CN106972873A - Mobile terminal up-link carrier polymerize and WIFI co-channel interference suppression methods and system - Google Patents
Mobile terminal up-link carrier polymerize and WIFI co-channel interference suppression methods and system Download PDFInfo
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- CN106972873A CN106972873A CN201710194235.2A CN201710194235A CN106972873A CN 106972873 A CN106972873 A CN 106972873A CN 201710194235 A CN201710194235 A CN 201710194235A CN 106972873 A CN106972873 A CN 106972873A
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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
Abstract
The present invention relates to a kind of polymerization of mobile terminal up-link carrier and WIFI co-channel interference suppression methods and system, working frequency range including obtaining mobile terminal, judge whether the mobile terminal is operated in the up-link carrier polymerization state of default frequency range, if so, the polymerization carrier signal then formed after up-link carrier polymerization filters out the polymerization carrier signal intermodulation interference signal overlapping with WIFI frequency ranges before reaching antenna；Up-link carrier is polymerize to the intermodulation interference signal overlapping with WIFI frequency ranges produced to filter out, the quality that WIFI receives signal is improved.
Description
Technical field
The present invention relates to technology for radio frequency field, more particularly to a kind of mobile terminal up-link carrier polymerization is same with WIFI
Frequency disturbance restraining method and system.
Background technology
With the development of the mobile terminals such as mobile phone, PAD, requirement more and more higher of the client to its mobile terminal, especially upper
The demand for passing the business scenarios such as video, upload pictures, video calling surges so that user is to the requirement of mobile terminal upstream rate
More and more higher.Up-link carrier polymerization turns into the inevitable choice that operator faces the future, and can increase substantially the use body of user
Test.
But, increasing considerably for radio frequency band will necessarily introduce identical or coexistence of adjacent frequency bands problem, with LTE (Long
Term Evolution, Long Term Evolution) up-link carrier polymerization and WIFI of the frequency range for Band (frequency range) 5 and Band12
Exemplified by 2.4G coexists, operating frequency range 824MHz~849MHz of Band5 up-link carriers, the work frequency of Band12 up-link carriers
Rate scope 699MHz~716MHz, WIFI2.4G operating frequency range are 2402MHz~2487MHz.As Band5 and Band12
Up-link carrier polymerize with WIFI 2.4G while when working, the polymerization carrier wave produced after the polymerization of Band5 and Band12 up-link carriers is believed
Number frequency range and WIFI 2.4G frequency range be bound to overlap, if not having good treatment measures to circuit, the polymerization is carried
Ripple signal will necessarily be received to WIFI 2.4G signal and interfered.
The content of the invention
Based on this, it is necessary to provide a kind of polymerization of mobile terminal up-link carrier and WIFI co-channel interference suppression methods and be
System, is effectively filtered out because up-link carrier polymerize the WIFI interference signals produced, improves the quality that WIFI receives signal.
On the one hand, the present invention proposes a kind of mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression methods, including：
Obtain the working frequency range of mobile terminal；
Judge whether the mobile terminal is operated in the up-link carrier polymerization state of default frequency range；
If so, the polymerization carrier signal then formed after up-link carrier polymerization filters out the polymerization before reaching antenna
The carrier signal intermodulation interference signal overlapping with WIFI frequency ranges.
In one of the embodiments, the intermodulation interference signal is：
The intermodulation overlapping with WIFI frequency ranges produced when after the up-link carrier polymerization of default frequency range by duplexer module
Interference signal.
In one of the embodiments, it is described to filter out the polymerization carrier signal Intermodulation Interference letter overlapping with WIFI frequency ranges
Number the step of be specially：The intermodulation interference signal is filtered out by wave filter, the signal frequency range that the wave filter can pass through is 0-
2025MHz。
In one of the embodiments, it is described to determine that mobile terminal is operated in the up-link carrier polymerization state of default frequency range
Before step, in addition to：
Judge whether mobile terminal is operated in the up-link carrier polymerization state of default frequency range, if it is not, not carried to the polymerization
Ripple signal is filtered processing.
In one of the embodiments, the up-link carrier polymerization state of the default frequency range is operated in including mobile terminal
LTE frequency ranges are Band5 and Band12 up-link carrier polymerization state, and the frequency with WIFI 2.4 is produced after the up-link carrier polymerization
The overlapping intermodulation interference signal of section.
On the other hand, the present invention proposes a kind of mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression systems, bag
Carrier aggregation circuit and antenna are included, the carrier aggregation circuit is used to condense together the up-link carrier of different frequency range, exported
It polymerize carrier signal, it is characterised in that also include：
Wave filter, connection is described between the carrier aggregation circuit and antenna, the up load for filtering out default frequency range
The intermodulation interference signal overlapping with WIFI frequency ranges produced after ripple polymerization；
Control module, the working frequency range for obtaining mobile terminal judges whether the mobile terminal is operated in default frequency
The up-link carrier polymerization state of section, and when mobile terminal is operated in the up-link carrier polymerization state of the default frequency range, control
The wave filter filters out the intermodulation interference signal.
In one of the embodiments, in addition to duplexer module, the input connection institute of the duplexer module
The output end of carrier aggregation circuit is stated, the output end of the duplexer module connects the input of the wave filter, described poly-
Carrier signal is closed by producing intermodulation interference signal after the duplexer module.
In one of the embodiments, the control module includes central processing unit and gate-controlled switch, the gate-controlled switch
The two ends of the wave filter are connected, the central processing unit connects the control end of the gate-controlled switch；
When the control module is operated in the up-link carrier polymerization state of the default frequency range specifically for mobile terminal, break
The gate-controlled switch is opened, controls the wave filter to filter out the intermodulation interference signal；The mobile terminal is not operate at described pre-
If during the up-link carrier polymerization state of frequency range, closing the gate-controlled switch and causing the wave filter to be short-circuited.
In one of the embodiments, in addition to transceiver and power amplifier, the transceiver and the center processing
Device is connected, and the output end of the transceiver connects the input of the power amplifier, and the output end of the power amplifier connects
Connect the input of the carrier aggregation circuit.
In one of the embodiments, the control module for mobile terminal be operated in LTE frequency ranges for Band5 and
During Band12 up-link carrier polymerization state, the wave filter is controlled to be opened after filtering out the up-link carrier polymerization by the antenna
Close the intermodulation interference signal overlapping with WIFI 2.4 frequency range produced during module.
The polymerization of mobile terminal up-link carrier and WIFI co-channel interference suppression methods and the system of the present invention, including judge movement
Whether terminal is operated in the up-link carrier polymerization state of default frequency range, if so, what is then formed after up-link carrier polymerization is poly-
Close and the polymerization carrier signal intermodulation interference signal overlapping with WIFI frequency ranges is filtered out before carrier signal reaches antenna；Will be up
The intermodulation interference signal overlapping with WIFI frequency ranges that carrier aggregation is produced is filtered out, and improves the quality that WIFI receives signal.
Brief description of the drawings
Fig. 1 is the polymerization of mobile terminal up-link carrier and the flow chart of WIFI co-channel interference suppression methods in an embodiment；
Fig. 2 is the polymerization of mobile terminal up-link carrier and the flow chart of WIFI co-channel interference suppression methods in another embodiment；
Fig. 3 is the polymerization of mobile terminal up-link carrier and the structure chart of WIFI co-channel interference suppression systems in an embodiment；
Fig. 4 is the polymerization of mobile terminal up-link carrier and the structure chart of WIFI co-channel interference suppression systems in another embodiment；
Fig. 5 is the up-link carrier aggregate combinations of default frequency range in an embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Referring to Fig. 1, Fig. 1 is the polymerization of mobile terminal up-link carrier and the stream of WIFI co-channel interference suppression methods in an embodiment
Cheng Tu.
In the present embodiment, mobile terminal up-link carrier polymerization includes with WIFI co-channel interference suppression methods：
S101, obtains the working frequency range of mobile terminal.
S102, judges whether the mobile terminal is operated in the up-link carrier polymerization state of default frequency range.
Mobile terminal, such as mobile phone, PAD, typically all have WIFI communication function and mobile communication function, such as mobile phone, its
The communication day of the mobile communication signals such as the WIFI antennas for realizing transmitting-receiving WIFI signal, and transmitting-receiving 3G/4G is respectively arranged with casing
Line, with the popularization and development of mobile phone, requirement more and more higher of the user to mobile phone, up-link carrier polymerization can effectively increase on
Row bandwidth, accelerates the speed that network is uploaded, increases substantially the usage experience of user.
At present, the up-link carrier used in mobile phone is a lot, and main is the upper of Band1~Band44 including LTE band limits
Row carrier wave, the up-link carrier of these different frequency ranges can produce the broader polymerization carrier signal of frequency range by a variety of polymerization methodses,
Upstream bandwidth is improved, but due to the presence of nonlinear device in mobile phone, referring to Fig. 4, such as duplexer module, polymerize carrier signal
Intermodulation interference signal can be produced after by nonlinear duplexer module, the main component in the intermodulation interference signal is three
Rank intermodulation interference signal, if the third order intermodulation interference signal has overlapping with the frequency range of WIFI 2.4G signals, in addition WIFI antennas and
Isolation between communication antenna is limited, and the third order intermodulation interference signal receives the matter of signal by WIFI 2.4G are directly influenced
Amount.
The working frequency range of mobile terminal is read, judges whether mobile terminal is operated in the up-link carrier polymerization shape of default frequency range
State, if the polymerization carrier signal after polymerization passes through the intermodulation interference signal produced during nonlinear device, predominantly third order intermodulation is done
The WIFI signal that signal and the mobile phone can be received is disturbed, such as WIFI 2.4G or WIFI5G frequency range has overlapping, by the polymerization carrier wave
The corresponding up-link carrier of signal is set to the up-link carrier of default frequency range.
S103, if so, the polymerization carrier signal then formed after up-link carrier polymerization filters out institute before reaching antenna
State the polymerization carrier signal intermodulation interference signal overlapping with WIFI frequency ranges.
For example, LTE frequency ranges are Band5 and Band12 up-link carrier, wherein, the centre frequency F1 of Band5 up-link carriers
Centre frequency F2=713.5MHz, the WIFI 2.4G of=846.5MHz, Band12 up-link carrier operating frequency range, i.e. frequency
Section is 2402MHz~2487MHz.The 3 rank intermodulation interference signals that the two up-link carriers are produced after nonlinear device have 2F1
± F2, tetra- kinds of frequency components of 2F2 ± F1, the centre frequency F=2F1+F2=of one of third order intermodulation interference signal
2406.5MHz, the frequency falls in WIFI 2.4G frequency range.
And, the corresponding input power IIP3 of third order intermodulation intercept point of current duplexer module is 60dBm or so, with
Exemplified by 60dBm, when above-mentioned two up-link carrier passes through nonlinear duplexer module, carried if Band5 and Band12 is up
Ripple is transmitted into duplexer module with power 24dBm, and it is Pin to remember the power.Now, the polymerization exported by duplexer module
The watt level of third order intermodulation interference signal meets formula IIP3=Pin+ (Pin-Pim3)/2 in carrier signal, wherein, three ranks
Power P im3=Pin-2 (IIP3-Pin)=- 48dBm of intermodulation interference signal, due to the limitation of design space, above-mentioned WIFI days
Isolation between line and communication antenna is 20dB or so, by taking 20dB as an example, and the power is believed for -48dBm third order intermodulation interference
After number being emitted through communication antenna, the power at WIFI antennas is -68dBm, and power ratio WIFI2.4G reception is sensitive
Degree is also big, i.e., also bigger than the signal intensity that WIFI 2.4G can be received, the frequency of the third order intermodulation interference signal falls again
In WIFI 2.4G frequency range, therefore very big interference will be caused to WIFI 2.4G reception signal.
By the up load of the intermodulation interference signal overlapping with WIFI frequency ranges of generation during duplexer module after above-mentioned polymerization
Ripple can be other combinations, true according to the frequency range whether centre frequency of the third order intermodulation interference signal of its generation fall into WIFI
Fixed, referring to Fig. 5, the third order intermodulation produced when after the up-link carrier polymerization shown in Fig. 5 form by duplexer module is done
Interference can be produced to WIFI 2.4G by disturbing signal, and the WIFI signal can also be WIFI 5G, whether judge polymerization carrier signal
The analysis method that interference is produced to it is identical with WIFI2.4G.
The intermodulation interference signal is filtered out by wave filter, the wave filter can be low pass filter, continue above-mentioned example,
Because WIFI 2.4G frequency range is 2402MHz~2487MHz, the signal frequency range that can pass through wave filter is set to 0-
2025MHz, can effectively filter out Band5 up-link carriers and Band12 up-link carriers are produced after duplexer module three
Rank intermodulation interference signal, retains the fundamental wave component of up-link carrier, while ensureing that WIFI receives the quality of signal, same above-mentioned side
The third order intermodulation that produces is done when method can also be filtered out after up-link carrier polymerization shown in Fig. 5 form by duplexer module
Disturb signal.
To sum up, above-mentioned mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression methods, will be up by wave filter
The intermodulation interference signal overlapping with WIFI frequency ranges produced when after carrier aggregation by duplexer module is filtered out, predominantly three ranks
Intermodulation interference signal, retains the fundamental wave component of up-link carrier, while ensureing that WIFI receives the quality of signal.
Referring to Fig. 2, Fig. 2 is the polymerization of mobile terminal up-link carrier and WIFI co-channel interference suppression methods in another embodiment
Flow chart.
In the present embodiment, mobile terminal up-link carrier polymerization includes with WIFI co-channel interference suppression methods：
S201, sends up-link carrier.Mobile terminal, such as mobile phone send up-link carrier by transceiver, in a certain fixed time
The up-link carrier can for one, two or more, two or more up-link carriers carry out uplink simultaneously
When, it is necessary to carry out carrier aggregation processing.
S202, judges whether mobile terminal is operated in the up-link carrier polymerization state of default frequency range, in this way, into step
S203, if it is not, into step S204.
During uplink, in order to realize bigger bandwidth, mobile phone can be carried out to the up-link carrier of different frequency range
Specific combination, i.e. carrier aggregation, before handling polymerization carrier signal, first determine whether the up load that transceiver is sent
Whether ripple is the up-link carrier (such as the up-link carrier aggregate combinations shown in the form of Fig. 5) for presetting frequency range.
S203, before the polymerization carrier signal formed after up-link carrier polymerization reaches antenna, filters out the polymerization
The carrier signal intermodulation interference signal overlapping with WIFI frequency ranges.
S204, is not filtered processing to the polymerization carrier signal.
If the up-link carrier that transceiver is sent is not the up-link carrier of the default frequency range, show the up-link carrier after polymerisation
The frequency for the WIFI signal that the intermodulation interference signal of generation, the predominantly frequency range of third order intermodulation interference signal can be received with the mobile phone
Section will not produce interference, it is not necessary to be filtered processing to the polymerization carrier signal, protect without overlapping to the reception of WIFI signal
The power output of barrier polymerization carrier signal.
To sum up, above-mentioned mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression methods, first send to transceiver
Up-link carrier polymerization state is judged, if it is not the up-link carrier polymerization state of default frequency range, carrier wave letter is not polymerize to it
Processing number is filtered, the transmission power of polymerization carrier signal is ensured, if it is up-link carrier polymerization state of default frequency range, its
Polymerization carrier signal can produce the intermodulation interference signal with WIFI bandwidth overlays after nonlinear duplexer module, lead to
Wave filter filters out the intermodulation interference signal, retains the fundamental wave component of up-link carrier, while ensureing that WIFI receives the matter of signal
Amount.
Referring to Fig. 3, Fig. 3 is the polymerization of mobile terminal up-link carrier and the knot of WIFI co-channel interference suppression systems in an embodiment
Composition.
In the present embodiment, mobile terminal up-link carrier polymerization includes with WIFI co-channel interference suppression systems：
Carrier aggregation circuit 10 and antenna 20, the carrier aggregation circuit 10 are used to the up-link carrier of different frequency range polymerizeing
Together, output polymerization carrier signal.The antenna 20 is above-mentioned communication antenna.
The system also includes：
Wave filter 11, is connected between the carrier aggregation circuit 10 and antenna 20, for filtering out the up of default frequency range
The intermodulation interference signal overlapping with WIFI frequency ranges produced after carrier aggregation.
Control module 12, the working frequency range for obtaining mobile terminal judges whether the mobile terminal is operated in default
The up-link carrier polymerization state of frequency range, and when mobile terminal is operated in the up-link carrier polymerization state of the default frequency range, control
Make the wave filter 11 and filter out the intermodulation interference signal.
Referring to Fig. 4, Fig. 4 is the polymerization of mobile terminal up-link carrier and WIFI co-channel interference suppression systems in another embodiment
Structure chart.
On the basis of above-described embodiment, mobile terminal up-link carrier polymerization is also wrapped with WIFI co-channel interferences suppression system
Include：
Duplexer module 13, the input of the duplexer module 13 connects the output of the carrier aggregation circuit 10
End, the output end of the duplexer module 13 connects the input of the wave filter 11, due to the duplexer module 13
Nonlinear characteristic, the polymerization carrier signal after the duplexer module 13 by producing intermodulation interference signal.
Control module 12 includes central processing unit 121 and gate-controlled switch 122, and the gate-controlled switch 122 connects the filtering
The two ends of device 11, the central processing unit 121 connects the control end of the gate-controlled switch 122.
When the control module 12 is operated in the up-link carrier polymerization state of the default frequency range specifically for mobile terminal,
The polymerization carrier signal of up-link carrier formation passes through mutual overlapping with WIFI frequency ranges of generation after the duplexer module 13
Interference signal is adjusted, the gate-controlled switch 122 is disconnected, controls the wave filter 11 to filter out the intermodulation interference signal.
When the control module 12 is additionally operable to mobile terminal and is not operate at the up-link carrier polymerization state of the default frequency range, close
Close the gate-controlled switch 122.
The system also includes transceiver 14 and power amplifier 15, the transceiver 14 and the central processing unit 121 pairs
To connection, the output end of the transceiver 14 connects the input of the power amplifier 15, the power amplifier 15 it is defeated
Go out the input of the end connection carrier aggregation circuit 10.
The up-link carrier polymerization of non-default frequency range, it polymerize carrier signal will not produce when by duplexer module 13
The intermodulation interference signal overlapping with WIFI frequency ranges, it is not necessary to processing is filtered to it, now central processing unit 121 control this can
Control switch 122 is closed, and by the short circuit of wave filter 11, polymerization carrier signal is directly launched by communication antenna, not to WIFI
In the case of receiving signal generation interference, the transmission power of polymerization carrier signal is ensured, reduces the power consumption of power amplifier 15.
To sum up, above-mentioned mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression systems, first send to transceiver 14
Up-link carrier polymerization state judged, if its be non-default frequency range up-link carrier polymerization state, by the short circuit of wave filter 11,
Directly polymerization carrier signal is launched by antenna, the transmission power of polymerization carrier signal is ensured, reduces power amplifier
15 power consumption, if it is the up-link carrier polymerization state of default frequency range, it polymerize carrier signal and opened by nonlinear antenna
The intermodulation interference signal with WIFI bandwidth overlays can be produced by closing after module 13, the control gate-controlled switch of central processing unit 121 disconnects, and leads to
Wave filter 11 filters out the intermodulation interference signal, retains the fundamental wave component of up-link carrier, while ensureing that WIFI receives signal
Quality.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression methods, it is characterised in that including：
Obtain the working frequency range of mobile terminal；
Judge whether the mobile terminal is operated in the up-link carrier polymerization state of default frequency range；
If so, the polymerization carrier signal then formed after up-link carrier polymerization filters out the polymerization carrier wave before reaching antenna
The signal intermodulation interference signal overlapping with WIFI frequency ranges.
2. according to the method described in claim 1, it is characterised in that the intermodulation interference signal is：
The Intermodulation Interference overlapping with WIFI frequency ranges produced when after the up-link carrier polymerization of default frequency range by duplexer module
Signal.
3. according to the method described in claim 1, it is characterised in that described to filter out the polymerization carrier signal and WIFI frequency range weights
The step of folded intermodulation interference signal is specially：The intermodulation interference signal is filtered out by wave filter, the wave filter can pass through
Signal frequency range be 0-2025MHz.
4. according to the method described in claim 1, it is characterised in that the determination mobile terminal is operated in the up of default frequency range
Before the step of carrier aggregation state, in addition to：
Judge whether mobile terminal is operated in the up-link carrier polymerization state of default frequency range, if it is not, not to the polymerization carrier wave letter
Number it is filtered processing.
5. according to the method described in claim 1, it is characterised in that the up-link carrier polymerization state of the default frequency range includes moving
Dynamic terminal works produced after the up-link carrier polymerization state that LTE frequency ranges are Band5 and Band12, the up-link carrier polymerization with
The overlapping intermodulation interference signal of WIFI 2.4 frequency range.
6. a kind of mobile terminal up-link carrier polymerization and WIFI co-channel interference suppression systems, including carrier aggregation circuit and antenna,
The carrier aggregation circuit is used to condense together the up-link carrier of different frequency range, and output polymerization carrier signal, its feature exists
In, in addition to：
Wave filter, connection is described between the carrier aggregation circuit and antenna, and the up-link carrier for filtering out default frequency range gathers
The intermodulation interference signal overlapping with WIFI frequency ranges produced after conjunction；
Control module, the working frequency range for obtaining mobile terminal, judges whether the mobile terminal is operated in default frequency range
Up-link carrier polymerization state, and when mobile terminal is operated in the up-link carrier polymerization state of the default frequency range, control is described
Wave filter filters out the intermodulation interference signal.
7. system according to claim 6, it is characterised in that also including duplexer module, the duplexer module
Input connect the output end of the carrier aggregation circuit, the output end of the duplexer module connects the wave filter
Input, the polymerization carrier signal after the duplexer module by producing intermodulation interference signal.
8. system according to claim 6, it is characterised in that the control module includes central processing unit and controllable opened
Close, the gate-controlled switch connects the two ends of the wave filter, the central processing unit connects the control end of the gate-controlled switch；
When the control module is operated in the up-link carrier polymerization state of the default frequency range specifically for mobile terminal, institute is disconnected
Gate-controlled switch is stated, controls the wave filter to filter out the intermodulation interference signal；The mobile terminal is not operate at the default frequency
During the up-link carrier polymerization state of section, close the gate-controlled switch and the wave filter is short-circuited.
9. system according to claim 8, it is characterised in that also including transceiver and power amplifier, the transceiver
With central processing unit connection, the output end of the transceiver connects the input of the power amplifier, and the power is put
The output end of big device connects the input of the carrier aggregation circuit.
10. system according to claim 7, it is characterised in that the control module is operated in LTE frequencies for mobile terminal
When section is Band5 and Band12 up-link carrier polymerization state, the wave filter is controlled to be passed through after filtering out the up-link carrier polymerization
Cross the intermodulation interference signal overlapping with WIFI 2.4 frequency range produced during the duplexer module.
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| CN112290971A (en) * | 2020-09-29 | 2021-01-29 | 深圳市广和通无线股份有限公司 | Circuit, control method, device, system and electronic equipment for suppressing intermodulation distortion |
| CN114258049A (en) * | 2021-12-20 | 2022-03-29 | 中国电信股份有限公司 | Passive intermodulation interference suppression method, terminal, base station and storage medium |
| CN114337879A (en) * | 2021-12-30 | 2022-04-12 | 京信射频技术(广州)有限公司 | Multi-system access platform and communication system |
| CN114389638A (en) * | 2020-10-19 | 2022-04-22 | Oppo广东移动通信有限公司 | Power amplifier module, control method, terminal and computer storage medium |
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