CN110244134A - Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR - Google Patents
Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR Download PDFInfo
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- CN110244134A CN110244134A CN201910372037.XA CN201910372037A CN110244134A CN 110244134 A CN110244134 A CN 110244134A CN 201910372037 A CN201910372037 A CN 201910372037A CN 110244134 A CN110244134 A CN 110244134A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
Abstract
The invention discloses a kind of devices for reducing antenna SAR, comprising: first antenna radiating element, capacitive sensing electrode and short distance inductor, first antenna radiating element and capacitive sensing electrode are arranged to generate the first self-induction capacitor；First signal incoming end of short distance inductor is electrically connected with first antenna radiating element, and the second signal incoming end of short distance inductor is electrically connected with capacitive sensing electrode；Short distance inductor is used to detect the variation of the first self-induction capacitor, and in response to the variation of the first self-induction capacitor, short distance inductor sends the signal for reducing antenna transmission power toward control module.The device of the reduction antenna SAR can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.The invention also discloses a kind of method for reducing antenna SAR, a kind of conductive material detection device of multiplex antenna element and a kind of electronic equipments that can transmit wireless signal.
Description
Technical field
The invention belongs to technical field of communication equipment more particularly to a kind of device, method, conductive materials for reducing antenna SAR
Detection device and electronic equipment.
Background technique
With development communication technologies, radio communication product is ubiquitous in people's lives, at the same time, people couple
The unhealthful concern of consumer electronics also increasingly increases.When human body comes close to or in contact with hand-hold communication appliance, tissue can inhale
Dissipative electromagnetic energy is received, however the electromagnetic wave energy of absorption of human body is higher, it is bigger to the potential threat of human health, therefore,
There are relevant definition and standard, it is specified that the electricity of electromagnetic wave wireless communication apparatus can be emitted this absorption value in the certification such as FCC, CE
Magnetic wave energy contribution ratios are needed lower than certain safety value.Therefore, in present engineering field, in addition to considering TRP (omnidirectional radiation function
Rate) and TIS (total omnidirectional sensitivity) except, SAR (Specific Absorption Rate) be also a very important finger
Mark.In wireless electronic product performance test, TRP index and SAR index in OTA are the parameter of conflict, TRP in OTA
When larger the power of antenna could by Net long wave radiation, but SAR test in, TRP is bigger, and the power being absorbed by the body is also bigger,
Therefore, this requires go two indexs of balance to reach respective standard in Antenna Design.
In the early stage when conceptual design, engineer would generally from antenna form, placement location, antenna ambient influence is biggish penetrates
Frequency component etc. goes to consider this two indexs, in addition to this, after design the phase it is also possible to consider by reduce transmission power come
Reduce SAR value, but the reduction transmission power of this mode not instead of not simply, people close to when triggering starting drop power mechanism
Meet SAR index, in order to improve the applicability of equipment, relevant manufactures have developed proximity sensing device, and this inductor can incude
It is close to human body, and this instruction is transferred to radio-frequency module to achieve the effect that reduce transmission power.
Increased proximity sensing device can occupy the inner space of radio communication product, not be suitable for requiring equipment light, thin, small
And the radio communication product of narrow frame.
Summary of the invention
Technical purpose of the invention is to provide a kind of device, method, conductive material detection device and electronics for reducing antenna SAR
Equipment, the device of the reduction antenna SAR can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.
To solve the above problems, the technical solution of the present invention is as follows:
A kind of device reducing antenna SAR, comprising: first antenna radiating element, capacitive sensing electrode and closely sense
Device is answered, the first antenna radiating element and the capacitive sensing electrode are arranged to generate the first self-induction capacitor；The low coverage
The first signal incoming end from inductor is electrically connected with the first antenna radiating element, the second letter of the short distance inductor
Number incoming end is electrically connected with the capacitive sensing electrode；The short distance inductor is used to detect the change of the first self-induction capacitor
Change, in response to the variation of the first self-induction capacitor, the short distance inductor is sent toward control module reduces antenna transmitting function
The signal of rate.
An embodiment according to the present invention, the capacitive sensing electrode are an antenna radiation unit.
An embodiment according to the present invention, the variation of the first self-induction capacitor is by close to the first antenna radiating element
Conductive material triggering；And/or it is triggered by the conductive material close to the capacitive sensing electrode.
An embodiment according to the present invention, the device for reducing antenna SAR further includes the second antenna radiation unit, and described the
Two antenna radiation units and the capacitive sensing electrode are arranged to generate the second self-induction capacitor；The of the short distance inductor
Three signal incoming ends are electrically connected with second antenna radiation unit；The short distance inductor is also used to detect described second certainly
The variation that electrification holds, in response to the variation of the second self-induction capacitor, the short distance inductor sends toward control module and reduces
The signal of antenna transmission power.
An embodiment according to the present invention, the variation of the second self-induction capacitor is by close to the first antenna radiating element
Conductive material triggering；And/or it is triggered by the conductive material close to the capacitive sensing electrode；And/or by close to the second antenna spoke
Penetrate the conductive material triggering of unit.
Based on identical design, the present invention also provides another device for reducing antenna SAR, including coupled antenna and
Proximity Sensor, the coupled antenna include the first radiation branch and the second radiation branch, first radiation branch and institute
It states and is arranged to be produced from inductance capacitance between the second radiation branch；First signal incoming end of the short distance inductor and institute
The electrical connection of the first radiation branch is stated, the second signal incoming end of the short distance inductor is electrically connected with second radiation branch
It connects；The short distance inductor is used to detect the variation of the self-induction capacitor, described close in response to the variation of the self-induction capacitor
Distance-sensor sends the signal for reducing antenna transmission power toward control module.
An embodiment according to the present invention, first radiation branch are connect with radio circuit, and second radiation branch connects
It is connected to capacitor cell, the capacitor cell is connected to ground.
Based on identical design, the present invention provides a kind of methods for reducing antenna SAR, by an antenna radiation unit and one
Capacitive sensing electrode is set as being produced from electrification appearance；Whether detection self-induction capacitor changes, if changing, reduces antenna
Transmission power；Wherein, the variation of the self-induction capacitor is triggered by the conductive material close to the antenna radiation unit；And/or by leaning on
The conductive material triggering of the nearly capacitive sensing electrode.
Based on identical design, the present invention also provides a kind of methods for reducing antenna SAR, by the coupling with multiple details
The first radiation branch and the second radiation branch for closing antenna are set as being produced from inductance capacitance；Whether detection self-induction capacitor becomes
Change, if changing, reduces antenna transmission power；Wherein, the variation of the self-induction capacitor is by close to the coupled antenna
Conductive material triggering.
Based on identical design, the present invention also provides a kind of conductive material detection devices of multiplex antenna element, comprising: the
One antenna radiation unit, capacitive sensing electrode and short distance inductor, the first antenna radiating element and the capacitor sense
Electrode is answered to be arranged to generate the first self-induction capacitor；First signal incoming end of the short distance inductor and the first antenna
Radiating element electrical connection, the second signal incoming end of the short distance inductor are electrically connected with the capacitive sensing electrode；It is described
Short distance inductor is used to detect the variation of the first self-induction capacitor, described in response to the variation of the first self-induction capacitor
Short distance inductor sends the signal for detecting conductive material toward control module.
Based on identical design, the present invention also provides a kind of conductive material detection devices of multiplex antenna element, including coupling
Antenna and Proximity Sensor are closed, the coupled antenna includes the first radiation branch and the second radiation branch, first spoke
It penetrates between branch and second radiation branch and is arranged to be produced from inductance capacitance；First signal of the short distance inductor
Incoming end is electrically connected with first radiation branch, the second signal incoming end of the short distance inductor and second radiation
Branch's electrical connection；The short distance inductor is used to detect the variation of the self-induction capacitor, in response to the change of the self-induction capacitor
Change, the short distance inductor sends the signal for detecting conductive material toward control module.
Based on identical design, the present invention also provides the electronic equipments that one kind can transmit wireless signal, including above-mentioned
Reduce the device of antenna SAR.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art
Fruit:
1) device of the reduction antenna SAR in one embodiment of the invention is using a first antenna radiating element as an electricity
Hold induction electrode, the first antenna radiating element and another capacitive sensing electrode are set as generating the first self-induction capacitor, closely
Inductor is used to detect the variation of the first self-induction capacitor, and when the first self-induction capacitor changes, short distance inductor can be past
Control module sends the signal for reducing antenna transmission power, and the transmission power by reducing first antenna radiating element can reduce day
Line SAR value.The present embodiment reduces the component of proximity sensing device by being multiplexed first antenna radiating element, namely reduces neighbouring
The occupied space of inductor, more can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.
2) device of the reduction antenna SAR in one embodiment of the invention is using two antenna radiation units as capacitor sense
Electrode is answered, without increasing new capacitive sensing electrod assembly, further reduces the component of approaching sensor, namely reduce and face
The occupied space of nearly sensor.
3) device of the reduction antenna SAR in one embodiment of the invention includes first antenna radiating element, the second antenna spoke
Unit and capacitive sensing electrode are penetrated, the first self-induction capacitor is generated between capacitive sensing electrode and first antenna radiating element,
The second self-induction capacitor is generated between capacitive sensing electrode and the second antenna radiation unit, short distance inductor is able to detect first
The drop SAR effect of double antenna may be implemented in the variation of self-induction capacitor and the second self-induction capacitor in this way.
Detailed description of the invention
Fig. 1 is a kind of configuration diagram of the device of reduction antenna SAR of the invention；
Fig. 2 is the configuration diagram of another device for reducing antenna SAR of the invention；
Fig. 3 is that another of the invention reduces the configuration diagram of the device of antenna SAR；
Fig. 4 is that another of the invention reduces the configuration diagram of the device of antenna SAR.
Description of symbols:
1: first antenna radiating element；2: capacitive sensing electrode；3: short distance inductor；4: the second antenna radiation units；
5: the first radiation branch；6: the second radiation branch；7: radio circuit.
Specific embodiment
A kind of the device of antenna SAR, method, conduction are reduced to proposed by the present invention below in conjunction with the drawings and specific embodiments
Analyte detection device and electronic equipment are described in further detail.According to following explanation and claims, advantages of the present invention and
Feature will become apparent from.
Embodiment 1
Referring to Fig. 1, it is a kind of reduce antenna SAR device, comprising: first antenna radiating element 1, capacitive sensing electrode 2 with
And short distance inductor 3, first antenna radiating element 1 and capacitive sensing electrode 2 are arranged to generate the first self-induction capacitor；Low coverage
The first signal incoming end from inductor 3 is electrically connected with first antenna radiating element 1, and the second signal of short distance inductor 3 connects
Enter end to be electrically connected with capacitive sensing electrode 2；Short distance inductor 3 is used to detect the variation of the first self-induction capacitor, in response to first
The variation of self-induction capacitor, short distance inductor 3 send the signal for reducing antenna transmission power toward control module.
The device of reduction antenna SAR in the present embodiment regard a first antenna radiating element 1 as a capacitive sensing
Electrode, the first antenna radiating element 1 and another capacitive sensing electrode 2 are set as generating the first self-induction capacitor, closely incude
Device 3 is used to detect the variation of the first self-induction capacitor, and when the first self-induction capacitor changes, short distance inductor 3 can be toward control
Molding block sends the signal for reducing antenna transmission power, and the transmission power by reducing first antenna radiating element 1 can reduce day
Line SAR value can be used for solving the problems, such as SAR in mimo antenna.The present embodiment is reduced by being multiplexed first antenna radiating element 1
The component of approaching sensor, namely reduce the occupied space of approaching sensor, it more can be suitably used for requiring equipment light, thin, small
And the radio communication product of narrow frame.
Further, referring to Fig. 3, capacitive sensing electrode 2 is an antenna radiation unit.Reduction antenna in the present embodiment
The device of SAR is using two antenna radiation units as capacitive sensing electrode, without increasing new capacitive sensing electrod assembly,
The component of approaching sensor is further reduced, namely reduces the occupied space of approaching sensor.
Further, the variation of the first self-induction capacitor is triggered by the conductive material close to first antenna radiating element 1；And/or
It is triggered by the conductive material close to capacitive sensing electrode 2.Specifically, the device of the reduction antenna SAR in the present embodiment is for examining
Whether have human body close, e.g. the skin of manpower or people if surveying.When manpower is close to first antenna radiating element 1 or capacitive sensing
When electrode 2, due to the conductive characteristic of human body, interference can be generated to the self-induction capacitor generated between electrode, lead to self-induction capacitor
Value reduces.The signal that this variation generates can be transmitted to again module by the processing of short distance inductor 3 to start and reduce transmitting function
Rate.It should be noted that it is of the present invention it is " close " refer to the variation for influencing whether self-induction capacitor, the direction and area of " close "
Domain should be limited by the direction for influencing self-induction capacitance variations with region.It should also be noted that, the present invention in response to from
Inductance capacitance variation refers to can just respond when the variable quantity of self-induction capacitor requires more than certain threshold value.
Further, referring to Fig. 2, the device for reducing antenna SAR further includes the second antenna radiation unit 4, the second antenna spoke
It penetrates unit 4 and capacitive sensing electrode is arranged to generate the second self-induction capacitor；The third signal incoming end of short distance inductor 3 with
The electrical connection of second antenna radiation unit 4；Short distance inductor 3 is also used to detect the variation of the second self-induction capacitor, in response to second
The variation of self-induction capacitor, short distance inductor 3 send the signal for reducing antenna transmission power toward control module.In the present embodiment
The device for reducing antenna SAR includes first antenna radiating element 1, the second antenna radiation unit 4 and capacitive sensing electrode, capacitor
The first self-induction capacitor, capacitive sensing electrode and the second aerial radiation are generated between induction electrode and first antenna radiating element 1
The second self-induction capacitor is generated between unit 4, short distance inductor 3 is able to detect the first self-induction capacitor and the second self-induction electricity
The drop SAR effect of double antenna may be implemented in the variation of appearance in this way.It further expands, it can be achieved that the drop SAR of more multiple groups antenna is imitated
Fruit can be used for solving the problems, such as SAR in mimo antenna.
Specifically, the variation of the second self-induction capacitor is triggered by the conductive material close to first antenna radiating element 1；And/or by
Conductive material close to capacitive sensing electrode triggers；And/or it is triggered by the conductive material close to the second antenna radiation unit 4.
Embodiment 2
Based on identical design, referring to Fig. 4, the present invention also provides another devices for reducing antenna SAR, including coupling
Antenna and Proximity Sensor, coupled antenna include the first radiation branch 5 and the second radiation branch 6, the first radiation branch 5 with
It is arranged to be produced from inductance capacitance between second radiation branch 6；First signal incoming end of short distance inductor 3 and the first spoke
The electrical connection of branch 5 is penetrated, the second signal incoming end of short distance inductor 3 is electrically connected with the second radiation branch 6；Short distance inductor
3 for detecting the variation of self-induction capacitor, and in response to the variation of self-induction capacitor, short distance inductor 3 sends toward control module and reduces
The signal of antenna transmission power.
Two radiation branch in coupled antenna are cleverly multiplexed by the device of the reduction antenna SAR in the present embodiment very much
For two capacitive sensing electrodes, short distance inductor 3 can be used for detecting the variation of self-induction capacitor, when self-induction capacitor changes
When, short distance inductor 3 can send the signal for reducing antenna transmission power toward control module, single by reducing first antenna radiation
The transmission power of member 1 can reduce antenna SAR value, can be used for solving the problems, such as SAR in mimo antenna.The present embodiment passes through multiplexing coupling
Two radiation branch closed in antenna reduce the component of approaching sensor, namely reduce the occupied space of approaching sensor,
It more can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.
Further, the first radiation branch 5 is connect with radio circuit 7, and the second radiation branch 6 is connected with capacitor cell C1,
Capacitor cell C1 is connected to ground.
Embodiment 3
Based on identical design, the present invention provides a kind of methods for reducing antenna SAR, by an antenna radiation unit and one
Capacitive sensing electrode is set as being produced from electrification appearance；Whether detection self-induction capacitor changes, if changing, reduces antenna
Transmission power；Wherein, the variation of self-induction capacitor is triggered by the conductive material close to antenna radiation unit；And/or by close to capacitor sense
The conductive material of electrode is answered to trigger.
Referring to Fig. 1, the method for the reduction antenna SAR in the present embodiment is electric by an antenna radiation unit and another capacitive sensing
Pole is set as being produced from electrification appearance, and short distance inductor 3 is used to detect the variation of self-induction capacitor, when self-induction capacitor changes
When, short distance inductor 3 can send the signal for reducing antenna transmission power toward control module, by reducing antenna radiation unit
Transmission power can reduce antenna SAR value, can be used for solving the problems, such as SAR in mimo antenna.The present embodiment passes through multiplex antenna spoke
Penetrating unit reduces the component of approaching sensor as capacitive sensing electrode, namely reduces the occupied space of approaching sensor,
It more can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.
Embodiment 4
Based on identical design, the present invention also provides a kind of methods for reducing antenna SAR, by the coupling with multiple details
The first radiation branch 5 and the second radiation branch 6 for closing antenna are set as being produced from inductance capacitance；Whether detection self-induction capacitor occurs
Variation, if changing, reduces antenna transmission power；Wherein, the variation of self-induction capacitor is by the conductive material close to coupled antenna
Triggering.
Referring to Fig. 4, the method for the reduction antenna SAR in the present embodiment cleverly radiates two in coupled antenna very much
Branch is set as being produced from inductance capacitance (two radiation branch i.e. in multiplexing coupled antenna are as capacitive sensing electrode), low coverage
From the variation that inductor 3 can be used for detecting self-induction capacitor, when self-induction capacitor changes, short distance inductor 3 can be toward control
Molding block sends the signal for reducing antenna transmission power, and the transmission power by reducing first antenna radiating element 1 can reduce day
Line SAR value can be used for solving the problems, such as SAR in mimo antenna.The present embodiment passes through two radiation point in multiplexing coupled antenna
Branch reduces the component of approaching sensor, namely reduces the occupied space of approaching sensor, more can be suitably used for requiring equipment
Gently, thin, small and narrow frame radio communication product.
Embodiment 5
Based on identical design, with reference to Fig. 1, the present invention also provides a kind of conductive analyte detections of multiplex antenna element (to pass
Sense) device, comprising: first antenna radiating element 1, capacitive sensing electrode and short distance inductor 3, first antenna radiating element
1 is arranged to be produced from electrification appearance with capacitive sensing electrode；The the first signal incoming end and first antenna spoke of short distance inductor 3
The electrical connection of unit 1 is penetrated, the second signal incoming end of short distance inductor 3 is electrically connected with capacitive sensing electrode；Short distance inductor 3
For detecting the variation of self-induction capacitor, in response to the variation of self-induction capacitor, short distance inductor 3 is detected toward control module transmission
The signal of conductive material.
The conductive material detection device of multiplex antenna element in the present embodiment is by first antenna radiating element 1 and another capacitor
Induction electrode is set as being produced from electrification appearance, and short distance inductor 3 is used to detect the variation of self-induction capacitor, when self-induction capacitor is sent out
When changing, short distance inductor 3 can send the signal for detecting conductive material toward control module.The present embodiment passes through multiplex antenna
Radiating element reduces the component of approaching sensor as capacitive sensing electrode, namely reduces the occupancy sky of approaching sensor
Between, it more can be suitably used for requiring that equipment is light, thin, small and narrow frame radio communication product.
Embodiment 6
Based on identical design, referring to Fig. 4, the present invention also provides a kind of conductive analyte detections of multiplex antenna element (to pass
Sense) device, including coupled antenna and Proximity Sensor, coupled antenna include the first radiation branch 5 and the second radiation branch
6, it is arranged to be produced from inductance capacitance between the first radiation branch 5 and the second radiation branch 6；The first of short distance inductor 3
Signal incoming end is electrically connected with the first radiation branch 5, the second signal incoming end of short distance inductor 3 and the second radiation branch 6
Electrical connection；Short distance inductor 3 is used to detect the variation of self-induction capacitor, in response to the variation of self-induction capacitor, short distance inductor 3
The signal for detecting conductive material is sent toward control module.
The conductive material detection device of multiplex antenna element in the present embodiment is very cleverly by two in coupled antenna
Radiation branch is set as being produced from inductance capacitance (two radiation branch i.e. in multiplexing coupled antenna are as capacitive sensing electrode),
Short distance inductor 3 can be used for detecting the variation of self-induction capacitor, when self-induction capacitor changes, 3 meeting of short distance inductor
The signal for detecting conductive material is sent toward control module.The present embodiment is reduced by two radiation branch in multiplexing coupled antenna
The component of approaching sensor, namely reduce the occupied space of approaching sensor, more can be suitably used for requiring equipment it is light, it is thin,
Small and narrow frame radio communication product.
Embodiment 7
Based on identical design, the present invention also provides the electronic equipments that one kind can transmit wireless signal, including above-mentioned
Reduce the device of antenna SAR.The electronic equipment that wireless signal can be transmitted refers in particular to notebook, the hand-helds such as tablet computer or mobile phone
Or Worn type mobile terminal system antenna, such as wrist-watch, earphone, glasses miniature device.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies
Within enclosing, then still fall within the protection scope of the present invention.
Claims (12)
1. it is a kind of reduce antenna SAR device characterized by comprising first antenna radiating element, capacitive sensing electrode and
Short distance inductor,
The first antenna radiating element and the capacitive sensing electrode are arranged to generate the first self-induction capacitor；
First signal incoming end of the short distance inductor is electrically connected with the first antenna radiating element, the short distance sense
The second signal incoming end of device is answered to be electrically connected with the capacitive sensing electrode；
The short distance inductor is used to detect the variation of the first self-induction capacitor, in response to the change of the first self-induction capacitor
Change, the short distance inductor sends the signal for reducing antenna transmission power toward control module.
2. reducing the device of antenna SAR as described in claim 1, which is characterized in that the capacitive sensing electrode is an antenna
Radiating element.
3. reducing the device of antenna SAR as claimed in claim 1 or 2, which is characterized in that the variation of the first self-induction capacitor
It is triggered by the conductive material close to the first antenna radiating element；And/or
It is triggered by the conductive material close to the capacitive sensing electrode.
4. reducing the device of antenna SAR as described in claim 1, which is characterized in that further include the second antenna radiation unit, institute
It states the second antenna radiation unit and the capacitive sensing electrode is arranged to generate the second self-induction capacitor；
The third signal incoming end of the short distance inductor is electrically connected with second antenna radiation unit；
The short distance inductor is also used to detect the variation of the second self-induction capacitor, in response to the second self-induction capacitor
Variation, the short distance inductor send the signal for reducing antenna transmission power toward control module.
5. as claimed in claim 4 reduce antenna SAR device, which is characterized in that the variation of the second self-induction capacitor by
Conductive material close to the capacitive sensing electrode triggers；And/or
It is triggered by the conductive material close to second antenna radiation unit.
6. a kind of device for reducing antenna SAR, which is characterized in that including coupled antenna and short distance inductor, the coupling
Antenna includes the first radiation branch and the second radiation branch, is set between first radiation branch and second radiation branch
It is set to and is produced from inductance capacitance；
First signal incoming end of the short distance inductor is electrically connected with first radiation branch, the short distance inductor
Second signal incoming end be electrically connected with second radiation branch；
The short distance inductor is used to detect the variation of the self-induction capacitor, described in response to the variation of the self-induction capacitor
Short distance inductor sends the signal for reducing antenna transmission power toward control module.
7. reducing the device of antenna SAR as claimed in claim 6, which is characterized in that first radiation branch and radio frequency electrical
Road connection, second radiation branch are connected with capacitor cell, and the capacitor cell is connected to ground.
8. a kind of method for reducing antenna SAR, which is characterized in that set an antenna radiation unit and a capacitive sensing electrode to
It is produced from electrification appearance；
It detects whether the self-induction capacitor changes, if changing, reduces antenna transmission power；
Wherein, the variation of the self-induction capacitor is triggered by the conductive material close to the antenna radiation unit；And/or by close to described
The conductive material of capacitive sensing electrode triggers.
9. a kind of method for reducing antenna SAR, which is characterized in that by the first radiation branch of the coupled antenna with multiple details
It is set as being produced from inductance capacitance with the second radiation branch；
It detects whether the self-induction capacitor changes, if changing, reduces antenna transmission power；
Wherein, the variation of the self-induction capacitor is triggered by the conductive material close to the coupled antenna.
10. a kind of conductive material detection device of multiplex antenna element characterized by comprising first antenna radiating element, capacitor
Induction electrode and short distance inductor,
The first antenna radiating element and the capacitive sensing electrode are arranged to generate the first self-induction capacitor；
First signal incoming end of the short distance inductor is electrically connected with the first antenna radiating element, the short distance sense
The second signal incoming end of device is answered to be electrically connected with the capacitive sensing electrode；
The short distance inductor is used to detect the variation of the first self-induction capacitor, in response to the change of the first self-induction capacitor
Change, the short distance inductor sends the signal for detecting conductive material toward control module.
11. a kind of conductive material detection device of multiplex antenna element, which is characterized in that sensed including coupled antenna and short distance
Device, the coupled antenna include the first radiation branch and the second radiation branch, and first radiation branch and described second radiate
It is arranged to be produced from inductance capacitance between branch；
First signal incoming end of the short distance inductor is electrically connected with first radiation branch, the short distance inductor
Second signal incoming end be electrically connected with second radiation branch；
The short distance inductor is used to detect the variation of the self-induction capacitor, described in response to the variation of the self-induction capacitor
Short distance inductor sends the signal for detecting conductive material toward control module.
12. the electronic equipment that one kind can transmit wireless signal, which is characterized in that including described in claim 1 to 7 any one
Reduce the device of antenna SAR.
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| CN201910372037.XA CN110244134A (en) | 2019-05-06 | 2019-05-06 | Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR |
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| CN201910372037.XA CN110244134A (en) | 2019-05-06 | 2019-05-06 | Reduce device, method, conductive material detection device and the electronic equipment of antenna SAR |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114978217A (en) * | 2022-04-15 | 2022-08-30 | 深圳市中天迅通信技术股份有限公司 | Method and system for reducing SAR (synthetic aperture radar) of mobile phone antenna |
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