CN114924134A

CN114924134A - SAR detection device and electronic equipment

Info

Publication number: CN114924134A
Application number: CN202210605377.4A
Authority: CN
Inventors: 吴小浦
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-19
Anticipated expiration: 2042-05-30
Also published as: WO2023231403A1; CN114924134B

Abstract

The application discloses an SAR detection device and electronic equipment, wherein the SAR detection device is an SAR detection scheme of a common antenna radiator, and the stacking space is saved; the two antenna radiators of the SAR detection device are arranged diagonally, thereby realizing BODY-SAR-6 surface detection, and being capable of sensing a main BODY to be detected approaching from the front, the back, the left side, the right side, the upper side and the lower side of the electronic equipment; moreover, the two-antenna radiator is arranged in the SAR hot spot area, so that the SAR detection device provided by the embodiment of the application better realizes SAR hot spot full coverage, and the accuracy of SAR detection is greatly improved.

Description

SAR detection device and electronic equipment

Technical Field

The present disclosure relates to communication technologies, and particularly to an SAR detection apparatus and an electronic device.

Background

With the rapid development of information technology, electronic devices such as mobile phones and the like having communication functions have higher popularity and higher functions. An antenna module is generally included in an electronic device to implement a communication function of the electronic device. People are enjoying various convenience brought by various electronic devices and paying more attention to the influence of electromagnetic radiation of the electronic devices on human health.

When the wireless communication function works and sends signals, electromagnetic waves radiated by the antenna can enter the skin, muscle tissues and brain parts of a human body close to the antenna, and various organs of the human body are lossy media, so that the electromagnetic field in the human body can generate current, the electromagnetic energy is absorbed and dissipated, and harmful effects can be caused on the organs of the human body. Specific Absorption Rate (SAR) is commonly used in biological dosimetry to characterize this physical process.

How to better control the electronic device to meet the SAR detection requirement when being used by a user so as to enable the SAR value to be within a safe range is a technical problem which needs to be solved urgently.

Disclosure of Invention

The application provides a SAR detection device and electronic equipment, can satisfy SAR detection demand better, guarantees the security that the user used electronic equipment to the maximize, promotes user experience.

The embodiment of the application provides a specific absorption rate SAR detection device, is applied to electronic equipment, includes: the SAR sensor, and a first antenna radiator and a second antenna radiator which are diagonally arranged on the electronic equipment; wherein the content of the first and second substances,

the first antenna radiator is arranged in a first SAR hot spot area in a suspending mode, and the first SAR hot spot area at least partially covers two adjacent side edges of the electronic equipment; the first antenna radiator is used for receiving and transmitting a first electromagnetic wave signal, inducing the degree of the body to be detected approaching the first SAR hot spot area and generating a first induction signal;

the second antenna radiator is arranged in a second SAR hot spot area in a suspension mode, and the second SAR hot spot area at least partially covers the other two adjacent side edges of the electronic device; the second antenna radiator is used for receiving and transmitting a second electromagnetic wave signal, sensing the degree of the body to be detected approaching the second SAR hot spot region and generating a second sensing signal;

the SAR sensor is electrically connected with the first antenna radiating body and the second antenna radiating body and is used for acquiring at least one of the first induction signal and the second induction signal so as to determine whether the body to be detected is close to the electronic equipment.

The SAR detection device provided by the embodiment of the application is an SAR detection scheme of a common antenna radiator, so that the stacking space is saved; the two antenna radiators of the SAR detection device are arranged diagonally, thereby realizing BODY-SAR-6 surface detection, and being capable of sensing a main BODY to be detected approaching from the front, the back, the left side, the right side, the upper side and the lower side of the electronic equipment; moreover, the two-antenna radiator is arranged in the SAR hot spot area, so that the SAR detection device provided by the embodiment of the application better realizes SAR hot spot full coverage, and the accuracy of SAR detection is greatly improved.

An embodiment of the present application further provides an electronic device, including the SAR detection apparatus according to any one of the embodiments of the present application.

The electronic equipment that this application embodiment provided, through set up the SAR detection device that this application any embodiment provided at electronic equipment, not only utilize less quantity of antenna module to realize that the main part of treating to detect on a large scale is close to the detection, realized treating the all-round detection that the main part detected and is close, improved electronic equipment to the response precision of treating the main part of detecting, but also improved the function integration level of antenna module, still promoted electronic equipment's complete machine miniaturization when improving electronic equipment's communication quality, improved electronic equipment's intelligent characteristic.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.

FIG. 1 is a schematic diagram of the distribution of electric field lines when a target object is not in proximity to an antenna assembly;

FIG. 2 is a schematic diagram of the distribution of electric field lines when a target object is near an antenna assembly;

fig. 3 is a schematic structural diagram of a first embodiment of an SAR detection apparatus according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a second embodiment of an SAR detection device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a third embodiment of an SAR detection apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fourth embodiment of an SAR detection apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a fifth embodiment of an SAR detection apparatus in an embodiment of the present application;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 9 is an exploded view of the electronic device provided in FIG. 8;

fig. 10 is a schematic structural diagram of a first embodiment of an electronic device in an embodiment of the present application;

fig. 11 is a schematic structural diagram illustrating a component of an embodiment of a first antenna unit of an electronic device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of an embodiment of a second antenna unit of an electronic device in an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

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

It is to be understood that the terms "first", "second", and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

SAR is the electromagnetic power absorbed or consumed by a unit mass of human tissue, and electronic devices are typically configured with SAR sensors for detecting the capacitance value of the environmental capacitance. The SAR sensor needs to use a suspended metal body (also called a sensing piece) to sense a capacitance change Cuser caused by the approach of a human body. The approach distance of the human body is judged through the capacitance change value, so that the aim of reducing the transmitting power can be realized when the mobile phone detects that the human body approaches, and the SAR value is reduced. Fig. 1 is a schematic diagram of distribution of electric field lines when the target object is not close to the antenna assembly, fig. 2 is a schematic diagram of distribution of electric field lines when the target object is close to the antenna assembly, and in combination with fig. 1 and fig. 2, the suspended conductive plate enables the SAR sensor to detect a change in capacitance value caused when the target object is close to the antenna assembly 100. In fig. 2, the target object is taken as an example of a finger of a user, and it is understood that in other embodiments, the target object may be, but is not limited to, other parts on the user, such as a head. The capacitance Csensor in fig. 1 is Cenv, and the capacitance Csensor in fig. 2 is Cenv + Cuser. Where CEnv is the original capacitance value and Cuser is the change in capacitance when the target object is close to the antenna assembly 100. In this way, the object of the antenna assembly 100 to detect whether the target object is close to the antenna assembly 100 is achieved.

In order to control the SAR value, the SAR detection circuit is arranged in the electronic equipment, the SAR detection circuit is connected to the antenna radiator, the antenna radiator is used as an induction sheet of the SAR detection circuit to detect the proximity degree of a human body and the electronic equipment, and when the proximity degree is lower than a certain threshold value, the control system reduces the transmission power of wireless communication, so that the SAR value of the electronic equipment is controlled to be in a safe range when the electronic equipment is used by a user.

The industry SAR testing standards broadly include: BODY-SAR-6 plane SAR detection, head SAR detection, north america and europe also require hot spot SAR detection, the hot spot of SAR is generally near the antenna. The BODY-SAR-6 surface SAR detection requires that SAR values are tested on the upper surface, the lower surface, the left surface, the right surface, the front surface and the rear surface of the electronic equipment. For the SAR hotspot, the inventor of the present application finds, through research, that, taking an electronic device as an example of a mobile phone, the SAR values of a general low frequency (LB, Lower Band) Band and a Wi-Fi Band are relatively low, while the SAR values of a 4G/5G medium-High frequency (MHB) Band and an Ultra High frequency (UHB) Band are relatively High, so that the vicinity of the MHB/UHB-TX can be regarded as a SAR hotspot region. In order to better meet the SAR detection requirement, the SAR detection device provided by the embodiment of the application can realize BODY-SAR-6 surface detection and can comprehensively cover SAR hot spot areas.

Fig. 3 is a schematic diagram of a composition structure of a first embodiment of a SAR detection apparatus in the embodiment of the present application, which is applied to an electronic device 1000, as shown in fig. 3, the SAR detection apparatus in the embodiment of the present application may include: a SAR sensor 150, and a first antenna radiator 110 and a second antenna radiator 120 diagonally disposed on the electronic device 1000; wherein the content of the first and second substances,

the first antenna radiator 110 is arranged in a first SAR hot spot region in a suspending manner, and the first SAR hot spot region at least partially covers two adjacent side edges of the electronic device; the first antenna radiator 110 is used for receiving and transmitting a first electromagnetic wave signal, sensing the degree of the body to be detected approaching the first SAR hot spot region and generating a first sensing signal;

the second antenna radiator 120 is arranged in a second SAR hot spot region in a floating manner, and the second SAR hot spot region at least partially covers the other two adjacent side edges of the electronic device; the second antenna radiator 120 is configured to receive and transmit a second electromagnetic wave signal, sense a degree of the body to be detected approaching the second SAR hot spot region, and generate a second sensing signal;

the SAR sensor 150 is electrically connected to the first antenna radiator 110 and the second antenna radiator 120, and the SAR sensor 150 is configured to obtain at least one of the first induction signal and the second induction signal to determine whether the body to be detected is close to the electronic device.

The SAR detection device provided by the embodiment of the application is an SAR detection scheme of a common antenna radiator, so that the stacking space is saved; the two antenna radiators of the SAR detection device are arranged diagonally, thereby realizing BODY-SAR-6 surface detection, and being capable of sensing a main BODY to be detected approaching from the front, the back, the left side, the right side, the upper side and the lower side of the electronic equipment; moreover, the two-antenna radiator is arranged in the SAR hot spot area, so that the SAR detection device provided by the embodiment of the application better realizes the SAR hot spot full coverage, and the accuracy of SAR detection is greatly improved.

In an exemplary embodiment, the SAR sensor 150 may comprise a multi-channel SAR sensor, as shown in fig. 3, the SAR sensor 150 comprises at least two channels, one of which is connected to the first antenna radiator 110 and the other of which is connected to the second antenna radiator 120. The SAR sensor 150 may also include a plurality of individual SAR sensors, as shown in fig. 3, the SAR sensor 150 may also include two SAR sensors, where one SAR sensor 150 is connected to the first antenna radiator 110 and the other SAR sensor 150 is connected to the second antenna radiator 120.

In an exemplary example, the first and

second antenna radiators

110 and 120, as antenna radiating elements, are further provided with circuit structures such as a matching circuit and a feed to form an antenna system. As shown in fig. 4, the SAR detection apparatus according to the embodiment of the present application may further include a first feed S10, a first matching circuit M1, a second feed S20, and a second matching circuit M2, where the first feed S10 is electrically connected to the first antenna radiator 110 through the first matching circuit M1, and the second feed S20 is electrically connected to the second antenna radiator 120 through the second matching circuit M2.

In one embodiment, the first feed S10, the first matching circuit M1, and the first antenna radiator 110 may constitute an antenna system, and the second feed S20, the second matching circuit M2, and the second antenna radiator 120 may constitute an antenna system. The two antenna systems can operate simultaneously independently of each other.

In an exemplary example, the SAR detection device according to the embodiment of the present application may further include an antenna tuning circuit (not shown in fig. 4), for example, the SAR detection device may include a first tuning circuit T1 and a second tuning circuit T2, the first antenna radiator 110 is grounded through the first tuning circuit T1, and the second antenna radiator 120 is grounded through the second tuning circuit T2.

In an exemplary example, as shown in fig. 5, the SAR detection apparatus in the embodiment of the present application may further include: a third antenna radiator 130, the third antenna radiator 130 being disposed in a floating manner on a side opposite to the first antenna radiator 110 and located on the same side of the electronic device 1000 as the second antenna radiator 120, the third antenna radiator 130 being configured to receive and transmit a third electromagnetic wave signal, sense a proximity of the subject to be detected, and generate a third sensing signal;

the SAR sensor 150 is also electrically connected to the third antenna radiator 130, the SAR sensor 150 being configured to: at least one of the first sensing signal, the second sensing signal and the third sensing signal is acquired to determine whether the body to be detected is close to the electronic device.

Through the SAR detection device shown in fig. 5, an SAR detection area is added, the SAR detection area has a working frequency band where SAR exceeds standard, and an antenna radiator is added in the SAR detection area and used as an induction sheet for SAR detection in common, so that the SAR detection area is covered more comprehensively, the accuracy of SAR detection is further improved, and meanwhile, the stacking space is also saved.

In an exemplary example, as shown in fig. 6, the SAR detection apparatus in the embodiment of the present application may further include: a fourth antenna radiator 140 disposed in the second SAR hotspot region, wherein the fourth antenna radiator 140 is disposed in a floating manner on a side opposite to the second antenna radiator 120, and is located on the same side of the electronic device 1000 as the first antenna radiator 110, and the fourth antenna radiator 140 is configured to receive and transmit a fourth electromagnetic wave signal, sense a proximity of the body to be detected, and generate a fourth sensing signal;

the SAR sensor 150 is also electrically connected to the fourth antenna radiator 140, the SAR sensor 150 being configured to: at least one of the first induction signal, the second induction signal, the third induction signal and the fourth induction signal is obtained to determine whether the body to be detected is close to the electronic device.

Through the SAR detection device shown in fig. 6, the SAR detection area is further increased, and an antenna radiator is added in the SAR detection area and used as an induction sheet for SAR detection in common, so that the SAR detection area is more comprehensively covered, the accuracy of SAR detection is further improved, and meanwhile, the stacking space is also saved.

In an exemplary example, the SAR detection apparatus shown in fig. 6 not only achieves full coverage of SAR hot spots, but also identifies whether the electronic device is held by one hand or both hands by SAR sensing at four corners of the electronic device 1000. In one embodiment, for example: and determining that the fourth antenna radiator 140 of the body to be detected is close to the electronic device according to the obtained fourth sensing signal, so that the user can basically determine that the electronic device is held by one hand at the moment. And the following steps: determining that the third antenna radiator 130 of the body to be detected is close to the electronic device according to the obtained second sensing signal, and determining that the fourth antenna radiator 140 of the body to be detected is close to the electronic device according to the obtained fourth sensing signal, then, it can be basically determined that the user holds the electronic device with both hands at this time. In this way, the electronic device may select another uncovered antenna for receiving and transmitting signals according to the current state of the antenna being held, so as to ensure the user experience of the electronic device 1000.

It can be understood that the third antenna radiator 130 and the fourth antenna radiator 140 are used as antenna radiation units, and circuit structures such as a matching circuit and a feed source are further provided to form an antenna system, and specific implementation may be shown in fig. 4, which is not described herein again. The third antenna radiator 130 and the fourth antenna radiator 140 may also be grounded through the antenna tuning circuit, which is not described herein again.

In an exemplary example, as shown in fig. 7, a SAR detection apparatus provided in an embodiment of the present application may also include: SAR sensor 150, first antenna radiator 110, third antenna radiator 130, and fourth antenna radiator 140; wherein the content of the first and second substances,

the first antenna radiator 110 is arranged in a first SAR hot spot region in a floating manner, and the first SAR hot spot region at least partially covers two adjacent side edges of the electronic device; the first antenna radiator 110 is used for receiving and transmitting a first electromagnetic wave signal, sensing the degree of the body to be detected approaching the first SAR hot spot region, and generating a first sensing signal;

the third antenna radiator 130 is disposed in a floating manner on a side opposite to the first antenna radiator 110, and is located on a different side of the electronic device 1000 from the first antenna radiator 110, the third antenna radiator 130 is configured to receive and transmit a third electromagnetic wave signal, sense a proximity of the subject to be detected, and generate a third sensing signal;

the fourth antenna radiator 140 is arranged in the second SAR hot spot region in a floating manner, and is diagonally arranged with the third antenna radiator 130 on the electronic device 1000, and the fourth antenna radiator 140 is configured to receive and transmit a fourth electromagnetic wave signal, sense a degree of the body to be detected approaching the second SAR hot spot region, and generate a fourth sensing signal;

the SAR sensor 150 is configured to acquire at least one of the first sensing signal, the third sensing signal, and the fourth sensing signal to determine whether the subject to be detected is close to the electronic device.

The SAR detection apparatus shown in fig. 7 is also a SAR detection scheme of a common antenna radiator, which saves the stacking space; two of the three antenna radiators (the third antenna radiator 130 and the fourth antenna radiator 140) in the SAR detection device shown in fig. 7 are diagonally arranged, and the other antenna radiator is used for detecting the SAR supplement region, so that BODY-SAR-6 surface detection is realized, and a BODY to be detected approaching from the front, the back, the left side, the right side, the upper side and the lower side of the electronic device can be sensed; moreover, two antenna radiators (the first antenna radiator 110 and the fourth antenna radiator 140) of the three antenna radiators in the SAR detection device shown in fig. 7 are arranged in the SAR hot spot area, so that the SAR detection device provided by the embodiment of the application better covers the SAR hot spot area, better achieves SAR hot spot full coverage, and greatly improves the accuracy of SAR detection.

Fig. 8 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present disclosure. The electronic device 1000 may be a telephone, a television, a tablet computer, a mobile phone, a camera, a personal computer, a notebook computer, an in-vehicle device, an earphone, a watch, a wearable device, a base station, an in-vehicle radar, a Customer Premise Equipment (CPE), or the like, capable of transceiving electromagnetic wave signals. Taking the electronic device 1000 as a mobile phone as an example, for convenience of description, the electronic device 1000 is defined with reference to a first viewing angle, a width direction of the electronic device 1000 is defined as an X direction, a length direction of the electronic device 1000 is defined as a Y direction, and a thickness direction of the electronic device 1000 is defined as a Z direction. The direction indicated by the arrow is the forward direction.

Fig. 9 is an exploded schematic view of the electronic device provided in fig. 8, and as shown in fig. 9, an electronic device 1000 provided in the embodiment of the present application includes a display screen 300 and a housing 500 covering the display screen 300. The housing 500 includes a middle frame 501 and a rear cover 502 which are fitted to each other. The rear cover 502 is located on a side of the middle frame 501 facing away from the display screen 300. The middle frame 501 includes a middle plate and a frame surrounding the middle plate. The middle plate is used for mounting electronic components such as the main board 200, the battery 400 and the like. The edge, the frame and the back cover 502 of the display screen 300 are connected in sequence. Wherein, the frame and the back cover 502 can be integrally formed. The electronic device 1000 further comprises an antenna assembly 100. At least part of the antenna assembly 100 is provided on the main board 200 of the electronic device 1000 or electrically connected to the main board 200 of the electronic device 1000. The antenna assembly 100 is used for transceiving radio frequency signals to implement a communication function of the electronic device 1000. It should be noted that the installation position of the antenna assembly 100 in fig. 9 is only an illustrative example, and is not used to limit the installation position of the antenna assembly of the present application, and is not used to limit the protection scope of the present application.

The embodiment of the present application further provides an electronic device, which at least may include the SAR detection apparatus provided in any embodiment of the present application. Through setting up SAR detection device at electronic equipment, not only utilize less quantity antenna module to realize waiting to detect the main part and be close the detection on a large scale, realized treating the all-round detection that detects the main part and be close, improved electronic equipment to waiting to detect the response precision of main part, but also improved the function integration level of antenna module, still promoted electronic equipment's complete machine miniaturization when improving electronic equipment's communication quality, improved electronic equipment's intelligent characteristic.

Fig. 10 is a schematic structural diagram of a first embodiment of an electronic device in an embodiment of the present application, and as shown in fig. 10, the electronic device at least includes: a housing 500, and a SAR detection device; wherein, the first and the second end of the pipe are connected with each other,

a housing 500 including a first corner 510 and a second corner 520 diagonally disposed;

the SAR detection device may include: SAR sensor 150, first antenna radiator 110, and second antenna radiator 120; wherein, the first and the second end of the pipe are connected with each other,

the first antenna radiator 110 belongs to a first antenna unit 10 in an antenna assembly 100 of an electronic device, the first antenna radiator 110 is at least partially arranged in a floating manner at or near a first corner 510 located in a first SAR hot spot region, and the first antenna radiator 110 is configured to receive and transmit a first electromagnetic wave signal, sense a degree of a subject to be detected approaching the first SAR hot spot region, and generate a first sensing signal;

the second antenna radiator 120 belongs to a second antenna unit 20 in the antenna assembly 100 of the electronic device, the second antenna radiator 120 is at least partially arranged in a floating manner at or near a second corner portion 520 located in a second SAR hot spot region, and the second antenna radiator 120 is configured to receive and transmit a second electromagnetic wave signal, sense a degree of the body to be detected approaching the second SAR hot spot region, and generate a second sensing signal;

the SAR sensor 150 is electrically connected to the first antenna radiator 110 and the second antenna radiator 120, and the SAR sensor 150 is configured to obtain at least one of the first sensing signal and the second sensing signal to determine whether the subject to be detected is close to the electronic device.

In an illustrative example, as shown in fig. 10, the housing 500 includes a first corner portion 510 and a second corner portion 520 diagonally disposed, and a third corner portion 530 and a fourth corner portion 540 diagonally disposed. In one embodiment, the housing 500 includes a first side 51, a second side 52, a third side 53, and a fourth side 54 connected in series. The first side 51 is disposed opposite the third side 53. The second side 52 is disposed opposite the fourth side 54. The junction between the first side 51 and the second side 52 is a first corner 510. The junction between the third side 53 and the fourth side 54 is a second corner 520. The junction between the first side 51 and the fourth side 54 is a third corner 530. The junction between the second side 52 and the third side 53 is a fourth corner 540.

In one embodiment, the first corner 510, the second corner 520, the third corner 530, and the fourth corner 540 are located on the outer surface of the bezel. Taking fig. 10 as an example, the first corner 510 may be an upper right corner of the housing 500, the second corner 520 may be a lower left corner of the housing 500, the third corner 530 may be an upper left corner of the housing 500, and the fourth corner 540 may be a lower right corner of the housing 500. In other embodiments, the first corner 510 may be a corner covered by the first SAR hot spot region of the housing 500, the second corner 520 may be a corner covered by the second SAR hot spot region of the housing 500, and the first corner 510 and the second corner 520 are diagonally disposed. The fourth corner 540 may be the corner of the housing 500 covered by the second SAR hotspot region.

In an illustrative example, as shown in fig. 10, at least part of the first antenna element 10 is provided at or near the first corner portion 510. The first antenna element 10 includes a first antenna radiator 110. The first antenna radiator 110 is configured to receive and transmit a first electromagnetic wave signal and generate a first sensing signal when the to-be-detected body approaches, where the first sensing signal is used to feed back that the to-be-detected body approaches the first antenna radiator 110. The subject to be detected may include, but is not limited to, a human body, for example. In this embodiment, the subject to be detected is a human body.

In an exemplary example, as shown in fig. 10, the first antenna radiator 110 may be located at a first corner portion 510. In one embodiment, the first antenna radiator 110 may be integrated on the frame and/or the battery cover and disposed at the first corner portion 510 or near the first corner portion 510; alternatively, the first antenna radiator 110 is located in the space surrounded by the housing 500 and located at or near the first corner portion 510, for example, the first antenna radiator 110 is formed on a flexible circuit board and attached to the inner side of the first corner portion 510. In this embodiment, a part of the first antenna radiator element 110 is provided on the first edge 51, and another part is provided on the second edge 52.

In one illustrative example, as shown in fig. 10, at least a portion of second antenna element 20 is disposed at or near second corner portion 520. The second antenna element 20 includes a second antenna radiator 120. The second antenna radiator 120 is configured to receive and transmit a second electromagnetic wave signal and generate a second sensing signal when the to-be-detected body approaches, where the second sensing signal is used to feed back that the to-be-detected body approaches the second antenna radiator 120. The subject to be detected may include, but is not limited to, a human body, for example. In this embodiment, the subject to be detected is a human body.

In an exemplary example, as shown in fig. 10, the second antenna radiator 120 may be located at the second corner 520, and in an embodiment, the second antenna radiator 120 may be integrated on the bezel and/or the battery cover and located at the second corner 520 or near the second corner 520; alternatively, the second antenna radiator 120 is located in the space surrounded by the housing 500 and at or near the second corner portion 520, for example, the second antenna radiator 120 is formed on the flexible circuit board and attached to the inner side of the second corner portion 520. In this embodiment, a portion of the second antenna radiator 120 is disposed on the third side 53, and another portion is disposed on the fourth side 54.

With reference to fig. 8 and 9, the electronic device 1000 includes a front surface, a back surface, a left side surface, a right side surface, an upper side surface and a lower side surface. Wherein, the front face and the back face are arranged in a back-to-back manner. The front surface is the surface where the display screen 300 is located and is also the surface facing the forward direction of the Z axis, the back surface is the surface where the rear cover 502 is located and is also the surface facing the reverse direction of the Z axis, and the left side surface and the right side surface are respectively the surface facing the forward direction of the X axis and the surface facing the reverse direction of the X axis. The upper side surface is a surface facing to the positive direction of the Y axis, and the lower side surface is a surface facing to the negative direction of the Y axis.

When the first antenna radiator 110 is disposed at the first corner portion 510, the first antenna radiator 110 can induce the body to be detected that is close to the front surface, the back surface, the right side surface, and the upper side surface; when the second antenna radiator 120 is disposed at the second corner portion 520, the second antenna radiator 120 can sense the body to be detected approaching from the front, the back, the left side, and the lower side. Therefore, by respectively arranging the first antenna radiator 110 and the second antenna radiator 120 at the first corner portion 510 and the second corner portion 520, the BODY to be detected approaching the electronic device 1000 from the front, the back, the left side, the right side, the upper side and the lower side is sensed, so that the BODY to be detected approaching the electronic device 1000 from the spherical range is sensed in all directions by the antenna assemblies 100 with less arrangement, and the requirement of BODY-SAR-6 surface detection is met. Moreover, the first antenna radiator 110 and the second antenna radiator 120 are arranged in the SAR hot spot area, so that SAR detection covers the SAR hot spot area better, SAR hot spot full coverage is realized better, and the sensing precision of the electronic device 1000 to the body to be detected is greatly improved.

According to the electronic device 1000 provided by the embodiment of the application, the first antenna unit 10 and the second antenna unit 20 are respectively arranged on the two corners of the electronic device 1000, the first antenna unit 10 and the second antenna unit 20 not only transmit and receive electromagnetic wave signals, but also approach detection of a main body to be detected in a large range is realized by a small number of antenna assemblies 100 at the corner parts of the two diagonally arranged corner parts covering the SAR hot spot area, so that the functional integration level of the antenna assemblies 100 is improved, the induction accuracy of the electronic device 1000 on the main body to be detected is improved, the communication quality of the electronic device 1000 is improved, and the overall miniaturization of the electronic device 1000 is also promoted; because the first antenna unit 10 arranged at the first corner portion 510 and the second antenna unit 20 arranged at the second corner portion 520 are combined to cover at least the proximity detection of the body to be detected in 6 surfaces (6 surfaces include upper, lower, left, right, front and back surfaces) of the electronic device 1000, the all-dimensional detection of the proximity of the body to be detected is realized, the intelligent detection efficiency of the electronic device 1000 on the proximity of the body to be detected is improved, the effective judgment of the working state of the electronic device 1000 is realized, the favorable response to the working state of the electronic device 1000 is facilitated, and the intelligent characteristic of the electronic device 1000 is improved.

In one illustrative example, the first antenna element 10 may further include: fifth antenna radiator 1101, sixth antenna radiator 1102. In one embodiment, the fifth antenna radiator 1101, the first antenna radiator 110 and the sixth antenna radiator 1102 are arranged in sequence. In one embodiment, one end of the fifth antenna radiator 1101 is grounded, and the other end of the fifth antenna radiator 1101 is coupled to one end of the first antenna radiator 110; the other end of the first antenna radiator 110 is coupled to one end of the sixth antenna radiator 1102, and the other end of the sixth antenna radiator 1102 is grounded.

In one embodiment, as shown in fig. 10, the first antenna element 10 further includes: a first feed S10, a fifth feed S11, and a sixth feed S12. The first antenna radiator 110 is caused to transceive a first electromagnetic wave signal by the first feed S10, the first electromagnetic wave signal including but not limited to an electromagnetic wave signal of MHB band and/or UHB band. The fifth antenna radiator 1101 receives and transmits a fifth electromagnetic wave signal through the fifth feed S11, where the fifth electromagnetic wave signal includes but is not limited to an electromagnetic wave signal in the MHB frequency band and/or the UHB frequency band. The sixth antenna radiator 1102 is enabled to transmit and receive a sixth electromagnetic wave signal through the sixth feed S11, where the sixth electromagnetic wave signal includes but is not limited to an electromagnetic wave signal in the UHB frequency band.

In one embodiment, not shown in fig. 10, the first antenna element 10 further comprises: a first matching circuit M1, a fifth matching circuit M5, a sixth matching circuit M6. The first feed S10 is electrically connected to the first antenna radiator 110 through the first matching circuit M1, the fifth feed S11 is electrically connected to the fifth antenna radiator 1101 through the fifth matching circuit M5, and the sixth feed S12 is electrically connected to the sixth antenna radiator 1102 through the sixth matching circuit M6.

In an exemplary example, the second antenna unit 20 may further include: a seventh antenna radiator 1201. In one embodiment, the second antenna radiator 120 and the seventh antenna radiator 1201 are sequentially disposed. In one embodiment, one end of the second antenna radiator 120 is floating, and the other end of the second antenna radiator 120 is coupled to one end of the seventh antenna radiator 1201; the other end of the seventh antenna radiator 1201 is grounded.

In one embodiment, as shown in fig. 10, the second antenna unit 10 further includes: a second feed S20, a seventh feed S21. The second antenna radiator 120 is enabled to transceive a second electromagnetic wave signal through the second feed S20, where the second electromagnetic wave signal includes, but is not limited to, an electromagnetic wave signal in LB frequency band. The seventh antenna radiator 1201 transceives a seventh electromagnetic wave signal, including but not limited to an electromagnetic wave signal of an MHB band and/or a UHB band, through the seventh feed S21.

In an embodiment, the antenna unit composition embodiment of the electronic device shown in fig. 10 shows LTE/NR-LB/MHB/UHB-TX conventional distribution, and with the SAR detection apparatus provided in the embodiment of the present application, only two SAR detection inductive patches, that is, the first antenna radiator 110 and the second antenna radiator 120 in fig. 10, need to be respectively disposed at the upper right corner and the lower left corner of the electronic device 1000, and then the detection by the SAR sensor is performed, so that the coverage of all hot spot regions of the SAR higher frequency band is achieved. In this embodiment, the LB frequency band may include, for example, B28/B20/B5/B8/B71, the MHB frequency band may include, for example, B1/B2/B3/B4/B39/B40/B41, and the UHB frequency band may include, for example, N77/N78/N79.

In one embodiment, not shown in fig. 10, the second antenna unit 20 further comprises: a second matching circuit M2, a seventh matching circuit M7. The second feed S20 is electrically connected to the second antenna radiator 120 through the second matching circuit M2, and the seventh feed S21 is electrically connected to the seventh antenna radiator 1201 through the seventh matching circuit M7.

In an exemplary example, in the electronic device 1000 shown in fig. 10, in combination with fig. 5, the SAR detection apparatus in the electronic device 1000 may further include: a third antenna radiator 130, wherein the third antenna radiator 130 is disposed on a side opposite to the first antenna radiator 110 in a floating manner, and is located on the same side of the electronic device 1000 as the second antenna radiator 120, at least a part of the third antenna radiator 130 is disposed on or near the third corner 530 in a floating manner, and the third antenna radiator 130 is configured to receive and transmit a third electromagnetic wave signal, sense a proximity of the body to be detected, and generate a third sensing signal;

In an exemplary example, in the electronic device 1000 shown in fig. 10, in combination with fig. 6, the SAR detection apparatus in the electronic device 1000 may further include: a fourth antenna radiator 140, wherein the fourth antenna radiator 140 is disposed on a side opposite to the second antenna radiator 120 in a floating manner, and is located on the same side of the electronic device 1000 as the first antenna radiator 110, at least a part of the fourth antenna radiator 140 is disposed on or near the fourth corner 540 of the second SAR hot spot region in a floating manner, and the fourth antenna radiator 140 is configured to receive a fourth electromagnetic wave signal, sense a proximity of the body to be detected, and generate a fourth sensing signal;

the SAR sensor 150 is also electrically connected to the fourth antenna radiator 140, the SAR sensor 150 being configured to: at least one of the first sensing signal, the second sensing signal, the third sensing signal and the fourth sensing signal is acquired to determine whether the body to be detected is close to the electronic device.

Fig. 11 is a schematic structural diagram illustrating a composition of an embodiment of a first antenna unit of an electronic device according to an embodiment of the present disclosure, where, as shown in fig. 11, the first antenna unit 10 includes a fifth antenna radiator 1101, a first antenna radiator 110, and a sixth antenna radiator 1102, which are sequentially disposed, one end of the fifth antenna radiator 1101 is grounded, and the other end of the fifth antenna radiator 1101 is coupled to one end of the first antenna radiator 110; the other end of the first antenna radiator 110 is coupled to one end of the sixth antenna radiator 1102, and the other end of the sixth antenna radiator 1102 is grounded.

In the embodiment shown in fig. 11, on one hand, the fifth antenna radiator 1101 in the first antenna unit 10 is connected to the fifth feed S11 through the fifth matching circuit M5, the MHB-TX3& UHB-TX1 signals are fed to the fifth antenna radiator 1101 through the fifth matching circuit M5, the first antenna radiator 110 in the first antenna unit 10 is connected to the first feed S10 through the first matching circuit M1, the MHB-TX2 signals are fed to the first antenna radiator 110 through the first matching circuit M1, the sixth antenna radiator 1102 in the first antenna unit 10 is connected to the sixth feed S12 through the sixth matching circuit M6, and the UHB-TX2 signals are fed to the sixth antenna radiator 1102 through the sixth matching circuit M6. On the other hand, the first antenna radiator 110 goes back to ground through at least one of the capacitor C1, the capacitor C2, and the capacitor C3, serves as a back-to-ground path for MHB-TX3& UHB-TX1 signals and MHB-TX2 signals, and functions to isolate MHB-TX3& UHB-TX1 signals from MHB-TX2 signals (i.e., isolation between the fifth antenna radiator 1101 and the first antenna radiator 110). In one embodiment, the capacitor C2 may be eliminated leaving only the capacitor C1 and the capacitor C2. In one embodiment, the capacitance Cn to ground can be added to further improve isolation. In one embodiment, a dc blocking capacitor C4 (typically having a capacitance of 22pF, and having no effect on the antenna) may be further connected in series between the first matching circuit M1 and the first antenna radiator 110, although if the dc blocking capacitor is provided in the first matching circuit M1, the capacitor C4 does not need to be additionally added. As shown in fig. 11, the first antenna radiator 110 is suspended for the SAR sensor 150. In this embodiment, the SAR sensor 150 may be connected between the capacitor C2 and the first antenna radiator 110 through a first inductor L1 connected in series, and the higher frequency may be isolated by adding a first inductor L1, and in one embodiment, the value of the first inductor L1 may be 82 nH. In one embodiment, the SAR sensor 150 may also be connected between the capacitor C1 or the capacitor C3 or the capacitor C4 and the first antenna radiator 110 through the series connection of the first inductor L1, and may be anywhere on the first antenna radiator 110. Through the structure of the first antenna unit 10 shown in fig. 11, in the first SAR hot spot area where the MHB band and UHB band antennas are concentrated, the detection of the subject to be detected near the SAR hot spot area is realized, so that the SAR detection covers the SAR hot spot well, the accuracy of the SAR detection is greatly improved, and the purpose of intelligently reducing SAR is achieved.

Fig. 12 is a schematic structural diagram illustrating a composition of an embodiment of a second antenna unit of an electronic device according to an embodiment of the present disclosure, and as shown in fig. 12, the second antenna unit 20 includes a second antenna radiator 120 and a seventh antenna radiator 1201 arranged in sequence. In one embodiment, one end of the second antenna radiator 120 is floating, and the other end of the second antenna radiator 120 is coupled to one end of the seventh antenna radiator 1201; the other end of the seventh antenna radiator 1201 is grounded.

In the embodiment shown in fig. 12, on one hand, the second antenna radiator 120 in the second antenna unit 20 is connected to the second feed S20 through the second matching circuit M2, and the LB-TX signal is fed to the second antenna radiator 120 through the second matching circuit M2, the seventh antenna radiator 120 in the second antenna unit 20 is connected to the seventh feed S21 through the seventh matching circuit M7, and the MHB-TX1 signal is fed to the seventh antenna radiator 120 through the seventh matching circuit M7. On the other hand, the second antenna radiator 120 goes back to ground through the tuning circuit T1. In one embodiment, a dc blocking capacitor C5 is connected in series between the second matching circuit M2 and the second antenna radiator 120, and a dc blocking capacitor C6 is connected in series between the tuning circuit T1 and the second antenna radiator 120, and in one embodiment, the capacitance values of the capacitor C5 and the capacitor C6 may be 22pF, which has substantially no effect on the antenna. Of course, if the dc blocking capacitor is provided in the matching second matching circuit M2 and the tuning circuit T1, the capacitor C5 and the capacitor C6 do not need to be additionally added. As shown in fig. 12, the second antenna radiator 120 is suspended for the SAR sensor 150. In this embodiment, the SAR sensor 150 may be connected between the capacitor C6 and the second antenna radiator 120 through the second inductor L2 connected in series, and a higher frequency may be isolated by adding the second inductor L2, and in an embodiment, a value of the second inductor L2 may be 82 nH. In an embodiment, the SAR sensor 150 may also be connected between the capacitor C5 and the second antenna radiator 120 through the series second inductor L2, and may also be at any position of the second antenna radiator 120. Through the structure of the second antenna unit 20 shown in fig. 12, in the second SAR hot spot area where the MHB band antenna is concentrated, the detection that the subject to be detected is close to the SAR hot spot area is realized, so that the SAR detection covers the SAR hot spot well, the accuracy of the SAR detection is greatly improved, and the purpose of intelligently reducing the SAR is achieved.

Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.

Claims

1. A specific absorption rate SAR detection device is characterized by being applied to electronic equipment and comprising: the SAR sensor comprises an SAR sensor, a first antenna radiator and a second antenna radiator, wherein the first antenna radiator and the second antenna radiator are diagonally arranged on the electronic equipment; wherein the content of the first and second substances,

the first antenna radiator is arranged in a first SAR hot spot area in a suspending mode, and the first SAR hot spot area at least partially covers two adjacent side edges of the electronic equipment; the first antenna radiator is used for receiving and transmitting a first electromagnetic wave signal, sensing the degree of the body to be detected approaching the first SAR hot spot area and generating a first sensing signal;

the second antenna radiator is arranged in a second SAR hot spot area in a floating mode, and the second SAR hot spot area at least partially covers the other two adjacent side edges of the electronic equipment; the second antenna radiator is used for receiving and transmitting a second electromagnetic wave signal, sensing the degree of the body to be detected approaching the second SAR hot spot region and generating a second sensing signal;

the SAR sensor is electrically connected with the first antenna radiator and the second antenna radiator and is used for acquiring at least one of the first induction signal and the second induction signal so as to determine whether the body to be detected is close to the electronic device.

2. The SAR detection device of claim 1, further comprising: a third antenna radiator;

the third antenna radiating body is arranged on one side opposite to the first antenna radiating body in a floating mode and is located on the same side of the electronic device as the second antenna radiating body, and the third antenna radiating body is used for receiving and transmitting a third electromagnetic wave signal, sensing the proximity degree of the body to be detected and generating a third sensing signal;

the SAR sensor is also electrically connected with the third antenna radiator; the SAR sensor is used for: acquiring at least one of the first sensing signal, the second sensing signal and the third sensing signal to determine whether a subject to be detected approaches the electronic device.

3. The SAR detection device of claim 2, further comprising: a fourth antenna radiator arranged in the second SAR hot spot area;

the fourth antenna radiator is arranged on one side opposite to the second antenna radiator in a floating manner and is positioned on the same side of the electronic device as the first antenna radiator, and the fourth antenna radiator is used for receiving and transmitting a fourth electromagnetic wave signal, sensing the proximity of the body to be detected and generating a fourth sensing signal;

the SAR sensor is also electrically connected with the fourth antenna radiator, and the SAR sensor is used for: acquiring at least one of the first sensing signal, the second sensing signal, the third sensing signal and the fourth sensing signal to determine whether the body to be detected is close to the electronic device.

4. The SAR detection device of any one of claims 1-3, wherein the SAR sensor is a multi-channel SAR sensor or comprises a plurality of independent SAR sensors.

5. The SAR detection device of any of claims 1-3, wherein the SAR detection device further comprises a first feed, a first matching circuit, a second feed, and a second matching circuit;

the first feed source is electrically connected with the first antenna radiator through the first matching circuit, and the second feed source is electrically connected with the second antenna radiator through the second matching circuit.

6. The SAR detection device of claim 5, further comprising a first tuning circuit and a second tuning circuit;

the first antenna radiator is grounded through the first tuning circuit, and the second antenna radiator is grounded through the second tuning circuit.

7. The SAR detection device according to claim 3, wherein at least one of the third antenna radiator and the fourth antenna radiator is further provided with a matching circuit and a feed.

8. The SAR detection device of claim 7, at least one of the third antenna radiator and the fourth antenna radiator further grounded by an antenna tuning circuit.

9. A SAR detection device, characterized in that, is applied to electronic equipment, includes: the SAR antenna comprises an SAR sensor, a first antenna radiator, a third antenna radiator and a fourth antenna radiator; wherein, the first and the second end of the pipe are connected with each other,

the third antenna radiator is arranged on one side opposite to the first antenna radiator in a floating manner and is positioned on the different side of the electronic equipment from the first antenna radiator, and the third antenna radiator is used for receiving and transmitting a third electromagnetic wave signal, sensing the proximity degree of the body to be detected and generating a third sensing signal;

the fourth antenna radiator is arranged in a second SAR hot spot area in a floating mode, is arranged on the electronic device diagonally with the third antenna radiator, and is used for receiving and transmitting a fourth electromagnetic wave signal, sensing the degree of the body to be detected approaching the second SAR hot spot area and generating a fourth sensing signal;

the SAR sensor is used for acquiring at least one of the first induction signal, the third induction signal and the fourth induction signal so as to determine whether a body to be detected approaches the electronic equipment.

10. An electronic device comprising the SAR detection device according to any one of claims 1 to 9.

11. An electronic device, comprising: a housing and an SAR detection device; wherein the content of the first and second substances,

the shell comprises a first corner part and a second corner part which are arranged diagonally;

the SAR detection device includes: the SAR antenna comprises an SAR sensor, a first antenna radiator and a second antenna radiator; wherein, the first and the second end of the pipe are connected with each other,

the first antenna radiator belongs to a first antenna unit in an antenna assembly of the electronic device, is at least partially arranged in a floating manner at or near the first corner part of a first SAR hot spot area, and is used for receiving and transmitting a first electromagnetic wave signal, sensing the degree of a body to be detected approaching the first SAR hot spot area and generating a first sensing signal;

the second antenna radiator belongs to a second antenna unit in the antenna assembly, is at least partially arranged in a floating manner at or close to the second corner part of the second SAR hot spot region, and is used for receiving and transmitting a second electromagnetic wave signal, sensing the degree of the body to be detected approaching the second SAR hot spot region and generating a second sensing signal;

12. The electronic device defined in claim 11 wherein the housing further comprises: a third corner portion and a fourth corner portion which are diagonally arranged;

the SAR detection device further includes: a third antenna radiator;

the third antenna radiator is arranged on the side opposite to the first antenna radiator in a floating manner and is positioned on the same side of the electronic device as the second antenna radiator, at least part of the third antenna radiator is arranged on or close to the third corner part in a floating manner, and the third antenna radiator is used for receiving and transmitting a third electromagnetic wave signal, sensing the proximity degree of a body to be detected and generating a third sensing signal;

the SAR sensor is also electrically connected with the third antenna radiator; the SAR sensor is used for: acquiring at least one of the first sensing signal, the second sensing signal and the third sensing signal to determine whether the body to be detected is close to the electronic device.

13. The electronic device of claim 12, the SAR detection device further comprising a fourth antenna radiator;

the fourth antenna radiator is arranged on the side opposite to the second antenna radiator in a floating manner and is positioned on the same side of the electronic device as the first antenna radiator, at least part of the fourth antenna radiator is arranged on or close to the fourth corner part positioned in the second SAR hot spot area in a floating manner, and the fourth antenna radiator is used for receiving and transmitting a fourth electromagnetic wave signal, sensing the proximity degree of the body to be detected and generating a fourth sensing signal;

14. The electronic device of any of claims 11-13, the first antenna unit further comprising: a fifth antenna radiator, a sixth antenna radiator;

the fifth antenna radiator, the first antenna radiator and the sixth antenna radiator are arranged in sequence; one end of the fifth antenna radiator is grounded, and the other end of the fifth antenna radiator is coupled with one end of the first antenna radiator; the other end of the first antenna radiator is coupled with one end of the sixth antenna radiator, and the other end of the sixth antenna radiator is grounded.

15. The electronic device of any of claim 14, the first antenna unit further comprising: the first feed source, the fifth feed source and the sixth feed source;

enabling the first antenna radiator to receive and transmit the first electromagnetic wave signal through the first feed source, wherein the first electromagnetic wave signal comprises an electromagnetic wave signal in at least one of a medium-high frequency (MHB) frequency band and an ultrahigh frequency (UHB) frequency band; enabling the fifth antenna radiator to receive and transmit a fifth electromagnetic wave signal through the fifth feed source, wherein the fifth electromagnetic wave signal comprises an electromagnetic wave signal in at least one of an MHB frequency band and an UHB frequency band; and enabling the sixth antenna radiator to receive and transmit a sixth electromagnetic wave signal through the sixth feed source, where the sixth electromagnetic wave signal includes an electromagnetic wave signal in a UHB frequency band.

16. The electronic device of claim 15, the first antenna unit further comprising: a first matching circuit, a fifth matching circuit, a sixth matching circuit;

the first feed source is electrically connected with the first antenna radiator through the first matching circuit, the fifth feed source is electrically connected with the fifth antenna radiator through the fifth matching circuit, and the sixth feed source is electrically connected with the sixth antenna radiator through the sixth matching circuit.

17. The electronic device of claim 16, the first antenna radiator grounded back through at least one of a capacitance C1, a capacitance C2, and a capacitance C3.

18. The electronic device as claimed in claim 17, further comprising a dc blocking capacitor C4 connected in series between the first matching circuit and the first antenna radiator.

19. The electronic device of claim 18, wherein the SAR sensor is connected between the capacitor C1 or the capacitor C3 or the capacitor C4 and the first antenna radiator through a series first inductance L1, or the SAR sensor is connected anywhere on the first antenna radiator through a series first inductance L1.

20. The electronic device of any of claims 11-13, the second antenna unit further comprising: a seventh antenna radiator;

the second antenna radiator and the seventh antenna radiator 1 are arranged in sequence; one end of the second antenna radiator is suspended, and the other end of the second antenna radiator is coupled with one end of the seventh antenna radiator; and the other end of the seventh antenna radiator is grounded.

21. The electronic device of claim 20, the second antenna unit further comprising: a second feed source and a seventh feed source;

enabling the second antenna radiator to receive and transmit a second electromagnetic wave signal through the second feed source, wherein the second electromagnetic wave signal comprises an electromagnetic wave signal in a low-frequency LB frequency band; causing the seventh antenna radiator to transceive a seventh electromagnetic wave signal through the seventh feed, the seventh electromagnetic wave signal including an electromagnetic wave signal of at least one of an MHB band and a UHB band.

22. The electronic device of claim 21, the second antenna unit further comprising: a second matching circuit and a seventh matching circuit;

the second feed source is electrically connected with the second antenna radiator through the second matching circuit, and the seventh feed source is electrically connected with the seventh antenna radiator through the seventh matching circuit.

23. The electronic device of claim 22, wherein the second antenna radiator is grounded back through a tuning circuit.

24. The electronic device of claim 23, further having a dc blocking capacitance C5 in series between the second matching circuit and the second antenna radiator, and a dc blocking capacitance C6 in series between the tuning circuit T1 and the second antenna radiator.

25. The electronic device of claim 24, wherein the SAR sensor is connected between the capacitor C5 and the second antenna radiator through a series second inductance L2, or the SAR sensor is connected anywhere on the second antenna radiator through a series second inductance L2.