electronic devices

Abstract

The present application discloses an electronic device, which includes: multiple antenna bodies, a specific absorption rate sensor, a first inductor and multiple capacitor devices with adjustable capacitance values, wherein: the multiple antenna bodies are connected to each other, and a grounding point is set on the antenna body; the first end of the first inductor is connected to the specific absorption rate sensor, and the second end of the first inductor is connected to any one of the multiple antenna bodies; the first end of the capacitor device is connected to the grounding point, and the second end of the capacitor device is grounded; when the antenna body is working, the capacitance value of the capacitor device increases, and when the antenna body is not working, the capacitance value of the capacitor device decreases; wherein the states of the multiple antenna bodies are not completely the same.

Description

Technical Field

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

[0002] Users are spending more and more time with electronic devices like mobile phones and tablets. With rising safety awareness, users are becoming increasingly concerned about the human body radiation emitted by electronic devices. Currently, the Specific Absorption Rate (SAR) is used internationally to measure the degree to which the human body absorbs the energy radiated by electronic devices. Based on this, many electronic devices have added SAR sensors to sense human contact and reduce power accordingly. SAR sensors function by measuring the change in capacitance between the sensor and the human body, so the distance between the sensor and the human body is crucial. Since the sensor is made of metal, and the outermost part of an electronic device is typically designed as an antenna, most SAR sensors currently share a common antenna body. The sensing distance of a SAR sensor is primarily related to the area of ​​the antenna body.

[0003] In related technologies, multiple antenna bodies are cascaded to increase their area, thereby increasing the SAR sensor's sensing range. Furthermore, to block the SAR sensor's DC signal, DC-blocking capacitors are connected in series at the antenna feed / ground points. However, connecting DC-blocking capacitors in series at the feed / ground points of multiple antenna bodies can cause the overall capacitance of the cascaded antenna to exceed the SAR sensor's inherent capacitance limit for the cumulative capacitance of the path, potentially causing device failure and malfunction of the SAR sensor. Reducing the size of the DC-blocking capacitors can also affect antenna performance. Summary of the Invention

[0004] The present application discloses an electronic device that can prevent the overall capacitance value of a cascade antenna from exceeding the capacitance limit of a SAR sensor itself for the accumulated capacitance on the path while reducing the impact on antenna performance.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] An embodiment of the present application discloses an electronic device, comprising: multiple antenna bodies, a specific absorption rate sensor, a first inductor, and multiple capacitor devices with adjustable capacitance values, wherein: the multiple antenna bodies are connected to each other, and a grounding point is set on the antenna body; the first end of the first inductor is connected to the specific absorption rate sensor, and the second end of the first inductor is connected to any one of the multiple antenna bodies; the first end of the capacitor device is connected to the grounding point, and the second end of the capacitor device is grounded; when the antenna body is working, the capacitance value of the capacitor device increases, and when the antenna body is not working, the capacitance value of the capacitor device decreases; wherein the states of the multiple antenna bodies are not exactly the same.

[0007] An embodiment of the present application provides an electronic device, comprising multiple antenna bodies, a specific absorption rate sensor, a first inductor, and multiple capacitor devices with adjustable capacitance values. The multiple antenna bodies are connected to each other, each of the multiple antenna bodies is provided with a ground point, a first end of the first inductor is connected to the specific absorption rate sensor, a second end of the first inductor is connected to any antenna body of the multiple antenna bodies, a first end of the capacitor device is connected to the ground point, and a second end of the capacitor device is connected to ground. When any antenna body of the multiple antenna bodies is operating, the capacitance value of the capacitor device provided between the ground point of the antenna body and the ground increases; when the antenna body is not operating, the capacitance value of the capacitor device provided between the ground point of the antenna body and the ground decreases. Furthermore, the multiple antenna bodies are in different states, thereby preventing the overall capacitance value of the cascaded antenna from exceeding the capacitance limit of the SAR sensor itself for the accumulated capacitance in the path, while minimizing the impact on antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic structural diagram of an electronic device disclosed in an embodiment of the present application;

[0009] Figure 2 A schematic structural diagram of another electronic device disclosed in an embodiment of the present application;

[0010] Figure 3 This is a structural diagram of another electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0011] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0012] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0013] This application discloses an electronic device, Figure 1 This is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application.

[0014] like Figure 1 As shown, the electronic device disclosed in the present application includes: multiple antenna bodies, a specific absorption rate sensor 110, a first inductor 120 and multiple capacitor devices 130 with adjustable capacitance values, wherein: the multiple antenna bodies are connected to each other, and a grounding point is set on the antenna body; the first end of the first inductor 120 is connected to the specific absorption rate sensor 110, and the second end of the first inductor 120 is connected to any antenna body among the multiple antenna bodies; the first end of the capacitor device 130 is connected to the grounding point, and the second end of the capacitor device 130 is grounded; when the antenna body is working, the capacitance value of the capacitor device 130 increases, and when the antenna body is not working, the capacitance value of the capacitor device 130 decreases; wherein, the states of the multiple antenna bodies are not exactly the same.

[0015] In the present application, the first end of the first inductor 120 is connected to the specific absorption rate sensor 110, and the second end of the first inductor 120 is connected to any one of the multiple antenna bodies. The first inductor 120 can be a large inductor, which acts as an RF choke to block the RF signal of the antenna.

[0016] Multiple antenna bodies are connected to increase the area of ​​the antenna body, thereby increasing the sensing distance and detection distance of the SAR sensor. For example, multiple antenna bodies can be connected by wires or cascade lines. The cascade line can be a microstrip line on a printed circuit board (PCB). When two antenna bodies are connected by a microstrip line, the feed / ground springs of the two adjacent antenna bodies can be connected by the microstrip line to physically connect the two antenna bodies. When two antenna bodies are connected by a cascade line, a large inductor can be connected in series between the two antenna bodies to increase the isolation between the antennas and reduce the impact of the antennas on each other.

[0017] Each of the multiple antenna bodies is provided with a grounding point, and a capacitor device 130 with an adjustable capacitance value is provided between the grounding point of each antenna body and the ground. The capacitance value of the capacitor device 130 can be adjusted according to the working state of the antenna body corresponding to the capacitor device 130.

[0018] It should be noted that the states of the multiple antenna bodies in the present application are not exactly the same. The states of the antenna bodies include the antenna body working and the antenna body not working, that is, the multiple antenna bodies will not work at the same time / not work at the same time. Exemplarily, in the case where the multiple antenna bodies include the first antenna body and the second antenna body, when the first antenna body is working, the second antenna body is not working, that is, the capacitance value of the capacitor device corresponding to the first antenna body is increased, and the capacitance value of the capacitor device corresponding to the second antenna body is reduced; in the case where the multiple antenna bodies include the first antenna body, the second antenna body and the third antenna body, when the first antenna body and the second antenna body are working, the third antenna body is not working, that is, the capacitance value of the capacitor device corresponding to the first antenna body and the capacitance value of the capacitor device corresponding to the second antenna body are respectively increased, and the capacitance value of the capacitor device corresponding to the third antenna body is reduced; in the case where the multiple antenna bodies include the first antenna body, the second antenna body, the third antenna body and the fourth antenna body, when the first antenna body and the second antenna body are working, the third antenna body and the fourth antenna body are not working, that is, the capacitance value of the capacitor device corresponding to the first antenna body is respectively increased. The capacitance value of the capacitor device corresponding to the second antenna body is increased, and the capacitance value of the capacitor device corresponding to the third antenna body and the capacitance value of the capacitor device corresponding to the fourth antenna body are respectively reduced. When the multiple antenna bodies include a first antenna body, a second antenna body, a third antenna body, a fourth antenna body, and a fifth antenna body, when the first antenna body, the second antenna body, and the third antenna body are in operation, the fourth antenna body and the fifth antenna body are inoperative. That is, the capacitance value of the capacitor device corresponding to the first antenna body, the capacitance value of the capacitor device corresponding to the second antenna body, and the capacitance value of the capacitor device corresponding to the third antenna body are respectively increased, and the capacitance value of the capacitor device corresponding to the fourth antenna body and the capacitance value of the capacitor device corresponding to the fifth antenna body are respectively reduced. With the above solution, the capacitance value of the capacitor device corresponding to the inoperative antenna body is reduced, thereby preventing the overall antenna capacitance from exceeding the capacitance limit of the SAR sensor itself for the accumulated capacitance on the path, thereby preventing device failure. The capacitance value of the capacitor device corresponding to the operational antenna body is increased, thereby minimizing the impact on antenna performance.

[0019] In the embodiment of the present application, the overall capacitance value of the cascade antenna (i.e., the sum of the capacitance values ​​corresponding to multiple antenna bodies) is less than the capacitance limit and remains within the threshold range. The capacitance limit is the limit of the SAR Sensor itself for the accumulated capacitance on the path.

[0020] Taking the example of multiple antenna bodies including a first antenna body 141 and a second antenna body 142, and multiple capacitor devices 130 with adjustable capacitance values ​​including a first capacitor device with adjustable capacitance value and a second capacitor device with adjustable capacitance value, a first capacitor device is provided between the grounding point of first antenna body 141 and the ground, with a first end of the first capacitor device connected to the grounding point provided on first antenna body 141 and a second end of the first capacitor device connected to the ground. A second capacitor device is provided between the grounding point of second antenna body 142 and the ground, with a first end of the second capacitor device connected to the grounding point provided on second antenna body 142 and a second end of the second capacitor device connected to the ground. When first antenna body 141 is operating, the capacitance value of the first capacitor device increases while the capacitance value of the second capacitor device decreases. When second antenna body 142 is operating, the capacitance value of the second capacitor device increases while the capacitance value of the first capacitor device decreases. This ensures that the overall capacitance value of the cascaded antenna is less than the capacitance limit and remains within the threshold range while ensuring antenna performance.

[0021] An embodiment of the present application provides an electronic device, comprising multiple antenna bodies, a specific absorption rate sensor 110, a first inductor 120, and multiple capacitor devices 130 with adjustable capacitance values. The multiple antenna bodies are connected to each other, each of which has a ground point. A first end of the first inductor 120 is connected to the specific absorption rate sensor 110, and a second end of the first inductor 120 is connected to any antenna body in the multiple antenna bodies. A first end of the capacitor device 130 is connected to the ground point, and a second end of the capacitor device 130 is grounded. When any antenna body in the multiple antenna bodies is operating, the capacitance of the capacitor device 130 disposed between the ground point of the antenna body and the ground increases. When the antenna body is not operating, the capacitance of the capacitor device 130 disposed between the ground point of the antenna body and the ground decreases. Furthermore, the multiple antenna bodies are in different states, thereby preventing the overall capacitance of the cascaded antenna from exceeding the capacitance limit of the SAR sensor itself for the cumulative capacitance in the path, while minimizing the impact on antenna performance.

[0022] In the embodiments of this application, Figure 1As shown, capacitor device 130 includes a first capacitor 131 and a capacitor sub-device 132 with an adjustable capacitance value. The first end of first capacitor 131 is connected to a ground point, the second end of first capacitor 131 is connected to a first end of capacitor sub-device 132, and the second end of capacitor sub-device 132 is grounded. In other words, the present application utilizes capacitor sub-device 132 with an adjustable capacitance value to achieve adjustable capacitance value for capacitor device 130.

[0023] In one implementation, Figure 1 As shown, the capacitor sub-device 132 includes a resistor 1321, a second capacitor 1322, and a first switch module 1323, wherein: the first end of the resistor 1321 is connected to the second end of the first capacitor 131, and the second end of the resistor 1321 is connected to the first end of the first switch module 1323; the first end of the second capacitor 1322 is connected to the second end of the first capacitor 131, and the second end of the second capacitor 1322 is connected to the first end of the first switch module 1323; the second end of the first switch module 1323 is grounded; and the first switch module 1323 is used to control the second end of the resistor 1321 or the second end of the second capacitor 1322 to be grounded. In other words, the capacitance value of the capacitor sub-device 132 can be adjusted by controlling the second end of the resistor 1321 or the second end of the second capacitor 1322 to be grounded through the first switch module 1323.

[0024] In the present application, when the antenna body is operating, the first switch module 1323 controls the second end of the resistor 1321 to be grounded; when the antenna body is not operating, the first switch module 1323 controls the second end of the second capacitor 1322 to be grounded. For example, the controller may send a control signal to the first switch module 1323 based on the current frequency band of the antenna body. When the antenna body is in the operating frequency band, the controller sends a first control signal to the first switch module 1323 to control the second end of the resistor 1321 to be grounded. When the antenna body is in the non-operating frequency band, the controller sends a second control signal to the first switch module 1323 to control the second end of the second capacitor 1322 to be grounded.

[0025] In one implementation, the states of the multiple antenna bodies are not completely identical, and the sum of the adjusted capacitance values ​​of the multiple capacitor devices 130 with adjustable capacitance values ​​remains constant. The number of the multiple antenna bodies is N. When N is an odd number, the number of antenna bodies in the working state is one more or one less than the number of antenna bodies in the non-working state; when N is an even number, the number of antenna bodies in the working state is equal to the number of antenna bodies in the non-working state. The antenna body in the working state receives the feed signal from the feed structure directly connected thereto.

[0026] For example, Figure 1As shown, in the case where the plurality of antenna bodies include a first antenna body 141 and a second antenna body 142, and the capacitance values ​​of the first capacitor 131 and the second capacitor 1322 are both C1, when the first antenna body 141 is working, the first switch module 1323 (i.e. Figure 1 SW1 in the control resistor 1321 is grounded, that is, SW1 controls the connection between the resistor 1321 and the ground, and the capacitance value at the grounding point of the first antenna body 141 is C1. At the same time, the first switch module 1323 (i.e. Figure 1 SW2 in the circuit) controls the second end of the second capacitor 1322 to be grounded, that is, SW2 controls the conduction between the second capacitor 1322 and the ground. The capacitance value at the grounding point of the second antenna body 142 is C1 / 2, and the capacitance value at the grounding point of the entire cascade antenna is 3C1 / 2. Similarly, when the second antenna body 142 is working, the first switch module 1323 (i.e. Figure 1 SW2 in the control resistor 1321 is grounded, that is, SW2 controls the connection between the resistor 1321 and the ground, and the capacitance value at the grounding point of the second antenna body 142 is C1. At the same time, the first switch module 1323 (i.e. Figure 1 SW1 in the circuit controls the grounding of the second end of the second capacitor 1322, i.e., SW1 controls the conduction between the second capacitor 1322 and the ground. The capacitance value at the grounding point of the first antenna body 141 is C1 / 2, and the capacitance value at the grounding point of the entire cascade antenna is also 3C1 / 2. When the antenna body is operating, the capacitance value at the grounding point of the antenna body increases from C1 / 2 to C1, which can improve the antenna's ground return effect, thereby improving the antenna's bandwidth and overall performance. When the antenna body is not operating, the capacitance value at the grounding point of the antenna body decreases from C1 to C1 / 2, preventing the overall capacitance of the cascade antenna from exceeding the capacitance limit of the SAR sensor itself for the accumulated capacitance in the path, thereby preventing device failure. Furthermore, the above embodiment can ensure that the overall capacitance of the cascade antenna remains constant when either the first antenna body or the second antenna body is operating.

[0027] In one possible implementation, the capacitance values ​​of the first capacitor 131 in the capacitor device 130 and the second capacitor 1322 in the capacitor sub-device 132 can be the same. When the capacitance values ​​of the first capacitor 131 and the second capacitor 1322 are the same, the voltage division on the first capacitor 131 and the second capacitor 1322 is the same, which can protect the first capacitor 131 and the second capacitor 1322.

[0028] In the embodiment of the present application, the resistance of the resistor 1321 in the capacitor device 132 may be 0 ohm.

[0029] In a possible implementation, the first switch module 1323 may be a single-pole double-throw switch, that is, the second end of the resistor 1321 or the second end of the second capacitor 1322 is controlled to be grounded by the single-pole double-throw switch.

[0030] In another possible implementation scheme, the first switch module 1323 may include a first switch and a second switch, the first end of the first switch is connected to the second end of the resistor 1321, the second end of the first switch is grounded, the first end of the second switch is connected to the second end of the second capacitor 1322, and the second end of the second switch is grounded. By controlling the first switch or the second switch to be turned on, the capacitance value of the capacitor device 132 is adjusted.

[0031] In one implementation, Figure 2 As shown, the capacitor sub-device 132 includes a second inductor 1324, a third capacitor 1325, and a second switch module 1326. The first end of the second inductor 1324 is connected to the second end of the first capacitor 131, and the second end of the second inductor 1324 is connected to the first end of the second switch module 1326. The first end of the third capacitor 1325 is connected to the second end of the first capacitor 131, and the second end of the third capacitor 1325 is connected to the first end of the second switch module 1326. The second end of the second switch module 1326 is grounded. The second switch module 1326 is configured to control the grounding of the second end of the second inductor 1324 or the second end of the third capacitor 1325. In other words, the capacitance of the capacitor sub-device 132 can be adjusted by controlling the grounding of the second end of the second inductor 1324 or the second end of the third capacitor 1325 through the second switch module 1326.

[0032] In the present application, when the antenna body is operating, the second switch module 1326 controls the second end of the second inductor 1324 to be grounded; when the antenna body is not operating, the second switch module 1326 controls the second end of the third capacitor 1325 to be grounded. For example, the controller may send a control signal to the second switch module 1326 based on the current frequency band of the antenna body. When the antenna body is in the operating frequency band, the controller sends a third control signal to the second switch module 1326 to control the second end of the second inductor 1324 to be grounded. When the antenna body is in the non-operating frequency band, the controller sends a fourth control signal to the second switch module 1326 to control the second end of the third capacitor 1325 to be grounded.

[0033] Furthermore, the second inductor 1324 in the capacitor device 132 acts as a direct path for the SAR sensor detection signal and has no effect on the capacitance value of the entire path. However, for high-frequency signals below the resonant frequency, the series LC path formed by the second inductor 1324 and the first capacitor 131 causes the equivalent capacitance value at the grounding point of the antenna body to be greater than the capacitance value of the first capacitor 131 itself when the second switch module 1326 controls the second end of the second inductor 1324 to be grounded. This facilitates the return of high-frequency signals to ground, thereby reducing the impact of the capacitance value on antenna performance.

[0034] For example, Figure 2 As shown, in the case where the plurality of antenna bodies include a first antenna body 141 and a second antenna body 142, and the capacitance values ​​of the first capacitor 131 and the third capacitor 1325 are both C1, when the first antenna body 141 is working, the second switch module 1326 (i.e. Figure 2 SW1 in the figure controls the second end of the second inductor 1324 to be grounded, that is, SW1 controls the conduction between the second inductor 1324 and the ground, and the capacitance value at the grounding point of the first antenna body 141 is greater than C1. At the same time, the second switch module 1326 (i.e. Figure 2 SW2 in the circuit) controls the second end of the third capacitor 1325 to be grounded, that is, SW2 controls the third capacitor 1325 to be conductive with the ground, and the capacitance value at the grounding point of the second antenna body 142 is C1 / 2. Similarly, when the second antenna body 142 is working, the second switch module 1326 (i.e. Figure 2 SW2 in the figure controls the second end of the second inductor 1324 to be grounded, that is, SW2 controls the conduction between the second inductor 1324 and the ground, and the capacitance value at the grounding point of the second antenna body 142 is greater than C1. At the same time, the second switch module 1326 (i.e. Figure 2 SW1 in the circuit controls the grounding of the second end of the third capacitor 1325, i.e., SW1 controls the conduction between the third capacitor 1325 and the ground. The capacitance at the ground point of the first antenna body 141 is C1 / 2. When the antenna body is operating, the capacitance at the ground point of the antenna body increases, which can improve the antenna's ground return effect, thereby improving the antenna's bandwidth and overall performance. When the antenna body is not operating, the capacitance at the ground point of the antenna body decreases, preventing the overall capacitance of the cascaded antenna from exceeding the capacitance limit of the SAR sensor itself for the accumulated capacitance in the path, thereby preventing device failure. Furthermore, the above embodiment can ensure that the overall capacitance of the cascaded antenna remains constant when either the first antenna body or the second antenna body is operating.

[0035] In one implementation, Figure 3As shown, the capacitor device 130 with adjustable capacitance value is a capacitor with adjustable capacitance value.

[0036] Taking the example of multiple antenna bodies including a first antenna body 141 and a second antenna body 142, and multiple adjustable capacitance capacitor devices 130 including a first adjustable capacitance capacitor device and a second adjustable capacitance capacitor device, where the first capacitor device is a fifth adjustable capacitance capacitor and the second capacitor device is a sixth adjustable capacitance capacitor, a fifth capacitor is provided between the grounding point of the first antenna body 141 and ground, with a first end of the fifth capacitor connected to the grounding point provided on the first antenna body 141 and a second end of the fifth capacitor connected to ground. A sixth capacitor is provided between the grounding point of the second antenna body 142 and ground, with a first end of the sixth capacitor connected to the grounding point provided on the second antenna body 142 and a second end of the sixth capacitor connected to ground. When the first antenna body 141 is operating, the capacitance of the fifth capacitor increases while the capacitance of the sixth capacitor decreases. When the second antenna body 142 is operating, the capacitance of the sixth capacitor increases while the capacitance of the fifth capacitor decreases. This ensures that the overall capacitance of the cascaded antenna is less than the capacitance limit and remains within the threshold range while ensuring antenna performance.

[0037] In the embodiments of this application, Figures 1 to 3 As shown, the electronic device may further include: a fourth capacitor 210 and a feeding structure 220, wherein: a feeding point is provided on the antenna body; a first end of the fourth capacitor 210 is connected to the feeding point, and a second end of the fourth capacitor 210 is connected to a first end of the feeding structure 220; and a second end of the feeding structure 220 is grounded. In the present application, the fourth capacitor 210 may be a capacitor with an adjustable capacitance value. That is, the capacitance value of the antenna body can be adjusted by simultaneously adjusting the capacitance value of the capacitor device 130 connected to the grounding point of the antenna body and the capacitance value of the fourth capacitor 210 connected to the feeding point of the antenna body.

[0038] In addition, the fourth capacitor 210 can be replaced by a capacitor device with adjustable capacitance value described in the above embodiment to adjust the capacitance value at the feeding point of the antenna body. For example, the first end of the capacitor device is connected to the feeding point of the antenna body, and the second end of the capacitor device is connected to the first end of the feeding structure 220. Since the specific structure of the capacitor device is the same as the capacitor device 130 described in the above embodiment, it will not be repeated here.

[0039] The electronic devices disclosed in the embodiments of the present application may be smart watches, mobile phones, tablet computers, e-book readers, game consoles, wearable devices, etc. The embodiments of the present application do not limit the specific types of electronic devices.

[0040] The above embodiments of this application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0041] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. An electronic device, characterized in that: include: A plurality of antenna bodies, a specific absorption rate sensor (110), a first inductor (120), and a plurality of capacitance devices (130) with adjustable capacitance values, wherein: The plurality of antenna bodies are connected to each other, and a grounding point is set on the antenna body; A first end of the first inductor (120) is connected to the specific absorption rate sensor (110), and a second end of the first inductor (120) is connected to any one of the plurality of antenna bodies; The first end of the capacitor device (130) is connected to the grounding point, the second end of the capacitor device (130) is grounded, and the capacitor device (130) is provided between the grounding point of each antenna body and the ground; when the antenna body is working, the capacitance value of the capacitor device (130) connected to the working antenna body increases, while the capacitance values ​​of the remaining capacitor devices (130) decrease; when the antenna body is not working, the capacitance value of the capacitor device (130) connected to the non-working antenna body decreases, while the capacitance values ​​of the remaining capacitor devices (130) increase; The states of the plurality of antenna bodies are not completely the same, and the states of the antenna bodies include the states of the antenna bodies being in operation and the states of the antenna bodies being inoperable.

2. The electronic device according to claim 1, wherein The capacitor device (130) comprises a first capacitor (131) and a capacitor sub-device (132) with an adjustable capacitance value, wherein: The first end of the first capacitor (131) is connected to the ground point, and the second end of the first capacitor (131) is connected to the first end of the capacitor sub-device (132); The second end of the capacitor device (132) is grounded.

3. The electronic device according to claim 2, wherein: The capacitor sub-device (132) comprises a resistor (1321), a second capacitor (1322) and a first switch module (1323), wherein: The first end of the resistor (1321) is connected to the second end of the first capacitor (131), and the second end of the resistor (1321) is connected to the first end of the first switch module (1323); The first end of the second capacitor (1322) is connected to the second end of the first capacitor (131), and the second end of the second capacitor (1322) is connected to the first end of the first switch module (1323); The second end of the first switch module (1323) is grounded; The first switch module (1323) is used to control the second end of the resistor (1321) or the second end of the second capacitor (1322) to be grounded.

4. The electronic device according to claim 3, wherein: When the antenna body is in operation, the first switch module (1323) controls the second end of the resistor (1321) to be grounded; When the antenna body is not working, the first switch module (1323) controls the second end of the second capacitor (1322) to be grounded.

5. The electronic device according to claim 3, wherein: The first capacitor (131) and the second capacitor (1322) have the same capacitance value.

6. The electronic device according to claim 3, wherein: The resistance of the resistor (1321) is 0 ohm.

7. The electronic device according to claim 3, wherein: The first switch module (1323) is a single-pole double-throw switch.

8. The electronic device according to claim 2, wherein: The capacitor device (132) comprises a second inductor (1324), a third capacitor (1325) and a second switch module (1326), wherein: The first end of the second inductor (1324) is connected to the second end of the first capacitor (131), and the second end of the second inductor (1324) is connected to the first end of the second switch module (1326); The first end of the third capacitor (1325) is connected to the second end of the first capacitor (131), and the second end of the third capacitor (1325) is connected to the first end of the second switch module (1326); The second end of the second switch module (1326) is grounded; The second switch module (1326) is used to control the second end of the second inductor (1324) or the second end of the third capacitor (1325) to be grounded.

9. The electronic device according to claim 8, wherein: When the antenna body is in operation, the second switch module (1326) controls the second end of the second inductor (1324) to be grounded; When the antenna body is not working, the second switch module (1326) controls the second end of the third capacitor (1325) to be grounded.

10. The electronic device according to claim 1, wherein The capacitance device (130) with adjustable capacitance value is a capacitor with adjustable capacitance value.

11. The electronic device according to claim 1, wherein It also includes: a fourth capacitor (210) and a feeding structure (220), wherein: The antenna body is provided with a feeding point; A first end of the fourth capacitor (210) is connected to the feeding point, and a second end of the fourth capacitor (210) is connected to a first end of the feeding structure (220); The second end of the feeding structure (220) is grounded.

12. The electronic device according to claim 11, wherein: The fourth capacitor (210) is a capacitor with an adjustable capacitance value.

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