CN113328250B - Electronic equipment - Google Patents
Electronic equipment Download PDFInfo
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- CN113328250B CN113328250B CN202110585090.5A CN202110585090A CN113328250B CN 113328250 B CN113328250 B CN 113328250B CN 202110585090 A CN202110585090 A CN 202110585090A CN 113328250 B CN113328250 B CN 113328250B
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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 Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (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 feed point and a grounding point, wherein the grounding point is positioned at one end of the antenna unit, and the feed point is positioned between two ends of the antenna unit; the SAR lowering 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, and comprises a first metal piece, a second metal piece and a filter circuit, wherein 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 the mobile communication system, the functions of the mobile device are more and more diversified, and a lot of convenience is provided for users. However, when a human body approaches the mobile device, because each organ of the human body is a consumable medium, an induced electromagnetic field is generated in the human body under the action of an external electromagnetic field, and a current is generated to absorb and dissipate electromagnetic energy. The electromagnetic wave absorption ratio (Specific Absorption Rate, SAR) is the electromagnetic wave energy absorption ratio of a mobile phone or a wireless product, and the SAR value generally refers to the measurement data of the influence of the heat energy generated by the electromagnetic wave in the mobile phone or the electronic product on the human body.
The mobile device has a prescribed SAR limit, and thus SAR reduction processing is required in various devices. In some examples, a SAR sensor is added to the device, and when a human body approaches the device, the SAR sensor senses and reduces the device transmit power to achieve a reduction in SAR value. However, the detection of the SAR sensor is interrupted by utilizing a suspended metal structure on the device and the change of coupling capacitance of a human body, the area of the suspended metal is large enough to meet the detection requirement of the SAR sensor, and the design of a circuit of the SAR sensor is compatible with the SAR sensor, so that 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 electronic equipment, which can solve the problem that the antenna performance is greatly influenced when the SAR value is reduced by the existing mobile equipment.
In order to solve the technical problems, the application is realized 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 feed point and a grounding point, wherein the grounding point is positioned at one end of the antenna unit, and the feed point is positioned between two ends of the antenna unit;
the SAR lowering unit is arranged in an insulating mode with the antenna unit, the SAR lowering unit is located on the side, facing the electronic equipment, of the antenna unit, the SAR lowering 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.
In this embodiment of the application, this electronic equipment includes antenna element and falls SAR unit, 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, fall SAR unit and the insulating setting of antenna element, and fall SAR unit and be located antenna element towards electronic equipment's environment side, fall SAR unit and include first metalwork, second metalwork and filter circuit, filter circuit's one end is connected with first metalwork, filter circuit's second end is connected with the second metalwork. According to the embodiment of the application, the metal piece is divided into two parts, the filter circuit is added between the two parts, the area of the metal piece can be reduced, the influence on the antenna design is reduced, and the induced current distribution phase on the metal piece can be changed due to the fact that the filter circuit is connected, so that the antenna bypasses the magnetic field strong points radiated by the metal piece and the phase of the magnetic field strong points induced by the metal piece are inconsistent, the antenna is distributed in a distributed mode in a human body, the antenna is not concentrated at one part, and the SAR reducing effect can be achieved.
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 embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic structural diagram of an electronic device according to one embodiment of the present application;
FIG. 2 is a schematic structural diagram of an electronic device according to one 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 elements; 110-a power supply; 120-ground wire; a 200-step-down SAR unit; 210-a first metal piece; 220-a second metal piece; 230-a filter circuit; 231-switching unit.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of 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 terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. 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.
An electronic device provided in the embodiments 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, where 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 disposed in an insulating manner with the antenna unit 100, and is located on an environment side of the antenna unit 100 facing the electronic device, where the SAR reduction unit 200 includes a first metal member 210, a second metal member 220, and a filter circuit 230, a first end of the filter circuit 230 is connected to the first metal member 210, and a second end of the filter circuit 230 is connected to the second metal member 220.
That is, the electromagnetic field energy entering the human body is reduced through the metal piece, the metal piece is divided into two parts, the filter network is added in the middle to change the induction current distribution on the metal piece, and then the electromagnetic field energy entering the human body can be dispersed, so that the SAR reducing effect is achieved.
The electronic device may include a main structure of a surface where the antenna such as an antenna bracket, a main board, a middle frame, etc., and a battery, a display screen, a camera module, etc., which are not specifically described in the present application. The feeding point of the antenna unit 100 is connected to a feeding power supply 110 in the electronic device, and the ground point is connected to a ground line 120 in the electronic device. The environment side of the electronic device refers to a place other than the electronic device.
Implementation techniques for antennas may include laser direct structuring (Laser Direct Structuring, LDS), integrated wiring systems (Premises Distribution System, PDS), leaky-mode antennas (LMA), flexible circuit boards (Flexible Printed Circuit, FPC), and the like.
In this embodiment of the application, the electronic device includes an antenna unit 100 and a SAR lowering unit 200, the antenna unit 100 is disposed on 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 lowering unit 200 is disposed in an insulating manner with the antenna unit 100, and the SAR lowering unit is located on an environment side of the antenna unit 100 facing the electronic device, the SAR lowering unit 200 includes a first metal piece 210, a second metal piece 220 and a filter circuit 230, one end of the filter circuit 230 is connected with the first metal piece 210, and the second end of the filter circuit 230 is connected with the second metal piece 220. According to the embodiment of the application, the metal piece is divided into two parts, the filter circuit 230 is added between the two parts, the area of the metal piece can be reduced, the influence on the antenna design is reduced, and the induced current distribution phase on the metal piece can be changed due to the fact that the filter circuit 230 is connected, so that the antenna can bypass the magnetic field strong points radiated by the metal piece and the phase of the magnetic field strong points induced by the metal piece are inconsistent, distributed in a distributed mode in a human body, and the antenna is not concentrated at one part any more, so that the SAR reducing effect can be achieved.
In one possible embodiment of the present application, the filtering circuit 230 may include: the first end of the inductor is connected to the first metal piece 210, and the second end of the inductor is connected to the second metal piece 220.
That is, the distribution phase of the induced current on the metal piece can be changed through the inductance, so that the magnetic field strong point radiated by the antenna unit 100 by the metal piece is inconsistent with the magnetic field strong point phase induced by the metal piece, and the magnetic field entering the human body is in a plurality of strong points to achieve the SAR reducing effect.
Further, the inductance of the inductor may be increased to a sufficiently large value, so that the first metal member 210 and the second metal member 220 are equivalent to two independent units, thereby achieving 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 equivalent to being directly connected to form a whole, so that the inductor can be used when the electric field intensity is smaller, the SAR value is lower, and the SAR can be reduced directly through one metal sheet.
In one possible embodiment of the present application, the filtering circuit 230 may include: the first end of the capacitor is connected to the first metal piece 210, and the second end of the capacitor is connected to the second metal piece 220.
That is, the distribution phase of the induced current on the metal piece can be changed through the capacitor, so that the phase of the strong magnetic field point radiated by the antenna unit 100 by the metal piece is inconsistent with the phase of the strong magnetic field point induced by the metal piece, and the magnetic field entering the human body is in a plurality of strong points to achieve the SAR reducing effect.
Further, the SAR reduction effect can be achieved by reducing the capacitance of the capacitor to a sufficiently small value, such that the first metal member 210 and the second metal member 220 are equivalent to two independent units. When the capacitance value of the capacitor is increased to a sufficiently large value, the first metal piece 210 and the second metal piece 220 are connected to the second stage, so that the capacitor becomes a whole, the capacitor can be used when the electric field intensity is smaller, the SAR value is lower, and the SAR can be reduced directly through one metal sheet.
In one possible embodiment of the present application, the filtering circuit 230 may include: the first end of the capacitor and the first end of the inductor are connected to the first metal piece 210, and the second end of the capacitor and the second end of the inductor are connected to the second metal piece 220.
That is, the distribution phase of the induced current on the metal piece can be changed through the parallel connection of the capacitance and inductance, so that the phase of the strong magnetic field point radiated by the antenna unit 100 by the metal piece is inconsistent with the phase of the strong magnetic field point induced by the metal piece, and the magnetic field entering the human body is in a multi-strong point shape to achieve the SAR reducing effect.
In one possible embodiment of the present application, the filtering circuit 230 may include: a capacitor and an inductor, a first end of the inductor is connected to the first metal member 210, a second end of the inductor is connected to the first end of the capacitor, and a second end of the capacitor is connected to the second metal member 220.
That is, the distribution phase of the induced current on the metal piece can be changed through the series connection of the capacitance and the inductance, so that the phase of the strong magnetic field point radiated by the antenna unit 100 by the metal piece is inconsistent with the phase of the strong magnetic field point induced by the metal piece, and the magnetic field entering the human body is in a multi-strong point shape to achieve the SAR reducing effect.
In one possible embodiment of the present application, the filtering 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 member 210, and the second ends of the switch unit 231 are respectively connected to the first ends of at least two filter units, and the second ends of the at least two filter units are connected to the second metal member 220; any one of the filter units may comprise one of a capacitor, an inductor, a parallel capacitor, an inductor, a series capacitor, and an inductor.
The filtering unit may be any device as described above, or may be any other device capable of implementing a filtering function, which is not specifically limited in the embodiment of the present application, and may be selected according to actual needs.
That is, different filtering in different frequency bands can be realized by a plurality of different devices, so that SAR (specific absorption Rate) requirements in different frequency bands are further realized.
The switch unit 231 may be a plurality of single-pole single-throw switches or one single-pole multi-throw switch, and 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 can be switched to be 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 the plurality of movable contact ends of the single-pole multi-throw switch are respectively connected with at least two filtering units.
That is, the number of the single-pole multi-throw switches which can be switched can be selected according to actual requirements by switching among various filtering units through one single-pole multi-throw switch, that is, the number of the filtering units can be selected according to actual requirements, so that filtering of different frequency bands can be realized, and SAR (specific absorption rate) reducing requirements of different frequency bands can be 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 filter units.
That is, the switching among various filtering units can be realized through a plurality of single-pole single-throw switches, and the number of the filtering units can be selected according to actual requirements, so that 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 a possible embodiment of the present application, the filter unit is adjustable. I.e. the capacitance and/or inductance in the filter unit is a tunable device.
Under the condition that the intensity of electromagnetic waves emitted by the antenna unit is larger than a first preset threshold value, increasing the inductance value of the inductor and/or reducing the capacitance value of the capacitor; and when the intensity of the electromagnetic wave emitted 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.
Specifically, the foregoing embodiments have been described in detail, and will not be described in detail in this embodiment.
In one possible embodiment of the present application, the SAR reduction 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, to perform SAR better.
Further, the first metal piece 210 and the second metal piece 220 are respectively located at two sides of the feeding point.
The antenna unit 100 can make the phase of the magnetic field strong point radiated by the metal piece inconsistent with the phase of the magnetic field strong point induced by the metal piece, so that the magnetic field entering the human body is in a plurality of strong points to achieve the SAR reducing effect.
The electronic device in the application may be a mobile phone, a tablet personal computer and other devices, and specifically, the application will not be described in detail, and the actual situation is assumed.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (8)
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 feed point and a grounding point, wherein the grounding point is positioned at one end of the antenna unit, and the feed point is positioned between two ends of the antenna unit;
the SAR reduction unit is arranged in an insulating manner with the antenna unit, is positioned on the environment side, facing the electronic equipment, of the antenna unit, and comprises a first metal piece, a second metal piece and a filter circuit, wherein 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 SAR reduction unit is positioned in a preset area range of the feed point of the antenna unit towards the environment side of the electronic equipment;
the first metal piece and the second metal piece are respectively positioned at two sides of the feeding point;
the environment side of the electronic device refers to a place other than the electronic device.
2. The electronic device of claim 1, wherein the filter circuit comprises: capacitance or inductance.
3. The electronic device of claim 1, wherein the filter circuit comprises: the first end of the capacitor and the first end of the inductor are connected with the first metal piece, and the second end of the capacitor and the second end of the inductor are connected with the second metal piece.
4. The electronic device of claim 1, wherein the filter 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 filter circuit comprises: a switch unit and at least two filter units;
one end of the switch unit is connected with the first metal piece, the second ends of the switch units are respectively connected with the first ends of at least two filter units, and the second ends of at least two filter units are connected with the second metal piece;
any one of the filter units is one of a capacitor, an inductor, a parallel capacitor, an inductor, a series capacitor and an inductor.
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 emitted by the antenna unit is greater than a first preset threshold value;
and under the condition that the intensity of the electromagnetic wave emitted 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 of claim 5, wherein the switching unit comprises: the fixed contact end of the single-pole multi-throw switch is connected with the first metal piece, and the 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 of claim 5, wherein the switching unit comprises: 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 filter units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110585090.5A CN113328250B (en) | 2021-05-27 | 2021-05-27 | Electronic equipment |
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| CN202110585090.5A CN113328250B (en) | 2021-05-27 | 2021-05-27 | Electronic equipment |
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| CN113328250A CN113328250A (en) | 2021-08-31 |
| CN113328250B true 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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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8421685B2 (en) * | 2009-05-07 | 2013-04-16 | 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 |
| US20170195465A1 (en) * | 2016-01-06 | 2017-07-06 | Le Holdings (Beijing) Co., Ltd. | Antenna efficiency boosting device 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 |
| CN112467371B (en) * | 2020-11-23 | 2023-10-03 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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