CN104378138B - A kind of method, device and multi-mode and multi-standby communication terminal for suppressing radio frequency mutual interference - Google Patents
A kind of method, device and multi-mode and multi-standby communication terminal for suppressing radio frequency mutual interference Download PDFInfo
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- CN104378138B CN104378138B CN201410614401.6A CN201410614401A CN104378138B CN 104378138 B CN104378138 B CN 104378138B CN 201410614401 A CN201410614401 A CN 201410614401A CN 104378138 B CN104378138 B CN 104378138B
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Abstract
The invention discloses a kind of method, device and multi-mode and multi-standby communication terminal for suppressing radio frequency mutual interference.Wherein, described device includes：RF transceiver, communication processor, radio-frequency suppressor；The communication processor is used in the case of there is operated adjacent frequency range between the RF transceiver for detecting concurrent working, and the transmission signal of the RF transceiver of the concurrent working is first passed through after radio-frequency suppressor processing, then to antenna transmission；The radio-frequency suppressor is used to suppress the interference signal that the transmission signal of the RF transceiver of the concurrent working is produced.The present invention is launching frequency range and is receiving the RF transceiver of adjacent frequency bands while when working, the transmission signal of RF transceiver of pair work simultaneously suppresses, reduction eliminates the interference signal that transmission signal is produced, so as to simply and effectively ensure that while the normal work of the RF transceiver of work.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method, device and multi-mode and multi-standby for suppressing radio frequency mutual interference
Communication terminal.
Background technology
With forth generation mobile communication technology (the 4th Generation mobile communication
Technology, abbreviation 4G) it is commercial in global expansion, multi-mode and multi-standby communication terminal has become the main need of Virtual network operator
Ask, and increasingly favored by user.
Multi-mode and multi-standby communication terminal is also realized while being brought convenience to user to technology adds difficulty, multi-mode and multi-standby
Communication terminal can produce the problem of emitter is interfered with receiver, wherein out-of-band interference when multiple patterns are simultaneously standby
(clutter interference, obstruction interference) is more universal interference, and more obvious mutually interference appears in dcs
Global system for mobile communications (the Global System for of (Distributed Control System, abbreviation DCS)
Mobile Communication, abbreviation GSM) frequency range and TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) (Time Division-
Synchronous Code Division Multiple Access, abbreviation TDSCDMA) B34 frequency ranges between, Wireless Fidelity
Spend (Wireless Fidelity, abbreviation WiFi) frequency range and Long Term Evolution (Long Term Evolution, abbreviation LTE)
B40 frequency ranges between.
Prior art mainly has to the Restrain measurement of mutual interference：1. isolation between antennas is increased into more than 20dB；2. transmitting frequency
Duan Zengjia bandstop filters (trapper), such as：To B39, B40, WLAN (Wireless Local Area
Networks, abbreviation WLAN) etc. frequency range transmission signal carry out bandreject filtering；3. frequency range increase narrow band filter is received, such as：It is right
The reception signal of the frequency ranges such as DCS1800, B40, WLAN carries out narrow-band filtering.The original that existing radio frequency mutual interference as shown in Figure 1 suppresses
Manage schematic diagram.PA is power amplifier in Fig. 1；TRX is Transmit-Receive Unit, including transmitter and receiver；FILTER is wave filter；
CPU is processor.
But, above-mentioned mutual interference Restrain measurement realizes that all difficulty are big.Reduce the scheme of mutual interference by increasing isolation between antennas,
Antenna is to ensure that over the air (Over-the-Air Technology, abbreviation OTA) performance is difficult to accomplish higher
Isolation, so interference can not be completely eliminated, while the radiation resistance of antenna also has detrimental effect to radiation dispersion.It is defeated in PA
Go out end increase trapper (bandstop filter), can effectively suppress the band stray of interference source emitter generation, also, receiving
Frequency range increases narrow band filter, when there is mutual interference, reception signal is entered narrow band filter, can effectively suppress band stray
The interference of the docking collection of letters number, still, the device integration more and more higher used at present, the feelings that PA is integrated together with duplexer
Condition is commonly used, and this just makes the increase of trapper and narrow band filter receive very big limitation.
The content of the invention
It is a primary object of the present invention to provide a kind of method for suppressing radio frequency mutual interference, device and multi-mode and multi-standby communication eventually
End, the problem of difficulty is big is realized to solve existing mutual interference Restrain measurement.
Based on above-mentioned technical problem, the present invention is solved by the following technical programs.
The invention provides a kind of device for suppressing radio frequency mutual interference, including RF transceiver, communication processor, radio frequency suppresses
Device；The communication processor, for there is operated adjacent frequency range between the RF transceiver for detecting concurrent working
Under, the transmission signal of the RF transceiver of the concurrent working is first passed through after radio-frequency suppressor processing, then to antenna transmission；Institute
Radio-frequency suppressor is stated, for suppressing the interference signal that the transmission signal of RF transceiver of the concurrent working is produced.
Wherein, the communication processor is additionally operable to：Exist between the RF transceiver for being not detected by concurrent working adjacent
In the case of working frequency range, by the transmission signal of the RF transceiver of the concurrent working directly to antenna transmission.
Wherein, described device also includes：Commutator, under the control of communication processor, make RF transceiver with
Radio-frequency suppressor connects or RF transceiver is connected with antenna.
Wherein, the radio-frequency suppressor includes：Bandstop filter；Or, the radio-frequency suppressor includes：Bandpass filter
And bandstop filter.
Wherein, the working frequency range of RF transceiver includes transmitting frequency range and receives frequency range；Operated adjacent frequency range refers to：Simultaneously
In the RF transceiver of row work, the intermodulation letter of transmission signal or transmission signal in the transmitting frequency range of a RF transceiver
Number fall directly into the reception frequency range or transition frequency range of another RF transceiver.
Present invention also offers a kind of method for suppressing radio frequency mutual interference, including：Detect the RF transceiver of concurrent working
Working frequency range；If there is operated adjacent frequency range between the RF transceiver of concurrent working, first suppress the concurrent working
The interference signal that the transmission signal of RF transceiver is produced, then by the transmission signal of the RF transceiver of the concurrent working to day
Line is transmitted.
Wherein, methods described also includes：If there is operated adjacent between the RF transceiver for being not detected by concurrent working
Frequency range, then control the transmission signal of RF transceiver of the concurrent working directly to antenna transmission.
Wherein, the interference signal that the transmission signal of the RF transceiver of the concurrent working is produced is suppressed, including：Pass through band
Hinder wave filter or simultaneously by bandpass filter and bandstop filter, suppress the hair of the RF transceiver of the concurrent working
Penetrate the interference signal of signal generation.
Wherein, the working frequency range of RF transceiver includes transmitting frequency range and receives frequency range；Operated adjacent frequency range refers to：Simultaneously
In the RF transceiver of row work, the intermodulation letter of transmission signal or transmission signal in the transmitting frequency range of a RF transceiver
Number fall directly into the reception frequency range or transition frequency range of another RF transceiver.
Invention further provides a kind of multi-mode and multi-standby communication terminal, the multi-mode and multi-standby communication terminal is penetrated including above-mentioned suppression
The device of frequency mutual interference.
The present invention has the beneficial effect that：
The present invention is when the RF transceiver for launching frequency range and reception adjacent frequency bands works simultaneously, the radio frequency of pair work simultaneously
The transmission signal of transceiver is suppressed, and the interference signal of transmission signal generation is reduced or eliminate, so as to simply and effectively ensure
The normal work of the RF transceiver of work simultaneously.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the principle schematic that existing radio frequency mutual interference suppresses；
Fig. 2 is the structure chart of the device of suppression radio frequency mutual interference according to an embodiment of the invention；
Fig. 3 is the concrete structure diagram of the device of suppression radio frequency mutual interference according to an embodiment of the invention；
Fig. 4 is the concrete structure diagram of the device of suppression radio frequency mutual interference according to another embodiment of the present invention；
Fig. 5 is the flow chart of the method for suppression radio frequency mutual interference according to an embodiment of the invention.
Embodiment
Multi-mode and multi-standby communication terminal refers to that same terminal possesses a variety of communication standards, and every kind of communication standard is referred to as a kind of mould
Formula.Every kind of communication standard is comprising its corresponding transmitting frequency range and receives frequency range, and every kind of communication standard correspondence is penetrated using one
Frequency transceiver realizes the transmitting-receiving of signal of communication.RF transceiver includes Receiver And Transmitter, or, by receiver and transmitting
The integrated transceiver of machine is used as RF transceiver.Receiver is used to receive the signal for belonging to and receiving in band limits；Emitter
For launching the signal belonged in transmitting band limits.
The main thought of the present invention is：Two RF transceivers of transmitting frequency range and reception adjacent frequency bands work simultaneously when
(bilateral), the transmission signal to two RF transceivers all suppresses, and reduces or eliminates adjacent transmitting frequency range and receive frequency
The interference for the transmission signal docking collection of letters number transmitted in section, and the interference between the transmission signal of two RF transceivers, from
And simply and effectively ensure that the normal work of two RF transceivers.Wherein, the transmitting frequency range of two RF transceivers and connect
Adjacent frequency bands are received, that is to say that the working frequency range of two RF transceivers is adjacent, adjacent basis for estimation is：One RF transceiver
The interference signal that transmission signal or the transmission signal are produced, falls into the reception frequency range or transition frequency range of another RF transceiver,
And then the signal transmitted in the reception frequency range is interfered.Interference signal includes intermodulation signal, spurious signal etc..
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
There is provided a kind of device for suppressing radio frequency mutual interference for embodiments in accordance with the present invention.As shown in Fig. 2 Fig. 2 is according to this
Invent the structure chart of the device of the suppression radio frequency mutual interference of an embodiment.
The device includes：RF transceiver, communication processor, radio-frequency suppressor, front end module, commutator.
RF transceiver, for the working frequency range according to selection, transmission signal and reception signal.Further, radio frequency is received
Sending out device includes Multi-Frequency, when RF transceiver work, and selection current demand signal most strong working frequency range, which carrys out sending and receiving, to be believed
Number.
Communication processor, the working frequency range of the RF transceiver for detecting concurrent working；If detecting concurrent working
RF transceiver between there is operated adjacent frequency range, then by the transmission signal of the RF transceiver of concurrent working, first pass through and penetrate
After the processing of frequency suppressor, then to antenna transmission；If there is operated adjacent between the RF transceiver for being not detected by concurrent working
Frequency range, then by the transmission signal of the RF transceiver of concurrent working directly to antenna transmission.Further, communication processor can be with
Commutator is controlled, to control the transmission signal whether by radio-frequency suppressor, in other words, commutator is in communication processor
Control under, RF transceiver is connected with radio-frequency suppressor or RF transceiver is connected with antenna.
Radio-frequency suppressor, for suppressing the interference signal that the transmission signal of RF transceiver of concurrent working is produced.Enter one
Step ground, radio-frequency suppressor is mainly used in suppressing the transmission signal transmitted in operated adjacent frequency range to being transmitted in operated adjacent frequency range
Receive the interference of signal.Radio-frequency suppressor includes bandstop filter or including bandpass filter and bandstop filter.Preferably,
Radio-frequency suppressor includes bandpass filter and bandstop filter.Wherein, bandpass filter is used to suppress band stray signal, band resistance
Wave filter is used to suppress the spurious signal in band.
In the present embodiment, suppressing the device of radio frequency mutual interference also includes：Front end module, for the transmitting letter to RF transceiver
Number it is amplified, and under the control of communication processor, the transmission signal after amplification is transmitted to radio-frequency suppressor or to antenna
Transmission.
The present embodiment, needs to carry out narrow-band filtering or bandpass filtering for receiving signal.When reception frequency range and transmitting frequency range
Adjacent RF transceiver works simultaneously when, then need to carry out narrow-band filtering to reception frequency range therein, it is operated in arrowband,
Increase the interval between adjacent reception frequency range and transmitting frequency range, interference of the reduction transmitting frequency range to reception frequency range.When reception frequency range
When being worked when different with the RF transceiver of transmitting adjacent frequency bands, need to only bandpass filtering be carried out to reception frequency range therein,
To filter out the out-of-band interference signal for receiving frequency range.
Specifically, the working frequency range of RF transceiver includes transmitting frequency range and receives frequency range, and RF transceiver is in transmitting
Frequency range transmission signal, is receiving UHF band reception signal.
Operated adjacent frequency range, refers to：In the RF transceiver of concurrent working, in the transmitting frequency range of a RF transceiver
Transmission signal or the intermodulation signal of transmission signal fall directly into the reception frequency range or transition frequency range of another RF transceiver.
So, the intermodulation signal of transmission signal or transmission signal just causes interference to receiving the reception signal in frequency range.
Interference includes according to frequency categorization：
1st, co-channel interference：Interference source transmission signal falls directly into disturbed source and receives frequency range.For example：GSM900TX(880-
915MHz) CDMA BC0RX (869-894MHz) are disturbed.
2nd, intermediate zone is disturbed：Interference source transmission signal is fallen into disturbed source filter transition frequency range.For example：LTE
B39TX (1880-1920MHz) is disturbed DCS1800RX (1805-1880MHz)；LTE B40 (2300-2400MHz) are to BT/
WLAN (2400-2485MHz) is disturbed.
3rd, clutter interference：The spurious signal of interference source transmission signal falls into disturbed source and receives frequency range.
Concurrent working and there is the RF transceiver of operated adjacent frequency range in sending and receiving signal process, transmitting frequency range and
The transmitting frequency range that can be produced in interference, operated adjacent frequency range between transmitting frequency range can also cause to do to reception frequency range adjacent thereto
Disturb.So, the present embodiment is suppressed using radio-frequency suppressor to the transmission signal in transmitting frequency range, prevents its interference produced
Signal is interfered to other transmittings or reception signal.
Two kinds of specific embodiments are given below to describe the present invention.
Embodiment one, as shown in figure 3, Fig. 3 is the structure of the device of suppression radio frequency mutual interference according to an embodiment of the invention
Schematic diagram.
In the present embodiment, suppressing the device of radio frequency mutual interference includes：Communication processor CPU, the first RF transceiver
Transceiver1, the second RF transceiver Transceiver2；And the wave filter group being correspondingly arranged for Transceiver1
1st, front end module 1, commutator 1, radio-frequency suppressor A and antenna 1；It is the wave filter group 2 that is correspondingly arranged for Transceiver2, preceding
Hold module 2, commutator 2, radio-frequency suppressor D and antenna 2.
Transceiver1 includes 3 working frequency range, respectively Band A, Band B and Band C.Transceiver2
Including 3 working frequency range, respectively Band D, Band E and Band F.Wherein, the Band A in Transceiver1 and
Band D in Transceiver2 are operated adjacent frequency range, and Band A transmitting frequency range and Band D reception frequency range phase
It is adjacent.
Wave filter group 1 includes：For Band A set bandpass filter A, be Band B set bandpass filter B and
The bandpass filter C set for Band C.
Wave filter group 2 includes：For Band D set bandpass filter D, be Band E set bandpass filter E and
The bandpass filter F set for Band F.Also include the narrow band filter D being correspondingly arranged for Band D in wave filter group 2.
In front end module 1 and front end module 2, all including power amplifier PA and duplexer.Power amplifier PA is used for
Amplify transmission signal；Duplexer is used to distinguish the frequency range received belonging to signal, and under the control of cpu, by the reception signal
Corresponding with its frequency range bandpass filter or narrow band filter are transmitted into wave filter group.Wherein, when existing between working frequency range
During interference, duplexer transmits the reception signal in operated adjacent frequency range to narrow band filter, when not deposited between working frequency range
In interference, duplexer is transmitted signal is received to bandpass filter.Because, the present embodiment one, only Band A and Band
There is interference in D, so, narrow band filter A corresponding with Band A is only set in wave filter group 1, only set in wave filter group 2
Put narrow band filter D corresponding with Band D.
In radio-frequency suppressor A and radio-frequency suppressor D, all including bandstop filter and bandpass filter device.
DPDT1 includes 4 contacts, RF1 connections front end module 1, RF2 connection radio-frequency suppressors A output end, RF3 connections
Radio-frequency suppressor A input, RF4 connections antenna 1.
DPDT2 includes 4 contacts, RF1 connections front end module 2, RF2 connection radio-frequency suppressors D output end, RF3 connections
Radio-frequency suppressor D input, RF4 connections antenna 2.
According to the structure of the present embodiment one, the sending and receiving process to signal is illustrated.
During single-pass, it that is to say and worked when the Band A in Transceiver1 are different with the Band D in Transceiver2
Situation.Mutual interference problem is not present in two RF transceivers of operated adjacent frequency range.CPU control Transceiver1 and
Each self-corresponding DPDT switches of Transceiver2 so that the connected mode switched in DPDT1 and DPDT2 is all：RF1 and RF4
Connection, RF2 and RF3 connections, so, front end module 1 and front end module 2 are connected directly to antenna, can reduce signal power consumption
And Insertion Loss, and now radio-frequency suppressor A and radio-frequency suppressor D do not work.For example：Transceiver1 is worked with Band A,
Then when signaling, with Band A transmitting frequency range transmission signal, transmission signal passes through front end module 1, DPDT1 (RF1 connections
RF4 antenna 1) is reached, is launched by antenna 1；In the collection of letters, antenna 1 receives signal, and the reception signal passes through
The duplexer that DPDT1 (RF1 connections RF4) is reached in front end module 1, front end module 1 analyzes the reception signal for Band A
Reception frequency range, then under the control of cpu, bandpass filter A of the reception signal into wave filter group 1 is sent, for pair
Receive signal and carry out bandpass filtering, the reception signal after bandpass filtering is transferred to Transceiver1.
During bilateral, it that is to say what the Band D in the Band A and Transceiver2 in Transceiver1 worked simultaneously
Situation.Band A transmitting frequency range and the reception adjacent frequency bands of the Band D in Transceiver2 in Transceiver1,
There are problems that mutual interference between Transceiver1 and Transceiver2.
During bilateral transmission signal, CPU control commutators so that radio-frequency suppressor A and radio-frequency suppressor D join transmitting letter
Number AF panel.During Transceiver1 transmission signals, Transceiver1 amplification of the transmission signal through front end module 1
Afterwards, by DPDT1 (RF1 connections RF3) arrival radio-frequency suppressor A, progress AF panel, the transmission signal after AF panel,
Antenna 1 is reached by DPDT1 (RF2 connections RF4).During Transceiver2 transmission signals, Transceiver2 transmission signal
After the amplification of front end module 2, radio-frequency suppressor D is reached by DPDT2 (RF1 connections RF3), AF panel is carried out, through interference
Transmission signal after suppression, antenna 2 is reached by DPDT2 (RF2 connections RF4).
When bilateral receives signal, CPU control commutators so that radio-frequency suppressor A and radio-frequency suppressor D are not involved in connecing
Penetrate signal.When Transceiver1 receives signal, the reception signal that antenna 1 is received is reached by DPDT1 (RF4 connections RF1)
Front end module 1, front end module 1 analyzes the frequency range belonging to the reception signal, if belonging to Band A, under the control of cpu, by this
Receive signal be transferred to bandpass filter A, the reception signal after bandpass filtering by bandpass filter A transmit to
Transceiver1.When Transceiver2 receives signal, the reception signal that antenna 2 is received passes through DPDT2 (RF4 connections
RF1), front end module 2 is reached, front end module 2 analyzes the frequency range belonging to the reception signal, if belonging to Band D, in CPU control
Under system, the reception signal is transferred to narrow band filter D, the reception signal after narrow-band filtering by narrow band filter D transmit to
Transceiver2.Because Band D and Band A are adjacent, the reception signal in Band D can be by the transmission signal in Band A
Interference, so, allow Band D to be operated in arrowband, make there are certain intervals between Band D and Band A, be no longer operated adjacent
Frequency range, so as to reach the purpose for suppressing interference.
In the case of single-pass or bilateral, because Band B, Band C, Band E and Band F are not present and its phase
Adjacent working frequency range, so, when Band B, Band C, Band E and Band F work, either transmission signal still receives letter
Number, CPU controls the connected mode of commutator to connect RF3 for RF1 connections RF4, RF2, radio-frequency suppressor is not worked.
Embodiment two, as shown in figure 4, Fig. 4 is the tool of the device of suppression radio frequency mutual interference according to another embodiment of the present invention
Body structure chart.
In embodiment two, except the Band D in Transceiver1 Band A and Transceiver2 are operated adjacent frequency
Outside section, the Band E in Transceiver1 Band B and Transceiver2 are also operated adjacent frequency range, and Band
B reception frequency range and Band E transmitting adjacent frequency bands, therefore, in embodiment two, on the basis of the structure of embodiment one,
Corresponding narrow band filter B and radio-frequency suppressor B is provided with for Transceiver1 Band B, is Transceiver2's
Band E are provided with corresponding radio-frequency suppressor E.
DPDT1 includes 6 contacts, RF1 connections front end module 1, RF2 connection radio-frequency suppressors B output end, RF3 connections
Radio-frequency suppressor A output end, RF4 connection radio-frequency suppressors A input, RF5 connection radio-frequency suppressors B input, RF6
Connect antenna 1.
DPDT2 includes 6 contacts, RF1 connections front end module 2, RF2 connection radio-frequency suppressors E output end, RF3 connections
Radio-frequency suppressor D output end, RF4 connection radio-frequency suppressors D input, RF5 connection radio-frequency suppressors E input, RF6
Connect antenna 2.
According to the structure of the present embodiment two, the transmitting-receiving process to signal is illustrated.
During single-pass, work when Band A in Transceiver1 are different with the Band D in Transceiver2 that is to say
The situation that the Band E in Band B and Transceiver2 in work, Transceiver1 work when also different.Operated adjacent
Mutual interference problem is not present in two RF transceivers of frequency range.It is similar to the process of embodiment one during single-pass, CPU controls
Each self-corresponding DPDT switches of Transceiver1 and Transceiver2 so that the connected mode switched in DPDT1 and DPDT2
All it is：RF1 and RF6 connections, RF2 and RF5 connections, RF3 and RF4 connections, so, front end module 1 and front end module 2 all directly connect
Antenna is connected to, now radio-frequency suppressor A, radio-frequency suppressor B, radio-frequency suppressor D and radio-frequency suppressor E do not work.For example：
Transceiver1 is worked with Band B, then when signaling, and with Band B transmitting frequency range transmission signal, transmission signal is passed through
Front end module 1, DPDT1 (RF1 connections RF6) reach antenna 1, are launched by antenna 1；In the collection of letters, antenna 1 is received
Signal, the reception signal reaches the duplexer in front end module 1, front end module 1 by DPDT1 (RF1 connections RF6) and analyzed
The reception signal is Band B reception frequency range, then under the control of cpu, by the band logical of the reception signal into wave filter group 1
Wave filter B is sent, and for docking a number progress bandpass filtering of collecting mail, the reception signal after bandpass filtering is transferred to
Transceiver1。
During bilateral, that is to say Band D in the Band A and Transceiver2 in Transceiver1 and meanwhile work,
Or the situation that the Band E in the Band B and Transceiver2 in Transceiver2 work simultaneously.Transceiver1
In Band A and Transceiver2 in Band D simultaneously work situation be referred to embodiment one, do not go to live in the household of one's in-laws on getting married herein
State.The situations about working simultaneously of the Band E in the Band B and Transceiver2 in Transceiver2 are said below
It is bright.
During bilateral transmission signal, CPU control commutators so that radio-frequency suppressor B and radio-frequency suppressor E join transmitting letter
Number AF panel.CPU controls the corresponding commutator of RF transceiver of transmission signal, and the connected mode for making commutator is
RF1 connections RF5, RF2 connect RF6.Before Transceiver1 transmission signal is transferred to during Transceiver1 transmission signals
Module 1 is held, the transmission signal after amplifying through front end module 1 reaches radio-frequency suppressor B by DPDT1 (RF1 connections RF5), through dry
The transmission signal after suppressing is disturbed, antenna 1 is reached by DPDT1 (RF2 connections RF6).During Transceiver2 transmission signals,
Transceiver2 transmission signal reaches radio-frequency suppressor after the amplification of front end module 2 by DPDT2 (RF1 connections RF5)
E, the transmission signal after AF panel reaches antenna 2 by DPDT2 (RF2 connections RF6).
When bilateral receives signal, CPU control commutators so that radio-frequency suppressor B and radio-frequency suppressor E are not involved in connecing
Penetrate signal.When Transceiver1 receives signal, the reception signal that antenna 1 is received is reached by DPDT1 (RF6 connections RF1)
Front end module 1, front end module 1 analyzes the frequency range belonging to the reception signal, if belonging to Band B, the reception signal is transferred to
Narrow band filter B, the reception signal after narrow-band filtering is transferred to Transceiver1.Transceiver2 receives signal
When, the reception signal that antenna 2 is received reaches front end module 2 by DPDT2 (RF6 connections RF1), and front end module 2 is analyzed this and connect
Frequency range belonging to the collection of letters number, if belonging to Band E, under the control of cpu, bandpass filter E is transferred to by the reception signal,
Reception signal after bandpass filtering is transferred to Transceiver2.
Present invention also offers a kind of multi-mode and multi-standby communication terminal, the multi-mode and multi-standby communication terminal includes multiple communication systems
Formula, and include the device of above-mentioned suppression radio frequency mutual interference.
By the device of the suppression radio frequency mutual interference of the present invention, it effectively can reduce or eliminate many in multi-mode and multi-standby communication terminal
Interference between individual communication standard, also, the present invention can be by commutator come the path of control signal, and realization is simple.
In the higher multi-mode and multi-standby communication terminal of integrated level, low signal interference can be dropped, RF transceiver performance is improved, communication matter is improved
Amount.
Present invention also offers a kind of method for suppressing radio frequency mutual interference.As shown in figure 5, Fig. 5 is according to an implementation of the invention
The flow chart of the method for the suppression radio frequency mutual interference of example.
Step S510, detects the working frequency range of the RF transceiver of concurrent working.
The working frequency range of each RF transceiver includes transmitting frequency range and receives frequency range.
Step S520, judges to whether there is operated adjacent frequency range between the RF transceiver of concurrent working.If so, then performing
Step S530；If it is not, then performing step S540.
The working frequency range of RF transceiver includes transmitting frequency range and receives frequency range.
Operated adjacent frequency range refers to：In the RF transceiver of concurrent working, the transmitting frequency range of a RF transceiver falls
Enter, close to or close on the reception frequency range of another RF transceiver within a preset range.
Step S530, suppresses the interference signal that the transmission signal of the RF transceiver of concurrent working is produced.Afterwards, step is performed
Rapid S540.
In the RF transceiver of the concurrent working, the transmission signal that each RF transceiver is sent will carry out interference suppression
System, for suppressing interference of the transmission signal to other transmission signals, and suppresses the transmission signal to reception adjacent thereto
The interference of the reception signal of frequency range.
By bandstop filter or simultaneously by bandpass filter and bandstop filter, suppress the concurrent working
The interference signal that the transmission signal of RF transceiver is produced.
The reception signal received for RF transceiver, then can use prior approach to receive.
Step S540, by the transmission signal transmitted in operated adjacent frequency range to antenna transmission.
If there is operated adjacent frequency range between the RF transceiver of concurrent working, first suppress penetrating for the concurrent working
The interference signal that the transmission signal of frequency transceiver is produced, then by the transmission signal of the RF transceiver of the concurrent working to antenna
Transmission.
If there is operated adjacent frequency range between the RF transceiver for being not detected by concurrent working, penetrating for concurrent working is controlled
The transmission signal of frequency transceiver is directly to antenna transmission.
Embodiments of the invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of device for suppressing radio frequency mutual interference, it is characterised in that including RF transceiver, communication processor, radio-frequency suppressor；
The communication processor is used for the presence of operated adjacent frequency range between the RF transceiver for detecting concurrent working
Under, the transmission signal of the RF transceiver of the concurrent working is first passed through after the radio-frequency suppressor processing, then is passed to antenna
It is defeated；Wherein, the operated adjacent frequency range refers to the transmitting frequency range of the RF transceiver of concurrent working and receives adjacent frequency bands；
The radio-frequency suppressor is used to suppress the interference signal that the transmission signal of the RF transceiver of the concurrent working is produced.
2. device according to claim 1, it is characterised in that the communication processor is additionally operable to：
In the case of there is operated adjacent frequency range between the RF transceiver for being not detected by concurrent working, by the concurrent working
RF transceiver transmission signal directly to antenna transmission.
3. device according to claim 2, it is characterised in that described device also includes：
Commutator, under the control of communication processor, making RF transceiver be connected with radio-frequency suppressor or making radio frequency
Transceiver is connected with antenna.
4. the device according to claim 1,2 or 3, it is characterised in that
The radio-frequency suppressor includes：Bandstop filter；Or,
The radio-frequency suppressor includes：Bandpass filter and bandstop filter.
5. the device according to claim 1,2 or 3, it is characterised in that
The working frequency range of RF transceiver includes transmitting frequency range and receives frequency range.
6. a kind of method for suppressing radio frequency mutual interference, it is characterised in that including：
Detect the working frequency range of the RF transceiver of concurrent working；
If there is operated adjacent frequency range between the RF transceiver of concurrent working, the radio frequency for first suppressing the concurrent working is received
The interference signal that the transmission signal of device is produced is sent out, then the transmission signal of the RF transceiver of the concurrent working is passed to antenna
It is defeated；Wherein, the operated adjacent frequency range refers to the transmitting frequency range of the RF transceiver of concurrent working and receives adjacent frequency bands.
7. method according to claim 6, it is characterised in that methods described also includes：
If there is operated adjacent frequency range between the RF transceiver for being not detected by concurrent working, the concurrent working is controlled
The transmission signal of RF transceiver is directly to antenna transmission.
8. the method according to claim 6 or 7, it is characterised in that suppress the hair of the RF transceiver of the concurrent working
The interference signal of signal generation is penetrated, including：
By bandstop filter or simultaneously by bandpass filter and bandstop filter, suppress the radio frequency of the concurrent working
The interference signal that the transmission signal of transceiver is produced.
9. the method according to claim 6 or 7, it is characterised in that
The working frequency range of RF transceiver includes transmitting frequency range and receives frequency range.
10. a kind of multi-mode and multi-standby communication terminal, it is characterised in that the multi-mode and multi-standby communication terminal is included in claim 1-5
Device described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN105049078B (en) * | 2015-08-07 | 2018-05-08 | 惠州Tcl移动通信有限公司 | A kind of radio-frequency unit and its communication means based on Band28 frequency ranges |
| CN105978600A (en) * | 2015-11-13 | 2016-09-28 | 乐视移动智能信息技术（北京）有限公司 | Processor and mobile terminal for supporting carrier aggregation |
| CN105871412B (en) * | 2016-05-20 | 2019-01-01 | 苏州经贸职业技术学院 | GSM DCS and LTE band39 two pass approach are realized under a kind of SVLTE mode |
| CN107820332A (en) * | 2017-11-02 | 2018-03-20 | 珠海市魅族科技有限公司 | A kind of transfer control method of mobile terminal and radiofrequency signal |
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| CN1731692A (en) * | 2005-08-09 | 2006-02-08 | 杭州斯达康通讯有限公司 | Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method |
| CN102668614A (en) * | 2009-11-17 | 2012-09-12 | 瑞典爱立信有限公司 | Coexistence of plural wireless communication transceivers in close proximity |
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| CN101068399A (en) * | 2006-11-22 | 2007-11-07 | 中兴通讯股份有限公司 | Double-mode and double-standby realizing method for TD-SCDMA/PHS single antenna cell phone |
| CN101222694A (en) * | 2007-01-09 | 2008-07-16 | 中兴通讯股份有限公司 | Double-module mobile phone for restraining radio frequency interference, method for restraining radio frequency interference |
| CN100502542C (en) * | 2007-05-15 | 2009-06-17 | 中兴通讯股份有限公司 | Double mode double standby mobile terminal for reducing GSM interference to TD-SCDMA and its realizing method |
| CN101369819B (en) * | 2008-09-24 | 2012-11-14 | 中兴通讯股份有限公司 | Mobile terminal of sharing antenna of mobile phone television and movable communication module |
| CN101394636A (en) * | 2008-10-22 | 2009-03-25 | 中兴通讯股份有限公司 | GSM/CDMA dual-mode mobile phone and method for inhibiting GC interference |
| CN202799182U (en) * | 2012-08-24 | 2013-03-13 | 东莞宇龙通信科技有限公司 | Mobile communication terminal |
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| CN1731692A (en) * | 2005-08-09 | 2006-02-08 | 杭州斯达康通讯有限公司 | Dual-mode communication terminal capable of restraining two mode signal RF crosstalk interference and restraining method |
| CN102668614A (en) * | 2009-11-17 | 2012-09-12 | 瑞典爱立信有限公司 | Coexistence of plural wireless communication transceivers in close proximity |
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