CN105763221B - A kind of radio circuit and disturbance restraining method - Google Patents
A kind of radio circuit and disturbance restraining method Download PDFInfo
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- CN105763221B CN105763221B CN201610084254.5A CN201610084254A CN105763221B CN 105763221 B CN105763221 B CN 105763221B CN 201610084254 A CN201610084254 A CN 201610084254A CN 105763221 B CN105763221 B CN 105763221B
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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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 embodiment of the present invention provides a kind of radio circuit and disturbance restraining method, at least to inhibit interference of the transmitting signal of a frequency range in main collection antenna to the reception signal of another frequency range.Radio circuit includes main collection antenna, RF front-end module, the first reverse phase attenuation module and the first combining module, and the main collection that main collection antenna is configured as receiving the first frequency range receives signal and emits the main collection transmitting signal of the second frequency range；The main collection transmission power of second frequency range detection signal for the main collection transmission power detection signal for the second frequency range that receiving radio frequency front end module is sent, and is carried out reverse phase and the first attenuation processing, obtains the first reverse phase deamplification by the first reverse phase attenuation module；First combining module, the main collection for receiving and merging the first frequency range receive the main collection transmitting signal and the first reverse phase deamplification of signal, the second frequency range, obtain first and merge signal.The present invention is suitable for radio frequency arts.
Description
Technical field
The present invention relates to radio frequency arts more particularly to a kind of radio circuits and disturbance restraining method.
Background technique
With the rapid hair of long term evolution (full name in English: long term evolution, english abbreviation: LTE) technology
Exhibition supports the mobile terminal of carrier wave polymerization (full name in English: carrier aggregation, english abbreviation: CA) function increasingly
More, the frequency range of support is also more and more, and interference environment is also more complicated.Especially frequency approaches or the carrier wave of frequency multiplication relationship is poly-
When conjunction, interference can be more obvious, influences bigger.
For example, Fig. 1 is a kind of functional block diagram of mobile terminal for supporting LTE B1+B3 dual downlink carrier wave polymerizable functional.It should
Mobile terminal uses the carrier wave polymerizable functional of two transceiver implementation B1+B3.Wherein, transceiver 0 completes the defeated of LTE B3 signal
Out, the main collection of LTE B3 signal receives and the diversity reception of LTE B3 signal, transceiver 1 complete the output of LTE B1 signal, LTE
The main collection of B1 signal receives and the diversity reception of LTE B1 signal.
Transmitting signal path is as follows: after the LTE B3 signal of transceiver 0 and the LTE B1 signal of transceiver 1 export respectively,
By switch enter radio-frequency power amplifier (full name in English: power amplifier, english abbreviation: PA) amplify it is laggard
Enter four function devices, be then output to RF front-end module, passes through main collection aerial radiation after the transmitting path of RF front-end module.
In order to realize the control to transmission power, RF front-end module has been internally integrated coupler, and each frequency range transmitting signal enters radio frequency
Then front-end module is coupled, two-way is divided into after switch by respective power detection signal and returns to respective transmitting-receiving
Generator terminal mouth is handled.By the power detection signal, transceiver can adjust transmission power, and whole system is made to be in reasonably stability
Working condition.
It is as follows to receive signal path: main collection antenna enters four after receiving signal after the receiving path of RF front-end module
The filtering of function device enters transceiver later and is handled；Diversity antenna receive signal be directly entered after wave filter transceiver into
Row processing, final two-way, which receives signal and can be superimposed, to be merged to promote the reception ability of terminal.
However, for mobile terminal shown in FIG. 1, if the frequency of LTE B1 frequency range and LTE B3 frequency range connects very much
Frequency range close or for frequency multiplication relationship, then the main collection transmitting signal of LTE B1 frequency range just has greatly feedback and arrives LTE B3
In the main collection receiving path of frequency range, interfered to receive signal to the main collection of LTE B3 frequency range, it is final to influence entire movement
The LTE B3 receptivity of terminal.
Therefore, the transmitting signal of a frequency range in main collection antenna how to be inhibited to receive the dry of signal to another frequency range
The technical issues of disturbing, being current urgent need to resolve.
Summary of the invention
The embodiment of the present invention provides a kind of radio circuit and disturbance restraining method, at least to inhibit in main collection antenna one
Interference of the transmitting signal of frequency range to the reception signal of another frequency range.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of radio circuit, including main collection antenna, RF front-end module, the first reverse phase attenuation module
With the first combining module, the main collection that the main collection antenna is configured as receiving the first frequency range receives signal and emits the second frequency range
Main collection emits signal；Wherein,
The first reverse phase attenuation module, for receiving the main collection for second frequency range that the RF front-end module is sent
Transmission power detects signal, and the main collection transmission power of second frequency range detection signal is carried out at reverse phase and the first decaying
Reason obtains the first reverse phase deamplification；
The first combining module, the main collection for receiving and merging first frequency range receive signal, second frequency
The main collection transmitting signal of section and the first reverse phase deamplification obtain first and merge signal.
Radio circuit based on the embodiment of the present invention, in the embodiment of the present invention, inversed module is in receiving radio frequency front end
After the main collection transmission power detection signal for the second frequency range that module is sent, letter is detected to the main collection transmission power of second frequency range
Number reverse phase and the first attenuation processing are carried out, obtains the first reverse phase deamplification.In turn, the first merging module receives and merges described
The main collection of first frequency range receives the main collection transmitting signal and the first reverse phase deamplification of signal, second frequency range.Due to
The opposite in phase of the main collection of the phase of first reverse phase deamplification and the second frequency range transmitting signal, and amplitude is close, thus with
After the main collection transmitting signal of second frequency range merges, the main collection of the second frequency range can be made to emit signal, the main collection of the first frequency range is connect
The interference of the collection of letters number substantially reduces, and the main collection of the first frequency range receives signal in the main collection receiving path so as to improve terminal
Receiving sensitivity, and then enhance the interaction capabilities of terminal and user.
Second aspect, provides a kind of disturbance restraining method, and the disturbance restraining method is used for radio circuit, the radio frequency electrical
Road includes main collection antenna and RF front-end module, the main collection that the main collection antenna is configured as receiving the first frequency range receive signal and
Emit the main collection transmitting signal of the second frequency range, which comprises
Before the main collection for receiving first frequency range receives signal, the main collection of second frequency range emits signal and the radio frequency
The main collection transmission power for second frequency range that end module is sent detects signal；
The main collection transmission power detection signal of second frequency range is subjected to reverse phase and the first attenuation processing, it is anti-to obtain first
Phase deamplification；
The main collection for merging first frequency range receives signal, the main collection of second frequency range emits signal and described first instead
Phase deamplification obtains first and merges signal.
Disturbance restraining method based on the embodiment of the present invention, in the embodiment of the present invention, in receiving radio frequency front end module
After the main collection transmission power detection signal of the second frequency range sent, to the main collection transmission power of second frequency range detect signal into
The main collection reception signal of row reverse phase and the first attenuation processing, the first reverse phase deamplification of acquisition, and then merging first frequency range,
The main collection transmitting signal of second frequency range and the first reverse phase deamplification obtain first and merge signal.In this way, due to
The opposite in phase of the main collection of the phase of one reverse phase deamplification and the second frequency range transmitting signal, and amplitude is close, therefore with the
After the main collection transmitting signal of two frequency ranges merges, the main collection of the second frequency range can be made to emit signal, the main collection of the first frequency range is received
The interference of signal substantially reduces, and the main collection of the first frequency range receives connecing for signal in the main collection receiving path so as to improve terminal
Sensitivity is received, and then enhances the interaction capabilities of terminal and user.
The third aspect provides a kind of mobile terminal, including radio circuit described in first aspect.
Since the mobile terminal in the embodiment of the present invention includes radio circuit as described in relation to the first aspect, can obtain
Technical effect see also the technical effect of radio circuit in above-mentioned first aspect, the embodiment of the present invention is no longer superfluous herein
It states.
Detailed description of the invention
Fig. 1 is the functional block diagram of the existing mobile terminal for supporting LTE B1+B3 dual downlink carrier wave polymerizable functional；
Fig. 2 is the functional block diagram one that the present invention is the radio circuit that embodiment provides；
Fig. 3 is the functional block diagram two that the present invention is the radio circuit that embodiment provides；
Fig. 4 is the functional block diagram three that the present invention is the radio circuit that embodiment provides；
Fig. 5 is the functional block diagram four that the present invention is the radio circuit that embodiment provides；
Fig. 6 is the functional block diagram five that the present invention is the radio circuit that embodiment provides；
Fig. 7 is the flow diagram one of disturbance restraining method provided in an embodiment of the present invention；
Fig. 8 is the flow diagram two of disturbance restraining method provided in an embodiment of the present invention；
Fig. 9 is the flow diagram three of disturbance restraining method provided in an embodiment of the present invention.
Specific embodiment
Multiple embodiments are described referring now to attached drawing, wherein indicating similar elements herein with identical appended drawing reference.
In the following description, for convenient for explain, a large amount of details are given, in order to provide to the comprehensive of one or more embodiments
Understand.It may be evident, however, that the embodiment can also be practiced without these specific details.In other examples, with block diagram
Form shows known features and equipment, in order to describe one or more embodiments.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
The quantity for implicitly indicating indicated technical characteristic, defines " first ", the feature of " second " can be expressed or imply as a result,
Ground includes one or more of the features." first " and " second " is only used for distinguishing in following embodiment, such as the first decay mode
Block and the second attenuation module, for another example: the first combining module, second combining module, etc..
Referring to shown in Fig. 2, the embodiment of the present invention provides a kind of radio circuit, including the first reverse phase attenuation module 22, first
It is combined module 23 and other each modules as shown in Figure 1.Wherein, main collection antenna is configured as receiving the master of LTE B3 frequency range
Collection receives signal and emits the main collection transmitting signal of LTE B1 frequency range.Certainly, main collection antenna can be also used for receiving LTE B1 frequency
The main collection of section receives signal and emits the transmitting signal of LTE B3 frequency range, and the present invention is not especially limit this.
Specifically, main collection transmission power detection signal is output and then enter switch from RF front-end module, then in Fig. 2
It is divided into two-way, detects signal all the way for the main collection transmission power of LTE B1 frequency range, emits function all the way for the main collection of LTE B3 frequency range
Rate detects signal, then respectively enters respective transceiver port and is handled.
However, as described in the background art, if the frequency of LTE B1 frequency range and LTE B3 frequency range is very close or is
The frequency range of frequency multiplication relationship, then the main collection transmitting signal of LTE B1 frequency range just has the master that greatly feedback arrives LTE B3 frequency range
Collect in receiving path, is interfered to receive signal to the main collection of LTE B3 frequency range, finally influence the LTE of entire mobile terminal
B3 receptivity.
In order to inhibit the main collection transmitting signal of LTE B1 frequency range in main collection antenna to receive signal to the main collection of LTE B3 frequency range
Interference, the main collection transmission power of LTE B1 frequency range detection signal is divided into two-way from A point at this time: (path 1), which enters, all the way receives
Generator terminal mouth is sent out to carry out power control；In addition (path 2) passes through the first reverse phase attenuation module 22 and the first combining module all the way
The useful main collection that LTE B3 frequency range is obtained after 23 processing receives signal.
Wherein, the first reverse phase attenuation module 22, the main collection hair for the LTE B1 frequency range that receiving radio frequency front end module is sent
Power detection signal is penetrated, and the main collection transmission power of LTE B1 frequency range detection signal is subjected to reverse phase and the first attenuation processing, is obtained
Obtain the first reverse phase deamplification.
First combining module 23, the main collection for receiving and merging LTE B3 frequency range receive the master of signal, LTE B1 frequency range
Collection transmitting signal and the first reverse phase deamplification obtain first and merge signal.
Reverse phase due to have passed through the first reverse phase attenuation module 22 is handled, the main collection of the LTE B1 frequency range on path 2
It is opposite with the main collection of feedback to the LTE B1 frequency range in LTE B3 receiving path transmitting signal phase that transmission power detects signal.
In addition, it should be readily apparent to one skilled in the art that the main collection transmission power detection signal of LTE B1 frequency range is arrived with feedback
The main collection transmitting signal amplitude of the LTE B1 frequency range of the main collection receiving path of LTE B3 is different, and phase is identical.In general, LTE B1 frequency range
Main collection transmission power detection signal amplitude much larger than feedback to LTE B3 it is main collection receiving path LTE B1 frequency range main collection
Emit the amplitude of signal.Therefore by adjusting the pad value of the first reverse phase attenuation module 22, the master of LTE B1 frequency range can be made
Collect the amplitude of transmission power detection signal and the main collection transmitting signal fed back to the LTE B1 frequency range of the main collection receiving path of LTE B3
It is identical as far as possible.
In turn, the signal by the first combining module 23 merges, and feedback can be made to receive to the main collection of LTE B3 frequency range
The interference that the main collection transmitting signal of LTE B1 frequency range in access receives signal to the main collection of LTE B3 frequency range substantially reduces, thus
The main collection that LTE B3 frequency range in the main collection receiving path of terminal can be improved receives the receiving sensitivity of signal, and then enhances terminal
With the interaction capabilities of user.
Optionally, in a kind of possible implementation, as shown in figure 3, the first reverse phase attenuation module 22 includes inversed module
220 and first attenuation module 221.
Wherein, inversed module 220, the main collection transmission power for receiving LTE B1 frequency range detect signal, and by LTE B1
The main collection transmission power detection signal of frequency range carries out reverse phase, obtains inversion signal；
First attenuation module 221 carries out the first attenuation processing for receiving inversion signal, and by inversion signal, obtains the
One reverse phase deamplification.
Optionally, in alternatively possible implementation, as shown in figure 4, the first reverse phase attenuation module 22 includes reverse phase mould
Block 220 and the first attenuation module 221.
Wherein, the first attenuation module 221, the main collection transmission power for receiving LTE B1 frequency range detect signal, and by LTE
The main collection transmission power of B1 frequency range detects the first attenuation processing of signal, obtains the first deamplification；
Inversed module 220 carries out reverse phase processing for receiving the first deamplification, and by the first deamplification, obtains the
One reverse phase deamplification.
That is, the first reverse phase attenuation module 22 can first the main collection to LTE B1 frequency range be sent out in the embodiment of the present invention
It penetrates after power detection signal carries out reverse phase processing and carries out the first attenuation processing again, can also first the main collection to LTE B1 frequency range emit
Power detection signal carries out the first attenuation processing and carries out reverse phase processing again, and the present invention is not especially limit this.
Further, in the mobile terminal of support LTE B1+B3 dual downlink carrier wave polymerizable functional shown in Fig. 1, if LTE
The frequency of B1 frequency range and LTE B3 frequency range is very close or is frequency multiplication relationship, then isolation is very poor, LTE B1 in main collection antenna
The main collection transmitting signal of frequency range is easy to be received by diversity antenna to the diversity reception to the LTE B3 frequency range in diversity antenna
Signal interferes.By taking the polymerization of LTE B3+B5 dual downlink carrier wave as an example, the tranmitting frequency of LTE B3 is 1710-1785Mhz, LTE
The reception frequency of B5 is 869-894Mhz, is just the relationship of two frequencys multiplication.According to ideal situation, the diversity reception antenna of LTE B5
Length is quarter-wave, and is exactly half wavelength for LTE B3, and the antenna efficiency under this wavelength is even higher than
The efficiency of the quarter-wave aerial of LTE B3.The diversity reception performance of LTE B3 signal can be influenced at this time very big.
To inhibit the main collection of LTE B1 frequency range in main collection antenna to emit signal to the diversity of LTE B3 frequency range in diversity antenna
The interference of signal is received, as shown in figure 5, can also include the second combining module in radio circuit provided in an embodiment of the present invention
24.Wherein, diversity antenna is configured as receiving the diversity reception signal of LTE B3 frequency range.Certainly, diversity antenna can be also used for
The diversity reception signal of LTE B1 frequency range is received, the present invention is not especially limit this.
As shown in figure 5, the main collection transmission power detection signal of the LTE B1 frequency range on path 2 is through the first reverse phase attenuation module
After 22 reverse phase and the first decaying, be directly divided into two-way: (path 3) passes through the first combining module 23 and LTE B3 frequency range all the way
Main collection receives after signal merges and obtains the useful reception signal of LTE B3 frequency range；In addition (path 4) passes through the second combining mould all the way
Block 24 merges with the signal of LTE B3 diversity reception access.
Second combining module 24, for receiving and merging the diversity reception signal of LTE B3 frequency range, the master of LTE B1 frequency range
Collection transmitting signal and the first reverse phase deamplification obtain second and merge signal.
Reverse phase due to have passed through the first reverse phase attenuation module 22 is handled, the main collection of the LTE B1 frequency range on path 2
It is opposite with the main collection of feedback to the LTE B1 frequency range in LTE B3 receiving path transmitting signal phase that transmission power detects signal.
In addition, it should be readily apparent to one skilled in the art that the main collection transmission power detection signal of LTE B1 frequency range is arrived with feedback
The main collection transmitting signal amplitude of the LTE B1 frequency range of the main collection receiving path of LTE B3 is different, and phase is identical.In general, LTE B1 frequency range
Main collection transmission power detection signal amplitude much larger than feedback to LTE B3 it is main collection receiving path LTE B1 frequency range main collection
Emit the amplitude of signal.Therefore by adjusting the pad value of the first reverse phase attenuation module 22, the master of LTE B1 frequency range can be made
Collect the amplitude of transmission power detection signal and the main collection transmitting signal fed back to the LTE B1 frequency range of the main collection receiving path of LTE B3
It is identical as far as possible.
In turn, the signal by the second combining module 24 merges, and can weaken from main collection antenna end feedback to LTE B3 points
Collect interference of the main collection transmitting signal of the LTE B1 frequency range of receiving path to the diversity reception signal of LTE B3 frequency range, so as to
The receiving sensitivity of the diversity reception signal of LTE B3 frequency range in the diversity reception access of terminal is improved, and then enhances terminal and uses
The interaction capabilities at family.
Optionally, the main collection for LTE B1 frequency range in the main collection antenna of inhibition emits signal to LTE B3 frequency range in diversity antenna
Diversity reception signal interference, as shown in fig. 6, can also include the second reverse phase in radio circuit provided in an embodiment of the present invention
Attenuation module 25 and third are combined module 26.Wherein, diversity antenna is configured as receiving the diversity reception signal of LTE B3 frequency range.
Certainly, diversity antenna can be also used for receiving the diversity reception signal of LTE B1 frequency range, and the embodiment of the present invention is not made this specifically
It limits.
As shown in fig. 6, the main collection transmission power detection signal of LTE B1 frequency range separates in (path 5) all the way again from A point, pass through
The useful diversity reception signal of LTE B3 frequency range is obtained after the processing of second reverse phase attenuation module 25 and third combining module 26.
Wherein, the second reverse phase attenuation module 25, the main collection hair for the LTE B1 frequency range that receiving radio frequency front end module is sent
Power detection signal is penetrated, and the main collection transmission power of LTE B1 frequency range detection signal is subjected to reverse phase and the second attenuation processing, is obtained
Obtain the second reverse phase deamplification.
Third is combined module 26, for receiving and merging the diversity reception signal of LTE B3 frequency range, the master of LTE B1 frequency range
Collection transmitting signal and the second reverse phase deamplification obtain third and merge signal.
Reverse phase due to have passed through the second reverse phase attenuation module 25 is handled, the main collection of the LTE B1 frequency range on path 5
It is opposite with the main collection of feedback to the LTE B1 frequency range in LTE B3 receiving path transmitting signal phase that transmission power detects signal.
In addition, it should be readily apparent to one skilled in the art that the main collection transmission power detection signal of LTE B1 frequency range is arrived with feedback
The main collection transmitting signal amplitude of the LTE B1 frequency range of LTE B3 diversity reception access is different, and phase is identical.In general, LTE B1 frequency range
Main collection transmission power detection signal amplitude much larger than feedback to LTE B3 diversity reception access LTE B1 frequency range main collection
Emit the amplitude of signal.Therefore by adjusting the pad value of the second reverse phase attenuation module 25, the master of LTE B1 frequency range can be made
Collect transmission power detection signal and feeds back the amplitude to the main collection transmitting signal of the LTE B1 frequency range of LTE B3 diversity reception access
It is identical as far as possible.
In turn, the signal by third combining module 26 merges, and can weaken from main collection antenna end feedback to LTE B3 points
Collect interference of the main collection transmitting signal of the LTE B1 frequency range of receiving path to the diversity reception signal of LTE B3 frequency range, so as to
The receiving sensitivity of the diversity reception signal of LTE B3 frequency range in the diversity reception access of terminal is improved, and then enhances terminal and uses
The interaction capabilities at family.
It declines it should be noted that radio circuit shown in fig. 6 increases a reverse phase relative to radio circuit shown in fig. 5
Subtract module, after the main collection transmission power detection signal of such LTE B1 frequency range can according to need the different degrees of decaying of progress,
Merge all the way with the diversity reception signal of LTE B3 frequency range, receives signal with the main collection of LTE B3 frequency range all the way and merge, so as to
Emit signal pair with the maximum main collection for reducing feedback to the LTE B1 frequency range in the main collection receiving path of LTE B3 frequency range
The main collection of LTE B3 frequency range receives the interference of signal, and reduces from main collection antenna end feedback to LTE B3 diversity reception access
Interference of the main collection transmitting signal of LTE B1 frequency range to the diversity reception signal of LTE B3 frequency range, the main collection for promoting terminal, which receives, to be led to
The main collection of LTE B3 frequency range receives point of LTE B3 frequency range in the receiving sensitivity of signal and the diversity reception access of terminal in road
Collection receives the receiving sensitivity of signal, and then enhances the interaction capabilities of terminal and user.
It should be noted that the second reverse phase attenuation module 25 in Fig. 6 first can emit function by the main collection to LTE B1 frequency range
Rate detection signal carries out the second attenuation processing after carrying out reverse phase processing again, can also be first to the main collection transmission power of LTE B1 frequency range
Detection signal carries out the second attenuation processing and carries out reverse phase processing again, specifically refers to the first reverse phase attenuation module in Fig. 3 and Fig. 4
22, details are not described herein for the embodiment of the present invention.Module is bolted by two reverse phases of setting, can be detected respectively on main collection antenna
Receive the power of the reception signal on the power and diversity electric wire of signal.The decaying of power detection signal is adjusted separately, so that
Noise in combining signal is preferably offset.
It should be noted that in above-mentioned each radio circuit, either main collection receiving path or diversity reception access are wanted
Want that it is impossible for being completely counterbalanced by the transmitting signal of leakage, but we can calculate leakage according to the actual situation
The energy of transmitting signal adjusts the pad value of corresponding attenuation module by the test number of different samples, thus utmostly
Counteracting feedback transmitting signal interference, promoted the first frequency band signals receiving sensitivity.
Based on radio circuit shown in Fig. 2, the embodiment of the present invention also provides a kind of disturbance restraining method, as shown in fig. 7, packet
Include step S701-S703:
S701, the main collection for receiving the first frequency range receive the main collection transmitting signal and RF front-end module of signal, the second frequency range
The main collection transmission power of the second frequency range sent detects signal.
Specifically, the first frequency range in the embodiment of the present invention specifically corresponds to the LTE B3 frequency in radio circuit shown in Fig. 2
Section, the second frequency range correspond to the LTE B1 frequency range in radio circuit shown in Fig. 2.
Wherein, as described above, first frequency range and the second frequency range can be two close frequency ranges of frequency, or times
Two frequency ranges of frequency relationship, the present invention is not especially limit this
S702, the main collection transmission power detection signal of second frequency range is subjected to reverse phase and the first attenuation processing, obtained
First reverse phase deamplification.
S703, the main collection for merging first frequency range receive signal, the main collection of second frequency range emits signal and described
First reverse phase deamplification obtains first and merges signal.
Disturbance restraining method based on the embodiment of the present invention, in the embodiment of the present invention, in receiving radio frequency front end module
After the main collection transmission power detection signal of the second frequency range sent, to the main collection transmission power of second frequency range detect signal into
The main collection reception signal of row reverse phase and the first attenuation processing, the first reverse phase deamplification of acquisition, and then merging first frequency range,
The main collection transmitting signal of second frequency range and the first reverse phase deamplification obtain first and merge signal.In this way, due to
The opposite in phase of the main collection of the phase of one reverse phase deamplification and the second frequency range transmitting signal, and amplitude is close, therefore with the
After the main collection transmitting signal of two frequency ranges merges, the main collection of the second frequency range can be made to emit signal, the main collection of the first frequency range is received
The interference of signal substantially reduces, and the main collection of the first frequency range receives connecing for signal in the main collection receiving path so as to improve terminal
Sensitivity is received, and then enhances the interaction capabilities of terminal and user.
Further, as shown in figure 8, being based on radio circuit shown in fig. 5, AF panel side provided in an embodiment of the present invention
Method can also include step S704:
S704, the diversity reception signal for receiving the first frequency range.
The main collection transmission power detection signal of second frequency range is subjected to reverse phase and the first attenuation processing described, is obtained
Further include step S705 after first reverse phase deamplification (step S702):
S705, the diversity reception signal for merging first frequency range, the main collection transmitting signal of second frequency range and described
First reverse phase deamplification obtains second and merges signal.
It should be noted that there is no inevitable execution sequencing, Ke Yixian between step S704 and step S701-S703
Step S704 is executed, then executes step S701-S703；Step S701-S703 can also be first carried out, then executes step S704；Or
Person can be performed simultaneously with step S704 and step S701-S703, and the present invention is not especially limit this.
It should be noted that step S705 is executed after step S702, there is no inevitable execution between step S703
Sequencing can first carry out step S703, then execute step S705；Step S S705 can also be first carried out, then executes step
S703；It may also be performed simultaneously step S705 and step S703, the present invention is not especially limit this.
In the embodiment of the present invention, after the diversity reception signal for receiving the first frequency range, also by the diversity of first frequency range
Signal, the main collection transmitting signal of the second frequency range and the first reverse phase deamplification is received to merge.Due to the first reverse phase deamplification
The opposite in phase of the main collection of phase and the second frequency range transmitting signal, and amplitude is close, therefore emits with the main collection of the second frequency range
After signal merges, the main collection transmitting of the second frequency range from main collection antenna end feedback to the first frequency range diversity reception access can be weakened
Interference of the signal to the diversity reception signal of the first frequency range, the first frequency range in the diversity reception access so as to improve terminal
The receiving sensitivity of diversity reception signal, and then enhance the interaction capabilities of terminal and user.
Optionally, as shown in figure 9, being based on radio circuit shown in fig. 6, disturbance restraining method provided in an embodiment of the present invention
Can also include step S706-S708:
S706, the diversity reception signal for receiving the first frequency range.
S707, the main collection transmission power detection signal of second frequency range is subjected to reverse phase and the second attenuation processing, obtained
Second reverse phase deamplification.
S708, the diversity reception signal for merging first frequency range, the main collection transmitting signal of second frequency range and described
Second reverse phase deamplification obtains third and merges signal.
In the embodiment of the present invention, signal is detected in the main collection transmission power for the second frequency range that receiving radio frequency front end module is sent
Later, reverse phase and the second attenuation processing are carried out to the main collection transmission power detection signal of second frequency range, obtains the second reverse phase and declines
Cut signal.In turn, after the diversity reception signal for receiving the first frequency range, by the diversity reception signal of first frequency range, institute
The main collection transmitting signal and the second reverse phase deamplification for stating the second frequency range merge, and obtain third and merge signal.Due to
The opposite in phase of the main collection of the phase of second reverse phase deamplification and the second frequency range transmitting signal, and amplitude is close, thus with
After the main collection transmitting signal of second frequency range merges, it can weaken from main collection antenna end feedback to the first frequency range diversity reception access
Interference of the main collection transmitting signal of second frequency range to the diversity reception signal of the first frequency range, connects so as to improve the diversity of terminal
The receiving sensitivity of the diversity reception signal of the first frequency range in access is received, and then enhances the interaction capabilities of terminal and user.
It should be noted that disturbance restraining method shown in Fig. 9, compared with disturbance restraining method shown in Fig. 8, second frequently
The main collection transmission power detection signal of section can according to need carry out different degrees of decaying after, all the way with the diversity of the first frequency range
It receives signal to merge, receives signal with the main collection of the first frequency range all the way and merges, feed back so as to reduce to the greatest extent to the
The main collection transmitting signal of the second frequency range in the main collection receiving path of one frequency range receives the interference of signal to the main collection of the first frequency range,
And reduce diversity reception access from main collection antenna end feedback to the first frequency range the second frequency range main collection transmitting signal to the
The interference of the diversity reception signal of one frequency range, the main collection for promoting the first frequency range in the main collection receiving path of terminal receive connecing for signal
The receiving sensitivity of the diversity reception signal of the first frequency range in the diversity reception access of sensitivity and terminal is received, and then enhances terminal
With the interaction capabilities of user.
It should be noted that either main collection receiving path or diversity reception are logical in above-mentioned each disturbance restraining method
Road is impossible to the transmitting signal of leakage to be completely counterbalanced by, but we can according to the actual situation, and calculating is let out
The energy of the transmitting signal of dew adjusts the pad value of corresponding attenuation module by the test number of different samples, thus maximum
The interference of the transmitting signal of the counteracting leakage of degree, promotes the receiving sensitivity of the first frequency range
The present invention also provides a kind of mobile terminal, above-mentioned Fig. 2 is provided in the mobile terminal to shown in fig. 6 arbitrary
Radio circuit.
Due to being provided with above-mentioned Fig. 2 in the mobile terminal to arbitrary radio circuit shown in fig. 6, can obtain
Technical effect can refer to the technical effect of above-mentioned radio circuit, details are not described herein for the embodiment of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. a kind of radio circuit, including main collection antenna and RF front-end module, the main collection antenna is configured as receiving the first frequency
The main collection of section receives signal and emits the main collection transmitting signal of the second frequency range；It is characterized in that, the radio circuit further include: the
One reverse phase attenuation module and the first combining module；Wherein,
The first reverse phase attenuation module, for receiving the main collection transmitting for second frequency range that the RF front-end module is sent
Power detection signal, and the main collection transmission power of second frequency range detection signal is subjected to reverse phase and the first attenuation processing, it obtains
Obtain the first reverse phase deamplification；
The first combining module, the main collection for receiving and merging first frequency range receive signal, second frequency range
Main collection transmitting signal and the first reverse phase deamplification obtain first and merge signal；
The radio circuit further include: diversity antenna, the second reverse phase attenuation module and third are combined module；The diversity antenna quilt
It is configured to receive the diversity reception signal of first frequency range；
The second reverse phase attenuation module, for receiving the main collection transmitting for second frequency range that the RF front-end module is sent
Power detection signal, and the main collection transmission power of second frequency range detection signal is subjected to reverse phase and the second attenuation processing, it obtains
Obtain the second reverse phase deamplification；
The third is combined module, for receiving and merging the diversity reception signal of first frequency range, second frequency range
Main collection transmitting signal and the second reverse phase deamplification obtain third and merge signal；
The first reverse phase attenuation module is different from the pad value of the second reverse phase attenuation module.
2. radio circuit according to claim 1, which is characterized in that the first reverse phase attenuation module includes inversed module
With the first attenuation module；
The inversed module, for receiving the main collection transmission power detection for second frequency range that the RF front-end module is sent
Signal, and the main collection transmission power of second frequency range detection signal is subjected to reverse phase processing, obtain inversion signal；
First attenuation module carries out the first attenuation processing for receiving the inversion signal, and by the inversion signal, obtains
Obtain the first reverse phase deamplification.
3. radio circuit according to claim 1, which is characterized in that the first reverse phase attenuation module includes inversed module
With the first attenuation module；
First attenuation module, for receiving the main collection transmission power for second frequency range that the RF front-end module is sent
Signal is detected, and the main collection transmission power of second frequency range detection signal is subjected to the first attenuation processing, obtains the first decaying
Signal；
The inversed module carries out reverse phase processing for receiving first deamplification, and by first deamplification, obtains
Obtain the first reverse phase deamplification.
4. a kind of disturbance restraining method, which is characterized in that the disturbance restraining method is used for radio circuit, the radio circuit packet
Main collection antenna and RF front-end module are included, the main collection that the main collection antenna is configured as receiving the first frequency range receives signal and transmitting
The main collection of second frequency range emits signal, which comprises
The main collection for receiving first frequency range receives the main collection transmitting signal and the radio-frequency front-end mould of signal, second frequency range
The main collection transmission power for second frequency range that block is sent detects signal；
The main collection transmission power detection signal of second frequency range is subjected to reverse phase and the first attenuation processing, the first reverse phase is obtained and declines
Cut signal；
The main collection for merging first frequency range receives signal, the main collection transmitting signal of second frequency range and first reverse phase and declines
Cut signal obtains first and merges signal；
The radio circuit further includes diversity antenna, and the diversity antenna is configured as receiving the diversity reception of first frequency range
Signal；The method also includes:
Receive the diversity reception signal of first frequency range；
The main collection transmission power detection signal of second frequency range is subjected to reverse phase and the second attenuation processing, the second reverse phase is obtained and declines
Cut signal；
Merge the diversity reception signal of first frequency range, the main collection transmitting signal of second frequency range and second reverse phase to decline
Cut signal obtains third and merges signal；
The first reverse phase attenuation module is different from the pad value of the second reverse phase attenuation module.
5. a kind of mobile terminal, which is characterized in that including the described in any item radio circuits of claim 1-3.
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| CN201610084254.5A CN105763221B (en) | 2016-02-06 | 2016-02-06 | A kind of radio circuit and disturbance restraining method |
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| CN106411336B (en) * | 2016-09-28 | 2019-04-26 | 青岛海信移动通信技术股份有限公司 | Terminal and its interference cancellation circuit, interference elimination method |
| CN108345811B (en) * | 2017-01-23 | 2021-07-23 | 杭州爱钥医疗健康科技有限公司 | Radio frequency interference suppression method and device |
| CN106953659B (en) * | 2017-02-10 | 2019-08-20 | 维沃移动通信有限公司 | A kind of method and device inhibiting interference |
| CN107171740B (en) * | 2017-05-31 | 2020-10-09 | Oppo广东移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
| CN110098840B (en) * | 2019-04-30 | 2021-01-08 | 维沃移动通信有限公司 | Radio frequency device and terminal equipment |
| CN110224719B (en) * | 2019-06-25 | 2021-08-31 | Oppo广东移动通信有限公司 | Communication control method and related product |
| CN115021767B (en) * | 2022-08-09 | 2022-11-04 | 北京理工大学 | USB interference elimination device for wireless equipment |
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| CN103916148B (en) * | 2013-01-05 | 2016-08-03 | 华为技术有限公司 | A kind of adaptive RF Interference Cancellation device, method, receiver and communication system |
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |