CN102510297A - Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal - Google Patents
Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal Download PDFInfo
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Abstract
The invention provides a power amplification module, a multi-mode radio frequency transceiver, a duplexer, a multi-mode terminal, and methods for transmitting and receiving a signal by the multi-mode terminal. The power amplification module comprises a control module, a low-frequency amplifier and a high-frequency amplifier, wherein the low-frequency amplifier and the high-frequency amplifier are connected with the control module; the control module is used for sending an operating mode indication signal to the low-frequency amplifier or the high-frequency amplifier according to a control signal which comes from a baseband chip; the low-frequency amplifier is used for receiving a low-frequency transmitting signal and the operating mode indication signal which is sent by the control module, amplifying the low-frequency transmitting signal in an operating mode which is indicated by the operating mode indication signal, and then outputting the low-frequency transmitting signal; and the high-frequency amplifier is used for receiving a high-frequency transmitting signal and the operating mode indication signal which is sent by the control module, amplifying the high-frequency transmitting signal in the operating mode which is indicated by the operating mode indication signal, and then outputting the high-frequency transmitting signal. By adoption of the multi-mode terminal, the occupation area of a printed circuit board (PCB) is effectively reduced.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to the method that method that a kind of power amplifier module, multi-mode radio frequency transceiver, duplexer, multimode terminal, multimode terminal transmit and multimode terminal receive signal.
Background technology
Current; There are a lot of different wireless communication systems in field of telecommunications; Adopted communication standard separately respectively; And separately operating frequency is all different with mode of operation under the distinct communication standards, as in the whole world second generation communication standard global system for mobile communications of extensive use (Global System for Mobile Communication, GSM); And third generation communication standard WCDMA (Wideband Code Division Multiple Access, the WCDMA) system of whole world popularization.For the terminal can be used in worldwide, it must support various communication standard simultaneously, and at present the most frequently used is the terminal of supporting GSM and WCDMA simultaneously.
As shown in Figure 1; Be existing GSM/WCDMA dual-mode terminal configuration diagram, this multimode terminal comprises baseband chip 100, GSM/WCDMA multi-mode radio frequency transceiving chip 200, at least one WCDMA linear power amplifier 300, GSM power amplifier 400 and at least one duplexer 500, duplexer module 600 etc.Owing to comprised the dozens of frequency range in the planning of WCDMA frequency spectrum to satisfy the demand in country variant and area; So the WCDMA terminal is if support a plurality of frequency ranges simultaneously; Just need corresponding each frequency range that corresponding WCDMA power amplifier and duplexer are set, and this moment, the duplexer module also needed corresponding increasing.
In the conventional architectures scheme that multimode terminals such as GSM/WCDMA use, find a phenomenon: radio frequency part needs a GSM power amplifier, a WCDMA linear power amplifier and a duplexer at least; If support the WCDMA multiband, number of switches in the WCDMA power amplifier that just needs to increase a plurality of corresponding frequency band and duplexer even the increase duplexer module.In such conventional architectures; The number of chips of WCDMA power amplifier and duplexer is too many, makes circuit structure very complicated, has taken a large amount of printed circuit board (PCB) (PCB) area; Be unfavorable for reducing cost, more be unfavorable for improving the reliability at terminal and realize miniaturization.
Summary of the invention
The method that the embodiment of the invention provides method that a kind of power amplifier module, multi-mode radio frequency transceiver, duplexer, multimode terminal, multimode terminal transmit and multimode terminal to receive signal takies the big problem of PCB area to solve existing multimode terminal.
The embodiment of the invention provides a kind of power amplifier module, is applied to the transmission channel of multimode terminal, and this power amplifier module comprises control module and the low frequency amplifier and the high-frequency amplifier that link to each other with said control module, wherein:
Said control module is used for sending the mode of operation index signal according to the control signal from baseband chip to said low frequency amplifier or said high-frequency amplifier;
Said low frequency amplifier is used to receive the mode of operation index signal that low frequencies signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said low frequencies signal is amplified back output;
Said high-frequency amplifier is used to receive the mode of operation index signal that high-frequency emission signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said high-frequency emission signal is amplified back output.
Preferably, said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits; Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
The embodiment of the invention also provides a kind of power amplifier module, is applied to the transmission channel of multimode terminal, and this power amplifier module comprises power amplifier and the match circuit that links to each other with said power amplifier, wherein:
Said match circuit is used to adjust the input impedance of said power amplifier, makes said power amplifier identical to the multiplication factor of different frequency range signal;
Said power amplifier links to each other with said match circuit, is used under the mode of operation of indicating from the control signal of baseband chip, and the signal that said match circuit is imported amplifies back output.
Preferably, said signal be that WCDMA (WCDMA) signal, code division multiple access (CDMA) transmit, TD SDMA (TD-SCDMA) signal, Long Term Evolution (LTE) signal or global system for mobile communications (GSM) signal.
The embodiment of the invention also provides a kind of multi-mode radio frequency transceiver, and this multi-mode radio frequency transceiver comprises:
Separation module is used for transmitting of receiving is divided into low frequencies signal or high-frequency emission signal;
Sending module is used for sending said low frequencies signal or sending said high-frequency emission signal through the high band transmitting terminal through the low-frequency range transmitting terminal.
Preferably, said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits; Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
The embodiment of the invention also provides a kind of duplexer, is applied to the transceiver channel of multimode terminal, comprises emission filter and receiving filter, wherein:
Said receiving filter is used for the signal that timesharing receives first mode signal and second mode signal frequency range corresponding with said receiving filter working frequency range, and carries out to the received signal exporting after the filtering; Wherein, said first mode signal comprises WCDMA (WCDMA) signal, code division multiple access (CDMA) signal, and said second mode signal comprises global system for mobile communications (GSM) signal.
The embodiment of the invention also provides a kind of multimode terminal, comprises the baseband chip, multi-mode radio frequency transceiver, power amplifier module, duplexer and the duplexer module that connect successively, wherein:
What said multi-mode radio frequency transceiver adopted is above-mentioned multi-mode radio frequency transceiver;
What said power amplifier module adopted is above-mentioned power amplifier module;
Said multimode terminal also comprises the switching circuit between said power amplifier module and said duplexer; Said switching circuit; Be used for according to from the control signal of said baseband chip, will be transported to respectively in the corresponding duplexer from the signal of the different transmit frequency bands of power amplifier module;
What said duplexer adopted is above-mentioned duplexer;
Said duplexer module is used to receive transmitting and sending to said duplexer and receive signal from said duplexer.
Preferably, when said power amplifier module comprised low frequency amplifier and high-frequency amplifier, said switching circuit comprised two single pole multiple throws, and said two single pole multiple throws link to each other with said high-frequency amplifier with said low frequency amplifier respectively; When said power amplifier module comprised a power amplifier, said switching circuit comprised a single pole multiple throw, and said single pole multiple throw links to each other with said power amplifier.
The method that the embodiment of the invention also provides a kind of multimode terminal to transmit, this method comprises:
Power amplifier module is according to from the control signal of baseband chip, under linear operation mode or saturation operation mode, transmitting of receiving amplified back output;
Switching circuit is according to switching in the corresponding duplexer of the said place frequency range that transmits from the switch-over control signal of baseband chip transmitting after with the amplification of said power amplifier module output.
Preferably, said transmitting comprises low frequencies signal and/or high-frequency emission signal.
Preferably, said power amplifier module is to before the amplification that transmits that receives, and said method also comprises:
The multi-mode radio frequency transceiver is divided into low frequencies signal and high-frequency emission signal with said transmitting, and sends said low frequencies signal and said high-frequency emission signal through low-frequency range transmitting terminal and high band transmitting terminal respectively.
Preferably, said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits; Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
The embodiment of the invention also provides a kind of multimode terminal to receive the method for signal, and said method comprises:
First mode signal that the duplexer module will receive or second mode signal send in the duplexer corresponding with said signal place frequency range;
Said duplexer carries out exporting after the filtering to the received signal; Wherein, said first mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal, and said second mode signal is global system for mobile communications (GSM) signal.
The above-mentioned multimode terminal that comprises the power amplifier module of low frequency amplifier and high-frequency amplifier and comprise above-mentioned power amplifier module; Signal through with various patterns only is divided into low frequency signal and high-frequency signal; And it is amplified by corresponding amplifier; Save the quantity of power amplifier effectively, reduced power amplifier module effectively and taken the area of PCB, and then reduced the area of the PCB that multimode terminal takies.
Description of drawings
Fig. 1 is existing GSM/WCDMA dual-mode terminal configuration diagram;
Fig. 2 is the configuration diagram of dual-mode terminal embodiment one of the present invention;
Fig. 3 is a power amplifier module working region sketch map;
Fig. 4 is the configuration diagram of dual-mode terminal embodiment two of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
The embodiment of the invention provides a kind of power amplifier module, is applied to the transmission channel of multimode terminal, and this power amplifier module comprises control module and the low frequency amplifier and the high-frequency amplifier that link to each other with said control module, wherein:
Said control module is used for sending the mode of operation index signal according to the control signal from baseband chip to said low frequency amplifier or said high-frequency amplifier;
Said low frequency amplifier is used to receive the mode of operation index signal that low frequencies signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said low frequencies signal is amplified back output;
Said high-frequency amplifier is used to receive the mode of operation index signal that high-frequency emission signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said high-frequency emission signal is amplified back output.
Wherein, the said low frequencies signal low-frequency signals that is that WCDMA (WCDMA) transmits, code division multiple access (CDMA) transmits, TD SDMA (TD-SCDMA) transmits, Long Term Evolution (LTE) transmits or global system for mobile communications (GSM) transmits etc.; The high-frequency signal that said high-frequency emission signal is that WCDMA transmits, CDMA transmits, TD-SCDMA transmits, LTE transmits or GSM transmits etc.
When above-mentioned low frequencies signal for low frequency WCDMA transmits, CDMA transmits, TD-SCDMA transmits, when LTE transmits; Low frequency amplifier is operated in linear operation mode; When above-mentioned low frequencies signal is GSM when transmitting, low frequency amplifier is operated in saturation operation mode; When above-mentioned high-frequency emission signal for high frequency WCDMA transmits, CDMA transmits, TD-SCDMA transmits, when LTE transmits; High-frequency amplifier is operated in linear operation mode; When above-mentioned high-frequency emission signal is GSM when transmitting, high-frequency amplifier is operated in saturation operation mode.
The above-mentioned power amplifier module that comprises low frequency amplifier and high-frequency amplifier; Signal through with various patterns only is divided into low frequency signal and high-frequency signal; And it is amplified by corresponding amplifier; Save the quantity of power amplifier effectively, reduced the area that power amplifier module takies PCB effectively.
In order to realize the function of above-mentioned power amplifier, the embodiment of the invention also provides a kind of multi-mode radio frequency transceiver, and this multi-mode radio frequency transceiver comprises:
Separation module is used for transmitting of receiving is divided into low frequencies signal or high-frequency emission signal;
Sending module is used for sending said low frequencies signal or sending said high-frequency emission signal through the high band transmitting terminal through the low-frequency range transmitting terminal.
Wherein, said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits; Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
In addition, in order to improve the integrated level of radio circuit better, the embodiment of the invention also provides a kind duplexer, is applied to the transceiver channel of multimode terminal, comprises emission filter and receiving filter, and the difference of this duplexer and existing duplexer is:
Said receiving filter is used for the signal that timesharing receives first mode signal and second mode signal frequency range corresponding with said receiving filter working frequency range, and carries out to the received signal exporting after the filtering; Wherein, said first mode signal comprises WCDMA (WCDMA) signal, code division multiple access (CDMA) signal, and said second mode signal comprises global system for mobile communications (GSM) signal.
Be the GSM filter need be set in the duplexer module, this duplexer can be accomplished the function of GSM filter.
As shown in Figure 2; Be the configuration diagram of dual-mode terminal embodiment one of the present invention, its main four part is formed: baseband chip 100, above-mentioned bimodulus RF transceiver 200, above-mentioned power amplifier module 300, switching circuit 400, above-mentioned duplexer 500 and duplexer module 600.
Wherein, Baseband chip 100 is used to provide the required power supply of each chip and the I Q signal is carried out analyzing and processing, and control GSM/WCDMA etc. multi-mode radio frequency transceiver 200, power amplifier 300, single pole multiple throw 400, duplexer module 600 etc. are operated in corresponding pattern etc.
Multi-mode radio frequency transceivers 200 such as GSM/WCDMA have the identical reception processing capacity of conventional radio frequency transceiver, and the radiofrequency signal that receives is carried out frequency-conversion processing to the IQ signal, are input to baseband chip then and receive signal processing.But its emission demodulation mode with the conventional radio frequency transceiver is different, and it will transmit and be divided into high-frequency signal and low frequency signal through after the signal processing, and will be as shown in table 1; It has HIGHBAND TX (high band emission) end and LOW BAND TX (low-frequency range emission) end; The high band transmitting terminal links to each other with high-frequency amplifier, and the low-frequency range transmitting terminal links to each other with low frequency amplifier.
Table 1WCDMA frequency range and GSM frequency range operating frequency correspondence table
Need to prove; The low frequencies signal of a certain pattern or high-frequency emission signal are relative notions in the embodiment of the invention; Be that the frequency range frequency that the low frequencies signal covers is lower than the frequency range frequency that the high-frequency emission signal covers,, will be included into low-frequency range (LOW BAND less than this frequency range of 1000MHz usually according to existing signal frequency range situation; LB); (HIGH BAND HB), can distinguish with concrete mode of operation according to the processing technology of power amplifier to this zone between the 1300MHz for 1000MHz and for be included into high band greater than this frequency range of 1300MHZ.Especially, for WCDMA/GSM bimodulus standard, to this interval of 960MHz, high band is that 1710MHz is to this interval of 2690MHz to low-frequency range at 824MHz.
Said switching circuit can be single pole multiple throw; The effect of single pole multiple throw 400 is under the control of baseband chip 100, the distinct transmit frequency band signals to be transported to respectively in the corresponding duplexer.Effect as for the corresponding single pole multiple throw of HIGH BAND TX in the WCDMA/GSM bimodulus standard is: when a certain moment mobile phone terminal is operated in the BAND I frequency range of WCDMA; This single pole multiple throw 400 will only be communicated with power amplifier and BAND I duplexer, and the path between power amplifier and other duplexer is broken off.
The effect of duplexer 500 is to isolate transmitting and receiving signal, and guaranteeing to receive and launch can both operate as normal.The narrow band filter that duplexer 500 is actually by two groups of different frequency ranges combines; The pass band width of these two groups of filters designs according to the bandwidth of handled upstream frequency (terminal emission) and downstream frequency (terminal reception) respectively, accomplishes the only effect of filtering out of band signal fully through required frequency signal.Like the duplexer for the correspondence of the BAND I signal in the WCDMA frequency range, the frequency range of its desirable transmitted passband is 1920-1980MHz, and the band limits of desirable received passband is 2110-2170MHz.Special Band II and the PCS1900 of GSM, the Band III of WCDMA and the DCS1800 of GSM, Band V and the GSM850 of GSM, the Band VIII of WCDMA and GSM900 this several groups of WCDMA signals and GSM signal of GSM of WCDMA for WCDMA; Because they have identical up-downgoing frequency; So can be shared between them identical path that transmits and receives; That is to say for GSM DCS1800 signal can directly use WCDMA III corresponding duplexer come to carry out filtering to transmitting and receiving signal, and need not place the GSM filter again.
The receiving circuit operation principle of multimode terminal frameworks such as the GSM/WCDMA of the foregoing description is: electromagnetic wave signal receives the back by antenna and gets into antenna switch module 600; Under the control of baseband chip 100; Duplexer module 600 is selected the corresponding working frequency range that receives, and GSM signal or WCDMA signal are sent in the corresponding duplexer 500.Multi-mode radio frequency transceivers 200 such as said GSM/WCDMA are converted to the low frequency i/q signal after treatment with the radiofrequency signal that receives, and send into baseband chip 100 and accomplish processing such as demodulation, decoding.Be in the processing of GSM receiving loop with traditional receiving circuit difference; It is outer spuious that present embodiment GSM receiving loop comes filtering to receive band through duplexer rather than SAW; Because duplexer can be isolated transmitting and receiving signal; Guarantee to receive and emission can both operate as normal, do not carry out time-division processing, for each GSM signal, can save a switch so antenna switch module also need not receive signal and transmit GSM; If four frequency GSM are supported at the terminal, the duplexer module can be saved four switches.
The radiating circuit operation principle of multimode terminal frameworks such as the GSM/WCDMA of the foregoing description is: processing such as the coding of baseband chip 100 completion primary signals, modulation; Obtain i/q signal; Send in the multi-mode radio frequency transceiver 200 such as GSM/WCDMA, be divided into high frequency band signal and low-band signal through after the signal processing; Be sent to the high band input pin and the low-frequency range input pin of power amplifier then respectively; If GSM signal; Then baseband chip 100 control power amplifiers 300 are operated in saturation mode; As shown in Figure 3, if the WCDMA signal, then baseband chip 100 control power amplifiers 300 are operated in linear model; These two kinds of different working patterns can reach maximum in the efficient that guarantees power amplifier 300 under the radio-frequency performance normal condition, and can reduce the air time that operating current increases the terminal this moment; The signal of height frequency range is fed to single pole multiple throw 400 after amplifying through power amplifier 300; Baseband chip 100 is according to different frequency range information Control single pole multiple throw 400; Make the radiofrequency signal of amplifying be sent in the corresponding duplexer 500, final GSM/WCDMA radiofrequency signal is all sent into the main antenna at terminal by antenna switch module 600.
The multimode terminal that comprises above-mentioned power amplifier module has reduced the area that takies PCB effectively.
The embodiment of the invention also provides a kind of power amplifier module, is applied to the transmission channel of multimode terminal, and this power amplifier module comprises match circuit and power amplifier, wherein:
Said match circuit is used to adjust the input impedance of said power amplifier;
Said power amplifier links to each other with said match circuit, is used under the mode of operation of indicating from the control signal of baseband chip, and the signal that said match circuit is imported amplifies back output.
Wherein, said signal be that WCDMA (WCDMA) signal, code division multiple access (CDMA) transmit, TD SDMA (TD-SCDMA) signal, Long Term Evolution (LTE) signal or global system for mobile communications (GSM) signal.
When above-mentioned signal was WCDMA signal, CDMA signal, TD-SCDMA signal or LTE signal, power amplifier was operated in linear operation mode, and when above-mentioned signal was the GSM signal, power amplifier was operated in saturation operation mode.
The power amplifier module that comprises above-mentioned match circuit and power amplifier; The input signal that can guarantee same magnitude in very big frequency range obtains essentially identical output amplitude after amplifying because power amplifier combines with match circuit; Therefore; Adopt a power amplifier module can the signal of various pattern different frequency ranges be amplified, effectively reduced the area that takies PCB.
The dual-mode terminal that comprises above-mentioned power amplifier module is as shown in Figure 5; The difference of this embodiment and multimode terminal shown in Figure 4 is: the input pin of power amplifier module 300 can not be divided into high band input pin and low-frequency range input pin; And have only an input pin, also have only an output pin certainly this moment; This moment, the signal of multi-mode radio frequency transceiver such as GSM/WCDMA 200 outputs also need not be distinguished high band and low-frequency range.
Above-mentioned power amplifier also can adopt the broadband Designing power amplifier; But this wideband power amplifer need adopt more advanced design and manufacturing process; And place complicated broadband matching circuit at the input and output pin of amplifier; It is little that then power amplifier can satisfy the frequency range relation of gain and amplitude and work of output; (and traditional power amplifier is because bigger with frequency change through obtaining essentially identical output amplitude after amplifying for the input signal that also just can guarantee same magnitude in very big frequency range; It can only satisfy the amplitude in certain frequency, exported and is consistent basically with gain, Here it is why at present power amplifier must be divided into the reason that high band and low-frequency range are imported).When adopting this type of wideband power amplifer; Just the frequency range of input signal need not have been distinguished; Can adopt the input pin that has only shown in Figure 5; Certainly the output pin that also has only a correspondence is only distinguished power amplifier according to GSM or WCDMA pattern and is operated in the zone of saturation or is operated in the range of linearity and get final product.
Adopt terminal reception Signal Processing process and Fig. 2 shown in Figure 5 just the same; Unique difference is signal emission processing procedure: wherein processing such as the coding of baseband chip 100 completion primary signals, modulation; Obtain i/q signal, send in the multi-mode radio frequency transceiver 200 such as GSM/WCDMA, through being fed to the signal input tube pin of power amplifier after the signal processing; If GSM signal; Then baseband chip 100 control wideband power amplifers are operated in saturation mode (as shown in Figure 4), if the WCDMA signal, then baseband chip 100 control power amplifiers are operated in linear model; These two kinds of different working patterns can reach maximum in the efficient that guarantees power amplifier 300 under the radio-frequency performance normal condition, and can reduce the air time that operating current increases the terminal this moment; WCDMA or GSM signal are fed to single pole multiple throw 400 after amplifying through wideband power amplifer 300; Baseband chip 100 is according to different frequency range information Control single pole multiple throw 400; Make the radiofrequency signal of amplifying be sent in the corresponding duplexer 500, final GSM/WCDMA radiofrequency signal is all sent into the main antenna at terminal by antenna switch module 600.
Above-mentioned multimode terminal embodiment is not limited to GSM and these two kinds of patterns of WCDMA, also can be other multimode standards such as GSM/CDMA, GSM/TD-SCDMA, GSM/LTE.
The multimode terminal that comprises above-mentioned power amplifier module has reduced the area that takies PCB effectively.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said procedure can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, only with reference to preferred embodiment the present invention is specified.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spirit and the scope of technical scheme of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (14)
1. power amplifier module is applied to the transmission channel of multimode terminal, it is characterized in that this power amplifier module comprises control module and the low frequency amplifier and the high-frequency amplifier that link to each other with said control module, wherein:
Said control module is used for sending the mode of operation index signal according to the control signal from baseband chip to said low frequency amplifier or said high-frequency amplifier;
Said low frequency amplifier is used to receive the mode of operation index signal that low frequencies signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said low frequencies signal is amplified back output;
Said high-frequency amplifier is used to receive the mode of operation index signal that high-frequency emission signal and said control module are sent, and under the mode of operation of said mode of operation index signal indication, said high-frequency emission signal is amplified back output.
2. power amplifier module according to claim 1 is characterized in that:
Said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits;
Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
3. power amplifier module is applied to the transmission channel of multimode terminal, it is characterized in that this power amplifier module comprises power amplifier and the match circuit that links to each other with said power amplifier, wherein:
Said match circuit is used to adjust the input impedance of said power amplifier, makes said power amplifier identical to the multiplication factor of different frequency range signal;
Said power amplifier links to each other with said match circuit, is used under the mode of operation of indicating from the control signal of baseband chip, and the signal that said match circuit is imported amplifies back output.
4. power amplifier module according to claim 3 is characterized in that:
Said signal is that WCDMA (WCDMA) signal, code division multiple access (CDMA) transmit, TD SDMA (TD-SCDMA) signal, Long Term Evolution (LTE) signal or global system for mobile communications (GSM) signal.
5. a multi-mode radio frequency transceiver is characterized in that, this multi-mode radio frequency transceiver comprises:
Separation module is used for transmitting of receiving is divided into low frequencies signal or high-frequency emission signal;
Sending module is used for sending said low frequencies signal or sending said high-frequency emission signal through the high band transmitting terminal through the low-frequency range transmitting terminal.
6. multi-mode radio frequency transceiver according to claim 5 is characterized in that:
Said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits;
Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
7. duplexer is applied to the transceiver channel of multimode terminal, comprises emission filter and receiving filter, it is characterized in that:
Said receiving filter is used for the signal that timesharing receives first mode signal and second mode signal frequency range corresponding with said receiving filter working frequency range, and carries out to the received signal exporting after the filtering; Wherein, said first mode signal comprises WCDMA (WCDMA) signal, code division multiple access (CDMA) signal, and said second mode signal comprises global system for mobile communications (GSM) signal.
8. a multimode terminal comprises the baseband chip, multi-mode radio frequency transceiver, power amplifier module, duplexer and the duplexer module that connect successively, it is characterized in that:
What said multi-mode radio frequency transceiver adopted is like claim 5 or 6 described multi-mode radio frequency transceivers;
What said power amplifier module adopted is like the described power amplifier module of the arbitrary claim of claim 1-4;
Said multimode terminal also comprises the switching circuit between said power amplifier module and said duplexer; Said switching circuit; Be used for according to from the control signal of said baseband chip, will be transported to respectively in the corresponding duplexer from the signal of the different transmit frequency bands of power amplifier module;
What said duplexer adopted is duplexer as claimed in claim 7;
Said duplexer module is used to receive transmitting and sending to said duplexer and receive signal from said duplexer.
9. multimode terminal according to claim 8 is characterized in that:
When said power amplifier module comprised low frequency amplifier and high-frequency amplifier, said switching circuit comprised two single pole multiple throws, and said two single pole multiple throws link to each other with said high-frequency amplifier with said low frequency amplifier respectively;
When said power amplifier module comprised a power amplifier, said switching circuit comprised a single pole multiple throw, and said single pole multiple throw links to each other with said power amplifier.
10. the method that multimode terminal transmits is characterized in that, this method comprises:
Power amplifier module is according to from the control signal of baseband chip, under linear operation mode or saturation operation mode, transmitting of receiving amplified back output;
Switching circuit is according to switching in the corresponding duplexer of the said place frequency range that transmits from the switch-over control signal of baseband chip transmitting after with the amplification of said power amplifier module output.
11. method according to claim 10 is characterized in that:
Said transmitting comprises low frequencies signal and/or high-frequency emission signal.
12. method according to claim 11 is characterized in that:
Said power amplifier module is to before the amplification that transmits that receives, and said method also comprises:
The multi-mode radio frequency transceiver is divided into low frequencies signal and high-frequency emission signal with said transmitting, and sends said low frequencies signal and said high-frequency emission signal through low-frequency range transmitting terminal and high band transmitting terminal respectively.
13., it is characterized in that according to the described method of the arbitrary claim of claim 10-12:
Said low frequencies signal is that broad band low frequency code division multiple access (WCDMA) transmits, low frequency code division multiple access (CDMA) transmits, low frequency TD SDMA (TD-SCDMA) transmits, low frequency Long Term Evolution (LTE) transmits or low frequency global system for mobile communications (GSM) transmits;
Said high-frequency emission signal is for high frequency WCDMA transmits, high frequency CDMA transmits, high frequency TD-SCDMA transmits, high frequency LTE transmits or high frequency GSM transmits.
14. a multimode terminal receives the method for signal, it is characterized in that said method comprises:
First mode signal that the duplexer module will receive or second mode signal send in the duplexer corresponding with said signal place frequency range;
Said duplexer carries out exporting after the filtering to the received signal; Wherein, said first mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal, and said second mode signal is global system for mobile communications (GSM) signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103459769A CN102510297A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
| PCT/CN2012/076720 WO2013063938A1 (en) | 2011-11-04 | 2012-06-11 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103459769A CN102510297A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102510297A true CN102510297A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103459769A Pending CN102510297A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102510297A (en) |
| WO (1) | WO2013063938A1 (en) |
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