CN101043228A - Multi-mode mobile communication terminal and RF receiving and transmitting circuit, method - Google Patents
Multi-mode mobile communication terminal and RF receiving and transmitting circuit, method Download PDFInfo
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- CN101043228A CN101043228A CNA2007100959263A CN200710095926A CN101043228A CN 101043228 A CN101043228 A CN 101043228A CN A2007100959263 A CNA2007100959263 A CN A2007100959263A CN 200710095926 A CN200710095926 A CN 200710095926A CN 101043228 A CN101043228 A CN 101043228A
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- duplexer
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Abstract
The invention discloses a multi frequency mobile communication and radio frequency receiving and sending circuit, method, by setting corresponding bandwidth filter at the receiving and sending end of every communication module in multi mode communication terminal, interference of the signal emitted by one sending end of communication module to the receiving signal of the other communication module can be decreased greatly, the communication quality of multi frequency mobile communication terminal can be increased.
Description
Technical field
The present invention relates to moving communicating field, especially relate to a kind of multi-mode mobile communication terminal and radio frequency reception thereof and radiating circuit, method.
Background technology
At moving communicating field, in numerous standards and network coexisted today, can be applied at least two communication systems, be applicable to that the multifrequency communication terminal of at least two kinds of communication patterns can provide smooth excessiveness for the differentiation of each communication system of coexistence.The user who uses the multifrequency communication terminal not only can be easily adopt different system all over the world between roam, and according to the speech quality and the charging way of different system switch at any time better, more cheap network.We can say that the multifrequency communication terminal combines all advantages of multiple network technology, therefore have very big market prospects.
Occurred some multi-mode mobile communication terminals now on the market, for example, Fig. 1 shows a kind of existing multifrequency communication terminal.It includes two basic communication modules, and wherein, one is the gsm communication module, and another is the DCS communication module.Two modules standbies simultaneously and communicating.This mobile communication terminal is selectable to work in a kind of of single GSM pattern (being first communication module work), single DCS pattern (being second communication module work) or GSM/DCS double mode (being that first communication module and second communication module are worked simultaneously).Wherein, this communication terminal of the double mode expression of GSM/DCS under GSM and DCS two-mode simultaneously at net.Herein " at net " comprises standby and communications status, and communications status be meant the transmitting-receiving note, connect make a phone call, transfer of data and enjoy the active state that other value-added services etc. take network.When the standby simultaneously of two kinds of patterns, the working frequency range of the two kinds of mode signals distance of being separated by no matter, because single mode communication terminal and subsidiary communications module card are positioned at same housing, and the dual-mode antenna of two-mode works simultaneously, therefore all is difficult to avoid two kinds of radio frequency cross between the mode signal to disturb.To be example among this Fig. 1, the radio frequency cross of above-mentioned two kinds of mode signals is disturbed the following four kinds of situations that mainly comprise:
When (1) GSM launches (when first communication module is handled emission state), GSM transmits to the interference of DCS received signal;
When (2) DCS launches (when second communication module is handled emission state), DCS transmits to the interference of GSM received signal;
(3) GSM emission, reception and idle condition, the interference that spurious emissions signal (spurious emissions) receives DCS;
(4) DCS emission, reception and idle condition, the interference that the spurious emissions signal receives GSM.
In above-mentioned four kinds of situations, for (3), (4), because the spurious emissions signal is with respect to useful signal, transmitting power is very little, and the interference that causes is also very little, so do not do consideration at this.For situation (1),, can cause the DCS weak signal to be fallen into oblivion by the strong signal of GSM when the GSM transmit signal strength that is coupled into the DCS receiver during far above DCS base station transmit signals intensity.The interference that GSM transmits to the DCS received signal can cause that the DCS receiver increases the demodulation bit error rate of the useful weak signal of DCS, and promptly the DCS receiving sensitivity descends.For (2),, can cause the GSM weak signal to be fallen into oblivion by the strong signal of DCS when the DCS transmit signal strength that is coupled into the GSM receiver during far above GSM base station transmit signals intensity.The interference that DCS transmits to the GSM received signal can cause that the GSM receiver increases the demodulation bit error rate of the useful weak signal of GSM, and promptly the GSM receiving sensitivity descends.In a word, transmitting of one of them communication module may produce interference to the received signal of another communication module.
As shown in Figure 2, be existing a kind of multifrequency portable terminal.It comprises two basic communication modules equally, and just each communication module all can be operated under two kinds of frequency modes.Wherein, first communication module is operated under GSM850 or the DCS pattern, and second communication module is done under GSM900 or PCS pattern.With similar among Fig. 1, when first communication module and second communication module are worked simultaneously (as the while standby), when satisfying certain condition, transmit (GSM850/DCS) of first communication module can produce the received signal in the second communication module and disturb; Transmit (GSM900/PCS) of second communication module also can produce the received signal of first communication module and disturb.
Therefore, at the multifrequency communication terminal, a kind of pattern interference to another kind of pattern received signal problem that needs solve that becomes to attach most importance to that transmits.
Summary of the invention
In view of this, embodiment of the invention technical problem to be solved is, provide a kind of multi-mode mobile communication terminal and radio frequency thereof to receive and radiating circuit, a kind of pattern that can effectively reduce in the mobile communication terminal transmits to the interference of another kind of pattern received signal.
For solving the problems of the technologies described above, a kind of multi-mode mobile communication terminal of the embodiment of the invention comprises two communication modules that correspond respectively at least two kinds of communication patterns, and wherein at least one communication module comprises: antenna;
The duplexer that is connected with described antenna;
Be used to receive radiofrequency signal radio frequency receiver from antenna;
Be used to send the radiofrequency launcher of radiofrequency signal;
Be used to amplify radio frequency amplifier from the radiofrequency signal to be sent of radio-frequency (RF) transceiver;
The baseband processing module that is connected respectively with described radio frequency receiver and radiofrequency launcher;
Be connected the receiving terminal Interference Control module between described duplexer and the described radio frequency receiver, the radiofrequency signal that received of being used for decaying is corresponding to the outer signal of the reception frequency range of its communication pattern; And
Be connected the transmitting terminal Interference Control module between described duplexer and the described radio frequency amplifier, the radiofrequency signal to be sent that is used for decaying is corresponding to the outer signal of the transmission frequency range of its communication pattern.
Preferably, described receiving terminal Interference Control module comprises:
Be connected the transmitting terminal low band filter between the low frequency output of duplexer and radio frequency amplifier;
Be connected the transmitting terminal high band filter between the high frequency output of duplexer and radio frequency amplifier.
Preferably, described transmitting terminal low band filter comprises the first transmitting terminal low band filter and the second transmitting terminal low band filter, one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter is connected with duplexer by a low-frequency range diverter switch, the other end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter links to each other with the low frequency output of described radio frequency amplifier by another low-frequency range diverter switch, and described two low-frequency range diverter switches are controlled by described baseband processing module.
Preferably, described transmitting terminal high band filter comprises the first transmitting terminal high band filter and the second transmitting terminal high band filter, one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter is connected with duplexer by a high band diverter switch, the other end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter links to each other with the high frequency output of described radio frequency amplifier by another high band diverter switch, and described two high band diverter switches are controlled by described baseband processing module.
Preferably, receiving terminal Interference Control module comprises:
At least two receiving terminal low band filter that are serially connected between duplexer and the radio frequency receiver;
At least two receiving terminal high band filters that are serially connected between duplexer and the radio frequency receiver.
Preferably, the receiving terminal low band filter comprises: be serially connected at least two first receiving terminal low band filter between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal low band filter between duplexer and the radio frequency receiver; Or
Receiving terminal high band filter comprises: be serially connected at least two first receiving terminal high band filters between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal high band filters between duplexer and the radio frequency receiver.
Preferably, the described first transmitting terminal low band filter and the second transmitting terminal low band filter correspond respectively to the band pass filter of the transmit frequency band of GSM900 or GSM850; The described first transmitting terminal high band filter and the second transmitting terminal high band filter are respectively the band pass filter corresponding to the transmit frequency band of DCS or PCS;
The described first receiving terminal low band filter and the second receiving terminal low band filter are respectively the band pass filter corresponding to the reception frequency range of GSM900 or GSM850; The described first receiving terminal high band filter and the second receiving terminal high band filter correspond respectively to the band pass filter of the reception frequency range of DCS or PCS.
A kind of multi-mode mobile communication terminal radio-frequency (RF) receiving circuit of the embodiment of the invention comprises:
Antenna;
The duplexer that is connected with described antenna;
Be used to receive radiofrequency signal radio frequency receiver from antenna;
The baseband processing module that is connected with described radio frequency receiver;
Be connected the receiving terminal Interference Control module between described duplexer and the described radio frequency receiver, the radiofrequency signal that is received that is used for decaying receives the outer signal of frequency range corresponding to its communication pattern.
Preferably, described receiving terminal Interference Control module comprises:
At least two receiving terminal low band filter that are serially connected between duplexer and the radio frequency receiver;
At least two receiving terminal high band filters that are serially connected between duplexer and the radio frequency receiver.
Preferably, the receiving terminal low band filter comprises: be serially connected at least two first receiving terminal low band filter between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal low band filter between duplexer and the radio frequency receiver; Or
Receiving terminal high band filter comprises: be serially connected at least two first receiving terminal high band filters between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal high band filters between duplexer and the radio frequency receiver.
A kind of multi-mode mobile communication terminal radio-frequency transmissions circuit of the embodiment of the invention comprises:
Antenna;
The duplexer that is connected with described antenna;
Be used to send the radiofrequency launcher of radiofrequency signal;
Be used to amplify radio frequency amplifier from the radiofrequency signal to be sent of radio-frequency (RF) transceiver;
The baseband processing module that is connected with described radiofrequency launcher;
Be connected the transmitting terminal Interference Control module between described duplexer and the described radio frequency amplifier, the radiofrequency signal to be sent that is used for decaying sends the outer signal of frequency range corresponding to its communication pattern.
Preferably, described receiving terminal Interference Control module comprises:
Be connected the transmitting terminal low band filter between the low frequency output of duplexer and radio frequency amplifier;
Be connected the transmitting terminal high band filter between the high frequency output of duplexer and radio frequency amplifier.
Preferably, described transmitting terminal low band filter comprises the first transmitting terminal low band filter and the second transmitting terminal low band filter, one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter is connected with duplexer by a low-frequency range diverter switch, the other end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter links to each other with the low frequency output of described radio frequency amplifier by another low-frequency range diverter switch, and described two low-frequency range diverter switches are controlled by described baseband processing module.
Preferably, described transmitting terminal high band filter comprises the first transmitting terminal high band filter and the second transmitting terminal high band filter, one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter is connected with duplexer by a high band diverter switch, the other end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter links to each other with the high frequency output of described radio frequency amplifier by another high band diverter switch, and described two high band diverter switches are controlled by described baseband processing module.
Preferably, the described first transmitting terminal low band filter and the second transmitting terminal low band filter are respectively the band pass filter corresponding to the transmit frequency band of GSM900 or GSM850; The described first transmitting terminal high band filter and the second transmitting terminal high band filter are respectively the band pass filter corresponding to the transmit frequency band of DCS or PCS.
A kind of multi-mode mobile communication terminal radio frequency receiving method of the embodiment of the invention comprises:
Reception is from the radiofrequency signal corresponding to a communication pattern of antenna;
Radiofrequency signal to described reception is carried out attenuation processing, and decaying, it receives the outer signal of frequency range;
Radiofrequency signal after attenuation processing is passed to baseband processing module.
Preferably, the described step that the radiofrequency signal that receives is carried out attenuation processing is specially:
Adopt the band pass filter of the band downlink of corresponding described communication pattern, the radiofrequency signal of described reception is carried out Filtering Processing.
A kind of multi-mode mobile communication terminal RF transmission method of the embodiment of the invention comprises:
Radiofrequency signal to be sent from correspondence one communication pattern of baseband processing module is amplified;
For described radiofrequency signal to be sent is selected transmission path;
On transmission path, described radiofrequency signal to be sent is carried out attenuation processing, the outer signal of its transmit frequency band of decaying;
Radiofrequency signal after attenuation processing is launched through antenna.
Preferably, described step of carrying out attenuation processing to sent radiofrequency signal is specially:
Adopt the band pass filter of the uplink band of corresponding described communication pattern, described radiofrequency signal to be sent is carried out Filtering Processing.
The multi-mode mobile communication terminal of the enforcement embodiment of the invention and radio frequency reception thereof and radiating circuit, method, with transmitting terminal a corresponding band pass filter is set by receiving terminal in each communication module of multi-mode mobile communication terminal, can reduce transmitting of one of them communication module significantly, improve the communication quality of multi-mode mobile communication terminal the interference of the received signal of another communication module.
Description of drawings
Fig. 1 is the structural representation of existing multi-mode mobile communication terminal;
Fig. 2 is the structural representation of existing multi-mode mobile communication terminal;
Fig. 3 is the structural representation of first embodiment of the invention;
Fig. 4 is the structural representation of the second embodiment of the present invention;
Fig. 5 is the structural representation of the third embodiment of the present invention;
Fig. 6 is the structural representation of the fourth embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described.
As shown in Figure 3, be the structural representation of the first embodiment of the present invention.Described mobile communication terminal is the multifrequency portable terminal, and it comprises at least two communication modules (shown in the figure two), and each communication module all can be operated on two above communication patterns (being different frequency ranges).In the embodiments of figure 3, first communication module is operated under two kinds of patterns, and first pattern is low-frequency range pattern (as GSM850 or GMS900 etc.), and second pattern is high band pattern (as PCS or DCS); Be illustrated with GMS900 and DCS respectively below.Second communication module can be operated under the different patterns equally, does not draw among the figure.First communication module among the figure comprises:
Be used to receive and launch the antenna of different mode radiofrequency signal, this antenna can be a plurality of, perhaps adopts integrated dual-mode/multi-mode antenna;
With the duplexer that described antenna is connected, be used to select respective antenna to launch or receive, also can be called as duplexer;
Radio frequency receiver is used to receive the radiofrequency signal from antenna;
Radiofrequency launcher is used to send radiofrequency signal;
Radio frequency amplifier is used to amplify the radiofrequency signal to be sent from radio-frequency (RF) transceiver;
The baseband processing module that is connected respectively with described radio frequency receiver and radiofrequency launcher;
The radiofrequency signal that radio frequency receiver received can be passed to baseband processing module; And the radiofrequency signal to be sent on the described radiofrequency launcher is from this baseband processing module.
In other some embodiment, described radiofrequency launcher and radio frequency receiver can be integrated in the module (as radio-frequency (RF) transceiver).
Above-mentioned parts and similar of the prior art, be not elaborated at this, improvements of the present invention are, also comprise the receiving terminal Interference Control module that is connected between described duplexer and the described radio-frequency (RF) transceiver at each communication terminal, be used for reducing significantly from antenna institute received RF signal corresponding to the signal outside the reception frequency range of its mode of operation; And be connected transmitting terminal Interference Control module between described duplexer and the described radio frequency amplifier, be used for reducing significantly radiofrequency signal to be sent corresponding to the outer signal of the transmit frequency band of its mode of operation.
When specific implementation, this transmitting terminal Interference Control module includes the transmitting terminal low band filter between the low frequency output that is connected duplexer and radio frequency amplifier, and is connected transmitting terminal high band filter between the high frequency output of duplexer and radio frequency amplifier.Described transmitting terminal low band filter and transmitting terminal high band filter are band pass filter, the signal beyond the transmit frequency band that is used for reducing significantly to transmit.For example, among the figure, the low-frequency range pattern is GSM900, because the uplink band of this pattern is 890～915MHZ, so the band pass filter that this transmitting terminal low band filter is 890～915MHZ can reduce to reach noise greater than 915MHZ less than 890MHZ significantly.The high band pattern is DCS, because the uplink band of this pattern is 1710～1785MHZ, so this transmitting terminal high band filter is the band pass filter of 1710～1785MHZ.
Receiving terminal Interference Control module comprises: at least two receiving terminal low band filter that are serially connected between duplexer and the radio-frequency (RF) transceiver; And at least two receiving terminal high band filters that are serially connected between duplexer and the radio-frequency (RF) transceiver.Equally, described receiving terminal low band filter and receiving terminal high band filter are band pass filter, the signal beyond its pattern working frequency range of signal that is used for reducing significantly receiving from antenna.For example, among the figure, the low-frequency range pattern is GSM900, because the band downlink of this pattern is 935～960MHZ, so the band pass filter that this receiving terminal low band filter is 935～960MHZ can reduce to reach noise greater than 960MHZ less than 935MHZ significantly.The high band pattern is DCS, because the band downlink of this pattern is 1805～1880MHZ, so this receiving terminal high band filter is the band pass filter of 1805～1880MHZ.Need to prove described a plurality of filters that are located at receiving terminal can be the same or different (in the subsequent embodiment therewith with).
In like manner, in second communication module, (not drawing among the figure) can be set similarly also.
Embodiments of the invention, because receiving terminal and transmitting terminal at different mode are equipped with a band pass filter corresponding to this pattern frequency range, can carry out filtering (or significantly decaying) to the received signal of corresponding band and the outer clutter of band of transmission signal respectively, the out of band signal of transmission signal that can significantly reduce one of them communication module has guaranteed communication quality to the interference of the corresponding received signal of another one communication module.For example, in the embodiments of figure 3, suppose that second module is operated on the PCS pattern, when the first module GSM850 launches, strictness is limited in the frequency range of 824～849MHZ because GSM 850 transmits, even transmitting, this is coupled on the reception antenna of second communication module (PCS), claim the transmitting of first communication module on this reception antenna that is coupled to second communication module to be interference signal herein, owing to behind the duplexer of second communication module, be provided with at least two corresponding to PCS band downlink (1930～1990MHZ) band pass filter, because interference signal is the signal in 824～849MHZ frequency range, reduce so can be crossed significantly by the band pass filter of second communication module receiving terminal.So can overcome interference phenomenon of the prior art; In like manner, transmitting in the second communication module (1850～1910MHZ, PCS uplink band) will effectively reduce received signal system in the first communication module (935～960MHZ, GSM850 band downlink) will be produced interference.
As shown in Figure 4, be the structural representation of the second embodiment of the present invention.Described mobile communication terminal comprises two communication modules, and each communication module is operated under three kinds of patterns, comprises two low-frequency range patterns, i.e. GSM850 and GMS900 describe with PCS below the high band pattern (as PCS or DCS).Do not describe in detail at this with same parts among first embodiment shown in Fig. 3, below main explanation difference part:
Wherein, because two low-frequency ranges are arranged, so receiving terminal Interference Control module comprises at least: be serially connected at least two first receiving terminal low band filter (corresponding to GSM850) between duplexer and the radio frequency receiver, be serially connected at least two the second receiving terminal low band filter (corresponding to GSM900) between duplexer and the radio frequency receiver and be serially connected in duplexer and radio frequency receiver between at least two receiving terminal high band filters (corresponding to PCS or DCS).The described first receiving terminal low band filter, the second receiving terminal low band filter and receiving terminal high band filter are band pass filter, working frequency range correspond respectively to GSM850 band downlink (869～894MHZ), the band downlink of GSM900 (935～960MHZ) and the band downlink (1930～1990MHZ) of PCS.
Because two low-frequency ranges are arranged, so the transmitting terminal low band filter of transmitting terminal Interference Control module comprises the first transmitting terminal low band filter (corresponding to GSM850) and the second transmitting terminal low band filter (corresponding to GSM900), one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter is connected with duplexer by a low-frequency range diverter switch, the other end of one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter links to each other with the low frequency output of described radio frequency amplifier by another low-frequency range diverter switch, described two low-frequency range diverter switches are controlled by described baseband processing module, to carry out the selection of corresponding low-frequency range.(in other some embodiment, when if duplexer is the duplexer of the above input of two-way, low-frequency range diverter switch between the described duplexer and the first transmitting terminal low band filter and the second transmitting terminal low band filter can be omitted, and an end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter directly is connected with duplexer.Below other embodiment can carry out same treatment).The described first transmitting terminal low band filter, the second transmitting terminal low band filter and transmitting terminal high band filter are band pass filter, working frequency range correspond respectively to GSM850 uplink band (824～849MHZ), the uplink band of GSM900 (890～915MHZ) and the uplink band (1850～1910MHZ) of PCS.First embodiment among the operation principle of this embodiment and Fig. 2 is basic identical, does not describe in detail at this.
As shown in Figure 5, be the structural representation of the third embodiment of the present invention.Described mobile communication terminal comprises two communication modules, and each communication module is operated under three kinds of patterns, comprises a low-frequency range pattern (GSM850 or GMS900) and two high band patterns (being PCS and DCS), describes with GSM850 below.Do not describe in detail at this with same parts among first embodiment shown in Fig. 3, below main explanation difference part:
Wherein, because two high bands are arranged, so receiving terminal Interference Control module comprises at least: be serially connected at least two first receiving terminal high band filters (corresponding to DCS) between duplexer and the radio frequency receiver, be serially connected at least two the second receiving terminal high band filters (corresponding to PCS) between duplexer and the radio frequency receiver and be serially connected in duplexer and radio frequency receiver between at least two receiving terminal low band filter (corresponding to GSM850).The described first receiving terminal low band filter, the second receiving terminal low band filter and receiving terminal high band filter are band pass filter, working frequency range correspond respectively to DCS band downlink (1805～1880MHZ), the band downlink of PCS (1930～1990MHZ) and the band downlink (869～894MHZ) of GSM850.
Because two high bands are arranged, so the transmitting terminal high band filter of transmitting terminal Interference Control module comprises the first transmitting terminal high band filter (corresponding to DCS) and the second transmitting terminal high band filter (corresponding to PCS), one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter is connected with duplexer by a high band diverter switch, the other end of one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter links to each other with the high frequency output of described radio frequency amplifier by another high band diverter switch, described two high band diverter switches are controlled by described baseband processing module, to carry out the selection of corresponding high band.The described first transmitting terminal high band filter, the second transmitting terminal high band filter and transmitting terminal low band filter are band pass filter, working frequency range correspond respectively to PCS uplink band (1850～1910MHZ), the uplink band of DCS (1710～1785MHZ) and the uplink band (824～849MHZ) of GSM850.First embodiment among the operation principle of this embodiment and Fig. 2 is basic identical, does not describe in detail at this.
As shown in Figure 6, be the structural representation of the fourth embodiment of the present invention.Described mobile communication terminal comprises two communication modules, and each communication module is operated under four kinds of patterns, comprises two low-frequency range patterns (being GSM850 and GMS900) and two high band patterns (being PCS and DCS).Its structure and principle are easy to derive out from aforementioned first embodiment, second embodiment and the 3rd embodiment, do not describe in detail at this.
To sum up, in the foregoing description, multi-mode mobile communication terminal of the present invention can be summarized as follows in the processing procedure that radio frequency receives:
Reception is from the radiofrequency signal corresponding to a communication pattern of antenna;
Radiofrequency signal to described reception is carried out attenuation processing, be specially the band pass filter (as two or more) of the band downlink that adopts corresponding described communication pattern, radiofrequency signal to described reception is carried out Filtering Processing, and it receives the outer signal of frequency range to decay;
Radiofrequency signal after attenuation processing is passed to baseband processing module.
Multi-mode mobile communication terminal of the present invention can be summarized as follows in the processing procedure of radio-frequency transmissions:
Radiofrequency signal to be sent from correspondence one communication pattern of baseband processing module is amplified;
For described radiofrequency signal to be sent is selected transmission path;
On transmission path, described radiofrequency signal to be sent is carried out attenuation processing, be specially the band pass filter of the uplink band that adopts corresponding described communication pattern, described radiofrequency signal to be sent is carried out Filtering Processing, with the outer signal of its transmit frequency band of decaying;
Radiofrequency signal after attenuation processing is launched through antenna.
The foregoing description only shows communication module and is operated in GSM850, GSM900, PCS and four kinds of communication modules of DCS.Equally, it can also be operated in such as in PHS, CDMA2000, WCDMA, TD-SCDMA, the WiFi isotype, only needs the parameter of wherein filter is done some corresponding adjustment.This should be that those skilled in the art are easy to expect and realize, does not describe in detail at this.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1, a kind of multi-mode mobile communication terminal comprises two communication modules that correspond respectively at least two kinds of communication patterns, and wherein at least one communication module comprises:
Antenna;
The duplexer that is connected with described antenna;
Be used to receive radiofrequency signal radio frequency receiver from antenna;
Be used to send the radiofrequency launcher of radiofrequency signal;
Be used to amplify radio frequency amplifier from the radiofrequency signal to be sent of radio-frequency (RF) transceiver;
The baseband processing module that is connected respectively with described radio frequency receiver and radiofrequency launcher;
It is characterized in that, further comprise:
Be connected the receiving terminal Interference Control module between described duplexer and the described radio frequency receiver, the radiofrequency signal that received of being used for decaying is corresponding to the outer signal of the reception frequency range of its communication pattern; And
Be connected the transmitting terminal Interference Control module between described duplexer and the described radio frequency amplifier, the radiofrequency signal to be sent that is used for decaying is corresponding to the outer signal of the transmission frequency range of its communication pattern.
2, multi-mode mobile communication terminal as claimed in claim 1 is characterized in that, described receiving terminal Interference Control module comprises:
Be connected the transmitting terminal low band filter between the low frequency output of duplexer and radio frequency amplifier;
Be connected the transmitting terminal high band filter between the high frequency output of duplexer and radio frequency amplifier.
3, multi-mode mobile communication terminal as claimed in claim 2, it is characterized in that, described transmitting terminal low band filter comprises the first transmitting terminal low band filter and the second transmitting terminal low band filter, one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter is connected with duplexer by a low-frequency range diverter switch, the other end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter links to each other with the low frequency output of described radio frequency amplifier by another low-frequency range diverter switch, and described two low-frequency range diverter switches are controlled by described baseband processing module.
4, multi-mode mobile communication terminal as claimed in claim 2, it is characterized in that, described transmitting terminal high band filter comprises the first transmitting terminal high band filter and the second transmitting terminal high band filter, one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter is connected with duplexer by a high band diverter switch, the other end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter links to each other with the high frequency output of described radio frequency amplifier by another high band diverter switch, and described two high band diverter switches are controlled by described baseband processing module.
As each described multi-mode mobile communication terminal of claim 1-4, it is characterized in that 5, receiving terminal Interference Control module comprises:
At least two receiving terminal low band filter that are serially connected between duplexer and the radio frequency receiver;
At least two receiving terminal high band filters that are serially connected between duplexer and the radio frequency receiver.
6, multi-mode mobile communication terminal as claimed in claim 5, it is characterized in that, the receiving terminal low band filter comprises: be serially connected at least two first receiving terminal low band filter between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal low band filter between duplexer and the radio frequency receiver; Or
Receiving terminal high band filter comprises: be serially connected at least two first receiving terminal high band filters between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal high band filters between duplexer and the radio frequency receiver.
7, multi-mode mobile communication terminal as claimed in claim 6 is characterized in that, the described first transmitting terminal low band filter and the second transmitting terminal low band filter correspond respectively to the band pass filter of the transmit frequency band of corresponding low-frequency range communication pattern; The described first transmitting terminal high band filter and the second transmitting terminal high band filter are respectively the band pass filter corresponding to the transmit frequency band of corresponding high band communication pattern;
The described first receiving terminal low band filter and the second receiving terminal low band filter are respectively the band pass filter corresponding to the reception frequency range of corresponding low-frequency range communication pattern; The described first receiving terminal high band filter and the second receiving terminal high band filter correspond respectively to the band pass filter of the reception frequency range of corresponding high band communication pattern.
8, a kind of multi-mode mobile communication terminal radio-frequency (RF) receiving circuit comprises:
Antenna;
The duplexer that is connected with described antenna;
Be used to receive radiofrequency signal radio frequency receiver from antenna;
The baseband processing module that is connected with described radio frequency receiver;
It is characterized in that, further comprise:
Be connected the receiving terminal Interference Control module between described duplexer and the described radio frequency receiver, the radiofrequency signal that is received that is used for decaying receives the outer signal of frequency range corresponding to its communication pattern.
9, multi-mode mobile communication terminal radio-frequency (RF) receiving circuit as claimed in claim 8 is characterized in that, described receiving terminal Interference Control module comprises:
At least two receiving terminal low band filter that are serially connected between duplexer and the radio frequency receiver;
At least two receiving terminal high band filters that are serially connected between duplexer and the radio frequency receiver.
10, multi-mode mobile communication terminal radio-frequency (RF) receiving circuit as claimed in claim 9, it is characterized in that, the receiving terminal low band filter comprises: be serially connected at least two first receiving terminal low band filter between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal low band filter between duplexer and the radio frequency receiver; Or
Receiving terminal high band filter comprises: be serially connected at least two first receiving terminal high band filters between duplexer and the radio frequency receiver, and be serially connected at least two second receiving terminal high band filters between duplexer and the radio frequency receiver.
11, a kind of multi-mode mobile communication terminal radio-frequency transmissions circuit comprises:
Antenna;
The duplexer that is connected with described antenna;
Be used to send the radiofrequency launcher of radiofrequency signal;
Be used to amplify radio frequency amplifier from the radiofrequency signal to be sent of radio-frequency (RF) transceiver;
The baseband processing module that is connected with described radiofrequency launcher;
It is characterized in that, further comprise:
Be connected the transmitting terminal Interference Control module between described duplexer and the described radio frequency amplifier, the radiofrequency signal to be sent that is used for decaying sends the outer signal of frequency range corresponding to its communication pattern.
12, multi-mode mobile communication terminal radio-frequency transmissions circuit as claimed in claim 11 is characterized in that, described receiving terminal Interference Control module comprises:
Be connected the transmitting terminal low band filter between the low frequency output of duplexer and radio frequency amplifier;
Be connected the transmitting terminal high band filter between the high frequency output of duplexer and radio frequency amplifier.
13, multi-mode mobile communication terminal radio-frequency transmissions circuit as claimed in claim 12, it is characterized in that, described transmitting terminal low band filter comprises the first transmitting terminal low band filter and the second transmitting terminal low band filter, one end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter is connected with duplexer by a low-frequency range diverter switch, the other end of the described first transmitting terminal low band filter and the second transmitting terminal low band filter links to each other with the low frequency output of described radio frequency amplifier by another low-frequency range diverter switch, and described two low-frequency range diverter switches are controlled by described baseband processing module.
14, as claim 12 or 13 described multi-mode mobile communication terminal radio-frequency transmissions circuit, it is characterized in that, described transmitting terminal high band filter comprises the first transmitting terminal high band filter and the second transmitting terminal high band filter, one end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter is connected with duplexer by a high band diverter switch, the other end of the described first transmitting terminal high band filter and the second transmitting terminal high band filter links to each other with the high frequency output of described radio frequency amplifier by another high band diverter switch, and described two high band diverter switches are controlled by described baseband processing module.
15, multi-mode mobile communication terminal radio-frequency transmissions circuit as claimed in claim 14, it is characterized in that the described first transmitting terminal low band filter and the second transmitting terminal low band filter are respectively the band pass filter corresponding to corresponding low-frequency range communication pattern transmit frequency band; The described first transmitting terminal high band filter and the second transmitting terminal high band filter are respectively the band pass filter corresponding to the transmit frequency band of corresponding high band communication pattern.
16, a kind of multi-mode mobile communication terminal radio frequency receiving method is characterized in that, comprising:
Reception is from the radiofrequency signal corresponding to a communication pattern of antenna;
Radiofrequency signal to described reception is carried out attenuation processing, and decaying, it receives the outer signal of frequency range;
Radiofrequency signal after attenuation processing is passed to baseband processing module.
17, multi-mode mobile communication terminal radio frequency receiving method as claimed in claim 16 is characterized in that, the step that described radiofrequency signal to reception is carried out attenuation processing is specially:
Adopt the band pass filter of the band downlink of corresponding described communication pattern, the radiofrequency signal of described reception is carried out Filtering Processing.
18, a kind of multi-mode mobile communication terminal RF transmission method is characterized in that, comprising:
Radiofrequency signal to be sent from correspondence one communication pattern of baseband processing module is amplified;
For described radiofrequency signal to be sent is selected transmission path;
On transmission path, described radiofrequency signal to be sent is carried out attenuation processing, the outer signal of its transmit frequency band of decaying;
Radiofrequency signal after attenuation processing is launched through antenna.
19, multi-mode mobile communication terminal RF transmission method as claimed in claim 18 is characterized in that, described step of carrying out attenuation processing to sent radiofrequency signal is specially:
Adopt the band pass filter of the uplink band of corresponding described communication pattern, described radiofrequency signal to be sent is carried out Filtering Processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100959263A CN101043228A (en) | 2007-02-01 | 2007-03-29 | Multi-mode mobile communication terminal and RF receiving and transmitting circuit, method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720118509.1 | 2007-02-01 | ||
| CN200720118509 | 2007-02-01 | ||
| CNA2007100959263A CN101043228A (en) | 2007-02-01 | 2007-03-29 | Multi-mode mobile communication terminal and RF receiving and transmitting circuit, method |
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| Publication Number | Publication Date |
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| CN101043228A true CN101043228A (en) | 2007-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100959263A Pending CN101043228A (en) | 2007-02-01 | 2007-03-29 | Multi-mode mobile communication terminal and RF receiving and transmitting circuit, method |
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| CN (1) | CN101043228A (en) |
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| CN101420238B (en) * | 2007-10-26 | 2012-07-25 | 海华科技股份有限公司 | Filtering device and method used for dual frequency band sensing circuit |
| WO2012126260A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method for improving receiving sensitivity of terminal and terminal |
| CN104218967A (en) * | 2013-06-03 | 2014-12-17 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104242966A (en) * | 2013-06-13 | 2014-12-24 | 晨星半导体股份有限公司 | Method and apparatus for noise canceling |
| CN104348509A (en) * | 2013-08-02 | 2015-02-11 | 中兴通讯股份有限公司 | Radio frequency front-end device and multiplexing method of radio frequency front-end control interface |
| CN105680824A (en) * | 2016-01-08 | 2016-06-15 | 上海卫星工程研究所 | Remote double-control radio frequency link attenuation box |
| CN107623526A (en) * | 2017-08-24 | 2018-01-23 | 深圳市盛路物联通讯技术有限公司 | A kind of method and communication terminal for adjusting antenna receiving sensitivity |
| 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 |
| CN108347251A (en) * | 2017-01-25 | 2018-07-31 | 展讯通信（上海）有限公司 | RF front-end circuit |
| CN109660267A (en) * | 2018-12-10 | 2019-04-19 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN111163441A (en) * | 2020-04-03 | 2020-05-15 | 北京全路通信信号研究设计院集团有限公司 | Dual-mode vehicle-mounted radio station system |
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| CN101420238B (en) * | 2007-10-26 | 2012-07-25 | 海华科技股份有限公司 | Filtering device and method used for dual frequency band sensing circuit |
| WO2012126260A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method for improving receiving sensitivity of terminal and terminal |
| CN104218967A (en) * | 2013-06-03 | 2014-12-17 | 深圳富泰宏精密工业有限公司 | Wireless communication device |
| CN104242966B (en) * | 2013-06-13 | 2016-09-14 | 晨星半导体股份有限公司 | Noise cancellation method and noise elimination apparatus |
| CN104242966A (en) * | 2013-06-13 | 2014-12-24 | 晨星半导体股份有限公司 | Method and apparatus for noise canceling |
| CN104348509A (en) * | 2013-08-02 | 2015-02-11 | 中兴通讯股份有限公司 | Radio frequency front-end device and multiplexing method of radio frequency front-end control interface |
| CN104348509B (en) * | 2013-08-02 | 2018-08-28 | 南京中兴软件有限责任公司 | The multiplexing method of radio frequency front-end devices and radio-frequency front-end control interface |
| CN105680824A (en) * | 2016-01-08 | 2016-06-15 | 上海卫星工程研究所 | Remote double-control radio frequency link attenuation box |
| CN105680824B (en) * | 2016-01-08 | 2018-05-04 | 上海卫星工程研究所 | A kind of remote this dual control radio frequency link attenuation box |
| CN108347251B (en) * | 2017-01-25 | 2019-11-05 | 展讯通信（上海）有限公司 | RF front-end circuit |
| CN108347251A (en) * | 2017-01-25 | 2018-07-31 | 展讯通信（上海）有限公司 | RF front-end circuit |
| CN107623526A (en) * | 2017-08-24 | 2018-01-23 | 深圳市盛路物联通讯技术有限公司 | A kind of method and communication terminal for adjusting antenna receiving sensitivity |
| CN107623526B (en) * | 2017-08-24 | 2019-11-19 | 深圳市盛路物联通讯技术有限公司 | A kind of method and communication terminal adjusting antenna receiving sensitivity |
| 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 |
| CN109660267A (en) * | 2018-12-10 | 2019-04-19 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN111163441A (en) * | 2020-04-03 | 2020-05-15 | 北京全路通信信号研究设计院集团有限公司 | Dual-mode vehicle-mounted radio station system |
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