to generate a half-wavelength resonance mode corresponding to the target frequency band; When the third grounding point is electrically connected to the floor and the first grounding point and the second grounding point are both electrically disconnected from the floor, the excitation signal excites the second radiator to generate a three-quarter wavelength resonance mode corresponding to the target frequency band.

4. The electronic device according to claim 3, characterized in that: When the first grounding point is electrically connected to the floor, and the second grounding point and the third grounding point are both electrically disconnected from the floor, the excitation signal excites the first radiator to generate a first resonant current, excites the second radiator to generate a second resonant current, and excites the floor to generate a third resonant current, the first resonant current and the second resonant current are in the same direction, and the third resonant current is mainly distributed in a first area of ​​the floor, and the first area is located on a side of the first radiator away from the second radiator.

5. The electronic device according to claim 3, characterized in that: When the second grounding point is electrically connected to the floor and the first grounding point and the third grounding point are both electrically disconnected from the floor, the excitation signal excites the first radiator to generate a fourth resonant current, excites the second radiator to generate a fifth resonant current, and excites the floor to generate a sixth resonant current, the fourth resonant current is opposite to the fifth resonant current, and the sixth resonant current is distributed on the floor.

6. The electronic device according to claim 5, characterized in that: When the third grounding point is electrically connected to the floor and the first grounding point and the second grounding point are both electrically disconnected from the floor, the excitation signal excites the first radiator to generate a seventh resonant current, excites the second radiator to generate an eighth resonant current, and excites the floor to generate a ninth resonant current, the seventh resonant current is opposite to the eighth resonant current, the ninth resonant current is distributed on the floor, and the intensity of the ninth resonant current is greater than the intensity of the sixth resonant current.

7. The electronic device according to any one of claims 3 to 6, characterized in that: Also included is a tuning switch, the tuning switch comprising: a plurality of first ports, wherein each of the first grounding point, the second grounding point, and the third grounding point is electrically connected to one of the first ports; A second port is electrically connected to the floor, and the second port can be connected to any one of the first ports to ground one of the first grounding point, the second grounding point, and the third grounding point.

8. The electronic device according to claim 7, characterized in that: Also includes: a first matching unit, wherein the first matching unit is arranged between the second grounding point and one of the first ports; A second matching unit, wherein the second matching unit is arranged between the third grounding point and another first port, and an impedance of the second matching unit is different from an impedance of the first matching unit.

9. The electronic device according to claim 8, characterized in that: The first matching unit includes a capacitor, and the second matching unit includes an inductor.

10. The electronic device according to any one of claims 3 to 6, characterized in that: Also includes: a first switch, one end of which is electrically connected to the first grounding point, and the other end of which is electrically connected to the floor; a second switch, one end of which is electrically connected to the second grounding point, and the other end of which is electrically connected to the floor; a third switch, one end of which is electrically connected to the third grounding point, and the other end of which is electrically connected to the floor; When one of the first switch, the second switch and the third switch is turned on, the other two are turned off.

11. The electronic device according to claim 10, characterized in that: Also includes: a first matching unit, wherein the first matching unit is arranged between the second grounding point and the second switch; A second matching unit, wherein the second matching unit is arranged between the third grounding point and the third switch, and an impedance of the second matching unit is different from an impedance of the first matching unit.

12. The electronic device according to any one of claims 1 to 6, characterized in that: The excitation signal is used to excite the first radiator, the second radiator, and the floor to resonate together to form a directional pattern of the 5G frequency band of WiFi communication.

13. The electronic device according to any one of claims 1 to 6, characterized in that: Also includes: a main body portion, the main body portion including side edges; The first radiator and the second radiator are arranged at intervals on the side.

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