CN106230446A - A kind of anti-jamming circuit, mobile terminal and the method for suppression harmonic wave interference - Google Patents
A kind of anti-jamming circuit, mobile terminal and the method for suppression harmonic wave interference Download PDFInfo
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- CN106230446A CN106230446A CN201610694630.2A CN201610694630A CN106230446A CN 106230446 A CN106230446 A CN 106230446A CN 201610694630 A CN201610694630 A CN 201610694630A CN 106230446 A CN106230446 A CN 106230446A
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- jamming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
Abstract
The present invention provides a kind of anti-jamming circuit, mobile terminal and the method for suppression harmonic wave interference, by the frequency range residing for detection mobile terminal, obtain fundamental frequency signal, and by fundamental frequency signal after frequency multiplication, amplification and delay disposal, obtain identical with interference signal frequency and amplitude, and the anti-jamming signal of opposite in phase, then the signal of communication of described anti-jamming signal with mobile terminal is together exported, eliminate the interference signal in described signal of communication.So, by the anti-jamming signal contrary with disturbing signal phase will be produced after fundamental frequency signal frequency multiplication, and jointly export with signal of communication to offset described interference signal, and then the Radio frequency interference that the higher hamonic wave that in elimination signal of communication, fundamental frequency signal produces causes, ensure the properly functioning and speech quality of mobile terminal, be conducive to improving Consumer's Experience.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of anti-jamming circuit, mobile terminal and suppression harmonic wave interference
Method.
Background technology
Along with development and the continuous progress of science and technology of society, communication technology has been obtained for significant progress, communication
Device the most more and more comes into the life of people, becomes an indispensable part in people's life.Communicator leads to
Often include phone, mobile terminal, radio station, switch etc..
Along with being on the increase of mobile terminal, and the continuous growth of user's request, user's stability to mobile terminal
Increasingly value with reliability.In current mobile terminal, interference is to affect the system indexs such as wireless network cutting off rate, percent of call completed
One of key factor.It not only have impact on the properly functioning of network, and have impact on speech quality and the experience of user,
It it is the one of the main reasons that user is worried.Therefore, interference problem is always the emphasis of network optimization.
In mobile terminal, clock output signal is usually and is formed by countless sine-wave superimposed, and the interference of mobile terminal,
One of which is exactly co-channel interference, and at co-channel interference Producing reason, a part is precisely due to the clock in mobile terminal is defeated
Go out the signals such as signal, after carrying out frequency multiplication by modes such as Fourier expansions, cause radio frequency to do owing to producing higher hamonic wave
Disturbing, this not only affects the properly functioning of mobile terminal, and have impact on the speech quality of user, is unfavorable for Consumer's Experience.
Summary of the invention
The embodiment of the present invention provide a kind of anti-jamming circuit, mobile terminal and suppression harmonic wave interference method, with solve because of
The signals such as clock output signal, after carrying out frequency multiplication by modes such as Fourier expansions, cause owing to producing higher hamonic wave
Radio frequency interference, not only affects the properly functioning of mobile terminal, and have impact on the speech quality of user, be unfavorable for Consumer's Experience
Problem.
First aspect, embodiments provides a kind of anti-jamming circuit, is applied in a mobile terminal, described movement
Terminal includes that drive circuit and buffer circuit, the outfan of described drive circuit are connected with the input of described buffer circuit, institute
The outfan of the input and described drive circuit of stating anti-jamming circuit is connected, and the outfan of described anti-jamming circuit is slow with described
The outfan depositing circuit connects, described anti-jamming circuit for the fundamental frequency signal that generates based on described drive circuit, obtain one with
Produce after described fundamental frequency signal frequency multiplication disturbs the anti-jamming signal that signal phase is contrary, and by described anti-jamming signal with described
The signal of buffer circuit output exports jointly, and wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication.
Second aspect, the embodiment of the present invention also provides for a kind of mobile terminal, and described mobile terminal includes controller, drives electricity
Road, buffer circuit and above-mentioned anti-jamming circuit.
The third aspect, the embodiment of the present invention also provides for a kind of method suppressing harmonic wave to disturb, is applied to mobile terminal, bag
Include:
Obtain the fundamental frequency signal driving signal；
Based on described fundamental frequency signal, obtain contrary the resisting of interference signal phase of one and generation after described fundamental frequency signal frequency multiplication
Interference signal, wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication；
Described interference signal is exported jointly with described driving signal, to eliminate described interference signal.
So, the anti-jamming circuit of the embodiment of the present invention, mobile terminal and the method for suppression harmonic wave interference, moved by detection
Dynamic frequency range residing for terminal, obtains fundamental frequency signal, and by fundamental frequency signal after frequency multiplication, amplification and delay disposal, obtains with dry
Disturb signal frequency identical with amplitude, and the anti-jamming signal of opposite in phase, then logical by described anti-jamming signal and mobile terminal
Letter signal together exports, and eliminates the interference signal in described signal of communication.So, by producing after fundamental frequency signal frequency multiplication with dry
Disturb the anti-jamming signal that signal phase is contrary, and jointly export to offset described interference signal with signal of communication, and then eliminate
The Radio frequency interference that the higher hamonic wave that in signal of communication, fundamental frequency signal produces causes, it is ensured that the properly functioning and call matter of mobile terminal
Amount, is conducive to improving Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required in the embodiment of the present invention being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the circuit theory diagrams of the mobile terminal that first embodiment of the invention embodiment provides；
Fig. 2 is the flow chart of the method for the suppression harmonic wave interference that second embodiment of the invention provides；
Fig. 3 is the flow chart of the method for the suppression harmonic wave interference that third embodiment of the invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments wholely.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
First embodiment
See the circuit theory diagrams that Fig. 1, Fig. 1 are the mobile terminals 100 that the embodiment of the present invention provides, as it is shown in figure 1, described
Mobile terminal 100 includes drive circuit 110, buffer circuit 120 and anti-jamming circuit 130, the input of described drive circuit 110
End is connected with the processor (not shown) of described mobile terminal 100, for being referred to from the processor of described mobile terminal 100
Order, thus start output drive signal, the outfan of described drive circuit 110 is connected with the input of described buffer circuit 120,
After the driving signal received from described drive circuit 110 is adjusted waveform by described buffer circuit 120, as described movement
The signal of communication output of terminal 100, described buffer circuit 120 also acts as certain protective effect.
The input of described anti-jamming circuit 130 is connected with the outfan of described drive circuit 110, for from described driving
The fundamental frequency signal that described drive circuit 110 generates is received, based on described fundamental frequency signal, described anti-jamming circuit 130 at circuit 110
Generate an anti-jamming signal contrary with the interference signal phase produced after described fundamental frequency signal frequency multiplication, described anti-jamming circuit
The outfan of 130 is connected with the outfan of described buffer circuit 120, for by defeated with described buffer circuit for described anti-jamming signal
The signal gone out exports jointly, with by the described interference signal cancellation in the signal of communication of output.Wherein, described interference signal be by
In described fundamental frequency signal after the modes such as Fourier expansion carry out frequency multiplication, and the higher hamonic wave produced.
Described anti-jamming circuit 130 includes controller 131, phase-locked loop circuit 132 and delay circuit 133.
Described controller 131 is connected with described drive circuit 110, for obtaining the communications status of described mobile terminal 100.
Obtaining the communications status of described mobile terminal 100, may refer to, described controller 131 detects the work of described drive circuit 110
State, thus detect the communications band residing for described mobile terminal 100.
Due to the fundamental frequency letter when described mobile terminal 100 is in different communications bands, in the signal of communication sent
Number also different, when fundamental frequency signal difference, signal of communication enters in modes such as Fourier expansions due to described fundamental frequency signal
After row frequency multiplication, and the frequency of the higher hamonic wave produced is the most different, and the most described controller 131 is determining described mobile terminal 100
Communications band after, the described communications band being determined by, determine fundamental frequency in the driving signal that described drive circuit 110 exports
Signal, and based on described fundamental frequency signal, determine the frequency of described interference signal.
Described phase-locked loop circuit 132 is connected with described controller 131, and the input of described phase-locked loop circuit 132 is as institute
Stating the input of anti-jamming circuit 130, and be connected with the outfan of described drive circuit 110, described phase-locked loop circuit 132 is used for
After described controller 131 obtains the communications status of described mobile terminal 100, under the control of described controller 131, from described
The outfan of drive circuit 110 receives described fundamental frequency signal, and the described fundamental frequency signal received is carried out process of frequency multiplication, with
To the frequency-doubled signal that the frequency of a described interference signal determined with described controller 131 is identical, and export described frequency-doubled signal.
Although present embodiment uses described phase-locked loop circuit described fundamental frequency signal to carry out frequency multiplication to obtain described times
Frequently signal, but be not limited thereto, the most in other embodiments, it is possible to use circuit based on Fourier methods is to described
Fundamental frequency signal carries out frequency multiplication, the signal of other frequency-portions of being decayed by a band filter the most again, obtains described times
Frequently signal, or can also use based on parametric approach, realize the hard of multiplication based on the parameter transition provided between quasiconductor
Part, has the circuit mode of a subharmonic selectable Clock Multiplier Factor of decay to obtain described frequency-doubled signal at its outfan.
Described delay circuit 133 is connected with described controller 131, and the input of described delay circuit 133 is phase-locked with described
The outfan of loop circuit 132 connects, for being carried out at delay by the described frequency-doubled signal received from described phase-locked loop circuit 132
Reason, to obtain a delay signal and to export described delay signal, the phase place of described delay signal and the phase place of described interference signal
On the contrary, i.e. both phase 180 degree.The outfan of described delay circuit 133 connects with the outfan of described buffer circuit 120
Connect, the most defeated with the signal of communication that described buffer circuit 120 exports for the described delay signal that will obtain through delay disposal
Go out, eliminate described interference signal.
Described anti-jamming circuit 130 can include drive amplification circuit 134, described drive amplification circuit 134 and described control
Device 131 processed connects, and described drive amplification circuit 134 is connected between described phase-locked loop circuit 132 and described delay circuit 133,
Described drive amplification circuit 134 is used for receiving described frequency-doubled signal from the outfan of described phase-locked loop circuit 132, and to described times
Frequently signal is repaired, with by the Amplitude amplification of described frequency-doubled signal to identical with the amplitude of described interference signal, then will repair
Frequency-doubled signal after whole exports to described delay circuit 133, and the described frequency-doubled signal after finishing is carried out by described delay circuit 133
Delay disposal, to obtain described delay signal.
Described anti-jamming circuit 130 can include filter circuit 135 and on-off circuit 136, described filter circuit 135 and institute
Stating controller 131 to connect, the input of described filter circuit 135 is connected with the outfan of described delay circuit 133, is used for receiving
The described delay signal of described delay circuit 133 output, and filter the direct current signal in described delay circuit 133 output signal,
I.e. filter out the direct current signal in described delay signal, filter out the described delay signal after direct current signal i.e. as described anti-dry
Disturb signal.
Described on-off circuit 136 is connected with described controller 131, the input of described on-off circuit 136 and described filtering
The outfan of circuit 135 connects, and the outfan of described on-off circuit 136 is connected with the outfan of described buffer circuit 120, is used for
The signal of communication that the described anti-jamming signal exported by described filter circuit 135 exports with described buffer circuit 120 exports jointly.
Described on-off circuit 136, under the control of described controller 131, controls being switched on or off of described anti-jamming circuit 130.
In the embodiment of the present invention, above-mentioned mobile terminal any can possess the mobile terminal of communication function, such as: mobile phone,
Panel computer (Tablet Personal Computer), kneetop computer (Laptop Computer), personal digital assistant
(personal digital assistant is called for short PDA), mobile Internet access device (Mobile Internet Device, MID)
Or Wearable device (Wearable Device) etc..
The anti-jamming circuit of the embodiment of the present invention and mobile terminal, by the frequency range residing for detection mobile terminal, obtain base
Frequently signal, and by fundamental frequency signal after frequency multiplication, amplification and delay disposal, obtain identical with interference signal frequency and amplitude, and
The anti-jamming signal of opposite in phase, then the signal of communication of described anti-jamming signal with mobile terminal is together exported, eliminate described
Interference signal in signal of communication.So, by contrary with disturbing signal phase anti-interference by producing after fundamental frequency signal frequency multiplication
Signal, and jointly export to offset described interference signal with signal of communication, and then eliminate fundamental frequency signal generation in signal of communication
The Radio frequency interference that causes of higher hamonic wave, it is ensured that the properly functioning and speech quality of mobile terminal, be conducive to improving Consumer's Experience.
Second embodiment
See the flow chart that Fig. 2, Fig. 2 are the methods of the suppression harmonic wave interference that the embodiment of the present invention provides, as in figure 2 it is shown,
Described method is applied to mobile terminal, and described mobile terminal includes drive circuit, buffer circuit and anti-jamming circuit, states driving
The outfan of circuit is connected with the input of described buffer circuit, the input of described anti-jamming circuit and described drive circuit
Outfan connects, and the outfan of described anti-jamming circuit is connected with the outfan of described buffer circuit, and described method includes following
Step:
Step 201, acquisition drive the fundamental frequency signal of signal.
In this step, due to when described mobile terminal is in different communications bands, in the signal of communication sent
Fundamental frequency signal is the most different, and when fundamental frequency signal difference, owing to described fundamental frequency signal is in Fourier expansion in signal of communication
After carrying out frequency multiplication etc. mode, and the frequency of the higher hamonic wave produced is the most different, it is therefore desirable to first determine the logical of described mobile terminal
Letter frequency range, based on described communications band, determines the fundamental frequency signal of correspondence, thus obtains the fundamental frequency signal driven in signal.
Step 202, based on described fundamental frequency signal, obtain one with described fundamental frequency signal frequency multiplication after the interference signal phase that produces
Contrary anti-jamming signal, wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication.
In this step, after getting described fundamental frequency signal, based on described fundamental frequency signal, by described fundamental frequency signal is entered
The a series of process of row, obtains an anti-jamming signal, in order to the interference signal produced after offsetting described fundamental frequency signal frequency multiplication, institute
State the phase place of anti-jamming signal and the opposite in phase of described interference signal, i.e. both phase 180 degree.
Wherein, the harmonic component after described interference signal is described fundamental frequency signal frequency multiplication.For example, the most described fundamental frequency
Signal is with Fourier expansion, and in the ideal case, the Fourier expansion formula of ideal square wave is as follows
Including the fundamental signal with clock drive signals same frequencyAnd frequency tripling
And fifth harmonicDeng harmonic component signal.If it is assumed that time in a certain frequency range, 25 frequencys multiplication of clock drive signals
Harmonic signalFor interference signal, then I is accomplished by fundamental frequency signal described in opportunity, obtains one and described 25
The anti-jamming signal that multiplied frequency harmonic signal phase is contrary.
Step 203, the signal of communication of described interference signal with described mobile terminal is exported jointly, to eliminate described interference
Signal.
In this step, after obtaining described anti-jamming signal, by the communication of described anti-jamming signal Yu described mobile terminal
Signal exports jointly, to eliminate described interference signal.
Wherein, owing to described anti-jamming signal is to be obtained by described fundamental frequency signal frequency multiplication, and after treatment, with institute
The frequency stating interference signal is identical, and amplitude is identical, and the opposite in phase of phase place and described interference signal, therefore, jointly exports
Time, described anti-jamming signal can be cancelled out each other with described interference signal.
The method of the suppression harmonic wave interference of the embodiment of the present invention, obtains the fundamental frequency signal driving signal；Based on described fundamental frequency
Signal, obtains an anti-jamming signal contrary with the interference signal phase produced after described fundamental frequency signal frequency multiplication, wherein, described dry
Disturbing signal is the harmonic component after described fundamental frequency signal frequency multiplication；The signal of communication of described interference signal with described mobile terminal is total to
With output, to eliminate described interference signal.So, by resist contrary with disturbing signal phase will be produced after fundamental frequency signal frequency multiplication
Interference signal, and jointly export to offset described interference signal with signal of communication, and then eliminate fundamental frequency signal in signal of communication
The Radio frequency interference that the higher hamonic wave produced causes, it is ensured that the properly functioning and speech quality of mobile terminal, is conducive to improving user
Experience.
3rd embodiment
See the flow chart that Fig. 3, Fig. 3 are the methods of the suppression harmonic wave interference that the embodiment of the present invention provides, as it is shown on figure 3,
Described method is applied to mobile terminal, and described mobile terminal includes drive circuit, buffer circuit and anti-jamming circuit, states driving
The outfan of circuit is connected with the input of described buffer circuit, the input of described anti-jamming circuit and described drive circuit
Outfan connects, and the outfan of described anti-jamming circuit is connected with the outfan of described buffer circuit, and described method includes following
Step:
Step 301, acquisition drive the fundamental frequency signal of signal.
Step 302, based on described fundamental frequency signal, obtain one with described fundamental frequency signal frequency multiplication after the interference signal phase that produces
Contrary anti-jamming signal, wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication.
Step 303, the direct current signal filtered in described anti-jamming signal.
In this step, after getting described anti-jamming signal, it is filtered described anti-jamming signal processing, to filter
Fall the direct current signal in described anti-jamming signal, to reduce the impact on described anti-jamming signal.
Step 304, the signal of communication of described interference signal with described mobile terminal is exported jointly, to eliminate described interference
Signal.
Step 301, step 302 and step 304 respectively with the step 201 in the second embodiment of the present invention, step 202 and
Step 203 is identical, does not repeats at this.
Optionally, described step 302 includes:
Based on described fundamental frequency signal, obtain first signal identical with the frequency of described interference signal and amplitude；To described
First signal carries out delay disposal, obtains the anti-jamming signal contrary with described interference signal phase.
In this step, after getting described fundamental frequency signal, based on described fundamental frequency signal, described fundamental frequency signal is carried out again
Frequency and processing and amplifying, obtain one first signal so that the frequency of described first signal is all identical with described interference signal with amplitude.
After obtaining described first signal, further described first signal is carried out delay disposal, change the phase of described first signal
Position, obtains the anti-jamming signal contrary with described interference signal phase.
Wherein, described fundamental frequency signal is carried out process of frequency multiplication, it is possible to use one has the circuit of double frequency function, the most phase-locked
Loop circuit, is amplified described fundamental frequency signal processing, it is possible to use one has the circuit of enlarging function, such as drive amplification electricity
Road, carries out delay disposal to described first signal, it is possible to use one has the delay circuit of delay feature.
Wherein, described fundamental frequency signal is carried out frequency multiplication and processing and amplifying, obtain the frequency with described interference signal and amplitude
The first identical signal, in no particular order order.
Wherein, described first signal after phase place is changed, i.e. as described anti-jamming signal.The phase of described anti-jamming signal
Position and the opposite in phase of described interference signal, say, that both phase 180 degree.
Optionally, based on described fundamental frequency signal, first signal identical with the frequency of described interference signal and amplitude is obtained
Step, including:
Described fundamental frequency signal is carried out process of frequency multiplication, makes the frequency of the described fundamental frequency signal after frequency multiplication and described interference signal
Identical；Amplify the described fundamental frequency signal after frequency multiplication, obtain first signal identical with the frequency of described interference signal and amplitude.
In this step, after getting described fundamental frequency signal, described only signal is carried out process of frequency multiplication, thus obtains one
The signal identical with described interference signal frequency, then the signal obtaining frequency multiplication, i.e. the described fundamental frequency signal after frequency multiplication, puts
Big process, to obtain first signal identical with the frequency of described interference signal and amplitude.
Wherein, described fundamental frequency signal is carried out frequency multiplication and processing and amplifying, obtain the frequency with described interference signal and amplitude
The first identical signal, in no particular order order.
Optionally, step 304 includes:
Adjust the waveform of described driving signal；Described driving signal after exporting described anti-jamming signal and adjusting, to disappear
Except described interference signal.
In this step, described driving signal is adjusted, adjusts the waveform of described driving signal, make described driving signal
Waveform is neat, then by described anti-jamming signal with adjust after described driving signal jointly export, believe eliminating described interference
Number.
Wherein, the described driving signal after adjustment may act as the signal of communication of described mobile terminal.
The method of the suppression harmonic wave interference of the embodiment of the present invention, obtains the fundamental frequency signal driving signal；Based on described fundamental frequency
Signal, obtains an anti-jamming signal contrary with the interference signal phase produced after described fundamental frequency signal frequency multiplication, wherein, described dry
Disturbing signal is the harmonic component after described fundamental frequency signal frequency multiplication；Filter the direct current signal in described anti-jamming signal；By described dry
The signal of communication disturbing signal and described mobile terminal exports, jointly to eliminate described interference signal.So, by by fundamental frequency signal
Produce the anti-jamming signal contrary with disturbing signal phase after frequency multiplication, and jointly export with signal of communication to offset described interference
Signal, and then eliminate the Radio frequency interference that the higher hamonic wave that in signal of communication, fundamental frequency signal produces causes, it is ensured that mobile terminal is just
Often run and speech quality, be conducive to improving Consumer's Experience.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (11)
1. an anti-jamming circuit, is applied in a mobile terminal, and described mobile terminal includes drive circuit and buffer circuit, institute
The input of the outfan and described buffer circuit of stating drive circuit is connected, it is characterised in that:
The input of described anti-jamming circuit is connected with the outfan of described drive circuit, the outfan of described anti-jamming circuit with
The outfan of described buffer circuit connects；
Described anti-jamming circuit is for the fundamental frequency signal generated based on described drive circuit, generation one and described fundamental frequency signal frequency multiplication
The interference contrary anti-jamming signal of signal phase of rear generation, and logical by described anti-jamming signal and the output of described buffer circuit
Letter signal exports jointly, and wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication.
2. anti-jamming circuit as claimed in claim 1, it is characterised in that described anti-jamming circuit includes:
Controller, described controller is connected with described drive circuit, for obtaining the communications status of described mobile terminal；
Phase-locked loop circuit, described phase-locked loop circuit is connected with described controller, and the input of described phase-locked loop circuit drives with described
The outfan on galvanic electricity road connects；
Delay circuit, described delay circuit is connected with described controller, the input of described delay circuit and described phaselocked loop electricity
The outfan on road connects, and the outfan of described delay circuit is connected with the outfan of described buffer circuit.
3. anti-jamming circuit as claimed in claim 2, it is characterised in that described controller is used for detecting described mobile terminal institute
The communications band at place, and based on described communications band, determine the frequency of described interference signal.
4. anti-jamming circuit as claimed in claim 2, it is characterised in that described anti-jamming circuit also includes drive amplification electricity
Road, described drive amplification circuit is connected with described controller, and described drive amplification circuit is connected to described phase-locked loop circuit and institute
State between delay circuit.
5. anti-jamming circuit as claimed in claim 2, it is characterised in that described anti-jamming circuit also includes:
Filter circuit, described filter circuit is connected with described controller, the input of described filter circuit and described delay circuit
Outfan connect, for filtering the direct current signal in described delay circuit output signal；
On-off circuit, described on-off circuit is connected with described controller, the input of described on-off circuit and described filter circuit
Outfan connect, the outfan of described on-off circuit is connected with the outfan of described buffer circuit, is used for controlling described resisting and does
Disturb circuit to be switched on or off.
6. a mobile terminal, it is characterised in that described mobile terminal includes drive circuit, buffer circuit and such as claim 1-
Anti-jamming circuit according to any one of 5.
7. the method suppressing harmonic wave to disturb, is applied to mobile terminal, it is characterised in that including:
Obtain the fundamental frequency signal driving signal；
Based on described fundamental frequency signal, obtain one with produce after described fundamental frequency signal frequency multiplication disturb contrary anti-interference of signal phase
Signal, wherein, described interference signal is the harmonic component after described fundamental frequency signal frequency multiplication；
The signal of communication of described interference signal with described mobile terminal is exported jointly, to eliminate described interference signal.
8. method as claimed in claim 7, it is characterised in that described based on described fundamental frequency signal, acquisition one and described fundamental frequency
Produce after signal frequency multiplication disturbs the step of the anti-jamming signal that signal phase is contrary, including:
Based on described fundamental frequency signal, obtain first signal identical with the frequency of described interference signal and amplitude；
Described first signal is carried out delay disposal, obtains the anti-jamming signal contrary with described interference signal phase.
9. method as claimed in claim 8, it is characterised in that described based on described fundamental frequency signal, obtains and described interference letter
Number the step of frequency first signal identical with amplitude, including:
Described fundamental frequency signal is carried out process of frequency multiplication, makes the frequency phase of the described fundamental frequency signal after frequency multiplication and described interference signal
With；
Amplify the described fundamental frequency signal after frequency multiplication, obtain first signal identical with the frequency of described interference signal and amplitude.
10. method as claimed in claim 7, it is characterised in that described based on described fundamental frequency signal, acquisition one and described base
Frequently, after signal frequency multiplication after the step of the anti-jamming signal that the interference signal phase of generation is contrary, described method also includes:
Filter the direct current signal in described anti-jamming signal.
11. methods as claimed in claim 7, it is characterised in that described logical by described interference signal and described mobile terminal
Letter signal exports jointly, to eliminate the step of described interference signal, including:
Adjust the waveform of described driving signal；
Described driving signal after exporting described anti-jamming signal and adjusting, to eliminate described interference signal.
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| CN201610694630.2A CN106230446B (en) | 2016-08-19 | 2016-08-19 | A kind of anti-jamming circuit, mobile terminal and the method for inhibiting harmonic wave interference |
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| CN107171740A (en) * | 2017-05-31 | 2017-09-15 | 广东欧珀移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
| CN107171741A (en) * | 2017-05-31 | 2017-09-15 | 广东欧珀移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
| CN107181535A (en) * | 2017-05-31 | 2017-09-19 | 广东欧珀移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
| CN107241145A (en) * | 2017-05-31 | 2017-10-10 | 广东欧珀移动通信有限公司 | Processing method, device, storage medium and the terminal of Radio frequency interference |
| CN107276602A (en) * | 2017-05-31 | 2017-10-20 | 广东欧珀移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
| CN109683677A (en) * | 2018-12-21 | 2019-04-26 | 深圳市车联天下信息科技有限公司 | For reducing the method and device of the radiation interference of I.MX6 chip |
| CN110971335A (en) * | 2019-11-25 | 2020-04-07 | 维沃移动通信有限公司 | Signal processing method and device and electronic equipment |
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