CN107959737A - Anti-jamming circuit structure and mobile terminal - Google Patents
Anti-jamming circuit structure and mobile terminal Download PDFInfo
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- CN107959737A CN107959737A CN201711181577.7A CN201711181577A CN107959737A CN 107959737 A CN107959737 A CN 107959737A CN 201711181577 A CN201711181577 A CN 201711181577A CN 107959737 A CN107959737 A CN 107959737A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of anti-jamming circuit structure and mobile terminal.Anti-jamming circuit structure includes antenna, processor and proximity sensor, antenna is used for outside radiation signal, processor is connected with proximity sensor by I2C buses, anti-jamming circuit structure further includes filter module, filter module is connected in I2C buses, and filter module is used to filter out interference of the radiation signal to I2C buses.Interference of the radiation signal that filter module in anti-jamming circuit structure is used to filter out antenna to I2C buses so that the signal transmission between processor and proximity sensor is relatively stablized, and the functional reliability of proximity sensor is higher.
Description
Technical field
The present invention relates to technical field of electronic equipment, more specifically, is related to a kind of anti-jamming circuit structure and movement eventually
End.
Background technology
Mobile phone develops towards narrow frame, large-size screen monitors accounting direction at present, and continuous with screen accounting expands, the effector of mobile phone
Part is arranged more close, such as proximity sensor and antenna, and proximity sensor may be arranged in the empty regions of antenna,
Cause that proximity sensor is easily subject to the interference of aerial radiation and reliability is poor.
The content of the invention
Embodiment of the present invention provides a kind of anti-jamming circuit structure and mobile terminal.
The anti-jamming circuit structure of embodiment of the present invention includes antenna, processor and proximity sensor, and the antenna is used
In outside radiation signal, the processor is connected with the proximity sensor by I2C buses, the anti-jamming circuit knot
Structure further includes filter module, and the filter module is connected in the mistake I2C buses, and the filter module is used to filter out the spoke
Penetrate interference of the signal to the I2C buses.
In some embodiments, the I2C buses include data cable and clock line, and the data cable is used for transmission data
Signal, the clock line are used for transmission clock signal, and the filter module includes data filtering circuit and Clock filter circuits, institute
State data filtering circuit connection on the data line, and for filtering out interference of the radiation signal to the data-signal,
The Clock filter circuits are connected on the clock line, and the clock signal is done for filtering out the radiation signal
Disturb.
In some embodiments, the proximity sensor includes transmitter and receiver, and the transmitter is used to launch
Signal is detected, the receiver is used to receive the detection signal being reflected back toward, and the receiver includes data terminal, described
Data filtering circuit includes data inductance, and on the data line, the data inductance passes through described for the data inductance series connection
Data cable one end is connected with the processor, and the other end is connected with the data terminal.
In some embodiments, the data filtering circuit further includes the data capacitance being connected with the data cable, institute
State data capacitance to be connected between the processor and the data inductance, one end of the data capacitance connects with the data cable
Connect, other end ground connection.
In some embodiments, the data inductance is more than or equal to 15 nanohenrys.
In some embodiments, the proximity sensor includes transmitter and receiver, and the transmitter is used to launch
Signal is detected, the receiver is used to receive the detection signal being reflected back toward, and the receiver includes clock terminal, described
Clock line filter circuit includes clock inductance, and the clock inductance is connected on the clock line, and the clock inductance passes through institute
State clock line one end to be connected with the processor, the other end is connected with the clock terminal.
In some embodiments, the Clock filter circuits further include the clock capacitance being connected with the clock line, institute
State clock capacitance to be connected between the processor and the clock inductance, one end of the clock capacitance connects with the clock line
Connect, other end ground connection.
In some embodiments, the clock inductance is more than or equal to 15 nanohenrys.
In some embodiments, interrupt line is also associated between the processor and the proximity sensor, in described
Broken string is used for transmission interrupt signal, and the filter module is additionally operable to filter out interference of the radiation signal to the interrupt signal.
In some embodiments, the proximity sensor includes transmitter and receiver, and the transmitter is used to launch
Signal is detected, the receiver is used to receive the detection signal being reflected back toward, and the receiver includes interrupting terminal, described
Filter module includes interrupting filter circuit, and the interruption filter circuit includes interrupting inductance, and the interruption inductance is connected on described
In interrupt line, the interruption inductance is connected by described interrupt line one end with the processor, the other end and the interruption terminal
Connection.
The mobile terminal of embodiment of the present invention includes：
Circuit board；With
Anti-jamming circuit structure described in any of the above-described embodiment, the anti-jamming circuit structure are arranged on the circuit
On plate.
In anti-jamming circuit structure and mobile terminal that embodiment of the present invention provides, filter module is used to filter out antenna
Interference of the radiation signal to I2C buses so that the signal transmission between processor and proximity sensor is relatively stablized, proximity sensor
Functional reliability it is higher.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partly will be from following
Description in become obvious, or recognized by the practice of embodiments of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the accompanying drawings below to embodiment by change
Obtain substantially and be readily appreciated that, wherein：
Fig. 1 is the floor map of the mobile terminal of embodiment of the present invention；
Fig. 2 is the perspective exploded view of the mobile terminal of embodiment of the present invention；
Fig. 3 is the module diagram of the anti-jamming circuit structure of embodiment of the present invention；
Fig. 4 is the electrical block diagram of the anti-jamming circuit structure of embodiment of the present invention；
Fig. 5 is the electrical block diagram of the anti-jamming circuit structure of another embodiment of the present invention；
Fig. 6 is the structure diagram of the circuit board of embodiment of the present invention；
Fig. 7 is the floor map of the top layer of the circuit board of embodiment of the present invention；
Fig. 8 is the floor map of the routing layer of the circuit board of embodiment of the present invention；
Fig. 9 is the floor map of the floor file layer of the circuit board of embodiment of the present invention；
Figure 10 is the floor map of the articulamentum of the circuit board of embodiment of the present invention.
Main element symbol description：
Mobile terminal 100, anti-jamming circuit structure 10, antenna 11, proximity sensor 12, transmitter 122, receiver 124,
Power supply terminal VDD, ground terminal GND, transmitter connection terminal LEDA, data terminal SDA, clock terminal SCL, interruption terminal
INT, receiver power supply V1, transmitter power V2, pull-up power supply V3, processor 13, filter module 14, data filtering circuit 141,
Data inductance 1411, data capacitance 1412, Clock filter circuits 142, clock inductance 1421, clock capacitance 1422, interruption filtering
Circuit 143, interrupt inductance 1431, interrupt capacitance 1432, filter capacitor 15, ground capacity 16, I2C buses 17, data cable 171,
Clock line 172, interrupt line 18, pull-up resistor 19, shunt capacitance 1a, circuit board 20, top layer 21, anchor pad 211, intermediate layer
22nd, routing layer 221, connection circuit 2211, connection pad 2212, floor file layer 222, blind zone 2221, articulamentum 223, bottom 23,
Housing 30, front 32, the back side 34, top 36, bottom 38, display screen 40, shrapnel 50.
Embodiment
Embodiments of the present invention are described further below in conjunction with attached drawing.Same or similar label is from beginning in attached drawing
To the same or similar element of expression eventually or there is same or like element.
In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, it is only used for explaining the present invention's
Embodiment, and be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
Please refer to Fig.1 and Fig. 2, the mobile terminal 100 of embodiment of the present invention include anti-jamming circuit structure 10 and circuit
Plate 20.Mobile terminal 100 can be that mobile phone, wrist-watch, head show equipment, laptop, tablet computer etc., embodiment of the present invention
Illustrated so that mobile terminal 100 is mobile phone as an example, it will be understood that the concrete form of mobile terminal 100 can be other.It is mobile
Terminal 100 can also include housing 30, and anti-jamming circuit structure 10 and circuit board 20 are housed in housing 30, and housing 30 can be used
In the protection that waterproof and dustproof, shatter-resistant etc. are provided to anti-jamming circuit structure 10 and circuit board 20.Housing 30 includes opposite front
32 and the back side 34, front 32 can be connected with the back side 34 by top 36 and bottom 38, can be used for setting on front 32 mobile whole
The display screen 40 at end 100.
Incorporated by reference to Fig. 3 and Fig. 4, anti-jamming circuit structure 10 includes antenna 11, proximity sensor 12, processor 13, filtering
Module 14 and filter capacitor 15.Anti-jamming circuit structure 10 is arranged on circuit board 20.
Referring to Fig. 2, the species of antenna 11 can be primary antenna, diversity antenna, wifi antennas, NFC antenna etc., antenna 11
It is connected on circuit board 20, antenna 11 outwards radiation signal or can receive extraneous radiation signal so that mobile terminal
100 communication with the outside world.Specifically, antenna 11 can be connected with circuit board 20 by shrapnel 50, one end of shrapnel 50 is fixedly connected
On circuit board 20, the other end can be contacted with feed point with antenna 11.In embodiments of the present invention, antenna 11 can be fixed on housing
On 30, specifically, antenna 11 can be fixed on the top 36 of housing 30 to reduce the other parts of mobile terminal 100 to antenna 11
Radiation signal barrier effect.
Please refer to Fig.1 and Fig. 2, proximity sensor 12 include transmitter 122 and receiver 124.Proximity sensor 12 also may be used
To set close to top 36, so that proximity sensor 12 is arranged to compacter with antenna 11, saves and can be used for arranging display screen 40
Space, improve mobile terminal 100 screen accounting.Proximity sensor 12 can be used for the front 32 for judging housing 30 and extraneous obstacle
The distance between thing, for example, when proximity sensor 12 detect the distance be less than it is default apart from when, judge that user may be
Receive calls, and the screen that puts out for triggering mobile terminal 100 operates.Specifically, transmitter 122 can be from the outwards transmitting detection of front 32
Ripple, detection ripple are reflected in communication process by extraneous barrier, and receiver 124 receives the detection ripple being reflected back by the external world, goes forward side by side
The power for the detection ripple that one step is reflected back toward by processing, judges the distance between front 32 and extraneous barrier.It is appreciated that
Transmitter 122 is connected with receiver 124 so that receiver 124 easily obtains the information of the detection ripple of the transmitting of transmitter 122.Such as
Receiver 124 can obtain the temporal information of the transmitting detection ripple of transmitter 122, and receiver 124 can only be launched in transmitter 122
Start the detection ripple that detection is reflected back toward after detection ripple again；Receiver 124 can obtain the strong of the detection ripple of the transmitting of transmitter 122
Information is spent, with by compared with the strength information for the detection ripple being reflected back toward.Incorporated by reference to Fig. 4, one end of transmitter 122 with
Receiver 124 connects, and the other end is connected with transmitter power V2, and transmitter power V2 is used to provide electric energy to transmitter 122, compared with
Goodly, anti-jamming circuit structure 10 further includes shunt capacitance 1a, and one end of shunt capacitance 1a is connected to transmitter 122 and transmitter
Between power supply V2, other end ground connection, shunt capacitance 1a can be used for filtering out the High-frequency Interference in transmitter power V2.
Transmitter 122 can be infrared transmitter 122, for outwards launching infrared light；Transmitter 122 can also be super
Pinger 122, for outwards launching ultrasonic wave；Transmitter 122 can also be laser emitter 122, for outwards launching
Laser.Corresponding, receiver 124 can also be infrared light receiver, ultrasonic receiver, laser pickoff etc..The present invention with
For transmitter 122 to be illustrated exemplified by infrared LED lamp, infrared LED lamp can outwards launch infrared light under the driving of electric energy, receive
Device 124 is infrared light receiver.
Fig. 3 and Fig. 4 are referred to, receiver 124 includes power supply terminal VDD, ground terminal GND, transmitter connection terminal
LEDA, data terminal SDA, clock terminal SCL and interruption terminal INT.Power supply terminal VDD is used for the receiver power supply for connecting outside
V1, receiver power supply V1 are used to provide electric energy to receiver 124, it is preferred that can be in receiver power supply V1 and power supply terminal VDD
Between connect ground capacity 16, one end of ground capacity 16 is connected between receiver power supply V1 and power supply terminal VDD, the other end
Ground connection, ground capacity 16 can be used for filtering out the High-frequency Interference in receiver power supply V1.Ground terminal GND is used for receiver 124
It is connected to ground, for defining low level and can be used for the influence for preventing extraneous static.Transmitter connection terminal LEDA be used for
Transmitter 122 connects, and the information for the detection ripple that transmitter 122 is launched can be transferred to reception by transmitter connection terminal LEDA
Device 124.Data terminal SDA can be used for connecting receiver 124 and processor 13, with realize receiver 124 and processor 13 it
Between data signal transmission.Clock terminal SCL can be used for connecting receiver 124 and processor 13, with realize receiver 124 with
Clock signal transmission between processor 13.Interrupt terminal INT to can be used for connecting receiver 124 and processor 13, to realize
Interrupt signal transmission between receiver 124 and processor 13.
Fig. 3 and Fig. 4 are referred to, processor 13 is connected with proximity sensor 12.Processor 13 can be with 124 communication link of receiver
Connect, to receive the strength information of the detection ripple being reflected back obtained by receiver 124, and further handle the strength information to obtain
To the front 32 of housing 30 and the distance of extraneous barrier.Specifically, processor 13 and the receiver 124 of proximity sensor 12 connect
Connect, more specifically, processor 13 is connected with receiver 124 by I2C buses 17 and interrupt line 18.I2C buses 17 include data
Line 171 and clock line 172.Data cable 171 connects data terminal SDA and processor 13, and is used for transmission data-signal；Clock line
172 connection clock terminals and processor 13, and it is used for transmission clock signal.18 disconnecting terminal INT of interrupt line and processor
13, and it is used for transmission interrupt signal.
Refer to Fig. 2-Fig. 4, it will be understood that in order to enable antenna 11 sets compacter with proximity sensor 12, approach
Sensor 12 may be located in the empty regions of antenna 11, and in the empty regions of antenna 11, proximity sensor 12 is easy
It is subject to disturbing for the radiation signal of the transmitting of antenna 11.By taking I2C buses 17 are interfered as an example, radiation signal may change I2C
The waveform of the signal transmitted in bus 17, causes processor 13 to receive the information of mistake, it is also possible to can cause processor 13
Correlation module crashes, and the function element for making to connect in whole I2C buses 17 all fails.Therefore, it is necessary in anti-jamming circuit structure
Filter module 14 is designed in 10.Interference of the radiation signal that filter module 14 can be used for filtering out the transmitting of antenna 11 to I2C buses 17,
Filter module 14 can be additionally used in the interference for filtering out the interrupt signal that the radiation signal that antenna 11 is launched transmits interrupt line 18.Specifically
Ground, filter module 14 include data filtering circuit 141, Clock filter circuits 142 and interrupt filter circuit 143.
Data filtering circuit 141 is connected on data cable 171, and for filtering out interference of the radiation signal to data-signal.
Data filtering circuit 141 includes data inductance 1411, and data inductance 1411 is connected on data cable 171.Data inductance 1411
One end is connected by data cable 171 with processor 13, and the other end is connected with data terminal SDA.When the radiation signal logarithm of high frequency
Interference is produced according to line 171 so that when high frequency mutation current is produced in data cable 171, data inductance 1411 can be mutated high frequency
Electric current produces inhibitory action, to filter out the interference that radiation signal produces data-signal.Data inductance 1411 can be more than or wait
In 15 nanohenrys, such as 15 nanohenrys, 100 nanohenrys, 177 nanohenrys, 2000 nanohenrys etc., so that data inductance 1411 is to high frequency mutation current
Inhibition it is preferable.Referring to Fig. 5, in one example, data filtering circuit 141 can also include data capacitance 1412,
Data capacitance 1412 is connected with data cable 171, specifically, data capacitance 1412 be connected to processor 13 and data inductance 1411 it
Between, one end of data capacitance 1412 is connected with data cable 171, other end ground connection.Data capacitance 1412 can be used for improving from processing
Device 13 is sent to the waveform quality of the data-signal of data terminal SDA.Certainly, data filtering circuit 141 can not also include number
According to capacitance 1412.
Clock filter circuits 142 are connected on clock line 172, and for filtering out interference of the radiation signal to clock signal.
Clock filter circuits 142 include clock inductance 1421, and clock inductance 1421 is connected on clock line 172.Clock inductance 1421
One end is connected by clock line 172 with processor 13, and the other end is connected with clock terminal SCL.When the radiation signal pair of high frequency
Clock line 172 produces interference so that when high frequency mutation current is produced in clock line 172, clock inductance 1421 can be mutated high frequency
Electric current produces inhibitory action, to filter out the interference that radiation signal produces clock signal.Clock inductance 1421 can be more than or wait
In 15 nanohenrys, such as 15 nanohenrys, 100 nanohenrys, 500 nanohenrys, 1000 nanohenrys etc., so that clock inductance 1421 is to high frequency mutation current
Inhibition it is preferable.Referring to Fig. 5, in one example, Clock filter circuits 142 can also include clock capacitance 1422,
Clock capacitance 1422 is connected with clock line 172, specifically, clock capacitance 1422 be connected to processor 13 and clock inductance 1421 it
Between, one end of clock capacitance 1422 is connected with clock line 172, other end ground connection.Clock capacitance 1422 can be used for improving from processing
Device 13 is sent to the waveform quality of the clock signal of clock terminal SCL.Certainly, when Clock filter circuits 142 can not also include
Clock capacitance 1422.
Filter circuit 143 is interrupted to be connected on interrupt line 18, and for filtering out interference of the radiation signal to interrupt signal.In
Disconnected filter circuit 143 includes interrupting inductance 1431, interrupts inductance 1431 and is connected on interrupt line 18.Interrupt one end of inductance 1431
It is connected by interrupt line 18 with processor 13, the other end is connected with interrupting terminal INT.When the radiation signal of high frequency is to interrupt line 18
Produce interference so that when high frequency mutation current is produced in interrupt line 18, high frequency mutation current can be produced by interrupting inductance 1431
Inhibitory action, to filter out the interference that radiation signal produces interrupt signal.15 nanohenrys can be greater than or equal to by interrupting inductance 1431,
Such as 15 nanohenrys, 100 nanohenrys, 600 nanohenrys, 5000 nanohenrys etc., so as to interrupt suppression effect of the inductance 1431 to high frequency mutation current
Fruit is preferable.Referring to Fig. 5, in one example, interrupting filter circuit 143 can also include interrupting capacitance 1432, interrupt capacitance
1432 are connected with interrupt line 18, specifically, interrupt capacitance 1432 and are connected between processor 13 and interruption inductance 1431, middle power-off
One end of appearance 1432 is connected with interrupt line 18, other end ground connection.Interrupting capacitance 1432 can be used for raising to be sent to from processor 13
Interrupt the waveform quality of the interrupt signal of terminal INT.Certainly, interrupting filter circuit 143 can not also include interrupting capacitance 1432.
Referring to Fig. 4, one end of filter capacitor 15 is connected between transmitter 122 and receiver 124, other end ground connection,
Filter capacitor 15 is used to filter out interference of the radiation signal to transmitter 122.When transmitter 122 is interfered, 122 liang of transmitter
The voltage at end can be disturbed, such as can produce Voltage Drop in one end of the close transmitter connection terminal LEDA of transmitter 122,
The electrical potential difference at 122 both ends of transmitter is caused to become larger, the intensity of the detection ripple of transmitting becomes larger, and influences receiver 124 and receive
The detection ripple being reflected back toward intensity, that is, have impact on the accuracy of 12 detecting distance of proximity sensor.Filter capacitor 15
0.1 microfarad can be greater than or equal to, such as can be 0.1 microfarad, 0.15 microfarad, 0.23 microfarad, 0.57 microfarad, 1.2 microfarads etc.,
So that filter capacitor 15 has preferable antijamming capability.
Referring to Fig. 4, anti-jamming circuit structure 10 can also include one or more pull-up resistors 19, pull-up resistor 19
One end is connected with exterior pull-up power supply V3, and the other end is connected to signal transmssion line (data cable 171, clock line 172 or interrupt line
18) on, to provide high level when high level is needed in signal transmssion line.Such as shown in figure 4, connect on interrupt line 18
Pull-up resistor 19 is connected to, one end of pull-up resistor 19, which is connected to, interrupts between inductance 1431 and processor 13, in other end connection
Power supply V3 is drawn, to provide high level when needing high level on interrupt line 18.
Fig. 2 and Fig. 6 are referred to, circuit board 20 includes top layer 21, at least one intermediate layer 22 and bottom 23.Circuit board 20 can
To be multilayer board, it can be used for setting anti-jamming circuit structure 10 on circuit board 20, can be also used for setting on circuit board 20
The function component of mobile terminal 100 is put, function component can be receiver, camera, flash lamp, optical flame detector, fingerprint knowledge
Other module, infrared light compensating lamp, structured light projector etc..
Please refer to Fig.1, Fig. 6 and Fig. 7, top layer 21 is arranged on the function component of top layer 21 close to the front 32 of housing 30
Available for whole from front 32 into movement towards positive 32 transmitting signal (such as receiver outwards launches acoustic signals), or receiving
The signal (such as front camera receives extraneous light signal) at end 100.The transmitter 122 of embodiment of the present invention and reception
Device 124 is connected to top layer 21, and transmitter 122 is used to be used to receive and be hindered by the external world towards the transmitting of front 32 detection signal, receiver 124
The detection signal for hindering thing to be reflected back to front 32.Specifically, anchor pad 211 is could be formed with top layer 21, transmitter 122
Packaging pin can be to pass through anchor pad 211 to pass through top layer 21, and the packaging pin of transmitter 122 is welded on anchor pad
On 211.
Referring to Fig. 6, intermediate layer 22 is arranged between top layer 21 and bottom 23, the quantity in intermediate layer 22 is according to actual demand
Can be three layers, four layers, five layers, six layers, seven layers, any multilayers (two layers or more than two layers) such as ten layers, intermediate layer 22 and top layer
21st, can be connected between different intermediate layers 22 by via, can be with laying-out for each function of transmission in intermediate layer 22
The electric signal of component, can be used for the circuits such as layout data line 171, clock line 172, interrupt line 18.Implement in the present invention
In example, intermediate layer 22 includes routing layer 221, floor file layer 222 and articulamentum 223.What the dotted line frame in wherein Fig. 7-Figure 10 was enclosed
Scope is orthographic projection region of the transmitter 122 on each layer.
Fig. 7 and Fig. 8 are referred to, routing layer 221 is adjacent with top layer 21, and connecting line road 2211, example are equipped with routing layer 221
Such as it is equipped with I2C buses 17, interrupt line 18, power cord, ground wire, the connecting line of transmitter 122 and receiver 124.Cabling
Connection pad 2212, connection pad 2212 and the position correspondence of anchor pad 211 are also formed with layer 221, when transmitter 122
It after packaging pin passes through top layer 21, can be fixedly connected with being connected pad 2212, further increase circuit board 20 to transmitter 122
Fixing intensity.In embodiments of the present invention, the quantity of routing layer 221 is for one layer and adjacent with top layer 21, connects circuit 2211
It is laid on the routing layer 221.Certainly, the quantity of routing layer 221 is can be multilayer, for example, two layers, three layers, four layers, five
Any multilayer (two layers or more than two layers) such as layer.
Fig. 6 and Fig. 9 are referred to, floor file layer 222 is arranged on the side opposite with top layer 21 of routing layer 221, floor file layer 222
Formed with blind zone 2221.Blind zone 2221 is covered by conductive material, and specifically, conductive material can be copper, platinum, gold, silver etc.
Conductive material, blind zone 2221 and the position correspondence of transmitter 122, blind zone 2221 can be used for what shielding was launched by antenna 11
Radiation signal, influences transmitter 122 to avoid radiation signal and works normally.Blind zone 2221 and the position correspondence of transmitter 122,
Can be specifically that orthographic projection of the transmitter 122 on floor file layer 222 is fully contemplated in blind zone 2221 or transmitter
The 122 orthographic projection part on floor file layer 222 is dropped into blind zone 2221.Certainly, blind zone 2221 can also be at the same time with connecing
Receive the position correspondence of device 124, that is to say, that blind zone 2221 can be used for radiation-screening signal at the same time to transmitter 122 and connect
The interference of device 124 is received, orthographic projection of the receiver 124 on floor file layer 222 can be fully contemplated in blind zone 2221, can also
Part is dropped into blind zone 2221.
Fig. 6 and Figure 10 are referred to, articulamentum 223 is arranged on the side opposite with routing layer 221 of floor file layer 222.Connection
The quantity of layer 223 can be multilayer (two layers or more than two layers), such as two layers, three layers, four layers, ten layers etc..Articulamentum 223 with
2221 corresponding region of blind zone is made of insulating materials so that when antenna 11 is connected to bottom 23, it is right to reduce articulamentum 223
The influence of radiation signal is launched and received to antenna 11.
Fig. 2 and Fig. 6 are referred to, close to the back side 34 of housing 30, the function component for being arranged on bottom 23 can use bottom 23
Moved in towards the back side 34 or top emission signal (such as flash lamp outwards launches light signal), or received from the entrance of the back side 34
The signal (such as rear camera receives extraneous light signal) of terminal 100.The antenna 11 of embodiment of the present invention can pass through
Shrapnel 50 is connected to bottom 23, radiation signal at least part quilt that antenna 11 is launched to the direction of transmitter 122 and receiver 124
Blind zone 2221 shields, and to reduce interference of the radiation signal to proximity sensor 12, while proximity sensor 12 is arranged on top layer
21, proximity sensor 12 is distant with antenna 11, and interfering with each other for the two is fainter.
To sum up, in the mobile terminal 100 of embodiment of the present invention, filter module 14 is used for the radiation signal for filtering out antenna 11
Interference to I2C buses 17 so that the signal transmission between processor 13 and proximity sensor 12 is relatively stablized, meanwhile, filtered electrical
Hold 15 to be used to filter out interference of the radiation signal to transmitter 122, the emissive porwer of transmitter 122 is easy to control, proximity sensor
12 functional reliability is higher.
In one embodiment, anti-jamming circuit structure 10 includes above-mentioned antenna 11, processor 13 and close sensing
Device 12.Antenna 11 is used for outside radiation signal, and processor 13 is connected with proximity sensor 12 by I2C buses 17, resists dry
Disturb circuit structure 10 and further include filter module 14, filter module 14 is connected in I2C buses 17, and filter module 14 is used to filter out spoke
Penetrate interference of the signal to I2C buses 17.In present embodiment, the radiation signal that filter module 14 is used to filter out antenna 11 is to I2C
The interference of bus 17 so that the signal transmission between processor 13 and proximity sensor 12 is relatively stablized, the work of proximity sensor 12
It is higher to make reliability.
In another embodiment, anti-jamming circuit structure 10 includes above-mentioned antenna 11 and proximity sensor 12.My god
Line 11 is used for outside radiation signal.Proximity sensor 12 includes the transmitter 122 and receiver 124 interconnected, transmitting
Device 122 is used to launch detection signal, and receiver 124 is used to receive the detection signal being reflected back toward.Anti-jamming circuit structure 10 is also
Including filter capacitor 15, one end of filter capacitor 15 is connected between transmitter 122 and receiver 124, other end ground connection, filtering
Capacitance 15 is used to filter out interference of the radiation signal to transmitter 122.In present embodiment, filter capacitor 15 is used to filter out radiation letter
Interference number to transmitter 122, the emissive porwer of transmitter 122 are easy to control, and the functional reliability of proximity sensor 12 is higher.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means with reference to the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the present invention.
In the present specification, schematic expression of the above terms is not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula combines.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one feature.In the description of the present invention, " multiple " are meant that at least two, such as two,
Three, unless otherwise specifically defined.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, the scope of the present invention are limited by claim and its equivalent.
Claims (11)
1. a kind of anti-jamming circuit structure, it is characterised in that including antenna, processor and proximity sensor, the antenna is used for
Outside radiation signal, the processor are connected with the proximity sensor by I2C buses, the anti-jamming circuit structure
Filter module is further included, the filter module is connected in the mistake I2C buses, and the filter module is used to filter out the radiation
Interference of the signal to the I2C buses.
2. anti-jamming circuit structure according to claim 1, it is characterised in that the I2C buses include data cable and when
Clock line, the data cable are used for transmission data-signal, and the clock line is used for transmission clock signal, and the filter module includes number
According to filter circuit and Clock filter circuits, the data filtering circuit connection on the data line, and is used to filter out the spoke
Interference of the signal to the data-signal is penetrated, the Clock filter circuits are connected on the clock line, and described for filtering out
Interference of the radiation signal to the clock signal.
3. anti-jamming circuit structure according to claim 2, it is characterised in that the proximity sensor include transmitter and
Receiver, the transmitter are used to launch detection signal, and the receiver is used to receive the detection signal being reflected back toward, institute
Stating receiver includes data terminal, and the data filtering circuit includes data inductance, and the data inductance is connected on the data
On line, the data inductance is connected by described data cable one end with the processor, and the other end is connected with the data terminal.
4. anti-jamming circuit structure according to claim 3, it is characterised in that the data filtering circuit further includes and institute
The data capacitance of data cable connection is stated, the data capacitance is connected between the processor and the data inductance, the number
It is connected according to one end of capacitance with the data cable, other end ground connection.
5. anti-jamming circuit structure according to claim 3, it is characterised in that the data inductance is received more than or equal to 15
It is prosperous.
6. anti-jamming circuit structure according to claim 2, it is characterised in that the proximity sensor include transmitter and
Receiver, the transmitter are used to launch detection signal, and the receiver is used to receive the detection signal being reflected back toward, institute
Stating receiver includes clock terminal, and the clock line filter circuit includes clock inductance, when the clock inductance is connected on described
On clock line, the clock inductance is connected by described clock line one end with the processor, and the other end connects with the clock terminal
Connect.
7. anti-jamming circuit structure according to claim 6, it is characterised in that the Clock filter circuits further include and institute
The clock capacitance of clock line connection is stated, the clock capacitance is connected between the processor and the clock inductance, when described
One end of clock capacitance is connected with the clock line, other end ground connection.
8. anti-jamming circuit structure according to claim 6, it is characterised in that the clock inductance is received more than or equal to 15
It is prosperous.
9. anti-jamming circuit structure according to claim 1 or 2, it is characterised in that the processor is with described close to biography
Interrupt line is also associated between sensor, the interrupt line is used for transmission interrupt signal, and the filter module is additionally operable to filter out described
Interference of the radiation signal to the interrupt signal.
10. anti-jamming circuit structure according to claim 9, it is characterised in that the proximity sensor includes transmitter
And receiver, the transmitter are used to launch detection signal, the receiver is used to receive the detection signal being reflected back toward,
The receiver includes interrupting terminal, and the filter module includes interrupting filter circuit, and the interruption filter circuit includes interrupting
Inductance, the interruption inductance are connected in the interrupt line, and the interruption inductance passes through described interrupt line one end and the processing
Device connects, and the other end is connected with the interruption terminal.
A kind of 11. mobile terminal, it is characterised in that including：
Circuit board；With
Anti-jamming circuit structure described in claim 1-10 any one, the anti-jamming circuit structure are arranged on the circuit
On plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181577.7A CN107959737A (en) | 2017-11-23 | 2017-11-23 | Anti-jamming circuit structure and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181577.7A CN107959737A (en) | 2017-11-23 | 2017-11-23 | Anti-jamming circuit structure and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107959737A true CN107959737A (en) | 2018-04-24 |
Family
ID=61961649
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711181577.7A Pending CN107959737A (en) | 2017-11-23 | 2017-11-23 | Anti-jamming circuit structure and mobile terminal |
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| CN (1) | CN107959737A (en) |
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| CN108470012A (en) * | 2018-07-25 | 2018-08-31 | 常州昊云工控科技有限公司 | Bus filter device, system on chip and electrostatic protection method are extended out for electrostatic protection |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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Application publication date: 20180424 |