An electronic device

Abstract

The application discloses an electronic device, comprising: an antenna module, a filter unit and a specific absorption rate (SAR) processing unit, the antenna module comprising a first antenna radiator and a second antenna radiator; the first antenna radiator is connected in series with the second antenna radiator through the filter unit; the SAR processing unit is connected with the first antenna radiator, and the filter unit supports the passage of a SAR signal; or, the SAR processing unit is connected with the first antenna radiator and the second antenna radiator respectively, and the filter unit blocks the passage of the SAR signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic products, and in particular to an electronic device. BACKGROUND

[0002] An electronic device configured with an antenna transmitting device will generate electromagnetic radiation. In order to reduce the influence of electromagnetic radiation on a user, when the user uses the electronic device, the distance of the user is detected through a built-in capacitive proximity sensor on the electronic device. When the distance of the user reaches a certain threshold, the radiation of the antenna is reduced, thereby reducing the radiation on the user. At present, the area of the capacitive plate of the built-in capacitive proximity sensor on the electronic device is small, which limits the detection distance, and the detection result is greatly affected by the environment. SUMMARY

[0003] Embodiments of the present application provide an electronic device to solve the problem that the built-in capacitive proximity sensor on the electronic device has a limited detection distance and the detection result is greatly affected by the environment.

[0004] To solve the above technical problems, the present application is implemented as follows:

[0005] Embodiments of the present application provide an electronic device, comprising:

[0006] An antenna module, comprising a first antenna radiator and a second antenna radiator;

[0007] A filter unit, the first antenna radiator is connected in series with the second antenna radiator through the filter unit;

[0008] A specific absorption rate (SAR) processing unit, the SAR processing unit is connected with the first antenna radiator, and the filter unit supports the passage of the SAR signal; or, the SAR processing unit is connected with the first antenna radiator and the second antenna radiator respectively, and the filter unit blocks the passage of the SAR signal.

[0009] In this way, in the above scheme of the application, the first antenna radiator and the second antenna radiator in the antenna module are connected through the filtering unit. The SAR processing unit is connected with the first antenna radiator, and the filtering unit supports the SAR signal to pass through, so that the first antenna radiator and the second antenna radiator can jointly constitute the capacitive plate of the SAR sensor, so as to ensure that the antenna radiator in the multiplexing electronic device realizes SAR detection, and is conducive to increasing the area of the capacitive plate, so that the detection distance can be increased; or the SAR processing unit is connected with the first antenna radiator and the second antenna radiator respectively, and the filtering unit blocks the SAR signal to pass through, so that the first antenna radiator and the second antenna radiator can independently constitute two capacitive plates of the SAR sensor, so that the SAR detection result can be improved in accuracy by mutual compensation of multiple independent capacitive plates, so that the scheme can solve the problems that the capacitive proximity sensor built-in in the electronic device is limited in detection distance, and the detection result is greatly affected by the environment. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 A structural block diagram of an electronic device according to an embodiment of the application is shown;

[0011] Figure 2 A structural block diagram of an electronic device according to an embodiment of the application is shown;

[0012] Figure 3 A structural block diagram of an electronic device according to an embodiment of the application is shown;

[0013] Figure 4 A structural block diagram of an electronic device according to an embodiment of the application is shown;

[0014] Figure 5 A structural block diagram of an electronic device according to an embodiment of the application is shown;

[0015] Figure 6 A structural block diagram of an electronic device according to an embodiment of the application is shown. DETAILED DESCRIPTION

[0016] Exemplary embodiments of the application will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the application are shown in the drawings, it should be understood that the application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the application can be more thoroughly understood and the scope of the application can be accurately conveyed to those skilled in the art.

[0017] As shown in Figure 1 , the application provides an electronic device, comprising:

[0018] The antenna module 1 comprises a first antenna radiator 101 and a second antenna radiator 102;

[0019] The filter unit 2 is connected in series between the first antenna radiator 101 and the second antenna radiator 102.

[0020] The SAR processing unit 3 is connected to the first antenna radiator 101, and the filter unit 2 supports the SAR signal to pass through; or the SAR processing unit 3 is connected to the first antenna radiator 101 and the second antenna radiator 102 respectively, and the filter unit 2 blocks the SAR signal to pass through.

[0021] Optionally, the detection channel of the SAR processing unit 3 can be assembled on the antenna radiator through the antenna shell, that is, the detection channel of the SAR processing unit 3 can be connected to the first antenna radiator 101 through the antenna shell, or the detection channel of the SAR processing unit 3 can be connected to the first antenna radiator 101 and the second antenna radiator 102 respectively through the antenna shell.

[0022] Wherein, the filter unit 2 supporting the SAR signal to pass through means that for the SAR signal, the current can be transmitted between the first antenna radiator 101 and the second antenna radiator 102. The filter unit 2 blocks the SAR signal to pass through means that for the SAR signal, the current cannot be transmitted between the first antenna radiator 101 and the second antenna radiator 102.

[0023] Optionally, the capacitive proximity sensor, that is, the SAR sensor in the electronic device comprises a capacitive plate and a SAR processing unit 3; wherein, in the case that the filter unit 2 supports the SAR signal to pass through, the first antenna radiator 101 and the second antenna radiator 102 can jointly constitute the capacitive plate of the SAR sensor, so as to ensure that the antenna radiator in the multiplexing electronic device realizes SAR detection, and is conducive to increasing the area of the capacitive plate, so as to increase the detection distance; in the case that the filter unit 2 blocks the SAR signal to pass through, the first antenna radiator 101 and the second antenna radiator 102 can independently constitute two capacitive plates of the SAR sensor, so that the multiple independent capacitive plates can be mutually compensated to improve the accuracy of the SAR detection result.

[0024] The principle of SAR distance detection is described as follows:

[0025] The SAR sensor, such as the capacitive proximity sensor, can multiplex the antenna radiator in the electronic device as the capacitive plate. Based on the following capacitance determination formula, the change of the object close to the external medium will cause the change of the dielectric constant, so the capacitance between the capacitive plate and the ground will change.

[0026]

[0027] Wherein: C: the capacitance between the capacitor plate and the ground; k: the electrostatic force constant; S: the plate area; ε: the dielectric constant; h: the distance between the object and the plate.

[0028] In addition, based on the following capacitance calculation formula, the same amount of charge is used to charge the capacitor, and due to the change of the capacitance, the voltage difference between the capacitor plate and the ground changes, and by detecting the change of the plate voltage, the change amount of the external capacitance can be judged, thereby inferring the distance of the object approaching.

[0029]

[0030] Wherein: C: the capacitance between the capacitor plate and the ground; Q: the amount of charge; U: the voltage difference between the plate and the ground.

[0031] In the above scheme, the first antenna radiator 101 and the second antenna radiator 102 in the antenna module 1 are connected through the filter unit 2. The SAR processing unit 3 is connected with the first antenna radiator 101, and the filter unit 2 supports the SAR signal to pass, so that the first antenna radiator 101 and the second antenna radiator 102 can jointly constitute the capacitor plate of the SAR sensor, so as to ensure that the antenna radiator in the multiplexing electronic device realizes the SAR detection, and is conducive to increasing the area of the capacitor plate, so as to increase the detection distance; or, the SAR processing unit 3 is connected with the first antenna radiator 101 and the second antenna radiator 102 respectively, and the filter unit 2 blocks the SAR signal to pass, so that the first antenna radiator 101 and the second antenna radiator 102 can respectively and independently constitute two capacitor plates of the SAR sensor, so that the mutual compensation of multiple independent capacitor plates can be realized to improve the accuracy of the SAR detection result, so that the scheme can solve the problems that the built-in capacitive proximity sensor on the electronic device is limited in detection distance, and the detection result is greatly affected by the environment.

[0032] As an optional embodiment, the filter unit 2 blocks the signals of the first frequency band and the second frequency band to pass. Here, the filter unit 2 blocks the signals of the first frequency band and the second frequency band to pass means that the current of the signals of the first frequency band and the second frequency band cannot be transmitted between the first antenna radiator 101 and the second antenna radiator 102.

[0033] As shown in Figure 2 The antenna module 1 comprises:

[0034] The first antenna unit 11 comprises the first antenna radiator 101 and a first feed source 110 connected with the first antenna radiator 101; the first antenna unit 11 works in the radiation mode of the first frequency band through the first antenna radiator 101.

[0035] The second antenna unit 12 comprises the second antenna radiator 102 and a second feed source 120 connected with the second antenna radiator 102; the second antenna unit 12 works in the radiation mode of the second frequency band through the second antenna radiator 102.

[0036] Optionally, the filter unit 2 comprises at least one of a capacitor element, an inductor element and a filter. Specifically, the parameter value of the capacitor element, the inductor element or the filter can be determined according to the first frequency band, the second frequency band and the SAR signal.

[0037] Optionally, in the case that the first antenna radiator 101 and the second antenna radiator 102 are arranged on the same side of the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101.

[0038] Taking the inductor element as an example of the filter unit 2, the first antenna radiator 101 of the first antenna unit 11 and the second antenna radiator 102 of the second antenna unit 12 are connected in series through the inductor, the detection channel A of the SAR processing unit 3 is connected with the first antenna radiator 101 (optionally, or the detection channel A of the SAR processing unit 3 can also be connected with the second antenna radiator 102), and the filter unit 2 blocks the signals of the first frequency band and the second frequency band. On the premise of ensuring the isolation degree of the first antenna unit 11 and the second antenna unit 12, the inductive area of the capacitive plate of the SAR sensor can be increased, so as to improve the detection distance of the SAR sensor.

[0039] In addition, the inductor element can also be replaced by a filter or a capacitor element, and the parameter value of the inductor element, the capacitor element or the filter is set to ensure that only the current of the SAR signal passes between the first antenna radiator 101 and the second antenna radiator 102, and the current of the first antenna radiator 101 and the second antenna radiator 102 cannot pass, so as to ensure that the first antenna unit 11 and the second antenna unit 12 can work normally.

[0040] Optionally, the first antenna radiator 101 and the second antenna radiator 102 are different in distance to the heat generating device in the electronic device, that is, the first antenna radiator 101 and the second antenna radiator 102 can be two antenna radiators different in distance to the heat generating device in the electronic device, so that when one of the antenna radiators is closer to the heat generating device and the other is farther away from the heat generating device, the two antenna radiators connected in series can be used as the capacitor plate of the SAR sensor, so as to reduce the influence of temperature rise on the SAR sensor.

[0041] As another optional embodiment, the filter unit 2 blocks the signals of the first frequency band and the second frequency band, and supports the signal of the third frequency band; wherein, the support of the filter unit 2 to the signal of the third frequency band means that the current of the signal of the third frequency band can be transmitted between the first antenna radiator 101 and the second antenna radiator 102. As will be described below, Figure 2 , the antenna module 1 works in the radiation mode of the third frequency band through the first antenna radiator 101 and the second antenna radiator 102.

[0042] Optionally, the filter unit 2 includes at least one of a capacitor element, an inductor element and a filter. Specifically, the parameter value of the capacitor element, the inductor element or the filter can be determined according to the first frequency band, the second frequency band, the third frequency band and the SAR signal.

[0043] In this embodiment, the first antenna radiator 101 of the first antenna unit 11 and the second antenna radiator 102 of the second antenna unit 12 are connected through the filter unit 2, and then the first antenna radiator 101 is connected to one detection channel A of the SAR processing unit, so as to increase the area of the capacitor plate. Further optionally, the first frequency band and the second frequency band are both higher than the third frequency band, and the parameter value of the capacitor element, the inductor element or the filter in the filter unit 2 can be set so that the signal of the low frequency antenna can be transmitted between the first antenna radiator 101 and the second antenna radiator 102, that is, the third frequency band is covered, so as to realize the multiplexing of the antenna radiators, so that the antenna module 1 covers more frequency bands in the same space.

[0044] Optionally, when the first antenna radiator 101 and the second antenna radiator 102 are arranged on the same side of the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101. In this way, the area of the capacitor plate can be increased, so that the detection distance can be increased. In addition, the first antenna radiator 101 and the second antenna radiator 102 can also be two antenna radiators with different distances to the heat generating device in the electronic device. In this way, when one of the antenna radiators is close to the heat generating device, and the other antenna radiator is far away from the heat generating device, the influence of temperature rise on the SAR sensor can be reduced by using the two antenna radiators in series as the capacitor plate of the SAR sensor.

[0045] Optionally, as shown in FIG. 1C, when the first antenna radiator 101 and the second antenna radiator 102 are arranged on different sides of the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101 and the second antenna radiator 102 respectively. Figure 3

[0046] For example, the detection channel A of the SAR processing unit 3 is connected with the first antenna radiator 101, and the detection channel B of the SAR processing unit 3 is connected with the second antenna radiator 102. For another example, the first antenna radiator 101 is arranged on the top of the electronic device, and the second antenna radiator 102 is arranged on the bottom of the electronic device. Alternatively, the first antenna radiator 101 is arranged on the top of the electronic device, and the second antenna radiator 102 is arranged on the side of the electronic device, so as to detect the distance of the different sides of the electronic device close to the user, and distinguish the approaching direction of the user without affecting the performance of the antenna.

[0047] Optionally, the filter unit 2 can be a low-resistance high-pass filter or a capacitor. The current of the first antenna unit 11 and the second antenna unit 12 can pass through the filter or the capacitor, while the current of the SAR signal cannot pass through. The SAR processing unit 3 is connected with the first antenna radiator 101 and the second antenna radiator 102 on different sides, so as to distinguish the approaching direction of the user, and call different SAR parameters.

[0048] ​Optionally, the first frequency band and the second frequency band are both higher than the third frequency band. The first frequency band and the second frequency band are 1710MHz-2690MHz, and the third frequency band is 700MHz-960MHz. The filter unit 2 can be a band-pass filter, which presents high resistance to SAR signals and high-frequency signals (i.e., signals of the first frequency band and the second frequency band, for example, 1710MHz-2690MHz) and cannot pass through, and presents low resistance to low-frequency signals (i.e., signals of the third frequency band, for example, 700MHz-960MHz) and can pass through. In this way, the first antenna unit 11 and the second antenna unit 12 can each serve as a high-frequency antenna, and the first antenna unit 11 and the second antenna unit 12 as a whole serve as a low-frequency antenna.

[0049] Of course, in addition to connecting the antenna radiators of the two antenna units on different sides of the electronic device in series through the filter unit 2, the antenna radiators of the antenna units on multiple sides of the electronic device can also be connected in series through multiple filter units 2 to realize a multi-frequency antenna, and at the same time, the multiple sides of the electronic device can be distinguished to detect the proximity distance of the user.

[0050] Optionally, as shown in FIG. 1, the first antenna radiator 101 and the second antenna radiator 102 are connected to the SAR processing unit 3. Figure 4

[0051] For example, the heat-generating device can be a mainboard, a chip arranged on the mainboard, or a chip arranged on a subboard, and the embodiments of the present application are not limited thereto. The following is described by taking the mainboard as an example. The second antenna unit 12 is closer to the mainboard than the first antenna unit 11, and the second antenna radiator 102 of the second antenna unit 12 is connected to the detection channel B (which can also be referred to as a compensation channel) of the SAR processing unit 3. The first antenna radiator 101 of the first antenna unit 11 is connected to the detection channel A (which can also be referred to as a sensing channel) of the SAR processing unit 3. Optionally, the first antenna radiator 101 and the second antenna radiator 102 are connected through a low-resistance high-pass filter or a capacitor. The currents of the first antenna unit 11 and the second antenna unit 12 can pass through the filter or the capacitor, and the current of the SAR signal cannot pass through, that is, the independent detection of the detection channel A and the detection channel B.

[0052] ​Since the second antenna unit 12 is closer to the mainboard than the first antenna unit 11, the temperature influence of the mainboard area can be compensated by the compensation channel (i.e. the detection channel B), such as SAR difference = detection channel response value - compensation channel response value, so as to facilitate setting a higher SAR threshold, realizing a farther triggering distance, and reducing the possibility of distance mis-detection caused by the interference of temperature rise on SAR detection.

[0053] Optionally, the first frequency band and the second frequency band are higher than the third frequency band. The first frequency band and the second frequency band are 1710MHz-2690MHz, and the third frequency band is 700MHz-960MHz. As the filter unit 2 can be a band-pass filter, it presents high resistance to SAR signals and high-frequency signals (i.e. signals of the first frequency band and the second frequency band, for example: 1710MHz-2690MHz) and cannot pass through, and presents low resistance to low-frequency signals (i.e. signals of the third frequency band, for example: 700MHz-960MHz) and can pass through. In this way, the first antenna unit 11 and the second antenna unit 12 can each serve as a high-frequency antenna, and the first antenna unit 11 and the second antenna unit 12 as a whole serve as a low-frequency antenna.

[0054] As another optional embodiment, the filter unit 2 blocks the passage of signals of the first frequency band and the second frequency band, and supports the passage of signals of the third frequency band. Optionally, the first frequency band and the second frequency band are lower than the third frequency band. As shown in the figure, the antenna module 1 comprises: Figure 5

[0055] The third antenna unit 13 comprises the first antenna radiator 101, the second antenna radiator 102, a third feed source 130 and a fourth feed source 131. The third feed source 130 is connected with the first antenna radiator 101, and the fourth feed source 131 is connected with the second antenna radiator 102.

[0056] The third antenna unit 13 works in the radiation mode of the first frequency band through the first antenna radiator 101, works in the radiation mode of the second frequency band through the second antenna radiator 102, and works in the radiation mode of the third frequency band through the first antenna radiator 101 and the second antenna radiator 102.

[0057] Optionally, the filter unit 2 comprises at least one of a capacitor element, an inductor element and a filter. Specifically, the parameter value of the capacitor element, the inductor element or the filter can be determined according to the first frequency band, the second frequency band, the third frequency band and the SAR signal.

[0058] ​Optionally, in the case that the first antenna radiator 101 and the second antenna radiator 102 are arranged on the same side of the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101.

[0059] For example, the third antenna unit 13 can have multiple antenna radiators, such as the first antenna radiator 101 and the second antenna radiator 102. The multiple antenna radiators are connected in series through the filter unit 2. By setting the parameter values of the filters, inductive elements or capacitive elements in the filter unit, the first antenna radiator 101 and the second antenna radiator 102 can be made to work together in the third frequency band, and the first antenna radiator 101 can be made to work independently in the first frequency band, and the second antenna radiator 102 can be made to work independently in the second frequency band. By setting the parameter values of the filters, inductive elements or capacitive elements in the filter unit, the SAR signal can also be made to pass through, and the currents of the signals in the first frequency band and the second frequency band cannot pass through, so that the area of the capacitive plate of the SAR detection can be increased, and the detection distance of the SAR detection can be improved. Moreover, the antenna radiators can be multiplexed through the filter unit 2, so that the antenna module 1 can cover more frequency bands in the same space.

[0060] In addition, the first antenna radiator 101 and the second antenna radiator 102 can also be two antenna radiators that are different in distance from the heat generating device in the electronic device. In this way, when one of the antenna radiators is close to the heat generating device, and the other antenna radiator is far away from the heat generating device, the two antenna radiators connected in series can be used as the capacitive plate of the SAR sensor, so that the influence of temperature rise on the SAR sensor can be reduced.

[0061] Optionally, the antenna feed point when the first antenna radiator 101 and the second antenna radiator 102 work together can reuse the feed point when the first antenna radiator 101 works independently, or reuse the feed point when the second antenna radiator 102 works independently, or the like, or a separate feed point can also be provided, so as to make full use of the space of the electronic device.

[0062] Optionally, in the case that the first antenna radiator 101 and the second antenna radiator 102 are arranged on different sides of the electronic device, or the first antenna radiator 101 and the second antenna radiator 102 are different in distance from the heat generating device in the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101 and the second antenna radiator 102 respectively. In this way, for the antenna unit having multiple antenna radiators, the detection of the approaching distance of the user on multiple sides of the electronic device can be realized while the antenna performance is ensured, or the temperature compensation can be realized, so as to improve the accuracy of the SAR detection.

[0063] As a further implementation manner, the filter unit 2 blocks the signal of the third frequency band from passing through; as Figure 6 As shown in the figure, the antenna module 1 comprises:

[0064] The fourth antenna unit 14 comprises the first antenna radiator 101, the second antenna radiator 102 and a fifth feed 140, the fifth feed 140 is connected with the first antenna radiator 101, and the second antenna radiator 102 is grounded; the fourth antenna unit 14 works in the radiation mode of the third frequency band through the first antenna radiator 101 and the second antenna radiator 102.

[0065] Optionally, the filter unit 2 comprises at least one of a capacitor element, an inductor element and a filter. Specifically, the parameter value of the capacitor element, the inductor element or the filter can be determined according to the third frequency band and the SAR signal.

[0066] Optionally, in the case that the first antenna radiator 101 and the second antenna radiator 102 are arranged on the same side of the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101.

[0067] For example, the fourth antenna unit 14 is fed through the first antenna radiator 101, and the second antenna radiator 102 is grounded after coupling energy from the first antenna radiator 101 through a gap. The filter unit 2 is connected in series between the first antenna radiator 101 and the second antenna radiator 102, the current of the antenna signal of the fourth antenna unit 14 cannot pass through, while the current of the SAR signal can pass through, so as not to affect the coupling of the second antenna radiator 102 from the first antenna radiator 101, and the SAR detection sensing area is increased.

[0068] Compared with the traditional scheme, the hotspot of the fourth antenna unit 14 may be in the case of the coupling branch of the antenna, and if the SAR detection sensing area is only the first antenna radiator 101, the hotspot cannot be covered. In the scheme of the present application, the first antenna radiator 101 and the second antenna radiator 102 are connected in series through the filter unit 2, and since the filter unit 2 blocks the signal of the third frequency band from passing through, the hotspot of the coupling branch can be covered, the problem of mobile monitoring when the hotspot is not in the main radiator of the antenna can be solved, and the SAR detection sensing area can be increased.

[0069] Optionally, in the case that the first antenna radiator 101 and the second antenna radiator 102 are arranged at different sides of the electronic device, or the first antenna radiator 101 and the second antenna radiator 102 are different distances from a heat generating device in the electronic device, the SAR processing unit 3 is connected with the first antenna radiator 101 and the second antenna radiator 102 respectively. In this way, for an antenna unit with multiple antenna radiators coupled, the detection of the user's close distance to the multiple sides of the electronic device, or the temperature compensation can be implemented while the antenna performance is ensured, so as to improve the accuracy of SAR detection, etc.

[0070] Each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0071] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to cover all the preferred embodiments and all the changes and modifications falling within the scope of the embodiments of the present application.

[0072] Finally, it should be noted that in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0073] The above is the preferred embodiment of the present application. It should be noted that for ordinary people in the technical field, several improvements and refinements can be made without departing from the principles described in the present application, and these improvements and refinements are also within the scope of protection of the present application.

Claims

1. An electronic device, characterized in that, include: An antenna module includes a first antenna radiator and a second antenna radiator; wherein the antenna module has a radiation mode operating in a first frequency band through the first antenna radiator, a radiation mode operating in a second frequency band through the second antenna radiator, and a radiation mode operating in a third frequency band through the first antenna radiator and the second antenna radiator. A filtering unit is provided, wherein the first antenna radiator is connected in series with the second antenna radiator through the filtering unit; A specific absorptivity SAR processing unit is provided, wherein the SAR processing unit is connected to the first antenna radiator, and the filtering unit supports the passage of SAR signals and signals of the third frequency band, and the filtering unit blocks the passage of signals of the first frequency band and the second frequency band; or, the SAR processing unit is connected to both the first antenna radiator and the second antenna radiator, and the filtering unit blocks the passage of SAR signals, signals of the first frequency band and the second frequency band, and the filtering unit supports the passage of signals of the third frequency band. The first and second frequency bands belong to the mid-to-high frequency bands, while the third frequency band belongs to the low frequency band.

2. The electronic device according to claim 1, characterized in that, The antenna module includes: The first antenna element includes a first antenna radiator and a first feed source, wherein the first feed source is connected to the first antenna radiator; the first antenna element operates in the radiation mode of the first frequency band through the first antenna radiator. The second antenna element includes a second antenna radiator and a second feed source; the second feed source is connected to the second antenna radiator, and the second antenna element operates in the radiation mode of the second frequency band through the second antenna radiator.

3. The electronic device according to claim 1, characterized in that, The first and second frequency bands are 1710MHz~2690MHz, and the third frequency band is 700MHz~960MHz.

4. The electronic device according to claim 1, characterized in that, The antenna module includes: The fourth antenna element includes the first antenna radiator, the second antenna radiator, and the fifth feed source. The fifth feed source is connected to the first antenna radiator, and the second antenna radiator is grounded. The fourth antenna unit operates in the radiation mode of the third frequency band through the first antenna radiator and the second antenna radiator.

5. The electronic device according to any one of claims 1 to 4, characterized in that, The filtering unit includes at least one of a capacitor, an inductor, and a filter.

6. The electronic device according to any one of claims 1 to 4, characterized in that, When the first antenna radiator and the second antenna radiator are located on the same side of the electronic device, the SAR processing unit is connected to the first antenna radiator.

7. The electronic device according to claim 6, characterized in that, The first antenna radiator and the second antenna radiator are at different distances from the heating device in the electronic device.

8. The electronic device according to any one of claims 1 to 4, characterized in that, When the first antenna radiator and the second antenna radiator are located on different sides of the electronic device, or when the first antenna radiator and the second antenna radiator are at different distances from the heating device in the electronic device, the SAR processing unit is connected to the first antenna radiator and the second antenna radiator respectively.

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