CN112968275B - Electronic equipment - Google Patents
Electronic equipment Download PDFInfo
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- CN112968275B CN112968275B CN202110151124.XA CN202110151124A CN112968275B CN 112968275 B CN112968275 B CN 112968275B CN 202110151124 A CN202110151124 A CN 202110151124A CN 112968275 B CN112968275 B CN 112968275B
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- radiation unit
- detection circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The application provides electronic equipment, which comprises an antenna radiator, a specific absorption rate SAR detection circuit and a change-over switch, wherein the antenna radiator comprises a first radiation unit and a second radiation unit which are arranged at intervals; the SAR detection circuit is respectively and electrically connected with the first radiation unit and the second radiation unit through a change-over switch, and the change-over switch is used for controlling the connection state of the SAR detection circuit and the first radiation unit and the second radiation unit; when the first radiation unit is connected with the SAR detection circuit, detecting distance information between a human body and electronic equipment through the first radiation unit; when the second radiation unit is connected with the SAR detection circuit, the distance information between the human body and the electronic equipment is detected through the second radiation unit. Thus, the first radiation unit and the second radiation unit can share the same SAR detection circuit, so that the occupied volume of the SAR detection circuit can be reduced, and the cost of the electronic equipment is reduced.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an electronic device.
Background
When the wireless communication function works and emits signals, electromagnetic waves radiated by the antenna can enter human skin, muscle tissues and brain parts close to the antenna, and various organs of the human body are consumable mediums, so that the electromagnetic fields in the human body can generate current, and the electromagnetic energy can be absorbed and dissipated, so that harmful effects can be caused on the organs of the human body. Specific absorption rate (Specific Absorption Rate, SAR) is commonly used in biopharmaceuticals to characterize this physical process.
In the related art, generally, an SAR detection circuit is disposed in an electronic device, the SAR detection circuit is connected to an antenna radiator, the antenna radiator is used as an induction piece of the SAR detection circuit to detect the proximity degree between a human body and the electronic device, and when the proximity degree is lower than a certain threshold value, the system can be controlled to reduce the transmitting power of wireless communication, so that the SAR value of the electronic device is controlled to be in a safe range when the electronic device is used by a user. The number of the antenna radiating units is large at present, so that the space occupied by the SAR detection circuit is large, and the cost is high.
Disclosure of Invention
The embodiment of the application provides electronic equipment, which solves the problems that the space occupied by the SAR detection circuit is large and the cost is high due to the fact that the number of the set SAR detection circuits is large.
The embodiment of the application provides an electronic device, which comprises an antenna radiator, a specific absorption rate SAR detection circuit and a change-over switch, wherein,
the antenna radiator comprises a first radiating unit and a second radiating unit, and the first radiating unit and the second radiating unit are arranged at intervals;
the SAR detection circuit is respectively and electrically connected with the first radiation unit and the second radiation unit through the change-over switch, and the change-over switch is used for controlling the connection state of the SAR detection circuit and the first radiation unit and the second radiation unit;
detecting distance information between a human body and electronic equipment through the first radiation unit when the first radiation unit is connected with the SAR detection circuit; and when the second radiation unit is connected with the SAR detection circuit, detecting the distance information between the human body and the electronic equipment through the second radiation unit.
In the embodiment of the application, the electronic device comprises an antenna radiator, a specific absorption rate SAR detection circuit and a change-over switch, wherein the antenna radiator comprises a first radiation unit and a second radiation unit which are arranged at intervals; the SAR detection circuit is respectively and electrically connected with the first radiation unit and the second radiation unit through the change-over switch, and the change-over switch is used for controlling the connection state of the SAR detection circuit and the first radiation unit and the second radiation unit; detecting distance information between a human body and electronic equipment through the first radiation unit when the first radiation unit is connected with the SAR detection circuit; and when the second radiation unit is connected with the SAR detection circuit, detecting the distance information between the human body and the electronic equipment through the second radiation unit. Thus, the first radiation unit and the second radiation unit can share the same SAR detection circuit, so that the occupied volume of the SAR detection circuit can be reduced, and the cost of the electronic equipment is reduced.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
fig. 1 is a block diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The features of the terms "first", "second", and the like in the description and in the claims of this application may be used for descriptive or implicit inclusion of one or more such features. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present application provides an electronic device including an antenna radiator 10, a specific absorption rate SAR detection circuit 20, and a switch 30, wherein,
the antenna radiator 10 comprises a first radiation unit 101 and a second radiation unit 102, wherein the first radiation unit 101 and the second radiation unit 102 are arranged at intervals;
the SAR detection circuit 20 is electrically connected to the first radiation unit 101 and the second radiation unit 102 through the switch 30, and the switch 30 is used for controlling the connection state of the SAR detection circuit 20 and the first radiation unit 101 and the second radiation unit 102;
detecting distance information between a human body and an electronic device through the first radiation unit 101 when the first radiation unit 101 is connected to the SAR detection circuit 20; and when the second radiation unit is connected with the SAR detection circuit, detecting the distance information between the human body and the electronic equipment through the second radiation unit.
In this embodiment of the present application, the positions where the first radiation unit 101 and the second radiation unit 102 are disposed may be set according to actual needs, for example, in some embodiments, the first radiation unit 101 and the second radiation unit 102 are located on two adjacent sides of the electronic device, where the first radiation unit 101 and the second radiation unit 102 are located on two adjacent sides of the electronic device may be understood that the first radiation unit 101 is located on one side of the electronic device, the second radiation unit 102 is located on the other side of the electronic device, and the two sides are located adjacently; it is also understood that the first radiating element 101 is located at one side of the electronic device and the second radiating element 102 is located at the side and at the side adjacent to the side. As shown in fig. 1, in the embodiment of the present application, the first radiating unit 101 is located at the top of the electronic device, and the second radiating unit 102 is located at the top of the electronic device, and the other part is located at the side of the electronic device.
Alternatively, the above-mentioned switch 30 may implement various connection states between the SAR detection circuit 20 and the first and second radiation units 101 and 102, for example, the switch 30 may control the SAR detection circuit 20 to be disconnected from both the first and second radiation units 101 and 102, may control the SAR detection circuit 20 to be electrically connected to either the first or second radiation units 101 or 102, and may control the SAR detection circuit 20 to be electrically connected to both the first and second radiation units 101 and 102. The structure of the change-over switch 30 may be set according to actual needs as long as the above-described switch control function can be realized. For example, in some embodiments, the diverter switch 30 may be a single pole double throw switch.
In the embodiment of the application, the electronic device comprises an antenna radiator 10, a specific absorption rate SAR detection circuit 20 and a change-over switch 30, wherein the antenna radiator 10 comprises a first radiation unit 101 and a second radiation unit 102, and the first radiation unit 101 and the second radiation unit 102 are arranged at intervals; the SAR detection circuit 20 is electrically connected to the first radiation unit 101 and the second radiation unit 102 through the switch 30, and the switch 30 is used for controlling the connection state of the SAR detection circuit 20 and the first radiation unit 101 and the second radiation unit 102; detecting distance information between a human body and an electronic device through the first radiation unit 101 when the first radiation unit 101 is connected to the SAR detection circuit 20; when the second radiation unit 102 is connected to the SAR detection circuit 20, distance information between the human body and the electronic device is detected by the second radiation unit 102. In this way, the first radiation unit 101 and the second radiation unit 102 can share the same SAR detection circuit 20, so that the volume occupied by the SAR detection circuit 20 can be reduced, and the cost of the electronic device can be reduced.
It should be understood that, as the antenna radiating elements, the first radiating element 101 and the second radiating element 102 should also be provided with circuit structures such as a matching circuit and a feed source to form an antenna system. That is, in the embodiment of the present application, the electronic device further includes a modem 40, a first antenna feed 50, a first antenna matching circuit 60, a second antenna feed 70, and a second antenna matching circuit 80, where the modem 40 is electrically connected to the first antenna feed 50 and the second antenna feed 70, respectively, the first antenna feed 50 is electrically connected to the first radiating element 101 through the first antenna matching circuit 60, and the second antenna feed 70 is electrically connected to the second radiating element 102 through the second antenna matching circuit 80.
The first antenna feed 50, the first antenna matching circuit 60, and the first radiating element 101 may constitute an antenna system, and the second antenna feed 70, the second antenna matching circuit 80, and the second radiating element 102 may constitute an antenna system. The two antenna systems may operate simultaneously independently of each other. The above-mentioned SAR detection circuit 20 may be configured as a SAR detection circuit system by the switch 30 and the first radiation unit 101, and the SAR detection circuit 20 may be configured as a SAR detection system by the switch 30 and the second radiation unit 102. The two SAR detection systems can operate simultaneously independently of each other.
It should be noted that, in some embodiments, the antenna system may further include other structures, for example, the antenna system may further include an antenna tuning switch. In other words, in some embodiments, the electronic device further comprises a first antenna tuning switch 901 and a second antenna tuning switch 902, the first antenna tuning switch 901 being electrically connected to the first radiating element 101, the second antenna tuning switch 902 being electrically connected to the second radiating element 102. Of course, in other embodiments, the first radiating element 101 may be grounded in other ways, and the second radiating element 102 may be grounded in other ways.
Alternatively, the switching state of the switch 30 may be controlled by some control chips, and in order to reduce the cost, in this embodiment, the modem 40 may be used to perform switching control on the switching state of the switch 30. That is, in the embodiment of the present application, the modem 40 is electrically connected to the switch 30, and the modem 40 is configured to control the on/off state of the switch 30 according to the operating states of the first antenna feed 50 and the second antenna feed 70.
It should be understood that in the embodiment of the present application, the switch 30 may be controlled to be in different states according to whether the first antenna feed 50 and the second antenna feed 70 are working, so as to ensure that the SAR value is in a safe range when the electronic device is used by a user.
For example, in some embodiments, the modem 40 is configured to control the switch 30 to be in the first state when the modem 40 only controls the first antenna feed 50 to be in the active state; when the modem 40 only controls the second antenna feed 70 to be in a working state, the modem 40 is configured to control the switch 30 to be in a second state;
wherein, the switch 30 is in a first state, and the SAR detection circuit 20 is electrically connected with the first radiation unit 101 through the switch 30; in the second state of the switch 30, the SAR detection circuit 20 is electrically connected to the second radiating element 102 via the switch 30.
In this embodiment of the present application, assuming that the modem 40 controls the first antenna feed 50 to operate in the first frequency band, when the second antenna feed 70 does not operate, the first radiating unit 101 may also operate in the first frequency band after the first antenna matching circuit 60 and the first antenna tuning switch 901 act, and at this time, the first radiating unit 101 may be used as a strain gauge of the SAR detection circuit to detect the proximity degree between the human body and the first radiating unit 101, and when the proximity degree is lower than a certain threshold, prompt and control to reduce the transmitting power of the electronic device.
Assuming that the modem 40 controls the second antenna feed 70 to operate in the first frequency band, when the first antenna feed 50 does not operate, the second radiating unit 102 may also operate in the first frequency band after the second antenna matching circuit 80 and the second antenna tuning switch 902 act, at this time, the second radiating unit 102 may serve as a strain gauge of the SAR detection circuit, detect the proximity degree between the human body and the second radiating unit 102, and prompt and control to reduce the emission power of the electronic device when the proximity degree is lower than a certain threshold value.
It should be appreciated that the communication frequency range of the electronic device is typically between 100KHz and 300GHz, and the frequency range defined in the SAR evaluation procedure is typically between 30MHz and 6GHz, so that when the communication frequency of the electronic device is greater than 30MHz, the SAR detection circuit may be turned on to perform detection, and when the communication frequency of the electronic device is less than or equal to 30MHz, the SAR detection circuit may be turned off, thereby reducing power consumption.
Optionally, in a case where the operating frequency band of the first antenna feed 50 is greater than 30MHz, the modem 40 is configured to control the switch 30 to be in the first state; in the case that the operating frequency band of the second antenna feed 70 is greater than 30MHz, the modem 40 is configured to control the switch 30 to be in the second state.
In this embodiment, in the case that the working frequency band of the first antenna feed 50 is less than or equal to 30MHz, the modem 40 is configured to control the SAR detection circuit 20 to disconnect from the first radiating element 101; in the case that the operating frequency band of the second antenna feed 70 is less than or equal to 30MHz, the modem 40 is configured to control the SAR detection circuit 20 to be disconnected from the second radiating element 102, so that the influence of the SAR detection circuit 20 on the antenna radiator can be avoided when no human detection is required, alternatively, in some embodiments, in the case that the operating frequency band of the first antenna feed 50 is less than or equal to 30MHz, the modem 40 may directly control the switch 30 to be in an off state, where the SAR detection circuit 20 is disconnected from both the first radiating element 101 and the second radiating element 102.
It should be noted that, in some embodiments, as shown in fig. 1, when the first radiating element 101 is located on a first side of the electronic device, the second radiating element 102 is located on the first side, and the second radiating element is located on a second side adjacent to the first side, the modem 40 is configured to control the switch 30 to be in the second state when the first antenna feed 50 is in the active state. At this time, the second radiation unit 102 is used as a strain gauge of the SAR detection circuit 20, so that the human body distance can be detected in the radiation direction of the first radiation unit 101, so as to ensure that the SAR value is in a safe range when the electronic device is used by a user, and at the same time, the SAR detection circuit 20 can avoid the influence on the antenna radiation performance of the first radiation unit 101.
In some embodiments, when the modem 40 controls the first antenna feed 50 and the second antenna feed 70 to operate simultaneously, the modem 40 is configured to control the switch 30 to be in a third state;
in the third state of the switch 30, the SAR detection circuit 20 is electrically connected alternately with the first radiation unit 101 and the second radiation unit 102 through the switch 30, or the SAR detection circuit 20 is electrically connected simultaneously with the first radiation unit 101 and the second radiation unit 102 through the switch 30.
In this embodiment, the SAR detection circuit 20 is alternately electrically connected to the first radiation unit 101 and the second radiation unit 102 through the switch 30, which is understood that the modem 40 cyclically controls the switch 30 to switch between the first state and the second state.
Optionally, in some embodiments, the modem is configured to control the switch to be in the third state in a case where at least one of the operating frequency band of the first antenna feed 50 and the operating frequency band of the second antenna feed 70 is greater than 30 MHz.
In the embodiment of the present application, when only one antenna feed source has a working frequency band greater than 30MHz, both the first radiation unit 101 and the second radiation unit 102 are used as strain gauges of the SAR detection circuit 20, and when the first radiation unit 101 and the second radiation unit 102 are located on the same plane, the sensing area can be increased, the sensing distance can be increased, and then the detection range and sensitivity of the SAR detection circuit 20 can be effectively improved; when the first radiation unit 101 and the second radiation unit 102 are not on the same plane, the detection direction of the SAR detection circuit 20 can be improved, which is helpful for meeting the requirements of multiple-plane SAR index compliance.
It should be noted that the operating frequency bands of the first antenna feed 50 and the second antenna feed 70 may be set according to actual needs, and in some embodiments, the modem 40 is configured to control the first antenna feed 50 and the second antenna feed 70 to operate in different frequency bands.
For example, when the modem 40 controls the first antenna feed 50 to operate in the LTE B7 band, the first radiating element 101 also operates in the LTE B7 band after being operated by the first antenna matching circuit 60 and the first antenna tuning switch 901. Meanwhile, the modem 40 controls the second antenna feed 70 to operate in the WIFI 5G frequency band, and the second radiating unit 102 also operates in the WIFI 5G frequency band after being acted by the second antenna matching circuit 80 and the second antenna tuning switch 902.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An electronic device is characterized by comprising an antenna radiator, a specific absorption rate SAR detection circuit and a change-over switch, wherein,
the antenna radiator comprises a first radiating unit and a second radiating unit, and the first radiating unit and the second radiating unit are arranged at intervals;
the SAR detection circuit is respectively and electrically connected with the first radiation unit and the second radiation unit through the change-over switch;
detecting distance information between a human body and electronic equipment through the first radiation unit when the first radiation unit is connected with the SAR detection circuit; detecting distance information between a human body and electronic equipment through the second radiation unit when the second radiation unit is connected with the SAR detection circuit;
the electronic equipment further comprises a modem, a first antenna feed source, a first antenna matching circuit, a second antenna feed source and a second antenna matching circuit, wherein the modem is respectively and electrically connected with the first antenna feed source and the second antenna feed source, the first antenna feed source is electrically connected with the first radiation unit through the first antenna matching circuit, and the second antenna feed source is electrically connected with the second radiation unit through the second antenna matching circuit;
the modem is electrically connected with the change-over switch and is used for controlling the switch state of the change-over switch according to the working states of the first antenna feed source and the second antenna feed source;
the first radiating element and the second radiating element are located on two adjacent sides of the electronic device.
2. The electronic device of claim 1, wherein the modem is configured to control the switch to be in the first state when the modem is controlling only the first antenna feed to be in the active state; when the modem only controls the second antenna feed source to be in a working state, the modem is used for controlling the change-over switch to be in a second state;
the SAR detection circuit is electrically connected with the first radiation unit through the change-over switch under the first state; and the SAR detection circuit is electrically connected with the second radiation unit through the change-over switch under the second state of the change-over switch.
3. The electronic device of claim 2, wherein the modem is configured to control the switch to be in the first state if the operating frequency band of the first antenna feed is greater than 30 MHz; and the modem is used for controlling the change-over switch to be in the second state under the condition that the working frequency band of the second antenna feed source is larger than 30 MHz.
4. The electronic device of claim 1, wherein the modem is configured to control the switch to be in a third state when the modem controls the first antenna feed and the second antenna feed to operate simultaneously;
and under the third state of the change-over switch, the SAR detection circuit is alternately and electrically connected with the first radiation unit and the second radiation unit through the change-over switch, or is simultaneously and electrically connected with the first radiation unit and the second radiation unit through the change-over switch.
5. The electronic device of claim 4, wherein the modem is configured to control the switch to be in the third state if at least one of the operating frequency band of the first antenna feed and the operating frequency band of the second antenna feed is greater than 30 MHz.
6. The electronic device of claim 1, wherein the modem is configured to control the first antenna feed and the second antenna feed to operate in different frequency bands.
7. The electronic device of claim 1, wherein the change-over switch is a single pole double throw switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110151124.XA CN112968275B (en) | 2021-02-03 | 2021-02-03 | Electronic equipment |
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| CN202110151124.XA CN112968275B (en) | 2021-02-03 | 2021-02-03 | Electronic equipment |
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| CN112968275B true CN112968275B (en) | 2023-05-26 |
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| CN215499825U (en) * | 2021-09-18 | 2022-01-11 | Oppo广东移动通信有限公司 | Electronic device |
| CN114679198B (en) * | 2022-03-09 | 2024-01-30 | 维沃移动通信有限公司 | Antenna power adjustment method and device, electronic equipment and readable storage medium |
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