CN113328250A - Electronic device - Google Patents
Electronic device Download PDFInfo
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- CN113328250A CN113328250A CN202110585090.5A CN202110585090A CN113328250A CN 113328250 A CN113328250 A CN 113328250A CN 202110585090 A CN202110585090 A CN 202110585090A CN 113328250 A CN113328250 A CN 113328250A
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- metal piece
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- electronic device
- antenna unit
- inductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Support Of Aerials (AREA)
Abstract
The application discloses electronic equipment belongs to terminal equipment technical field. The electronic device includes: an antenna unit and a SAR reduction unit; the antenna unit is arranged on the side edge of the electronic equipment and comprises a feeding point and a grounding point, the grounding point is positioned at one end of the antenna unit, and the feeding point is positioned between the two ends of the antenna unit; the SAR reduction unit is arranged in an insulating mode with the antenna unit and located on the environment side, facing the electronic equipment, of the antenna unit, the SAR reduction unit comprises a first metal piece, a second metal piece and a filter circuit, the first end of the filter circuit is connected with the first metal piece, and the second end of the filter circuit is connected with the second metal piece. The metal piece is divided into two parts, and the filter circuit is added between the two parts, so that the area of the metal piece can be reduced, and the influence on the antenna design is reduced.
Description
Technical Field
The application belongs to the technical field of terminal equipment, and particularly relates to electronic equipment.
Background
With the development and progress of mobile communication systems, the functions of mobile devices are more and more diversified, providing users with much convenience. However, when a human body approaches to the mobile device, because each organ of the human body is a lossy medium, an induced electromagnetic field is generated in the human body under the action of an external electromagnetic field, and current is generated to absorb and dissipate electromagnetic energy. The Specific Absorption Rate (SAR) is an energy Absorption ratio of electromagnetic waves of a mobile phone or a wireless product, and the SAR value generally refers to data measured by the influence of heat energy generated by electromagnetic waves in the mobile phone or the electronic product on a human body.
Mobile devices have specified SAR limits and therefore SAR reduction is required in all kinds of devices. In some examples, a SAR sensor is added on the device, and when a human body approaches the device, the SAR sensor reduces the transmitting power of the device after sensing to reduce the SAR value. However, the detection of the SAR sensor is interrupted by using the change of the coupling capacitance of the suspended metal structure on the equipment and the human body, the area of the suspended metal needs to be large enough to meet the detection requirement of the SAR sensor, and in addition, the SAR sensor is added and the design of a circuit of the SAR sensor is compatible, so the design difficulty of an antenna is increased, and meanwhile, when the SAR sensor works, the transmitting power of the antenna is reduced, and the signal quality of the antenna is greatly influenced.
Disclosure of Invention
The embodiment of the application provides an electronic device, which can solve the problem that when the SAR value of the existing mobile device is reduced, the antenna performance is greatly influenced.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an electronic device is provided, including: an antenna unit and a SAR reduction unit;
the antenna unit is arranged on the side edge of the electronic equipment and comprises a feeding point and a grounding point, the grounding point is positioned at one end of the antenna unit, and the feeding point is positioned between two ends of the antenna unit;
the SAR reducing unit is arranged in an insulating mode with the antenna unit, the SAR reducing unit is located on the environment side of the antenna unit facing the electronic equipment and comprises a first metal piece, a second metal piece and a filter circuit, the first end of the filter circuit is connected with the first metal piece, and the second end of the filter circuit is connected with the second metal piece.
In this application embodiment, this electronic equipment includes antenna element and SAR unit that falls, antenna element sets up in electronic equipment's side, antenna element includes feed point and ground point, the ground point is located antenna element's one end, the feed point is located between antenna element's the both ends, SAR unit and antenna element insulating setting fall, and SAR unit is located antenna element towards electronic equipment's environment side, SAR unit that falls includes first metalwork, second metalwork and filter circuit, filter circuit's one end and first metalwork are connected, filter circuit's second end and second metalwork are connected. This application embodiment divide into two parts with the metalwork to add filter circuit between two parts, can reduce the area of metalwork, reduce the influence to antenna design, because insert filter circuit and can change the induced current distribution phase place on the metalwork, and then can make the antenna walk around the phase place nonconformity of the magnetic field strong point of metalwork radiation's magnetic field strong point and metalwork self response, be distributed in a distributed manner in the human body, no longer concentrate on a position, and then can reach the effect of reducing SAR.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
In the figure, 100-antenna element; 110-a power feed; 120-ground line; 200-a reduced SAR unit; 210-a first metal piece; 220-a second metal piece; 230-a filter circuit; 231-switching unit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
An electronic device provided by the embodiment of the present application is described in detail below with reference to fig. 1 to 5 through specific embodiments and application scenarios thereof.
As shown, the electronic device may include: an antenna unit 100 and a SAR reduction unit 200.
Specifically, the antenna unit 100 is disposed at a side of the electronic device, the antenna unit 100 includes a feeding point and a grounding point, the grounding point is located at one end of the antenna unit 100, and the feeding point is located between two ends of the antenna unit 100; the SAR reduction unit 200 is insulated from the antenna unit 100, and is located on the environment side of the antenna unit 100 facing the electronic device, the SAR reduction unit 200 includes a first metal piece 210, a second metal piece 220, and a filter circuit 230, a first end of the filter circuit 230 is connected with the first metal piece 210, and a second end of the filter circuit 230 is connected with the second metal piece 220.
That is, electromagnetic field energy entering a human body is reduced through the metal piece, the metal piece is divided into two parts, the filter network is added in the middle of the metal piece to change induced current distribution on the metal piece, and then the electromagnetic field energy entering the human body can be dispersed, and the effect of reducing SAR is achieved.
The electronic device may include a main structure of a surface where the antenna is located, such as an antenna bracket, a main board, a middle frame, a battery, a display screen, a camera module, and the like, which are not specifically described in the present application. The feeding point of the antenna unit 100 is connected to a feeding power source 110 in the electronic device, and the ground point is connected to a ground 120 in the electronic device. The environment side of the electronic device refers to a place other than the electronic device.
The Antenna may be implemented by a Laser Direct Structuring (LDS), a comprehensive wiring System (PDS), a Leaky-mode Antenna (LMA), a Flexible Printed Circuit (FPC), or the like.
In this embodiment, the electronic device includes an antenna unit 100 and a SAR reduction unit 200, the antenna unit 100 is disposed at a side of the electronic device, the antenna unit 100 includes a feeding point and a grounding point, the grounding point is located at one end of the antenna unit 100, the feeding point is located between two ends of the antenna unit 100, the SAR reduction unit 200 is disposed in an insulating manner with the antenna unit 100, and the SAR reduction unit is located at an environment side of the antenna unit 100 facing the electronic device, the SAR reduction unit 200 includes a first metal component 210, a second metal component 220, and a filter circuit 230, one end of the filter circuit 230 is connected to the first metal component 210, and a second end of the filter circuit 230 is connected to the second metal component 220. This application embodiment divides into two parts with the metalwork to add filter circuit 230 between two parts, can reduce the area of metalwork, reduce the influence to antenna design, because insert filter circuit 230 and can change the induced current distribution phase place on the metalwork, and then can make the antenna walk around the phase place nonconformity of the magnetic field strong point of metalwork radiation's magnetic field strong point and metalwork self response, be distributed in human being, no longer concentrate on a position, and then can reach the effect of reducing SAR.
In one possible embodiment of the present application, the filter circuit 230 may include: and a first end of the inductor is connected with the first metal part 210, and a second end of the inductor is connected with the second metal part 220.
That is, the distribution phase of the induced current on the metal member can be changed through the inductor, so that the phase of the magnetic field intensity point radiated by the antenna unit 100 by bypassing the metal member is different from the phase of the magnetic field intensity point induced by the metal member, and the magnetic field entering the human body is in a multi-intensity point shape to achieve the effect of reducing the SAR.
Further, by increasing the inductance of the inductor to a sufficiently large value, the first metal element 210 and the second metal element 220 are equivalent to two independent bodies, so as to achieve the SAR reduction effect. By reducing the inductance value of the inductor, when the inductance value reaches a sufficiently small value, the first metal piece 210 and the second metal piece 220 are directly connected to form a whole, and can be used when the electric field strength is small, the SAR value at the moment is low, and SAR reduction can be directly realized through one metal sheet.
In one possible embodiment of the present application, the filter circuit 230 may include: the first end of the capacitor is connected to the first metal element 210, and the second end of the capacitor is connected to the second metal element 220.
That is, the distribution phase of the induced current on the metal element can be changed by the capacitor, so that the phase of the magnetic field intensity point radiated by the antenna unit 100 by bypassing the metal element is different from the phase of the magnetic field intensity point induced by the metal element, and the magnetic field entering the human body is in a multi-intensity point shape to achieve the effect of reducing the SAR.
Further, the capacitance value of the capacitor can be reduced to a sufficiently small value, and the first metal element 210 and the second metal element 220 are equivalent to two independent bodies, so as to achieve the SAR reduction effect. By increasing the capacitance value of the capacitor, when the capacitance value reaches a sufficiently large value, the first metal piece 210 and the second metal piece 220 are connected to the second stage to form a whole, and can be used when the electric field strength is small, the SAR value is low at the moment, and SAR reduction can be realized directly through one metal sheet.
In one possible embodiment of the present application, the filter circuit 230 may include: the capacitor comprises a capacitor and an inductor, wherein a first end of the capacitor and a first end of the inductor are both connected with the first metal piece 210, and a second end of the capacitor and a second end of the inductor are both connected with the second metal piece 220.
That is, the distribution phase of the induced current on the metal piece can be changed by connecting the capacitor and the inductor in parallel, so that the phase of the magnetic field intensity point radiated by the antenna unit 100 by bypassing the metal piece is different from the phase of the magnetic field intensity point induced by the metal piece, and the magnetic field entering the human body is in a multi-intensity point shape to achieve the effect of reducing the SAR.
In one possible embodiment of the present application, the filter circuit 230 may include: the first end of the inductor is connected with the first metal part 210, the second end of the inductor is connected with the first end of the capacitor, and the second end of the capacitor is connected with the second metal part 220.
That is, the distribution phase of the induced current on the metal piece can be changed by connecting the capacitance and the inductance in series, so that the phase of the magnetic field intensity point radiated by the antenna unit 100 by bypassing the metal piece is different from the phase of the magnetic field intensity point induced by the metal piece, and the magnetic field entering the human body is in a multi-intensity point shape to achieve the effect of reducing the SAR.
In one possible embodiment of the present application, the filter circuit 230 may include: a switching unit 231 and at least two filtering units.
Specifically, one end of the switch unit 231 is connected to the first metal component 210, the second ends of the switch unit 231 are respectively connected to the first ends of the at least two filter units, and the second ends of the at least two filter units are both connected to the second metal component 220; any one of the filter units may include one of a capacitor, an inductor, a capacitor and an inductor connected in parallel, and a capacitor and an inductor connected in series.
The filtering unit may be the device described above, or may be another device capable of implementing a filtering function, which is not specifically limited in this embodiment and may be selected according to actual requirements.
Namely, different filtering of different frequency bands can be realized through various different devices, and then SAR reduction requirements of different frequency bands are realized.
The switch unit 231 may be a plurality of single-pole single-throw switches or a single-pole multi-throw switch, the number of the single-pole single-throw switches is the same as that of the filter units, and the number of the single-pole multi-throw switches that can be switched is the same as that of the filter units.
In one possible embodiment of the present application, the switching unit 231 may include: the fixed contact end of the single-pole multi-throw switch is connected with the first metal piece 210, and a plurality of movable contact ends of the single-pole multi-throw switch are respectively connected with at least two filter units.
That is, switching among various filtering units is realized through one single-pole multi-throw switch, the number of the single-pole multi-throw switches which can be switched can be selected according to actual requirements, that is, the number of the filtering units can be selected according to the actual requirements, so that filtering of different frequency bands is realized, and SAR reduction requirements of different frequency bands are realized.
In one possible embodiment of the present application, the switching unit 231 includes: the first ends of the at least two single-pole single-throw switches are connected with the first metal piece 210, and the second ends of the at least two single-pole single-throw switches are respectively connected with the first ends of the at least two filtering units.
That is, the switching among various filter units can be realized through a plurality of single-pole single-throw switches, the number of the filter units can be selected according to actual requirements, and then the number of the single-pole single-throw switches is determined. And filtering of different frequency bands is realized, and SAR reduction requirements of different frequency bands are realized.
In one possible embodiment of the application, the filter unit is adjustable. That is, the capacitance and/or inductance in the filter unit is an adjustable device.
Under the condition that the intensity of the electromagnetic wave transmitted by the antenna unit is greater than a first preset threshold value, increasing the inductance value of the inductor and/or reducing the capacitance value of the capacitor; and reducing the inductance value of the inductor and/or increasing the capacitance value of the capacitor under the condition that the intensity of the electromagnetic wave transmitted by the antenna unit is less than a second preset threshold value.
Specifically, the above embodiments have been described in detail, and details are not repeated in this embodiment.
In one possible embodiment of the present application, the SAR unit 200 is located within a preset area of the feeding point of the antenna unit 100 towards the environment side of the electronic device.
That is, the metal member is disposed corresponding to the antenna current strong point region, that is, the metal member is disposed corresponding to the feeding point of the antenna unit 100, so as to better perform SAR.
Further, the first metal piece 210 and the second metal piece 220 are respectively located at two sides of the feeding point.
The phase of the magnetic field intensity point radiated by the antenna unit 100 by bypassing the metal piece is different from the phase of the magnetic field intensity point induced by the metal piece, so that the magnetic field entering the human body is in a multi-intensity point shape to achieve the effect of reducing the SAR.
The electronic device in the application can be a mobile phone, a tablet personal computer and other devices, and is not specifically described in detail in the application, so that the actual situation is the standard.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An electronic device, comprising: an antenna unit and a SAR reduction unit;
the antenna unit is arranged on the side edge of the electronic equipment and comprises a feeding point and a grounding point, the grounding point is positioned at one end of the antenna unit, and the feeding point is positioned between two ends of the antenna unit;
the SAR reducing unit is arranged in an insulating mode with the antenna unit, the SAR reducing unit is located on the environment side of the antenna unit facing the electronic equipment, the SAR reducing unit comprises a first metal piece, a second metal piece and a filter circuit, the first end of the filter circuit is connected with the first metal piece, and the second end of the filter circuit is connected with the second metal piece.
2. The electronic device of claim 1, wherein the filtering circuit comprises: a capacitor or an inductor.
3. The electronic device of claim 1, wherein the filtering circuit comprises: the first end of the capacitor and the first end of the inductor are both connected with the first metal piece, and the second end of the capacitor and the second end of the inductor are both connected with the second metal piece.
4. The electronic device of claim 1, wherein the filtering circuit comprises: the first end of the inductor is connected with the first metal piece, the second end of the inductor is connected with the first end of the capacitor, and the second end of the capacitor is connected with the second metal piece.
5. The electronic device of claim 1, wherein the filtering circuit comprises: a switching unit and at least two filtering units;
one end of the switch unit is connected with the first metal piece, the second end of the switch unit is respectively connected with the first ends of the at least two filtering units, and the second ends of the at least two filtering units are both connected with the second metal piece;
any one of the filtering units is one of a capacitor, an inductor, a capacitor and an inductor which are connected in parallel, and a capacitor and an inductor which are connected in series.
6. The electronic device of claim 5, wherein the filtering unit is adjustable;
increasing the inductance value of the inductor and/or reducing the capacitance value of the capacitor under the condition that the intensity of the electromagnetic wave transmitted by the antenna unit is greater than a first preset threshold value;
and when the intensity of the electromagnetic wave transmitted by the antenna unit is smaller than a second preset threshold value, reducing the inductance value of the inductor and/or increasing the capacitance value of the capacitor.
7. The electronic device according to claim 5, wherein the switch unit includes: and the fixed contact end of the single-pole multi-throw switch is connected with the first metal piece, and a plurality of movable contact ends of the single-pole multi-throw switch are respectively connected with at least two filtering units.
8. The electronic device according to claim 5, wherein the switch unit includes: the first ends of the at least two single-pole single-throw switches are connected with the first metal piece, and the second ends of the at least two single-pole single-throw switches are respectively connected with the first ends of the at least two filtering units.
9. The electronic device of claim 1, wherein the SAR-reducing unit is located within a preset area of a feeding point of the antenna unit toward an environment side of the electronic device.
10. The electronic device of claim 9, wherein the first metal piece and the second metal piece are located on two sides of the feed point, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585090.5A CN113328250B (en) | 2021-05-27 | 2021-05-27 | Electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585090.5A CN113328250B (en) | 2021-05-27 | 2021-05-27 | Electronic equipment |
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| CN113328250A true CN113328250A (en) | 2021-08-31 |
| CN113328250B CN113328250B (en) | 2023-04-25 |
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| CN202110585090.5A Active CN113328250B (en) | 2021-05-27 | 2021-05-27 | Electronic equipment |
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| US20170195465A1 (en) * | 2016-01-06 | 2017-07-06 | Le Holdings (Beijing) Co., Ltd. | Antenna efficiency boosting device and mobile terminal |
| WO2017117947A1 (en) * | 2016-01-06 | 2017-07-13 | 乐视控股（北京）有限公司 | Device for increasing antenna efficiency, and mobile terminal |
| CN211088501U (en) * | 2019-11-08 | 2020-07-24 | RealMe重庆移动通信有限公司 | Antenna assembly and electronic equipment |
| CN112467371A (en) * | 2020-11-23 | 2021-03-09 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100283691A1 (en) * | 2009-05-07 | 2010-11-11 | Ethertronics, Inc. | Spatial filter for near field modification in a wireless communication device |
| CN102098070A (en) * | 2011-02-17 | 2011-06-15 | 上海安费诺永亿通讯电子有限公司 | Communication terminal capable of effectively reducing HAC/SAR of antenna |
| CN102769170A (en) * | 2012-07-24 | 2012-11-07 | 上海安费诺永亿通讯电子有限公司 | Wideband low-specific absorption rate (SAR) wireless terminal antenna system |
| US20170195465A1 (en) * | 2016-01-06 | 2017-07-06 | Le Holdings (Beijing) Co., Ltd. | Antenna efficiency boosting device and mobile terminal |
| WO2017117947A1 (en) * | 2016-01-06 | 2017-07-13 | 乐视控股（北京）有限公司 | Device for increasing antenna efficiency, and mobile terminal |
| CN211088501U (en) * | 2019-11-08 | 2020-07-24 | RealMe重庆移动通信有限公司 | Antenna assembly and electronic equipment |
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|---|---|
| CN113328250B (en) | 2023-04-25 |
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