CN203014803U - Mobile terminal, base-band chip and radio frequency chip - Google Patents
Mobile terminal, base-band chip and radio frequency chip Download PDFInfo
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- CN203014803U CN203014803U CN2012206735120U CN201220673512U CN203014803U CN 203014803 U CN203014803 U CN 203014803U CN 2012206735120 U CN2012206735120 U CN 2012206735120U CN 201220673512 U CN201220673512 U CN 201220673512U CN 203014803 U CN203014803 U CN 203014803U
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Abstract
The utility model relates to a mobile terminal, a base-band chip and a radio frequency chip. The mobile terminal comprises the base-band chip and the radio frequency chip. According to the radio frequency chip, radio frequency modules in all communication modes commonly use one crystal oscillator to generate oscillation signals; according to the base-band chip, sampling of output signals acquired by sampling modules corresponding to each radio frequency module is carried out to acquire sampling signals; phase compensation on each sampling signal is carried out by a compensation module according to frequency deviation between the output signals and corresponding base station signals to acquire communication signals, so frequency synchronization of each communication signal and the corresponding base station signal is realized. The mobile terminal reduces cost and power consumption of the radio frequency chip and the base-band chip in the multi-mode mobile terminal and avoids a complex clock switching process.
Description
Technical field
The utility model relates to mobile communication technology field, particularly mobile terminal, baseband chip and radio frequency chip.
Background technology
Radio frequency chip and baseband chip are the important component parts of mobile terminal, and mobile terminal is processed data that receive or to be sent and signal by baseband chip by radio frequency chip transceiving data and signal.As shown in Figure 1 be the radio frequency chip of the moving terminal of existing injection frequency displacement and the structural representation of baseband chip.With reference to figure 1, described radio frequency chip 11 comprises: crystal oscillator 111, frequency synthesizer 112, frequency mixer 113, low pass filter 114 and antenna 115.Described baseband chip 12 comprises: communication module 121 and utility module 122.Wherein, described communication module 121 comprises the first phase-locked loop 1211 and clock distribution topology 1212; Described utility module 122 comprises the second phase-locked loop 1221 and clock distribution topology 1222.In baseband chip 12, described utility module 122 is circuit modules irrelevant with the communication pattern of mobile terminal.
The operation principle of described radio frequency chip 11 and described baseband chip 12 is as follows: in the situation that the communication module 121 in described baseband chip 12 or utility module 122 need reference clock, described crystal oscillator 111 enters operating state to produce oscillator signal, and described baseband chip 12 can be with described oscillator signal as the reference clock.Particularly, in described baseband chip 12, the first phase-locked loop 1211 of described communication module 121 and the second phase-locked loop 1221 of described utility module 122 respectively with described oscillator signal as separately reference clock.Further, the clock distribution topology by separately (being clock distribution topology 1212 in communication module 121 and the clock distribution topology 1222 in the utility module 122) reference clock that obtains different frequency take described reference clock as benchmark uses for other modules in baseband chip 12.
When mobile terminal and base station communicate, owing to may having frequency shift (FS) between mobile terminal and base station, therefore need the oscillator signal that the described crystal oscillator 111 of fine setting produces frequency so that mobile terminal synchronize with the base station holding frequency.Detailed process is as follows: continue with reference to figure 1, produce oscillator signal by described crystal oscillator 111, carry out frequency synthesis to produce local carrier via 112 pairs of oscillator signals of frequency synthesizer, by frequency mixer 113, base station signal and the local carrier that receives carried out mixing to obtain mixed frequency signal, carry out filtering with the removal out of band signal by 114 pairs of mixed frequency signals of low pass filter again, thereby obtain i/q signal (being the inphase quadrature signal).Then, carry out by 12 pairs of described i/q signals of described baseband chip the frequency shift (FS) that a series of computings needing to obtain adjustment, and this frequency shift (FS) is converted to automatic frequency control (Automatic Frequency Control, AFC) voltage.At last, by described AFC voltage, the frequency of the oscillator signal of described crystal oscillator 111 generations is finely tuned, thus the correction of frequency skew.
For the many logical mobile terminals of multimode, because a plurality of communication patterns of needs support are communicated by letter simultaneously, baseband chip needs the base station frequency maintenance of while and a plurality of communication patterns to synchronize to guarantee the communication quality of respective communication pattern so.Existing method is to use a plurality of crystal oscillators in radio frequency chip, each communication pattern uses separately a crystal oscillator, the i/q signal that baseband chip is exported radio frequency chip under different communication modes respectively carries out computing presses to obtain corresponding automatic control electric, then presses crystal oscillator corresponding to fine setting respectively with correction frequency shift (FS) separately by each automatic control electric.
As shown in Figure 2 be the how radio frequency chip of logical mobile terminal and the structural representation of baseband chip of existing multimode.With reference to figure 2, radio frequency chip 21 comprises a plurality of radio-frequency modules, as radio-frequency module 211, radio-frequency module 212 ..., radio-frequency module 21n, the structure in each radio-frequency module is identical with the radio frequency chip 11 in Fig. 1, is not described in detail at this.Baseband chip 22 comprises a plurality of communication modules, as communication module 221, communication module 222 ..., communication module 22n, the communication module 121 in the baseband chip 12 in the structure in each communication module and Fig. 1 is identical, is not described in detail at this.The oscillator signal that each communication module produces with the crystal oscillator in the radio-frequency module of correspondence respectively is as the reference clock, and the oscillator signal that produces as the crystal oscillator in radio-frequency module 211 is as the reference clock (reference clock 1 as shown in Figure 2) of communication module 221.
when mobile terminal need to support that simultaneously a plurality of communication patterns are communicated by letter simultaneously, the radio-frequency module that each communication pattern is corresponding produces respectively oscillator signal, each radio-frequency module is exported respectively corresponding i/q signal (i/q signal 1 as shown in Figure 2, i/q signal 2, i/q signal n) to baseband chip 22, in baseband chip 22, corresponding communication module is carried out computing with the frequency shift (FS) between the base station that obtains baseband chip 22 and each communication pattern to each i/q signal respectively, and this each frequency shift (FS) is converted to each AFC voltage (AFC voltage 1 as shown in Figure 2, AFC voltage 2, AFC voltage n) crystal oscillator in the radio-frequency module of fine setting correspondence respectively is to correct frequency shift (FS) separately.In practice, in the situation that a plurality of crystal oscillators are set in radio frequency chip not only cost are very high but also a plurality of crystal oscillators are worked simultaneously and need to consume much electricity.
On the other hand, continue also to comprise utility module 222 with reference to figure 2 in baseband chip 22, the utility module 122 in the baseband chip 12 in the structure of this utility module 222 and Fig. 1 is identical, is not described in detail at this.Because utility module 222 is suitable for the irrelevant circuit module of each communication pattern, therefore the reference clock of this utility module 222 can be selected from the reference clock of any one communication pattern, can receive by a multiplexer 223 is set the reference clock of each communication pattern as shown in Figure 2, and therefrom select one as the reference clock of this utility module 222.Such design architecture will produce a problem: suppose that current radio-frequency module 211 and radio-frequency module 212 are in running order, the reference clock of utility module 222 is from the oscillator signal (being reference clock 1) of the crystal oscillator generation of radio-frequency module 211.If the user need to close radio-frequency module 211, the reference clock 1 of radio-frequency module 211 generations also will be closed, and the reference clock of utility module 222 can not switch to the oscillator signal (being reference clock 2) that the crystal oscillator of radio-frequency module 212 produces immediately, only have and wait for utility module 222 penetration depth sleep states and then could select reference clock 2 when waking up, lead under state thereby make in multimode, the clock of baseband chip switches very complicated more.
Can to be US6922406B2, denomination of invention with reference to publication number be the U.S. Patent application file of " method of Method of Synchronizing Base Stations(synchronising base station) " to more technical schemes of synchronizeing with base station frequency about mobile terminal.
The utility model content
The problem that the utility model solves is to reduce cost and the power consumption of the interior radio frequency chip of multi-module mobile terminal and baseband chip, has also exempted complicated clock handoff procedure.
For addressing the above problem, embodiment of the present utility model provides a kind of mobile terminal, comprise baseband chip and radio frequency chip, described radio frequency chip comprises the first radio-frequency module and at least one second radio-frequency module, wherein each radio-frequency module includes the signal processing module that is suitable for oscillator signal and the base station signal that receives are processed to obtain output signal, described the first radio-frequency module also comprises the crystal oscillator that is suitable for producing described oscillator signal, and all described second radio-frequency modules share described crystal oscillator;
Described baseband chip comprises and a plurality ofly connecting with corresponding radio-frequency module respectively, be suitable for according to the default sampling period, the described output signal of coming self-corresponding radio-frequency module being sampled to obtain sampling module and a plurality of compensating module that is connected with corresponding sampling module respectively of sampled signal; Described compensating module comprises the automatic frequency control module of the described output signal that is suitable for determining self-corresponding radio-frequency module and the frequency shift (FS) between described base station signal and is suitable for utilizing described frequency shift (FS) to carry out phase compensation with the phase compensator of acquisition signal of communication to described sampled signal.
Alternatively, described signal processing module comprises the antenna that is suitable for receiving base station signal, be connected with described crystal oscillator, be suitable for described oscillator signal is carried out frequency synthesis to produce the frequency synthesizer of local carrier, be connected, be suitable for the described base station signal that to receive and described local carrier with described frequency synthesizer and carry out mixing generating the frequency mixer of mixed frequency signal, and be connected, be suitable for removing out of band signal in described mixed frequency signal with described frequency mixer to obtain the low pass filter of described output signal.
Alternatively, described baseband chip also comprises corresponding with each radio-frequency module respectively communication module and is connected, is suitable for providing to the phase-locked loop circuit of corresponding communication module as the reference clock with described oscillator signal with corresponding communication module respectively.
Alternatively, described baseband chip also comprises with the utility module of described oscillator signal as the reference clock.
Alternatively, described baseband chip also comprises with described crystal oscillator and is connected, is suitable for controlling the starting of oscillation of described crystal oscillator and the control module of closing.
Based on above-mentioned mobile terminal, embodiment of the present utility model also provides a kind of radio frequency chip, comprise the first radio-frequency module and at least one second radio-frequency module, wherein each radio-frequency module includes the signal processing module that is suitable for oscillator signal and the base station signal that receives are processed to obtain output signal, described the first radio-frequency module also comprises the crystal oscillator that is suitable for producing oscillator signal, and all described second radio-frequency modules share described crystal oscillator.
Based on above-mentioned mobile terminal, embodiment of the present utility model also provides a kind of baseband chip, comprise a plurality of respectively with above-mentioned radio frequency chip in corresponding radio-frequency module connect, be suitable for according to the default sampling period, the described output signal of coming self-corresponding radio-frequency module to be sampled to obtain sampling module and a plurality of compensating module that is connected with sampling module with corresponding radio-frequency module respectively of sampled signal; Described compensating module comprises the automatic frequency control module of the described output signal that is suitable for determining self-corresponding radio-frequency module and the frequency shift (FS) between described base station signal and is suitable for utilizing described frequency shift (FS) to carry out phase compensation with the phase compensator of acquisition signal of communication to described sampled signal.
Compared with prior art, the technical solution of the utility model has following beneficial effect:
No matter mobile terminal is supported the how many kinds of communication pattern, and in radio frequency chip, the radio-frequency module of all communication patterns shares the oscillator signal that a crystal oscillator produces.In baseband chip, by the sampling module corresponding with each radio-frequency module, the output signal that obtains is sampled and obtain sampled signal, and have compensating module according to the frequency shift (FS) between this output signal and corresponding base station signal, sampled signal separately to be carried out phase compensation obtaining signal of communication, thereby realize the Frequency Synchronization of each signal of communication and corresponding base station signal.Owing to only using a crystal oscillator in radio frequency chip, therefore reduced chip cost, saved chip power-consumption.
Further, owing to only having a crystal oscillator in radio frequency chip, utility module in baseband chip and each communication module are all that the oscillator signal that produces with this crystal oscillator is as the reference clock, therefore exempted also that in the prior art, utility module may need to carry out complicated clock handoff procedure, improved the efficient of mobile terminal processing signals.
Description of drawings
Fig. 1 is the radio frequency chip of the moving terminal of existing injection frequency displacement and the structural representation of baseband chip;
Fig. 2 is that existing multimode is led to the radio frequency chip of mobile terminal and the structural representation of baseband chip more;
Fig. 3 is that a kind of multimode of the present utility model is led to the radio frequency chip of mobile terminal and the structural representation of baseband chip more.
Embodiment
Problem for prior art, the inventor is through research, a kind of mobile terminal and signal processing method thereof, baseband chip and radio frequency chip are provided, have both reduced cost and the power consumption of the interior radio frequency chip of multi-module mobile terminal and baseband chip, exempted again complicated clock handoff procedure.
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Set forth detail in the following description so that fully understand the utility model.But the utility model can be different from alternate manner described here and implements with multiple, and those skilled in the art can be in the situation that do similar popularization without prejudice to the utility model intension.Therefore the utility model is not subjected to the restriction of following public embodiment.
As shown in Figure 3 be the how radio frequency chip of logical mobile terminal and the structural representation of baseband chip of a kind of multimode of the present utility model.With reference to figure 3, at first, respectively the internal structure of radio frequency chip 31 and baseband chip 32 is described in detail.
Described radio frequency chip 31 comprises a plurality of radio-frequency modules, radio-frequency module 311 as shown in Figure 3, radio-frequency module 312 ..., radio-frequency module 31n, wherein n is more than or equal to 2.Wherein, the number of the communication pattern that can support according to mobile terminal of the concrete number of radio-frequency module is determined.
Unlike the prior art be, in the present embodiment, described radio frequency chip 31 comprises two kinds of radio-frequency modules, a kind of radio-frequency module comprises crystal oscillator and signal processing module; Another kind of radio-frequency module comprises signal processing module, but does not comprise crystal oscillator.Specifically, continue with reference to figure 3, in radio frequency chip 31, described radio-frequency module 311 comprises crystal oscillator 3111 and signal processing module, and all the other n-1 radio-frequency module comprises signal processing module, but does not comprise crystal oscillator.In the present embodiment, described signal processing module comprises antenna, frequency synthesizer, frequency mixer and low pass filter.For example, described radio-frequency module 311 comprises frequency synthesizer 3112, frequency mixer 3113, low pass filter 3114 and antenna 3115; Described radio-frequency module 312 comprises frequency synthesizer 3122, frequency mixer 3123, low pass filter 3124 and antenna 3125; Described radio-frequency module 31n comprises frequency synthesizer 31n2, frequency mixer 31n3, low pass filter 31n4 and antenna 31n5.
Described baseband chip 32 comprises a plurality of sampling module and compensating modules corresponding with each radio-frequency module respectively.Specifically, continuation is with reference to figure 3, described baseband chip 32 comprise the sampling module 3211 corresponding with described radio-frequency module 311 and compensating module 321, with sampling module 3221 corresponding to described radio-frequency module 312 and compensating module 322 ..., sampling module 32n1 and the compensating module 32n corresponding with described radio-frequency module 31n.Wherein, each sampling module is used for according to the default sampling period, the described output signal of coming self-corresponding radio-frequency module being sampled to obtain sampled signal.The sampled signal that each compensating module obtains after respectively the output signal of each self-corresponding radio-frequency module being sampled via sampling module is carried out phase compensation to obtain signal of communication.
Each compensating module comprises phase compensator and automatic frequency control module.For example, described compensating module 321 comprises phase compensator 3212 and automatic frequency control module 3213; Described compensating module 322 comprises phase compensator 3222 and automatic frequency control module 3223; Described compensating module 32n comprises phase compensator 32n2 and automatic frequency control module 32n3.
Described baseband chip 32 also comprises corresponding with each radio-frequency module respectively communication module and phase-locked loop circuit.Specifically, continuation is with reference to figure 3, described baseband chip 32 comprise the communication module 3214 corresponding with described radio-frequency module 311 and phase-locked loop circuit 3215, with communication module 3224 corresponding to described radio-frequency module 312 and phase-locked loop circuit 3225 ..., communication module 32n4 and the phase-locked loop circuit 32n5 corresponding with described radio-frequency module 31n.Wherein, the oscillator signal that each phase-locked loop circuit produces with described crystal oscillator 3111 is as the reference clock of the communication module of correspondence, and each communication module is for the treatment of the signal of communication that comes self-corresponding compensating module.
Described baseband chip 32 also comprises utility module 323, and described utility module 323 is circuit modules irrelevant with various communication patterns, for example application processor independently in intelligent mobile terminal.Unlike the prior art, in the present embodiment, owing to only having a crystal oscillator 3111 in radio frequency chip 31, therefore described utility module 323 usually just with the oscillator signal of these crystal oscillator 3111 generations as the reference clock.Described baseband chip 32 also comprises control module 324, and described control module 324 is used for controlling the starting of oscillation of described crystal oscillator 3111 and closing.In actual applications, when the arbitrary communication module in described baseband chip 32 or described utility module 323 needed reference clock, described control module 324 was controlled described crystal oscillator 3111 starting of oscillations to produce oscillator signal as the reference clock of communication module or utility module.And when needing reference clock without any circuit module in described baseband chip 32, described control module 324 is controlled described crystal oscillator 3111 and is closed.
Following basis radio frequency chip as shown in Figure 3 and the structural representation of baseband chip, when mobile terminal was communicated (being how logical multimode is) simultaneously with the base station under plurality of communication schemes, the operation principle of described radio frequency chip 31 and baseband chip 32 was described in detail.Need to prove, the present embodiment is based on described mobile terminal and processes under plurality of communication schemes in the downstream signal process, keep described downstream signal and separately the Frequency Synchronization between base station signal be that example is described.
Described control module 324 is controlled described crystal oscillator 3111 starting of oscillations to produce oscillator signal.Owing to only having a crystal oscillator 3111 in described radio frequency chip 31, therefore in the situation that how logical multimode is, each radio-frequency module shares this crystal oscillator 3111, that is to say, the signal processing module in each radio-frequency module all processes to obtain separately output signal with this crystal oscillator 3111 oscillator signal that produces and the base station signal that receives separately.
In the present embodiment, signal processing module in each radio-frequency module carries out frequency synthesis to produce local carrier by frequency synthesizer to described oscillator signal, common described local carrier comprises sine wave signal and cosine wave signal, and two signal phases differ 90 degree.Base station signal by the corresponding communication pattern of antenna reception.Then, by frequency mixer, base station signal and the described local carrier that receives carried out mixing to generate mixed frequency signal, be about to described base station signal and carry out corresponding two mixed frequency signals of mixing generation with sine wave signal and cosine wave signal respectively.Then, remove out of band signal in described mixed frequency signal obtaining described output signal by low pass filter, wherein said out of band signal refers to the part signal outside the logical scope of the band of described low pass filter.Owing to both having comprised the mixed frequency signal of sine wave signal and base station signal in described mixed frequency signal, also comprise the mixed frequency signal of cosine wave signal and base station signal, therefore described output signal is inphase quadrature signal (being i/q signal).Need to prove, be not limited to above-described antenna, frequency synthesizer, frequency mixer and low pass filter in described signal processing module, can also increase corresponding processing module according to the needs that signal is processed in actual applications, this does not affect essence of the present utility model, is not described in detail at this.
Because the base station frequency of each communication pattern is not identical as a rule, so can there be frequency shift (FS) between the output signal of each radio-frequency module acquisition and the base station signal under each communication pattern.Be different from prior art, each radio-frequency module is not a private crystal oscillator, therefore can't correct the output signal of each radio-frequency module and the frequency shift (FS) between base station signal by finely tuning this crystal oscillator.Therefore, the inventor considers, in baseband chip, by the output signal that each radio-frequency module is obtained carry out that phase compensation realizes and the corresponding base station signal between Frequency Synchronization.
In the present embodiment, the output signal of each radio-frequency module output is first carried out sampling processing obtaining sampled signal by sampling module corresponding in described baseband chip 32 respectively, then by the compensating module of correspondence, sampled signal is carried out phase compensation.For example, continue with reference to figure 3, the output signal 1 of described radio-frequency module 311 outputs is carried out sampling processing obtaining sampled signal by described sampling module 3211, then carries out phase compensation via 321 pairs of described sampled signals of described compensating module; The output signal 2 of described radio-frequency module 312 outputs is carried out sampling processing obtaining sampled signal by described sampling module 3221, then carries out phase compensation via 322 pairs of described sampled signals of described compensating module; The output signal n of described radio-frequency module 31n output carries out sampling processing obtaining sampled signal by described sampling module 32n1, then carries out phase compensation via described compensating module 32n.
Specifically, the output signal of each radio-frequency module output is analog signal, the sampling module corresponding with each radio-frequency module (being the modulus sampling module here) samples to obtain sampled signal according to the default sampling period to output signal, and described sampled signal is digital signal.Wherein, the described default sampling period different communication modes corresponding according to each radio-frequency module set, and in the present embodiment, do not limit the concrete periodic quantity in described default sampling period.
Each described compensating module determines to come the described output signal of self-corresponding radio-frequency module and the frequency shift (FS) between described base station signal by the automatic frequency control module.Those skilled in the art understand, in each radio-frequency module, described frequency mixer is in fact that two different frequencies (base station signal and local carrier of the communication pattern that namely this radio-frequency module is corresponding) are transformed into a mixed frequency signal with both relevant new frequency of oscillation, this new frequency of oscillation is the poor of above-mentioned two different frequencies, and the difference of this different frequency is exactly the frequency shift (FS) between output signal and base station signal.But can't determine this frequency shift (FS) in each radio-frequency module, need to determine by the automatic frequency control module in the compensating module corresponding with each radio-frequency module.In actual applications, described automatic frequency control module can draw this frequency shift (FS) by internal arithmetic.
Phase compensator in each described compensating module carries out phase compensation to obtain signal of communication according to frequency shift (FS) to described sampled signal.
For instance, if the sampled signal without frequency deviation is R (n), between local carrier (oscillator signal that is produced by crystal oscillator obtains through after frequency synthesis) and base station signal, difference on the frequency is that Δ f(is described frequency shift (FS)), the sample count value is n, the default sampling period is t
s, oscillator signal and the initial phase deviation between base station signal that crystal oscillator produces are Φ
Init, the sampled signal of output signal after over-sampling of any radio-frequency module output is that R ' (n) can be expressed as:
Wherein, described sampled signal without frequency deviation is that R (n) is equivalent to the base station signal of each communication pattern according to default separately sampling period t
sSampled signal after sampling.Between described local carrier and base station signal, difference on the frequency is that Δ f is equivalent to the described output signal of the required definite next self-corresponding radio-frequency module of described automatic frequency control module and the frequency shift (FS) between described base station signal.
Further, the described phase compensator in each compensating module can be to (n) compensating φ=2 π * Δ f * n * t through the sampled signal R ' after the sampling module sampling processing
sPhase deviation, namely pass through after the sampling module sampling processing each sampled signal R ' (n) phase compensator by separately carry out the signal of communication R that obtains after phase compensation " be (n):
Can find out the signal of communication R of each compensating module output " is (n) that R (n) only exists the phase difference Φ that fixes with sampled signal without frequency deviation
InitThereby, " the Frequency Synchronization between the base station signal under communication pattern (n) and separately that realized each signal of communication R.
On the other hand, in described baseband chip 32, described utility module 323 and each communication module (communication module 3214 as shown in Figure 3, communication module 3224 ..., communication module 32n4) oscillator signal that all produces with described crystal oscillator 3111 is as the reference clock, therefore compared with prior art, exempted complicated clock handoff procedure.
Need to prove, the radio frequency chip that the present embodiment provides and the structural representation of baseband chip are mainly used in multimode and lead to mobile terminal more.For single mode single-pass (being the injection frequency) mobile terminal, also can adopt radio frequency chip that the present embodiment provides and the structure of baseband chip, namely obtain sampled signal by the output signal of radio frequency chip output is first sampled, then sampled signal is realized Frequency Synchronization with base station signal through phase compensation.But owing to frequently itself only needing a crystal oscillator in chip at injection, therefore preferred mode is still come the frequency of synchronising base station signal by the frequency of direct this crystal oscillator of fine setting, namely adopt in the moving terminal of injection frequency displacement as shown in Figure 1 radio frequency chip and the structural representation of baseband chip be good.
although the utility model with preferred embodiment openly as above, but it is not to limit the utility model, any those skilled in the art are not within breaking away from spirit and scope of the present utility model, can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to the technical solution of the utility model, therefore, every content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification, the protection range that all belongs to the technical solution of the utility model.
Claims (11)
1. a mobile terminal, comprise baseband chip and radio frequency chip, it is characterized in that,
Described radio frequency chip comprises the first radio-frequency module and at least one second radio-frequency module, wherein each radio-frequency module includes the signal processing module that is suitable for oscillator signal and the base station signal that receives are processed to obtain output signal, described the first radio-frequency module also comprises the crystal oscillator that is suitable for producing described oscillator signal, and all described second radio-frequency modules share described crystal oscillator;
Described baseband chip comprises and a plurality ofly connecting with corresponding radio-frequency module respectively, be suitable for according to the default sampling period, the described output signal of coming self-corresponding radio-frequency module being sampled to obtain sampling module and a plurality of compensating module that is connected with corresponding sampling module respectively of sampled signal; Described compensating module comprises the automatic frequency control module of the described output signal that is suitable for determining self-corresponding radio-frequency module and the frequency shift (FS) between described base station signal and is suitable for utilizing described frequency shift (FS) to carry out phase compensation with the phase compensator of acquisition signal of communication to described sampled signal.
2. mobile terminal according to claim 1, is characterized in that, described signal processing module comprises:
Be suitable for receiving the antenna of base station signal,
Be connected with described crystal oscillator, be suitable for described oscillator signal is carried out frequency synthesis with the frequency synthesizer of generation local carrier,
The described base station signal and the described local carrier that are connected with described frequency synthesizer, are suitable for receiving carry out mixing with the frequency mixer of generation mixed frequency signal, and
Be connected, be suitable for removing out of band signal in described mixed frequency signal with described frequency mixer to obtain the low pass filter of described output signal.
3. mobile terminal according to claim 1, it is characterized in that, described baseband chip also comprises corresponding with each radio-frequency module respectively communication module and is connected, is suitable for providing to the phase-locked loop circuit of corresponding communication module as the reference clock with described oscillator signal with corresponding communication module respectively.
4. mobile terminal according to claim 1, is characterized in that, described baseband chip also comprises with the utility module of described oscillator signal as the reference clock.
5. mobile terminal according to claim 1, is characterized in that, described baseband chip also comprises with described crystal oscillator and being connected, is suitable for controlling the starting of oscillation of described crystal oscillator and the control module of closing.
6. radio frequency chip, it is characterized in that, comprise the first radio-frequency module and at least one second radio-frequency module, wherein each radio-frequency module includes the signal processing module that is suitable for oscillator signal and the base station signal that receives are processed to obtain output signal, described the first radio-frequency module also comprises the crystal oscillator that is suitable for producing oscillator signal, and all described second radio-frequency modules share described crystal oscillator.
7. radio frequency chip according to claim 6, is characterized in that, described signal processing module comprises:
Be suitable for receiving the antenna of base station signal,
Be connected with described crystal oscillator, be suitable for described oscillator signal is carried out frequency synthesis with the frequency synthesizer of generation local carrier,
The described base station signal and the described local carrier that are connected with described frequency synthesizer, are suitable for receiving carry out mixing with the frequency mixer of generation mixed frequency signal, and
Be connected, be suitable for removing out of band signal in described mixed frequency signal with described frequency mixer to obtain the low pass filter of described output signal.
8. baseband chip, it is characterized in that, comprise a plurality of respectively with the described radio frequency chip of claim 6 or 7 in corresponding radio-frequency module connect, be suitable for according to the default sampling period, the described output signal of coming self-corresponding radio-frequency module to be sampled to obtain sampling module and a plurality of compensating module that is connected with sampling module with corresponding radio-frequency module respectively of sampled signal; Described compensating module comprises the automatic frequency control module of the described output signal that is suitable for determining self-corresponding radio-frequency module and the frequency shift (FS) between described base station signal and is suitable for utilizing described frequency shift (FS) to carry out phase compensation with the phase compensator of acquisition signal of communication to described sampled signal.
9. baseband chip according to claim 8, it is characterized in that, described baseband chip also comprises corresponding with each radio-frequency module respectively communication module and is connected, is suitable for providing to the phase-locked loop circuit of corresponding communication module as the reference clock with described oscillator signal with corresponding communication module respectively.
10. baseband chip according to claim 8, is characterized in that, described baseband chip also comprises with the utility module of described oscillator signal as the reference clock.
11. baseband chip according to claim 8 is characterized in that, described baseband chip also comprises with described crystal oscillator and being connected, is suitable for controlling the starting of oscillation of described crystal oscillator and the control module of closing.
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| CN2012206735120U CN203014803U (en) | 2012-12-07 | 2012-12-07 | Mobile terminal, base-band chip and radio frequency chip |
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| CN2012206735120U CN203014803U (en) | 2012-12-07 | 2012-12-07 | Mobile terminal, base-band chip and radio frequency chip |
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| CN103856233A (en) * | 2012-12-07 | 2014-06-11 | 展讯通信（上海）有限公司 | Mobile terminal and signal processing method, baseband chip and radio frequency chip of the mobile terminal |
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2012
- 2012-12-07 CN CN2012206735120U patent/CN203014803U/en not_active Expired - Lifetime
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| CN103856233A (en) * | 2012-12-07 | 2014-06-11 | 展讯通信（上海）有限公司 | Mobile terminal and signal processing method, baseband chip and radio frequency chip of the mobile terminal |
| CN103856233B (en) * | 2012-12-07 | 2016-04-06 | 展讯通信（上海）有限公司 | Mobile terminal and signal processing method, baseband chip, radio frequency chip |
| CN104618024A (en) * | 2015-01-04 | 2015-05-13 | 西南交通大学 | Anonymous microwave signal long-distance optical fiber phase-stable transmission device eliminating coherent Rayleigh noise |
| CN104618024B (en) * | 2015-01-04 | 2017-01-11 | 西南交通大学 | Anonymous microwave signal long-distance optical fiber phase-stable transmission device eliminating coherent Rayleigh noise |
| CN106227031A (en) * | 2016-05-25 | 2016-12-14 | 广州市国飞信息科技有限公司 | A kind of receiver module and single-chip realize satellite and tame and punctual method |
| CN113556145A (en) * | 2020-04-24 | 2021-10-26 | 大唐移动通信设备有限公司 | Data processing method and device, electronic equipment and storage medium |
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