CN114978217A - Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna - Google Patents
Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna Download PDFInfo
- Publication number
- CN114978217A CN114978217A CN202210396492.5A CN202210396492A CN114978217A CN 114978217 A CN114978217 A CN 114978217A CN 202210396492 A CN202210396492 A CN 202210396492A CN 114978217 A CN114978217 A CN 114978217A
- Authority
- CN
- China
- Prior art keywords
- antenna
- sar
- mobile phone
- power
- close
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000009467 reduction Effects 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
-
- 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
- H01Q1/243—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 with built-in antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method and a system for reducing SAR (synthetic aperture radar) of a mobile phone antenna, wherein the method comprises the following steps: acquiring a capacitance induction value of the SAR sensor and an infrared distance induction value of the distance sensor; carrying out combined judgment on the capacitance induction value and the infrared distance induction value; after the combined judgment meets the power reduction condition, a preset SAR reduction mechanism in the equipment is called; the equipment successfully calls an SAR reduction mechanism, the antenna power is reduced, and SAR reduction is realized; and when the power back-up condition is judged to be met, calling a power back-up mechanism, wherein the power back-up mechanism and the SAR reduction mechanism are opposite in process. According to the method, the SAR sensor and the distance sensor are adopted for joint judgment, so that the judgment accuracy is improved; the power of the antenna is automatically reduced or increased according to preset conditions, so that the communication effect is ensured, and radiation is effectively avoided; and multiple antennas are adopted, so that the power is reduced step by step, and the SAR exceeding is effectively avoided.
Description
Technical Field
The invention relates to the technical field of mobile phone antennas, in particular to a method and a system for reducing SAR of a mobile phone antenna.
Background
The SAR reduction function is that SAR sensor chips are loaded, SAR reduction is triggered by detecting the induced capacitance value between the antenna and an object so as to reduce the conducted power to reduce the SAR value;
the design of an SAR sensor chip at an antenna feed point is commonly used in the current mobile phone design: the method comprises the steps that the SAR sensor chip detects capacitance value change on an antenna body to judge the distance between an object and the antenna, and when the capacitance value exceeds a certain threshold value, the chip calls a power reduction mechanism to reduce conducted power so as to reduce SAR;
because the SAR sensor chip is of a capacitance induction type, the scenes that a human body and other objects approach cannot be distinguished, and the SAR sensor chip is triggered in the scenes that the human body does not approach, the conduction power is reduced, and the phenomenon is particularly prominent in the OTA test of the head hand model;
therefore, the above-described solution has disadvantages and needs for further improvement.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method and a system for reducing SAR of a mobile phone antenna, aiming at solving the triggering condition of the scene and further perfecting the SAR reduction mechanism.
In order to achieve the purpose, the invention adopts the following specific scheme:
the invention provides a method for reducing SAR (synthetic aperture radar) of a mobile phone antenna, which comprises the following steps of:
s1, acquiring a capacitance sensing value of the SAR sensor and an infrared distance sensing value of the distance sensor;
s2, carrying out combined judgment on the capacitance induction value and the infrared distance induction value;
s3, after jointly judging that the power reduction condition is met, calling a preset SAR reduction mechanism in the equipment;
s4, the equipment successfully calls an SAR reduction mechanism, the antenna power is reduced, and SAR reduction is realized;
and S5, when the power back-up condition is judged to be met, calling a power back-up mechanism, wherein the power back-up mechanism and the SAR reduction mechanism are opposite in process.
Further, step S1 includes determining whether the communication scene is present, performing the joint determination if the communication scene is present, and not performing the joint determination if the communication scene is absent.
Further, the SAR reduction mechanism in step S3 specifically includes the following steps:
s31, reducing the power of the first antenna by the power control module;
s32, after the step S31, if the SAR value detected by the RF detection module exceeds the preset value, the short-circuit switch is disconnected to connect the resistor in series to the first antenna circuit;
s33, after the step S32, if the SAR value detected by the RF detection module exceeds the preset value, the antenna switching module closes the antenna I and switches on the antenna II;
s34, after the step S33, if the SAR value detected by the RF detection module exceeds the preset value, the antenna switching module closes the antenna II and switches on the antenna III;
s35, after the step S34, if the SAR value detected by the RF detection module exceeds the preset value, keeping the third antenna and closing the WiFi module;
and as the functional scene of continuously surfing the internet in the conversation process needs to be kept, the WiFi module is turned off as soon as possible.
Further, in step S2, jointly determining whether the conditions for reducing power and invoking the SAR reduction mechanism are satisfied are as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor judges that the mobile phone is close to the head, and when the SAR sensor judges that the mobile phone is far away from the head, the power is reduced;
in a call scene, when the mobile phone is close to the head or the hand, the distance sensor judges that the mobile phone is close to the head or the hand, and when the SAR sensor judges that the mobile phone is close to the head or the hand, the power is reduced;
in a conversation scene, when the mobile phone is placed freely, the distance sensor judges that the mobile phone has no approaching object, the SAR sensor judges that the mobile phone has no approaching object, and the power is maintained;
in a conversation scene, when the mobile phone is hand-held and hand-free, the distance sensor judges that no object is close to the mobile phone, and the SAR sensor judges that an object is close to the mobile phone, the power is maintained.
Further, in step S5, the conditions for determining that the power ramp-back is satisfied and deciding to invoke the power ramp-back mechanism are as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor judges that the mobile phone is close to the head, and when the SAR sensor judges that the mobile phone is far from the head, the power is maintained;
in a call scene, when the mobile phone is close to the head or the hand, the distance sensor judges that the mobile phone is close to the head or the hand, and when the SAR sensor judges that the mobile phone is close to the head or the hand, the power is maintained;
in a call scene, when the mobile phone is placed freely, the distance sensor judges that the mobile phone has no close object, the SAR sensor judges that the mobile phone has no close object, and the power rises again;
in a conversation scene, when the mobile phone is hand-held and hand-free, the distance sensor judges that no object is close to the mobile phone, and the SAR sensor judges that an object is close to the mobile phone, the power rises back, and the communication signal of the mobile phone is strengthened.
The invention also provides a system for reducing SAR of the mobile phone antenna, which comprises: the system comprises a controller, a distance sensor, an SAR sensor, a WiFi module, an RF detection module, a first antenna, a second antenna and a third antenna;
the controller is electrically connected with the distance sensor, the SAR sensor, the WiFi module, the RF detection module, the first antenna, the second antenna and the third antenna respectively;
the controller further includes: the antenna switching device comprises a control chip, an antenna switching shifting block and a power control module;
the control chip is respectively and electrically connected with the distance sensor, the SAR sensor, the WiFi module, the RF detection module and the antenna conversion shifting block, and the antenna conversion shifting block is also respectively and electrically connected with the power control module, the second antenna and the third antenna;
the power control module is also electrically connected with the antenna I.
Furthermore, a resistor is further connected in series between the power controller and the first antenna, the resistor is connected in parallel with a short-circuit switch, the short-circuit switch is electrically connected with the control chip, and the control chip controls the short-circuit switch to be closed and opened;
the short-circuit switch is normally closed so as to enable the resistor to be in a short-circuit state, and if the power of the first antenna needs to be reduced, the short-circuit switch is disconnected so as to enable the resistor to be connected in series to a circuit of the first antenna, so that the power of the first antenna is reduced;
and the power of the first antenna, the second antenna and the third antenna is gradually reduced.
Furthermore, the SAR sensor is respectively and electrically connected with the first antenna, the second antenna and the third antenna through antenna feed points.
Further, the distance sensor and the SAR sensor are installed at positions close to the mobile phone receiver.
By adopting the technical scheme of the invention, the method has the following beneficial effects:
1. the SAR sensor and the distance sensor are adopted for joint judgment, so that the judgment accuracy is improved;
2. the power of the antenna is automatically reduced or increased according to preset conditions, so that the communication effect is ensured, and radiation is effectively avoided;
3. and multiple antennas are adopted, so that the power is reduced step by step, and the SAR exceeding is effectively avoided.
Drawings
FIG. 1 is an overall flow diagram of the present invention;
FIG. 2 is a flow chart of the SAR reduction mechanism of the present invention;
fig. 3 is a functional block diagram of the present invention.
In the figure: 1. a main control chip; 2. a distance sensor; 3. an SAR sensor; 4. a WiFi module; 5. an RF detection module; 6. an antenna switching module; 7. a resistance; 8. a short circuit switch; 9. an antenna I; 10. a second antenna; 11. an antenna III; 12. a power control module; .
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "front", "rear", "left", "right", and the like are used in the orientations and positional relationships shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1, the present invention provides a method for reducing SAR of a mobile phone antenna, comprising the following steps:
s1, acquiring a capacitance induction value of the SAR sensor 3 and an infrared distance induction value of the distance sensor 2;
s2, carrying out combined judgment on the capacitance induction value and the infrared distance induction value;
s3, after jointly judging that the power reduction condition is met, calling a preset SAR reduction mechanism in the equipment;
s4, the equipment successfully calls an SAR reduction mechanism, the antenna power is reduced, and SAR reduction is realized;
and S5, when the power back-up condition is judged to be met, calling a power back-up mechanism, wherein the power back-up mechanism and the SAR reduction mechanism are opposite in process.
Step S1 further includes determining whether the communication scene is present, performing joint determination if the communication scene is present, and not performing joint determination if the communication scene is absent.
As shown in fig. 2, the SAR reduction mechanism in step S3 specifically includes the following steps:
s31, reducing the power of the first antenna 9 through the power control module 12;
s32, after the step S31, if the SAR value detected by the RF detection module 5 exceeds the preset value, the short-circuit switch 8 is disconnected, and the resistor 7 is connected in series to the first antenna 9 circuit;
s33, after step S32, if the SAR value detected by the RF detection module 5 exceeds the preset value, the antenna switching module 6 turns off the first antenna 9 and turns on the second antenna 10;
s34, after step S33, if the SAR value detected by the RF detection module 5 exceeds the preset value, the antenna switching module 6 turns off the antenna two 10 and turns on the antenna three 11;
s35, after the step S34, if the SAR value detected by the RF detection module 5 exceeds the preset value, keeping the antenna III 11, and turning off the WiFi module 4;
as the functional scene of continuing to surf the internet in the conversation process needs to be maintained, the WiFi module 4 is turned off at the end.
In step S2, jointly determining whether the conditions for reducing power and invoking the SAR reduction mechanism are satisfied are as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor 2 judges that the mobile phone is close to the head, and the SAR sensor 3 judges that the power is reduced when the mobile phone is far away from the head;
in a call scene, when the mobile phone approaches the head or the hand, the distance sensor 2 judges that the mobile phone approaches the head or the hand, and the SAR sensor 3 judges that the power is reduced when the mobile phone approaches the head or the hand;
in a call scene, when the mobile phone is placed freely, the distance sensor 2 judges that the mobile phone has no close object, the SAR sensor 3 judges that the mobile phone has no close object, and the power is maintained;
in a call scene, when the mobile phone is a hand-held hands-free phone, the distance sensor 2 judges that no object is close to the mobile phone, and the SAR sensor 3 judges that an object is close to the mobile phone, the power is maintained.
In step S5, the condition for determining that the power ramp-back is satisfied and determining to invoke the power ramp-back mechanism is as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor 2 judges that the mobile phone is close to the head, and the SAR sensor 3 judges that the mobile phone is far away from the head, the power is maintained;
in a call scene, when the mobile phone is close to the head or the hand, the distance sensor 2 judges that the mobile phone is close to the head or the hand, and the SAR sensor 3 judges that the power is maintained when the mobile phone is close to the head or the hand;
in a call scene, when the mobile phone is placed freely, the distance sensor 2 judges that the mobile phone has no approaching object, the SAR sensor 3 judges that the mobile phone has no approaching object, and the power rises again;
in a call scene, when the mobile phone is a hand-held hands-free phone, the distance sensor 2 judges that no object is close to the mobile phone, and the SAR sensor 3 judges that an object is close to the mobile phone, the power rises back, and the communication signal of the mobile phone is enhanced.
As shown in fig. 3, the present invention further provides a system for reducing SAR of a mobile phone antenna, including: the device comprises a controller, a distance sensor 2, an SAR sensor 3, a WiFi module 4, an RF detection module 5, a first antenna 9, a second antenna 10 and a third antenna 11;
the controller is electrically connected with the distance sensor 2, the SAR sensor 3, the WiFi module 4, the RF detection module 5, the first antenna 9, the second antenna 10 and the third antenna 11 respectively;
the controller further includes: a control chip, an antenna conversion shifting block and a power control module 12;
the control chip is respectively and electrically connected with the distance sensor 2, the SAR sensor 3, the WiFi module 4, the RF detection module 5 and the antenna conversion shifting block, and the antenna conversion shifting block is also respectively and electrically connected with the power control module 12, the second antenna 10 and the third antenna 11;
the power control module 12 is also electrically connected with the first antenna 9.
A resistor 7 is further connected in series between the power controller and the antenna I9, the resistor 7 is connected in parallel with a short-circuit switch 8, the short-circuit switch 8 is electrically connected with the control chip, and the control chip controls the short-circuit switch 8 to be closed and opened;
the short-circuit switch 8 is in a closed state in a normal state so as to enable the resistor 7 to be in a short-circuit state, and if the power of the first antenna 9 needs to be reduced, the short-circuit switch 8 is disconnected, the resistor 7 is connected in series to a circuit of the first antenna 9, and the power of the first antenna 9 is reduced;
and the power of the first antenna 9, the second antenna 10 and the third antenna 11 is gradually reduced.
The SAR sensor 3 is electrically connected with the first antenna 9, the second antenna 10 and the third antenna 11 through antenna feed points respectively.
The distance sensor 2 and the SAR sensor 3 are arranged at positions close to a mobile phone receiver.
The SAR reduction mechanism (power reduction mechanism) joint judgment table of the invention comprises the following steps:
the invention relates to a combined judgment table of a back-lifting mechanism:
the principle of the invention is as follows:
through the combined judgment of the SAR sensor 3 and the distance sensor 2, when the judgment meets the preset power reduction condition, the SAR reduction mechanism is started, and when the judgment meets the preset power lifting condition, the power back-up mechanism is started, multiple antennas are adopted, the power is reduced step by including the antenna I9, the antenna II 10 and the antenna III 11, and the SAR is effectively prevented from exceeding the standard.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for reducing SAR of a mobile phone antenna is characterized by comprising the following steps:
s1, acquiring a capacitance sensing value of the SAR sensor and an infrared distance sensing value of the distance sensor;
s2, carrying out combined judgment on the capacitance induction value and the infrared distance induction value;
s3, after jointly judging that the power reduction condition is met, calling a preset SAR reduction mechanism in the equipment;
s4, the equipment successfully calls an SAR reduction mechanism, the antenna power is reduced, and SAR reduction is realized;
and S5, when the power back-up condition is judged to be met, calling a power back-up mechanism, wherein the power back-up mechanism and the SAR reduction mechanism are opposite in process.
2. The method for reducing the SAR of a mobile phone antenna according to claim 1, wherein the step S1 further comprises determining whether the communication scene is in progress, performing the joint determination if the communication scene is in progress, and not performing the joint determination if the communication scene is not in progress.
3. The method for reducing SAR of a mobile phone antenna according to claim 1, wherein the SAR reduction mechanism of step S3 specifically comprises the following steps:
s31, reducing the power of the first antenna through the power control module;
s32, after the step S31, if the SAR value detected by the RF detection module exceeds the preset value, the short-circuit switch is disconnected, and the resistor is connected in series to the circuit of the first antenna;
s33, after the step S32, if the SAR value detected by the RF detection module exceeds the preset value, the antenna switching module closes the antenna I and switches on the antenna II;
s34, after the step S33, if the SAR value detected by the RF detection module exceeds the preset value, the antenna II is closed and the antenna III is switched on through the antenna conversion module;
and S35, after the step S34, if the SAR value detected by the RF detection module exceeds the preset value, keeping the third antenna and turning off the WiFi module.
4. The method for reducing the SAR of the mobile phone antenna according to claim 1, wherein in step S2, the joint judgment on whether the conditions for reducing the power and invoking the SAR reduction mechanism are satisfied is as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor judges that the mobile phone is close to the head, and when the SAR sensor judges that the mobile phone is far away from the head, the power is reduced;
in a call scene, when the mobile phone is close to the head or the hand, the distance sensor judges that the mobile phone is close to the head or the hand, and when the SAR sensor judges that the mobile phone is close to the head or the hand, the power is reduced;
in a call scene, when the mobile phone is placed freely, the distance sensor judges that the mobile phone has no close object, the SAR sensor judges that the mobile phone has no close object, and the power is maintained;
in a conversation scene, when the mobile phone is hand-held and hand-free, the distance sensor judges that no object is close to the mobile phone, and the SAR sensor judges that an object is close to the mobile phone, the power is maintained.
5. The method for reducing the SAR of the mobile phone antenna according to claim 1, wherein in step S5, the condition for judging that the power back-up is satisfied and deciding to invoke the power back-up mechanism is as follows:
in a call scene, when the mobile phone is close to the head, the distance sensor judges that the mobile phone is close to the head, and when the SAR sensor judges that the mobile phone is far from the head, the power is maintained;
in a call scene, when the mobile phone is close to the head or the hand, the distance sensor judges that the mobile phone is close to the head or the hand, and when the SAR sensor judges that the mobile phone is close to the head or the hand, the power is maintained;
in a conversation scene, when the mobile phone is placed freely, the distance sensor judges that the mobile phone has no approaching object, the SAR sensor judges that the mobile phone has no approaching object, and the power rises again;
in a conversation scene, when the mobile phone is hand-held and hand-free, the distance sensor judges that no object is close to the mobile phone, and when the SAR sensor judges that an object is close to the mobile phone, the power rises back, and the communication signal of the mobile phone is strengthened.
6. A system for reducing SAR of a mobile phone antenna is characterized by comprising: the system comprises a controller, a distance sensor, an SAR sensor, a WiFi module, an RF detection module, a first antenna, a second antenna and a third antenna;
the controller is electrically connected with the distance sensor, the SAR sensor, the WiFi module, the RF detection module, the first antenna, the second antenna and the third antenna respectively;
the controller further includes: the antenna switching device comprises a control chip, an antenna switching shifting block and a power control module;
the control chip is respectively and electrically connected with the distance sensor, the SAR sensor, the WiFi module, the RF detection module and the antenna conversion shifting block, and the antenna conversion shifting block is also respectively and electrically connected with the power control module, the second antenna and the third antenna;
the power control module is also electrically connected with the antenna I.
7. The system for reducing the SAR of the mobile phone antenna according to claim 6, wherein a resistor is further connected in series between the power controller and the first antenna, the resistor is connected in parallel with a short-circuit switch, the short-circuit switch is electrically connected with the control chip, and the control chip controls the short-circuit switch to be closed or opened;
the short-circuit switch is normally closed so as to enable the resistor to be in a short-circuit state, and if the power of the first antenna needs to be reduced, the short-circuit switch is disconnected so as to enable the resistor to be connected in series to a circuit of the first antenna, so that the power of the first antenna is reduced;
and the power of the first antenna, the second antenna and the third antenna is gradually reduced.
8. The system for reducing SAR of mobile phone antenna according to claim 6, wherein the SAR sensor is electrically connected to the first antenna, the second antenna and the third antenna through antenna feeding points respectively.
9. The system for reducing SAR of mobile phone antenna as claimed in claim 6, wherein the distance sensor and SAR sensor are installed near the handset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396492.5A CN114978217A (en) | 2022-04-15 | 2022-04-15 | Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396492.5A CN114978217A (en) | 2022-04-15 | 2022-04-15 | Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114978217A true CN114978217A (en) | 2022-08-30 |
Family
ID=82978371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210396492.5A Pending CN114978217A (en) | 2022-04-15 | 2022-04-15 | Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114978217A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090047998A1 (en) * | 2007-08-16 | 2009-02-19 | Motorola, Inc. | Method and apparatus for controlling power transmission levels for a mobile station having transmit diversity |
| CN201910796U (en) * | 2011-01-06 | 2011-07-27 | 纬创资通股份有限公司 | Antenna switching device and mobile communication device with same |
| US20120052820A1 (en) * | 2010-08-31 | 2012-03-01 | Acer Incorporated | Mobile Electronic Device and Data Process System Utilizing the Same |
| CN102761640A (en) * | 2012-07-04 | 2012-10-31 | 中兴通讯股份有限公司 | Method for optimizing indexes of antenna and mobile terminal |
| WO2018058409A1 (en) * | 2016-09-29 | 2018-04-05 | 深圳天珑无线科技有限公司 | Antenna system, terminal, and signal processing method and system |
| CN109474740A (en) * | 2018-11-08 | 2019-03-15 | 闻泰通讯股份有限公司 | Reduce method, system and the mobile terminal of SAR value |
| WO2019164507A1 (en) * | 2018-02-23 | 2019-08-29 | Hewlett-Packard Development Company, L.P. | Specific absorption rate (sar) value regulations |
| CN110244134A (en) * | 2019-05-06 | 2019-09-17 | 上海安费诺永亿通讯电子有限公司 | Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR |
| US20220039025A1 (en) * | 2020-07-29 | 2022-02-03 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for detecting state of proximity sensor, terminal and non-transitory computer-readable storage medium |
-
2022
- 2022-04-15 CN CN202210396492.5A patent/CN114978217A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090047998A1 (en) * | 2007-08-16 | 2009-02-19 | Motorola, Inc. | Method and apparatus for controlling power transmission levels for a mobile station having transmit diversity |
| US20120052820A1 (en) * | 2010-08-31 | 2012-03-01 | Acer Incorporated | Mobile Electronic Device and Data Process System Utilizing the Same |
| CN201910796U (en) * | 2011-01-06 | 2011-07-27 | 纬创资通股份有限公司 | Antenna switching device and mobile communication device with same |
| CN102761640A (en) * | 2012-07-04 | 2012-10-31 | 中兴通讯股份有限公司 | Method for optimizing indexes of antenna and mobile terminal |
| WO2018058409A1 (en) * | 2016-09-29 | 2018-04-05 | 深圳天珑无线科技有限公司 | Antenna system, terminal, and signal processing method and system |
| WO2019164507A1 (en) * | 2018-02-23 | 2019-08-29 | Hewlett-Packard Development Company, L.P. | Specific absorption rate (sar) value regulations |
| CN109474740A (en) * | 2018-11-08 | 2019-03-15 | 闻泰通讯股份有限公司 | Reduce method, system and the mobile terminal of SAR value |
| CN110244134A (en) * | 2019-05-06 | 2019-09-17 | 上海安费诺永亿通讯电子有限公司 | Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR |
| US20220039025A1 (en) * | 2020-07-29 | 2022-02-03 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and apparatus for detecting state of proximity sensor, terminal and non-transitory computer-readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104122974A (en) | Mobile communication device with human body recognition function | |
| EP1564896A1 (en) | Impedance matching for an antenna | |
| US10848193B2 (en) | Method and system for reducing radiation damage from mobile terminals | |
| US6895225B1 (en) | System for matching an antenna for a wireless communication device | |
| US6615059B1 (en) | Mobile terminal interface | |
| CN201352788Y (en) | Portable electronic device | |
| CN107592405A (en) | The processing method and mobile terminal of a kind of antenna tuning parameters | |
| CN108259056A (en) | Antenna module, terminal device and improvement aerial radiation refer to calibration method | |
| CN1794617A (en) | Phone talking method of mobile terminal apparatus based on signal transmit-receive intensity advisor | |
| US7746290B2 (en) | Adaptive antenna matching | |
| CN108521512A (en) | A kind of antenna parameter adjusting method and electronic equipment | |
| CN114978217A (en) | Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna | |
| EP1496715A4 (en) | Mobile terminal device and communication device system using the mobile terminal device | |
| JP4071554B2 (en) | Antenna device | |
| KR20070114611A (en) | Method and apparatus for switching antenna according to user's grip type | |
| KR20050120390A (en) | Speaker phone control apparatus and method for mobile station using proximity sensor | |
| CN201039286Y (en) | Mobile phone theft prevention system | |
| WO2021036377A1 (en) | 5g antenna control method and device, 5g terminal and computer-readable storage medium | |
| FI110564B (en) | A system for activating and deactivating automatic noise reduction (ANC) on a mobile phone | |
| US8340736B2 (en) | Mobile electronic device | |
| CN102045891A (en) | Dual-mode switch communication device | |
| US20040203536A1 (en) | Portable electronic device | |
| KR100250963B1 (en) | Method and apparatus for mobile phone action control for duplication structure antenna | |
| KR100341991B1 (en) | Idle state current consumption device in mobile phone | |
| CN214754165U (en) | Automatic switching device for internal and external antennas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |