CN107565529A - Electrostatic protection apparatus, radio circuit and electronic equipment - Google Patents
Electrostatic protection apparatus, radio circuit and electronic equipment Download PDFInfo
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- CN107565529A CN107565529A CN201710775701.6A CN201710775701A CN107565529A CN 107565529 A CN107565529 A CN 107565529A CN 201710775701 A CN201710775701 A CN 201710775701A CN 107565529 A CN107565529 A CN 107565529A
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Abstract
The embodiment of the present application discloses a kind of electrostatic protection apparatus, radio circuit and electronic equipment.The electrostatic protection apparatus includes：Front end interface, electrostatic discharge protective circuit and back-end circuit；The electrostatic discharge protective circuit is located between the front end interface and the back-end circuit, and one end of the electrostatic discharge protective circuit is connected with the front end interface, the other end is connected with the back-end circuit；The electrostatic discharge protective circuit is made up of static leakage circuit and inductance connection, and the electrostatic induced current for being transmitted to the front end interface is released.The embodiment of the present application can provide effective electrostatic protection for electronic equipment.
Description
Technical field
The application is related to field of terminal technology, more particularly to a kind of electrostatic protection apparatus, radio circuit and electronic equipment.
Background technology
Static discharge (Electro Static Discharge, ESD) is a natural phenomena very common in life, no
Surface may all accumulate a certain amount of electric charge when jljl material contacts with each other, and when running into other objects, there may be up to ten
Several kilovolts of static discharge voltage.Electronic equipment all can suffer from the infringement of this electromagnetic energy.With current microelectronics member device
The extensive use of part, ESD problems are also more paid attention to.
The electronic equipment such as mobile phone, notebook computer, tablet personal computer is all very accurate electronic equipment at present.It is for example, existing
It is more and more compact thin in mobile phone, the integrated level of internal electronic component also more and more higher.During electronic equipment use,
Static discharge can damage some circuits such as radio circuit etc. in electronic equipment, influence the normal work of electronic equipment.
The content of the invention
The embodiment of the present application provides a kind of electrostatic protection apparatus, radio circuit and electronic equipment, can be carried for electronic equipment
For effective electrostatic protection.
In a first aspect, the embodiment of the present application provides a kind of electrostatic protection apparatus, including：Front end interface, electrostatic discharge protective circuit
And back-end circuit；
The electrostatic discharge protective circuit between the front end interface and the back-end circuit, the electrostatic discharge protective circuit
One end is connected with the front end interface, the other end is connected with the back-end circuit；
The electrostatic discharge protective circuit is made up of static leakage circuit and inductance connection, for what is transmitted to the front end interface
Electrostatic induced current is released.
Second aspect, the embodiment of the present application provide a kind of radio circuit, including RF transceiver, radio frequency switching circuit core
Piece, electrostatic discharge protective circuit and antenna；The RF transceiver, radio frequency switching circuit chip, electrostatic discharge protective circuit and antenna
It is sequentially connected；The electrostatic discharge protective circuit is made up of static leakage circuit and inductance connection, for the quiet of the antenna transmission
Electric current is released；The radio frequency switching circuit chip is used to be selectively turned between the RF transceiver and the antenna
Communications band.
The third aspect, the embodiment of the present application additionally provide a kind of electronic equipment, including screen, housing and electrostatic protection dress
Put, the screen and the electrostatic protection apparatus are arranged on the enclosure interior, and the electrostatic protection apparatus is that the application is real
The electrostatic protection apparatus of example offer is provided.
The embodiment of the present application can carry out electrostatic by the electrostatic discharge protective circuit that static leakage circuit and inductance connection form
Release, the electrostatic leakage ability of electronic equipment can be increased, reduce infringement of the electrostatic to back-end circuit, provided for electronic equipment
Effective electrostatic protection, improve the stability of electronic equipment.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those skilled in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the first structural representation for the electronic equipment that the embodiment of the present application provides.
Fig. 2 is second of structural representation of the electronic equipment that the embodiment of the present application provides.
Fig. 3 is the third structural representation for the electronic equipment that the embodiment of the present application provides.
Fig. 4 is the 4th kind of structural representation of the electronic equipment that the embodiment of the present application provides.
Fig. 5 is the first structural representation for the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 6 is second of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 7 is the third structural representation for the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 8 is the 4th kind of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Fig. 9 is the 5th kind of structural representation of the electrostatic protection apparatus that the embodiment of the present application provides.
Figure 10 is the first structural representation for the radio circuit that the embodiment of the present application provides.
Figure 11 is second of structural representation of the radio circuit that the embodiment of the present application provides.
Figure 12 is the 5th kind of structural representation of the electronic equipment that the embodiment of the present application provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, the every other implementation that those skilled in the art are obtained under the premise of creative work is not made
Example, belong to the scope of the application protection.
In the description of the present application, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are based on orientation shown in the drawings or position relationship, are for only for ease of
Describe the application and simplify to describe, rather than indicate or imply that signified device or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that limitation to the application.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more feature.
In the description of the present application, " multiple " are meant that two or more, unless otherwise specifically defined.
, it is necessary to illustrate in the description of the present application, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
In this application, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the application.In order to
Simplify disclosure herein, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
And purpose does not lie in limitation the application.In addition, the application can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting
Relation.In addition, this application provides various specific techniques and material examples, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
The embodiment of the present application provides a kind of electronic equipment.The electronic equipment can be the equipment such as smart mobile phone, tablet personal computer.
With reference to figure 1, electronic equipment 100 can include cover plate 101, display screen 102, circuit board 103 and housing 104.
Wherein, cover plate 101 is installed on display screen 102, to cover display screen 102.Cover plate 101 can be transparent glass cover
Plate.In certain embodiments, cover plate 101 can be with glass cover-plates made of material such as sapphires.
Display screen 102 is arranged on housing 104, to form the display surface of electronic equipment 100.Display screen 102 can include
Viewing area 102A, non-display area 102B and non-display area 102C.Viewing area 102A is used for display image, text etc.
Information.Non-display area 102B not display informations.Non-display area 102B bottom can set fingerprint module, touch-control circuit etc.
Functional unit.Non-display area 102C bottom can set the devices such as light proximity transducer, front camera, receiver.
Circuit board 103 is arranged on inside housing 104.Circuit board 103 can be the mainboard of electronic equipment 100.Circuit board 103
On can be integrated with the functional units such as camera, light proximity transducer and processor.Meanwhile display screen 102 can electrically connect
To circuit board 103.For example the position corresponding with non-display area 102C of circuit board 103 is integrated with camera, light proximity transducer
Deng.
In certain embodiments, radio frequency (Radio Frequency, RF) circuit is provided with circuit board 103.Radio circuit
Wireless network and the network equipment (for example, server, base station etc.) or other electronic equipments (for example, smart mobile phone etc.) can be passed through
Communication, with the information transmit-receive completed and between the network equipment or other electronic equipments.
In certain embodiments, as shown in Fig. 2 the electronic equipment also comprising rear camera 105, flash lamp 106 and
Antenna 107.Wherein, the camera 105 can be single camera, such as respectively 16,000,000 pixel wide-angle cameras or 2000
Ten thousand pixel focal length cameras.Can be with shooting image by the electronic equipment of camera 105.In certain embodiments, this rearmounted is taken the photograph
As first 105 can also be dual camera, such as wide-angle camera and focal length camera.
Wherein, antenna 107 can be connected with the radio circuit on circuit board 103, for transceiving radio frequency signal.
In certain embodiments, as shown in figure 3, the electronic equipment also includes：Neck 108, the screen locking button 109 of SIM card
Etc..Neck 108 is used to place SIM card, and is electrically connected by the shell fragment in neck 108 with circuit board 103；The neck 108
It is arranged on screen locking button 109 in housing 104.Screen locking button 109 be used for realize that display screen 102 is locked and unlocked, such as, when with
When screen locking button 109 is pressed at family, the locking of display screen 102 is extinguished.
In certain embodiments, as shown in figure 4, the electronic equipment also includes：Usb 1 10, the sound being arranged in housing
Frequency interface 111, the first volume adjusting key 112 and the second volume adjusting key 113.
In one embodiment, with reference to figure 5 to Fig. 7, Fig. 5 is a kind of electrostatic protection apparatus 200 that the embodiment of the present application provides
Structural representation, the electrostatic protection apparatus 200 includes：Front end interface 21, electrostatic discharge protective circuit 22 and back-end circuit 23.
Wherein, electrostatic discharge protective circuit 22 is between front end interface 21 and back-end circuit 23, and the one of electrostatic discharge protective circuit 22
End is connected with front end interface 21, the other end and back-end circuit 23 connect.
Electrostatic discharge protective circuit 22 can be made up of static leakage circuit 221 and the connection of inductance 222, for front end interface 21
The electrostatic induced current of transmission is released.
Wherein, front end interface 21 can be the interface device that electrostatic is introduced on electronic equipment.For example front end interface 21 can be with
Including：Antenna 107, USB (Universal Serial Bus, USB) interface 110, COBBAIF 111, the first sound
Measure adjusting key 112, the second volume adjusting key 113, the shell fragment of neck 108, screen locking key 109, camera 105 etc..
Back-end circuit 23 is to need by the circuit of electrostatic protection, such as, rf processing circuitry can be included, show that driving is electric
Road, finger prints processing circuit etc., the back-end circuit 23 can also include needing by element of electrostatic protection etc..
Wherein, the static leakage circuit 221 is used to electrostatic induced current is discharged or released.The static leakage circuit 221
It can include：Transient Suppression Diode (Transient Voltage Suppressor, TVS).In one embodiment, wink
It can be ambipolar Transient Suppression Diode that state, which suppresses diode,.
TVS is a kind of high-effect protection device of diode.When the two poles of the earth of TVS diode are by reverse transient state high energy
During stroke, the high impedance of its two interpolar can be changed into Low ESR, absorption is up to by it with the speed of 10 minus 12 power second-time
Thousands of watts of surge power, the voltage clamp of two interpolars is set effectively to protect the precision member in electronic circuit in a predetermined value
Device, from the damage of various surge pulses.It can be presented in the embodiment of the present application using TVS pipe under instant high-voltage extremely low
The characteristic of impedance is released to electrostatic pulse electric current, reaches the infringement for protecting back-end circuit to be impacted from instantaneous large-current.
Because inductance has transient state inhibitory action to electric current.Therefore, inductance 222 is used to suppress electrostatic induced current.
Wherein, electrostatic discharge protective circuit 22 is made up of static leakage circuit 221 and the connection of inductance 222.Static leakage circuit 221
Position relationship between inductance 222 can have it is a variety of, such as, static leakage circuit 221 can before inductance 222, or
Static leakage circuit 221 can be after inductance 222.
In one embodiment, front end interface 21, electrostatic discharge protective circuit can be included with reference to figure 6, electrostatic protection apparatus 200
22 and back-end circuit 23.Wherein, electrostatic discharge protective circuit 22 includes static leakage circuit 221 and inductance 222.
Front end interface 21, inductance 222 and back-end circuit 23 are sequentially connected, static leakage circuit 221 be located at inductance 222 it
Before, one end of static leakage circuit 221 is connected with front end interface 21 and inductance 222 simultaneously, the other end of static leakage circuit 221
It can be grounded.
Static leakage circuit 221, the electrostatic induced current for being transmitted to front end interface 21 are released, and obtain residual statics electricity
Stream, and residual statics electric current is transferred to inductance 222.
Inductance 222, for suppressing to residual statics electric current, to alleviate wink of the electrostatic pulse electric current to back-end circuit 23
Between impact, so as to have the function that strengthen electrostatic protection.
, can be by static leakage circuit 221 (such as TVS pipe) in moment when static leakage circuit 221 is before inductance 222
Rapidly static electricity discharge electric current under high pressure, then, can be suppressed, i.e. inductance 222 by inductance 222 to residual statics electric current
Moment impact of the electrostatic pulse electric current to back-end circuit 23 can be alleviated, so as to have the function that to strengthen electrostatic protection.
In one embodiment, front end interface 21, electrostatic discharge protective circuit can be included with reference to figure 7, electrostatic protection apparatus 200
22 and back-end circuit 23.Wherein, electrostatic discharge protective circuit 22 includes static leakage circuit 221 and inductance 222.
Front end interface 21, inductance 222 and back-end circuit 23 are sequentially connected, static leakage circuit 221 be located at inductance 222 it
Afterwards, one end of static leakage circuit 221 is connected with inductance 222 and back-end circuit 23 simultaneously, the other end of static leakage circuit 221
It can be grounded.
Inductance 222, the electrostatic induced current for being transmitted to front end interface 21 suppress, and obtain residual statics electric current, and will
Residual statics electric current is transferred to static leakage circuit 221.
Static leakage circuit 221, for being released to residual statics electric current.
In one embodiment, front end interface 21, Transient Suppression Diode can be included with reference to figure 8, electrostatic protection apparatus 200
221a, inductance 222 and back-end circuit 23.
Wherein, front end interface 21, inductance 222, back-end circuit 23 are sequentially connected.That is, one end of inductance 222 and front end interface
21 connections, the other end of inductance 222 are connected with back-end circuit 23.
Transient Suppression Diode 221a one end is connected with front end interface 21, inductance 222 respectively, Transient Suppression Diode
221a other end ground connection.
When front end interface 21 introduces electrostatic induced current, Transient Suppression Diode 221a can release to electrostatic induced current,
Residual statics electric current after transient diode 221a releases can be transferred to inductance 222, and inductance 222 can be to residual statics electric current
Suppressed, to protect back-end circuit 23 from the moment impact of electrostatic induced current, the electrostatic of back-end circuit 23 is prevented so as to strengthen
Shield acts on.
Electrostatic pulse electric current can be released and suppressed using the electrostatic protection apparatus 200 shown in Fig. 8, enhance electricity
The electrostatic leakage and rejection ability of sub- equipment, impact and interference of the electrostatic induced current to back-end circuit 203 can be prevented, can be electricity
Sub- equipment provides effective electrostatic protection so that the stability of electronic equipment is stronger.
In one embodiment, the self-resonant frequency of inductance 222 is in the effective frequency section of electrostatic energy, and with it is rear
The working frequency of terminal circuit is different.That is, inductance 222 can not influence the normal work of back-end circuit 23.
In one embodiment, with reference to figure 9, electrostatic protection apparatus 200 can include front end interface 21, inductance 222, transient state suppression
Diode 221a processed and back-end circuit 23.
Wherein, front end interface 21, inductance 222, back-end circuit 23 are sequentially connected.That is, one end of inductance 222 and front end interface
21 connections, the other end of inductance 222 are connected with back-end circuit 23.
Transient Suppression Diode 221a one end is connected with inductance 222, back-end circuit 23 respectively, Transient Suppression Diode
221a other end ground connection.
When front end interface 21 introduces electrostatic induced current, inductance 222 can suppress to electrostatic induced current, by inductance 222
Residual statics electric current after suppression can be transferred to Transient Suppression Diode 221a, and Transient Suppression Diode 221a can be to remaining quiet
Electric current is released, to protect back-end circuit 23 from the impact of electrostatic induced current, so as to strengthen the electrostatic to back-end circuit 23
Protective action.
Electrostatic pulse electric current can be suppressed and be released using the electrostatic protection apparatus 200 shown in Fig. 9, enhance electricity
The electrostatic of sub- equipment suppresses and relieving capacity, can prevent impact of the electrostatic induced current to back-end circuit 203, can be electronic equipment
There is provided effective electrostatic protection so that the stability of electronic equipment is stronger.
The embodiment of the present application also provides a kind of radio circuit.Referring to Fig. 10, radio circuit 300 includes RF transceiver
71st, power amplification unit 72, filter unit 73, radio frequency switching circuit chip 74, antenna 107, and Transient Suppression Diode
221a and inductance 222.Wherein, power amplification unit 72, filter unit 73, radio frequency switching circuit chip 74, inductance 222 and day
Line 107 is sequentially connected.Transient Suppression Diode 221a one end is connected with inductance 222 and antenna 107 simultaneously, and transient state suppresses two poles
Pipe 221a other end ground connection.
RF transceiver 71 has emission port TX and receiving port RX.Emission port TX be used for launch radiofrequency signal (
Row signal), receiving port RX is used to receive radiofrequency signal (downstream signal).Emission port TX and the power of RF transceiver 71 are put
Big unit 72 is connected, and receiving port RX is connected with filter unit 73.
Power amplification unit 72 is used to be amplified the upward signal that RF transceiver 71 is launched, and will be upper after amplification
Row signal is sent to filter unit 73.
Filter unit 73 is used to be filtered the upward signal that RF transceiver 71 is launched, and by filtered up letter
Number it is sent to antenna 107.Filter unit 73 is additionally operable to be filtered the downstream signal that antenna 107 receives, and will be filtered
Downstream signal is sent to RF transceiver 71.
Radio frequency switching circuit chip 74 is used for the communications band being selectively turned between RF transceiver 71 and antenna 107.
Radio frequency switching circuit chip can include first switch, second switch, third switch, the first combiner and second
Combiner, the first switch, second switch, third switch can export high-frequency signal, intermediate-freuqncy signal, low frequency signal respectively；
The first switch, second switch are alternative to connect first combiner, to realize high-frequency signal and intermediate-freuqncy signal
Carrier aggregation；
The first switch, alternative connection second combiner of the 3rd switch, to realize high-frequency signal and low frequency signal
Carrier aggregation；
The second switch, alternative connection second combiner of the 3rd switch, to realize intermediate-freuqncy signal and low frequency signal
Carrier aggregation；
The first switch, second switch are alternative to connect first combiner, and the 3rd switch, first combining
Device is alternative to connect second combiner, to realize high-frequency signal, intermediate-freuqncy signal, low frequency signal carrier aggregation.
The detailed construction and function of radio frequency switching circuit chip 74 will hereinafter be described.
Antenna 107 is used to the upward signal that RF transceiver 71 is sent being transmitted into the external world, or receives radio frequency from the external world
Signal, and the downstream signal received is sent to RF transceiver 71.
Because antenna 107 is located at the outside of housing 104, therefore the position such as the finger of user or palm can touch antenna
107, cause antenna 107 to be readily incorporated electrostatic.
When antenna 107 introduces electrostatic induced current, Transient Suppression Diode 221a can release to electrostatic induced current, pass through
Residual statics electric current after transient diode 221a releases can be transferred to inductance 222, and inductance 222 can be carried out to residual statics electric current
Suppress, to protect the RF transceiver 71 of the radio circuit 300 of rear end, power amplification unit 72, filter unit 73, radio circuit
The grade device of switch chip 74 from electrostatic induced current moment impact, so as to strengthen to radio circuit 300 electrostatic protection effect.
Electrostatic pulse electric current can be released and be suppressed in the present embodiment, enhance electronic equipment electrostatic leakage and
Rejection ability, impact and interference of the electrostatic induced current to radio circuit can be prevented, effective electrostatic can be provided for electronic equipment
Protection so that the stability of electronic equipment is stronger.
In certain embodiments, Figure 11 is referred to, Figure 11 is the structural representation of radio circuit 300.Wherein, radio-frequency receiving-transmitting
Device 71 includes 9 radio-frequency transmissions ports a1, a2, a3, a4, a5, a6, a7, a8, a9, and 9 radio frequency reception port b1, b2,
b3、b4、b5、b6、b7、b8、b9。
Wherein, a1, a2, a3 are high-frequency emission port, for launch high frequency radio signals (for example, band7, band40,
The radiofrequency signal of the frequency ranges such as band41).B1, b2, b3 are high-frequency reception port, for receiving high frequency radio signals.a4、a5、a6
For intermediate frequency emission port, for emission medium-frequency radiofrequency signal (for example, radiofrequency signal of the frequency range such as band1, band2, band3).
B4, b5, b6 are medium frequency reception port, for receiving intermediate frequency radiofrequency signal.A7, a8, a9 are low frequencies port, low for launching
Frequency radiofrequency signal (for example, radiofrequency signal of the frequency range such as band8, band12, band20).B7, b8, b9 are low frequency reception port,
For receiving low frequency radio frequency signal.
It should be noted that above-described embodiment is only with the high frequency port of RF transceiver 71, intermediate frequency port, low frequency port point
It Bao Kuo not illustrated exemplified by 3 radio-frequency transmissions ports and 3 radio frequency reception ports.In some other embodiment, front end
Mouth, intermediate frequency port, low frequency port can also include the radio-frequency transmissions port and radio frequency reception port of other quantity respectively.It need to only expire
Each included radio-frequency transmissions port is identical with the quantity of radio frequency reception port for sufficient high frequency port, intermediate frequency port, low frequency port
And more than 1.
Power amplification unit 72 includes 9 amplifiers 721,722,723,724,725,726,727,728,729.Wherein,
Amplifier 721,722,723,724,725,726,727,728,729 respectively the radio-frequency transmissions port a1 with RF transceiver 71,
A2, a3, a4, a5, a6, a7, a8, a9 are connected.
Filter unit 73 includes 9 duplexers 731,732,733,734,735,736,737,738,739.Wherein, it is duplexing
Device 731,732,733,734,735,736,737,738,739 respectively with amplifier 721,722,723,724,725,726,727,
728th, 729 connection.Also, duplexer 731,732,733,734,735,736,737,738,739 respectively with RF transceiver 71
Radio frequency reception port b1, b2, b3, b4, b5, b6, b7, b8, b9 connection.
Radio frequency switching circuit chip 74 includes first switch 741, the switch of second switch the 742, the 3rd 743, switch module 746
And first combiner 744, the second combiner 745.
Wherein, first switch 741, the output end of second switch 742 are connected to switch module 746.3rd switch 743 it is defeated
Go out the first input end that end is connected to the second combiner 745.
First switch 741, the switch of second switch the 742, the 3rd 743 are single pole multiple throw.For example, first switch 741
Including 3 sub- input port c1, c2, c3, second switch 742 includes 3 sub- input port c4, c5, c6, the bag of the 3rd switch 743
Include 3 sub- input port c7, c8, c9.Wherein, sub- input port c1, c2, c3, c4, c5, c6, c7, c8, c9 respectively with duplexer
731st, 732,733,734,735,736,737,738,739 connection.
Switch module 746 has 3 inputs P1, P2, P3 and 3 output ends Q1, Q2, Q3.Wherein, input P1 with
The output end connection of switch 741.Input P2 is connected with the output end of switch 742.Input P3 is defeated with the first combiner 744
Go out end connection.Output end Q1 is connected with the first input end of combiner 744.Output end Q2 and combiner 744 the second input
Connection.Output end Q3 is connected with the second input of the second combiner 745.
Wherein, the first combiner 744, the second combiner 745 are all dual-frequency channel merger.The output end of second combiner 745
It is connected to inductance 222.Inductance 222 is connected to antenna 107.
Transient Suppression Diode 221a one end is connected to inductance 222 and antenna 107, Transient Suppression Diode 221a simultaneously
The other end ground connection.
Switch module 746 includes switch K1, K2, K3, K4, K5.Wherein, it is single-pole single-throw(SPST to switch K1, K2, K3, K4, K5
Switch.
Switch K1 input and output end is respectively connecting to the input P1 and output end Q1 of switch module 746.Switch
K1 can be switched on or switched off input P1 and output end Q1.
Switch K2 input and output end is respectively connecting to the input P2 and output end Q2 of switch module 746.Switch
K2 can be switched on or switched off input P2 and output end Q2.
Switch K3 input and output end is respectively connecting to the input P2 and output end Q3 of switch module 746.Switch
K3 can be switched on or switched off input P2 and output end Q3.
Switch K4 input and output end is respectively connecting to the input P1 and output end Q3 of switch module 746.Switch
K4 can be switched on or switched off input P1 and output end Q3.
Switch K5 input and output end is respectively connecting to the input P3 and output end Q3 of switch module 746.Switch
K5 can be switched on or switched off input P3 and output end Q3.
In certain embodiments, sub- input port c1, c2, c3 can connect with the high frequency port in RF transceiver 21 respectively
Connecing, sub- input port c4, c5, c6 can be connected with the intermediate frequency port in RF transceiver 21 respectively, sub- input port c7, c8,
C9 can be connected with the low frequency port in RF transceiver 21 respectively.
When switch 741 connect in c1, c2, c3 it is any switch K1 connects P1 and Q1 all the way, switch 742 connect c4, c5,
In c6 it is any all the way, when switch K2 connects P2 and Q2, combiner 744 can realize that high-frequency signal gathers with intermediate-freuqncy signal carrier wave
Close.
Further, when switch K5 connects P3 and Q3, switch 743 connect in c7, c8, c9 it is any all the way when, combiner
745 can realize the carrier aggregation of high-frequency signal, intermediate-freuqncy signal, low frequency signal.
When switch 741 connect in c1, c2, c3 it is any switch K4 connects P1 and Q3 all the way, switch 742 disconnects, switch
743 connect in c7, c8, c9 it is any all the way when, combiner 745 can realize the carrier aggregation of high-frequency signal and low frequency signal.
When switch 741 disconnects, switch 742 connect in c4, c5, c6 it is any all the way, switch K3 connects P2 and Q3, switch
743 connect in c7, c8, c9 it is any all the way when, combiner 745 can realize intermediate-freuqncy signal and the carrier aggregation of low frequency signal.
In the embodiment of the present application, radio frequency switching circuit chip 74 can control high frequency port and the intermediate frequency of RF transceiver 71
The first combiner 744 is connected in port, to realize high-frequency signal and intermediate-freuqncy signal carrier aggregation；RF transceiver 71 can be controlled
High frequency port, intermediate frequency port connect the first combiner 744, while the low frequency port of the first combiner 744, RF transceiver 71 connects
Logical second combiner 745, to realize the carrier aggregation of high-frequency signal, intermediate-freuqncy signal, low frequency signal；Radio-frequency receiving-transmitting can also be controlled
The second combiner 745 is connected in the high frequency port of device 71 with low frequency port, to realize high-frequency signal and low frequency signal carrier aggregation；Can
To control the intermediate frequency port of RF transceiver 71 to connect the second combiner 745 with low frequency port, to realize intermediate-freuqncy signal and low frequency
Signal carrier polymerize.Radio frequency switching circuit chip 74 can control the radiofrequency signal of different frequency range to carry out carrier aggregation, so as to
The diversity of carrier aggregation is carried out to improve electronic equipment 100 to radiofrequency signal.
Because antenna 107 is located at the outside of housing 104, therefore the position such as the finger of user or palm can touch antenna
107, cause antenna 107 to be readily incorporated electrostatic.
When antenna 107 introduces electrostatic induced current, Transient Suppression Diode 221a can release to electrostatic induced current, pass through
Residual statics electric current after transient diode 221a releases can be transferred to inductance 222, and inductance 222 can be carried out to residual statics electric current
Suppress, to protect the RF transceiver 71 of the radio circuit 300 of rear end, power amplification unit 72, filter unit 73, radio circuit
The grade device of switch chip 74 from electrostatic induced current moment impact, so as to strengthen to radio circuit 300 electrostatic protection effect.
Electrostatic pulse electric current can be released and be suppressed in the present embodiment, enhance electronic equipment electrostatic leakage and
Rejection ability, impact and interference of the electrostatic induced current to radio circuit can be prevented, effective electrostatic can be provided for electronic equipment
Protection so that the stability of electronic equipment is stronger.
The embodiment of the present application also provides a kind of electronic equipment, including screen, housing and electrostatic protection apparatus, screen and
Electrostatic protection apparatus is arranged on enclosure interior, and electrostatic protection apparatus is any electrostatic protection apparatus that the embodiment of the present application provides
200。
With reference to figure 12, the another structural representation for the electronic equipment 100 that Figure 10 the embodiment of the present application provides.Electronic equipment
100 include antenna assembly 10, memory 20, display unit 30, power supply 40, processor 50 and sensor assembly 60.This area
Technical staff is appreciated that the structure of the electronic equipment 100 shown in Figure 12 does not form the restriction to electronic equipment 100.Electricity
Sub- equipment 100 can be included than illustrating more or less parts, either combine some parts or different parts arrangement.
Wherein, antenna assembly 10 can pass through wireless network and the network equipment (for example, server) or other electronic equipments
(for example, smart mobile phone) communicates, completion and the information transmit-receive between the network equipment or other electronic equipments.Wherein, antenna assembly
10 can include the electrostatic protection apparatus 200 of any offer of the embodiment of the present application.
Memory 20 can be used for storage application program and data.Include in the application program that memory 20 stores executable
Program code.Application program can form various functions module.Processor 50 is stored in the application journey of memory 20 by operation
Sequence, so as to perform various function application and data processing.
Display unit 30 can be used for display by user is input to the information of electronic equipment 100 or is supplied to user information with
And the various graphical user interface of electronic equipment 100.These graphical user interface can by figure, text, icon, video and its
It is combined to form.Display unit 30 may include display panel.
The all parts that power supply 40 is used for electron equipment 100 are powered.In certain embodiments, power supply 40 can pass through electricity
Management system and processor 50 are logically contiguous, so as to realize management charging, electric discharge and power consumption pipe by power-supply management system
The functions such as reason.
Processor 50 is the control centre of electronic equipment 100.Processor 50 is entirely electric using various interfaces and connection
The various pieces of sub- equipment 100, by running or performing the application program being stored in memory 20, and call and be stored in
Data in reservoir 20, the various functions and processing data of electronic equipment 100 are performed, so as to carry out entirety to electronic equipment 100
Monitoring.
Sensor assembly 60 is used to sense outer signals, such as optical signal, sensor 60 can include light proximity transducer,
Ambient light sensor etc..
In addition, electronic equipment 100 can also include camera module, bluetooth module etc., will not be repeated here.
It when it is implemented, above modules can be realized as independent entity, can also be combined, be made
Realized for same or several entities, the specific implementation of above modules can be found in embodiment of the method above, herein not
Repeat again.
A kind of electrostatic protection apparatus and electronic equipment provided above the embodiment of the present application is described in detail, and its is each
Functional module can be integrated in a process chip or modules are individually physically present, can also be two or two
It is individual to be integrated in upper module in a module.Above-mentioned integrated module can both be realized in the form of hardware, can also use
The form of software function module is realized.Specific case used herein is explained the principle and embodiment of the application
State, the explanation of above example is only intended to help and understands the present processes and its core concept；Meanwhile for this area
Technical staff, according to the thought of the application, there will be changes in specific embodiments and applications, in summary,
This specification content should not be construed as the limitation to the application.
Claims (13)
- A kind of 1. electrostatic protection apparatus, it is characterised in that including：Front end interface, electrostatic discharge protective circuit and back-end circuit；The electrostatic discharge protective circuit is between the front end interface and the back-end circuit, one end of the electrostatic discharge protective circuit It is connected with the front end interface, the other end is connected with the back-end circuit；The electrostatic discharge protective circuit is made up of static leakage circuit and inductance connection, for the electrostatic transmitted to the front end interface Electric current is released.
- 2. electrostatic protection apparatus as claimed in claim 1, it is characterised in that the front end interface, the inductance and described Back-end circuit is sequentially connected, and one end of the static leakage circuit is described simultaneously with the front end interface and the inductance connection The other end ground connection of static leakage circuit；The static leakage circuit, the electrostatic induced current for being transmitted to the front end interface are released, and obtain residual statics electricity Stream, and the residual statics electric current is transferred to the inductance；The inductance, for suppressing to the residual statics electric current, to protect the back-end circuit.
- 3. electrostatic protection apparatus as claimed in claim 1, it is characterised in that the front end interface, the inductance and described Back-end circuit is sequentially connected, and one end of the static leakage circuit is connected with the inductance and the back-end circuit simultaneously, described The other end ground connection of static leakage circuit；The inductance, the electrostatic induced current for being transmitted to the front end interface suppress, and obtain residual statics electric current, and by institute State residual statics electric current and be transferred to the static leakage circuit；The static leakage circuit, for being released to the residual statics electric current.
- 4. the electrostatic protection apparatus as described in claim any one of 1-3, it is characterised in that at the self-resonant frequency of the inductance In the effective frequency section of electrostatic energy, and it is different from the working frequency of the back-end circuit.
- 5. electrostatic protection apparatus as claimed in claim 2, it is characterised in that the static leakage circuit includes transient state and suppresses two Pole pipe, one end of the Transient Suppression Diode suppress two poles with the front end interface, the inductance connection, the transient state simultaneously The other end ground connection of pipe.
- 6. electrostatic protection apparatus as claimed in claim 3, it is characterised in that the static leakage circuit includes transient state and suppresses two Pole pipe, one end of the Transient Suppression Diode are connected with the inductance, the back-end circuit simultaneously, and the transient state suppresses two poles The other end ground connection of pipe.
- 7. the electrostatic protection apparatus as described in claim 5 or 6, it is characterised in that the Transient Suppression Diode is ambipolar Transient Suppression Diode.
- 8. the electrostatic protection apparatus as described in claim any one of 1-3, it is characterised in that the back-end circuit is included at radio frequency Manage circuit.
- 9. the electrostatic protection apparatus as described in claim any one of 1-3, it is characterised in that the front end interface includes：Antenna, COBBAIF or USB.
- A kind of 10. radio circuit, it is characterised in that including RF transceiver, radio frequency switching circuit chip, electrostatic discharge protective circuit with And antenna；The RF transceiver, radio frequency switching circuit chip, electrostatic discharge protective circuit and antenna are sequentially connected；The electrostatic Protection circuit is made up of static leakage circuit and inductance connection, for being released to the electrostatic induced current of the antenna transmission；Institute State the communications band that radio frequency switching circuit chip is used to be selectively turned between the RF transceiver and the antenna.
- 11. radio circuit as claimed in claim 10, it is characterised in that the static leakage circuit is that transient state suppresses two poles Pipe, the RF transceiver, radio frequency switching circuit chip, inductance and antenna are sequentially connected, the Transient Suppression Diode One end is connected to the inductance and the antenna, other end ground connection.
- 12. radio circuit as claimed in claim 10, it is characterised in that the radio frequency switching circuit chip is opened including first Pass, second switch, the 3rd switch, the first combiner and the second combiner, the first switch, second switch, third switch High-frequency signal, intermediate-freuqncy signal, low frequency signal can be exported respectively；The first switch, second switch are alternative to connect first combiner, to realize high-frequency signal and intermediate-freuqncy signal Carrier aggregation；Alternative connection second combiner of the first switch, the 3rd switch, to realize high-frequency signal and low frequency signal Carrier aggregation；Alternative connection second combiner of the second switch, the 3rd switch, to realize intermediate-freuqncy signal and low frequency signal Carrier aggregation；The first switch, second switch are alternative to connect first combiner, and the 3rd switch, described first Combiner is alternative to connect second combiner, to realize high-frequency signal, intermediate-freuqncy signal, low frequency signal carrier aggregation.
- 13. a kind of electronic equipment, it is characterised in that including screen, housing and electrostatic protection apparatus, the screen and described Electrostatic protection apparatus is arranged on the enclosure interior, and the electrostatic protection apparatus is quiet as described in claim any one of 1-9 Electric protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775701.6A CN107565529A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus, radio circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775701.6A CN107565529A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus, radio circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107565529A true CN107565529A (en) | 2018-01-09 |
Family
ID=60978603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710775701.6A Pending CN107565529A (en) | 2017-08-31 | 2017-08-31 | Electrostatic protection apparatus, radio circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107565529A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110956084A (en) * | 2019-10-21 | 2020-04-03 | Oppo广东移动通信有限公司 | Drive circuit, control method, electronic device, apparatus, and storage medium |
| CN114640336A (en) * | 2022-05-09 | 2022-06-17 | 荣耀终端有限公司 | Interface circuit and electronic device |
| CN116131884A (en) * | 2023-02-20 | 2023-05-16 | 北京振中电子技术有限公司 | Multi-antenna Bluetooth module |
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Application publication date: 20180109 |