CN104660291B - Device and method for receiving wireless signals - Google Patents
Device and method for receiving wireless signals Download PDFInfo
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- CN104660291B CN104660291B CN201310585195.6A CN201310585195A CN104660291B CN 104660291 B CN104660291 B CN 104660291B CN 201310585195 A CN201310585195 A CN 201310585195A CN 104660291 B CN104660291 B CN 104660291B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
- H04B1/0075—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands using different intermediate frequencied for the different bands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
- H04B1/0082—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
Abstract
The invention discloses a device and a method for receiving wireless signals, which can receive at least three signals with different center frequencies. The embodiment of the device comprises a receiving circuit, a mixing circuit and a digital signal producing circuit. The receiving circuit is used for producing a receiving signal according to a wireless signal. The wireless signal comprises a first wireless signal, a second wireless signal and a third wireless signal, which have different center frequencies. The mixing circuit is used for processing the receiving signal according to a local oscillation frequency so as to produce a mixing signal. The mixing signal comprises a first if signal, a second if signal and a third if signal. The center frequency of the third if signal is greater than the center frequencies of the first if signal and the second if signal. The digital signal producing circuit is used for respectively processing the first if signal, the second if signal and the third if signal according to a sampling frequency so as to produce a first digital signal, a second digital signal and a third digital signal. The sampling frequency is less than the highest frequency of the third if signal by two times.
Description
Technical field
The present invention is with regard to signal receiving device and method, especially with respect to wireless signal receiver and method.
Background technology
Signal is generally had lower frequency when being processed in circuit and is processed with profit and save power consumption, but in through wireless
Then there is upper frequency to avoid transmission loss when mode is transmitted, therefore, the fundamental frequency signal of low frequency can be changed first by radio circuit
For high frequency radiofrequency signal to be wirelessly transferred, and the radiofrequency signal of high frequency then can be converted to the fundamental frequency of low frequency by radio circuit
Signal is to process.By taking the reception of satellite positioning signal as an example, the frequency of common satellite positioning signal is more in more than 1.5GHz, should
Satellite positioning signal is first converted to intermediate-freuqncy signal Jing after radio circuit reception（Its frequency is about tens of MHz）, then it is converted to fundamental frequency
Signal（Its frequency about number MHz to ten numbers MHz）If, however, a satellite positioning signal receiver supports that plural number plants satellite fix
System（The global positioning system in such as U.S.（Global Positioning System,GPS）, Europe Galileo positioning system
System（Galileo Positioning System,Galileo）, Russia GLONASS（Global
Navigation Satellite System,Glonass）And the Beidou navigation satellite system of China（Beidou/Compass
Navigation Satellite System,Beidou）, due to different global position systems（Such as GPS system, Glonass
System and Beidou systems）Signal frequency it is different, the satellite positioning signal receiver generally need to be carried for every kind of satellite-signal
For special local oscillator and frequency mixer, to produce corresponding intermediate-freuqncy signal, although this kind of practice intuition, also improves
The cost of receiver.Other prior arts refer to the nothing of the intelligent apparatus of IEEE ISSCCs the 19th in 2013
Line passes receipts machine（”Wireless Transceivers of Smart Devices”,Session19,ISSCC,2013）Discussion
Content.
In addition, aforementioned radiofrequency signal is needed at the sampling of analog-to-digital converter during fundamental frequency signal is switched to
Reason.According to Nyquist（Nyquist）Theorem, sampling frequency need to be more than two times of the highest frequency of sampled signal to rebuild quilt
The waveform of sampled signal, otherwise sampling result can produce aliasing（Aliasing）, that is, sampling result can correspond to an image frequency
And the frequency of the non-corresponding sampled signal, however, sampling frequency heals Gao Ye represent the efficiency to analog-to-digital converter with
The demand of power consumption is bigger, while also implying that higher cost.
The content of the invention
In view of one of the deficiency of prior art, present invention purpose is to provide a kind of wireless signal receiver and method,
To solve the problem of prior art.
Another object of the present invention is to provide a kind of wireless signal receiver and method, with using single local oscillations
Frequency come process plural number plant centre frequency difference wireless signal, it is thereby cost-effective.
The further object of the present invention is to provide a kind of wireless signal receiver and method, with using relatively low sampling frequency
Rate is sampled to signal, thereby reduces efficiency and power consumption requirements.
The present invention discloses a kind of wireless signal receiver, can receive the signal of at least three kinds of centre frequency differences.
One of described device embodiment is included：One receiving circuit, for receiving a wireless signal, and producing one according to this signal is received, its
In the wireless signal include one first wireless signal, a second wireless singal and one the 3rd wireless signal, and this first, second
It is different from the centre frequency of the 3rd wireless signal；One mixting circuit, for processing the reception letter according to a local oscillating frequency
Number to produce a mixed frequency signal, wherein the mixed frequency signal includes one first intermediate-freuqncy signal, one second intermediate-freuqncy signal and the 3rd
Intermediate-freuqncy signal, this first, second with the 3rd intermediate-freuqncy signal sequentially to should first, second with the 3rd wireless signal or sequentially corresponding
Three, the second and first wireless signal, and the centre frequency of the 3rd intermediate-freuqncy signal more than first and second intermediate-freuqncy signal it
Centre frequency；And one data signal produce circuit, comprising one first data signal produce path, one second data signal produce
Path and one the 3rd data signal produce path, and wherein first data signal produces path and is used for according to the first intermediate frequency letter
Number centre frequency and bandwidth and a first sampling frequency processing in-phase component and the orthorhombic phase part of the mixed frequency signal
At least one, to produce one first data signal, second data signal produces path and is used for according to the second intermediate frequency letter
Number centre frequency and bandwidth and one second sampling frequency processing in-phase component and the orthorhombic phase part of the mixed frequency signal
At least one, to produce one second data signal, the 3rd data signal produces path and is used for believing according to the 3rd intermediate frequency
Number centre frequency and bandwidth and one the 3rd sampling frequency processing in-phase component and the orthorhombic phase part of the mixed frequency signal
At least one, to produce one the 3rd data signal, and the 3rd sampling frequency less than the most high frequency of the 3rd intermediate-freuqncy signal
Two times of rate, thereby save power consumption.
Another embodiment of the wireless signal receiver of the present invention is included：One receiving circuit, for receiving a wireless communication
Number, and a reception signal is produced according to this, the wherein wireless signal includes one first wireless signal, a second wireless singal and
3rd wireless signal, and this is first, second different from the centre frequency of the 3rd wireless signal；One mixting circuit, for foundation
One local oscillating frequency processes the reception signal to produce a mixed frequency signal, and wherein the mixed frequency signal is believed comprising one first intermediate frequency
Number, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, and the centre frequency of the 3rd intermediate-freuqncy signal for this first, second with
The maximum or reckling in the centre frequency of the 3rd intermediate-freuqncy signal；And one data signal produce circuit, comprising double-mold numeral
Signal generating circuit and single mode numeral signal generating circuit, wherein the bimodule digital signal generating circuit be used for according to this
One and second intermediate-freuqncy signal centre frequency and bandwidth and a first sampling frequency processing the in-phase component of the mixed frequency signal
With orthorhombic phase part at least one, to produce one first data signal, and single mode numeral signal generating circuit is used for
The homophase portion of the mixed frequency signal is processed with bandwidth and one second sampling frequency according to the centre frequency of the 3rd intermediate-freuqncy signal
Point with orthorhombic phase part at least one, to produce one second data signal.The centre frequency of above-mentioned 3rd intermediate-freuqncy signal
If the maximum, second sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal；3rd intermediate-freuqncy signal it
If centre frequency reckling, the first sampling frequency is less than two times of the highest frequency of first and second intermediate-freuqncy signal, mat
This saves power consumption.
The present invention separately discloses a kind of radio signal receiving method, can receive the letter of at least three kinds of centre frequency differences
Number.One of methods described embodiment is comprised the steps of：A wireless signal is received, and produces one according to this and receive signal, wherein should
Wireless signal includes one first wireless signal, a second wireless singal and one the 3rd wireless signal, and this first, second and the
The centre frequency of three wireless signals is different；The reception signal is processed according to an at least local oscillating frequency to produce mixing letter
Number, wherein the mixed frequency signal include one first intermediate-freuqncy signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, this first,
Second and the 3rd intermediate-freuqncy signal sequentially to should first, second and the 3rd wireless signal or sequentially to should the three, the second and
One wireless signal, and the centre frequency of the 3rd intermediate-freuqncy signal is more than the centre frequency of first and second intermediate-freuqncy signal；Foundation
The centre frequency of first intermediate-freuqncy signal process with bandwidth and a first sampling frequency in-phase component of the mixed frequency signal with
At least one of orthorhombic phase part, to produce one first data signal；According to second intermediate-freuqncy signal centre frequency with
Bandwidth and one second sampling frequency come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, with
Produce one second data signal；And the centre frequency according to the 3rd intermediate-freuqncy signal is come with bandwidth and one the 3rd sampling frequency
Process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one the 3rd data signal, wherein
3rd sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal.
Another embodiment of the radio signal receiving method of the present invention is comprised the steps of：Receive a wireless signal, and according to
Signal is received to produce one, the wherein wireless signal includes one first wireless signal, a second wireless singal and one the 3rd nothing
Line signal, and this is first, second different from the centre frequency of the 3rd wireless signal；Process according to an at least local oscillating frequency
The reception signal to produce a mixed frequency signal, wherein the mixed frequency signal comprising one first intermediate-freuqncy signal, one second intermediate-freuqncy signal with
And one the 3rd intermediate-freuqncy signal, and the centre frequency of the 3rd intermediate-freuqncy signal for this first, second and the 3rd intermediate-freuqncy signal center
The maximum or reckling in frequency；According to the centre frequency and bandwidth and one first sampling frequency of first and second intermediate-freuqncy signal
Rate come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one first data signal；
And the centre frequency according to the 3rd intermediate-freuqncy signal processes the same of the mixed frequency signal with bandwidth and one second sampling frequency
Mutually at least one of part and orthorhombic phase part, to produce one second data signal.The center of above-mentioned 3rd intermediate-freuqncy signal
If frequency the maximum, second sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal；3rd intermediate frequency is believed
If number centre frequency reckling, the first sampling frequency less than first and second intermediate-freuqncy signal highest frequency two
Times.
Feature for the present invention, implementation and effect, hereby coordinate schema to make preferred embodiment detailed description as follows.
Description of the drawings
Fig. 1 is the schematic diagram of one of the wireless signal receiver of present invention embodiment；
Fig. 2 is the signal frequency distribution schematic diagram of one of the wireless signal receiver of Fig. 1 embodiment；
Fig. 3 is the signal frequency distribution schematic diagram of another embodiment of the wireless signal receiver of Fig. 1；
Fig. 4 produces the schematic diagram of one of circuit embodiment for the data signal of Fig. 1；
Fig. 5 is the schematic diagram of another embodiment of the wireless signal receiver of the present invention；
Fig. 6 is the signal frequency distribution schematic diagram of one of the wireless signal receiver of Fig. 5 embodiment；
Fig. 7 is the signal frequency distribution schematic diagram of another embodiment of the wireless signal receiver of Fig. 5；
Fig. 8 produces the schematic diagram of one of circuit embodiment for the data signal of Fig. 5；
Fig. 9 is the schematic diagram of one of the radio signal receiving method of present invention embodiment；And
Figure 10 is the schematic diagram of another embodiment of the radio signal receiving method of the present invention.
Specific embodiment
The technical terms of following description refers to the idiom of the art, and such as this specification is to part term
It is illustrated or defines, the explanation system of the part term is defined by the explanation of this specification or definition.
The disclosure content of the present invention includes wireless signal receiver and method, can receive at least three kinds centre frequency phases
Different wireless signal.For example, the wireless signal receiver can receive at least three kinds satellite positioning signals with method（Example
As centre frequency for 1575.42MHz and gps signal with a width of 2.046MHz, centre frequency are all 1575.42MHz bandwidth
It is 1602MHz and the Glonass signals with a width of 9.3MHz and center frequency for the Galileo signals of 4.4MHz, centre frequency
Rate is 1561.098MHz and the Beidou signals with a width of 4.092MHz）, so this is only citing, and other wireless signals are being implemented
For under the premise of possible also received and processed by the present invention.
Fig. 1 is referred to, it is the schematic diagram of one of the wireless signal receiver of present invention embodiment.As illustrated, nothing
Line signal receiving device 100 is included：One receiving circuit 110, for receiving a wireless signal, and producing one according to this signal is received,
Wherein the wireless signal includes one first wireless signal（Such as Beidou signals）, a second wireless singal（For example gps signal or
Galileo signals）And one the 3rd wireless signal（Such as Glonass signals）, and this first, second and the 3rd wireless signal it
Centre frequency is different, and in the present embodiment, this is first, second also different with the bandwidth of the 3rd wireless signal, and wantonly two adjacent nothing
The interval of the centre frequency of line signal is different, but the condition end such as bandwidth and centre frequency interval regards the implementer's of the present invention
Depending on demand；One mixting circuit 120, for according to a local oscillating frequency（Such as frequency is 1558MHz or 1607MHz sheets
Ground frequency of oscillation）The reception signal is processed to produce a mixed frequency signal, wherein the mixed frequency signal includes one first intermediate-freuqncy signal（Example
If frequency is the intermediate-freuqncy signal of (1561.098-1558)=3.098MHz or (1607-1602)=5MHz）, one second intermediate frequency
Signal（Such as frequency is believed for the intermediate frequency of (1575.42-1558)=17.42MHz or (1607-1575.42)=30.58MHz
Number）And one the 3rd intermediate-freuqncy signal（Such as frequency be (1602-1558)=44MHz or (1607-1561.098)=
45.902MHz intermediate-freuqncy signal）, this is first, second sequentially corresponding with the 3rd intermediate-freuqncy signal aforementioned first, second wireless with the 3rd
Signal or sequentially correspond to the three, the second with first wireless signal, and the centre frequency of the 3rd intermediate-freuqncy signal is more than first and second
The centre frequency of intermediate-freuqncy signal；And one data signal produce circuit 130, comprising first, second with the 3rd data signal generation
Path 132,134,136, for producing first, second and the 3rd data signal.First data signal produces path 132 and uses
To be processed with bandwidth and a first sampling frequency according to the centre frequency of the first intermediate-freuqncy signal the homophase of the mixed frequency signal
（In-Phase）Part and orthorhombic phase（Quadrature-Phase）At least one partial, to produce one first numeral letter
Number；Second data signal produces path 134 and is used for according to the centre frequency and bandwidth and one second of the second intermediate-freuqncy signal
Sampling frequency come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, it is digital to produce one second
Signal；3rd data signal produces path 136 and is used for centre frequency according to the 3rd intermediate-freuqncy signal and bandwidth and one the
Three sampling frequencies come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one the 3rd number
Word signal, wherein the 3rd sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal, in other words, the 3rd sampling frequency
Less than two times of the peak frequency of those intermediate-freuqncy signals, efficiency and power consumption requirements are thereby reduced.Additionally, the present embodiment is further wrapped
Containing a frequency shift circuit 140, for being moved when arbitrary foregoing digital signals are located at a negative image frequency or a high image frequency
Frequently, that is, according at least one treat shift frequency data signal produce at least one frequency-shift signaling, if however, those data signals without
Shift frequency demand, frequency shift circuit 140 is i.e. inessential.The present embodiment can separately include a baseband circuit（Do not show）Or the base independent with
Frequency circuit cooperating syringe, the baseband circuit can be according to the frequency of aforementioned first data signal or its frequency-shift signaling, second digital
The frequency of the frequency and the 3rd data signal or its frequency-shift signaling of signal or its frequency-shift signaling come process those data signals and/
Or frequency-shift signaling.
From the above, in the present embodiment, the 3rd sampling frequency is more than or equal to first and second sampling frequency, therefore numeral
The highest sampling frequency of signal generating circuit 130（That is the 3rd sampling frequency）It is less than the highest frequency of those intermediate-freuqncy signals
（That is, the 3rd intermediate-freuqncy signal highest frequency）Two times, thereby reduce the demand of circuit performance and power consumption, wherein those samplings
Frequency can be equal or unequal, holds depending on the demand of present inventor is implemented.Further, since during the 3rd sampling frequency is less than the 3rd
Two times of the highest frequency of frequency signal, the sampling result of the 3rd intermediate-freuqncy signal（That is the 3rd data signal）Aliasing can be produced
（Aliasing）, that is, the sampling result appears in the image frequency of the 3rd intermediate-freuqncy signal（That is, (± kfs ± fa), wherein k
For positive integer）On, on the non-primary frequency for occurring in the 3rd intermediate-freuqncy signal, and the present invention be carried out using this aliasing phenomenon it is humorous
Ripple is sampled（Harmonic Sampling）.More explanations with regard to aliasing can be obtained by books or disclosed document.
From the above, for example, as shown in Figure 2, it is assumed that this first, second and the 3rd wireless signal be sequentially Beidou
Signal, gps signal and Glonass signals, the frequency of local oscillating frequency is 1558MHz, known mixed through being suitably selected
Frequency framework, the mixting circuit 120 of Fig. 1 can produce the first intermediate frequency that centre frequency is (1561.098-1558)=3.098MHz to be believed
Number（IF1）, centre frequency for (1575.42-1558)=17.42MHz the second intermediate-freuqncy signal（IF2）And centre frequency is
(1602-1558) the 3rd intermediate-freuqncy signal of=44MHz（IF3）, now, first, second with the 3rd intermediate-freuqncy signal respectively corresponding
First, second and the 3rd wireless signal, and if aforementioned first, second and the 3rd sampling frequency be all 32.736MHz, due to the sampling
Highest frequency of the frequency more than the first intermediate-freuqncy signal（That is (3.098+4.092/2)=5.144MHz）Two times, but less than second
The highest frequency of intermediate-freuqncy signal（That is (17.42+2.046/2)=18.443MHz）With the highest frequency of the 3rd intermediate-freuqncy signal（I.e.
(44+9.3/2)=48.65MHz）Two times, therefore first, second and the 3rd intermediate-freuqncy signal preferable sampling result（That is, the
First, second and the 3rd data signal D1, D2, D3）Primary frequency 3.098MHz, image frequency ± (32.736- can sequentially be occurred in
17.42) on=± 15.316MHz and image frequency ± (32.736-44)=± 11.264MHz, due to above-mentioned second and/
Or the 3rd data signal be likely located at a negative frequency or in the positive frequency of higher-frequency, the frequency shift circuit 140 of Fig. 1 can be to second
And/or the 3rd data signal carry out shift frequency to produce the frequency-shift signaling positioned at appropriate positive frequency, the centre frequency of the frequency-shift signaling
Can design to determine from known shift frequency depending on its demand by present inventor is implemented.In note that above-mentioned example, due to wireless communication
Number species, the frequency of local oscillating frequency, the frequency of sampling frequency and sampling result etc. can in advance learn, set and push away
By, therefore, if positioned at negative frequency second and/or the 3rd data signal be used, and in order to frequency shift circuit 140 can be aligned
Shift frequency is carried out in the signal of negative frequency, the second data signal produces the data signal of path 134 and/or the 3rd generation path 136 and needs
Design process the homophase of the mixed frequency signal and orthorhombic phase part with produce this second and/or the 3rd data signal；Since and the
Without the need for shift frequency, the first data signal produces path 132 and only needs to process homophase or the orthorhombic phase portion of the mixed frequency signal one data signal
Point.
Again for example, as shown in Figure 3, it is assumed that this first, second and the 3rd wireless signal sequentially still for Beidou signals,
Gps signal and Glonass signals, the frequency of local oscillating frequency is 1607MHz, passes through and is suitably selected known mixing frame
Structure, the mixting circuit 120 of Fig. 1 can produce the first intermediate-freuqncy signal that centre frequency is (1607-1602)=5MHz（IF1）, center
Frequency is second intermediate-freuqncy signal of (1607-1575.42)=31.58MHz（IF2）And centre frequency is (1607-
1561.098) the 3rd intermediate-freuqncy signal of=45.902MHz（IF3）, now, first, second is corresponding respectively with the 3rd intermediate-freuqncy signal
Three, the second and first wireless signal, if first, second and the 3rd sampling frequency be still 32.736MHz, due to the sampling frequency
More than the highest frequency of the first intermediate-freuqncy signal（That is (5+9.3/2)=9.65MHz）Two times, but less than second and the 3rd intermediate frequency
The highest frequency of signal（That is (31.58+2.046/2)=32.603MHz and (44+4.092/2)=47.948MHz）Two
Times, thus first, second and the 3rd intermediate-freuqncy signal preferable sampling result（That is, first, second and the 3rd data signal D1,
D2、D3）Can respectively appear under rational sampling bandwidth primary frequency 5MHz, image frequency ± (32.736-31.58)=±
On one of 1.156MHz and image frequency ± (32.736-45.902)=± 13.184MHz, according to positioned at negative frequency
The data signal of rate or high frequency, the frequency shift circuit 140 of Fig. 1 can carry out shift frequency to the data signal to produce positioned at appropriate positive frequency
Frequency-shift signaling, similarly, the centre frequency of the frequency-shift signaling can select known shift frequency by implementing present inventor and regard its demand
Design to determine.In above-mentioned example, if it is intended to using the signal positioned at negative frequency, and in order to make frequency shift circuit 140 negative to this
The signal of frequency carries out shift frequency, and the second data signal produces the data signal of path 134 and/or the 3rd generation path 136 and should process
The homophase of the mixed frequency signal and orthorhombic phase part, as the first data signal produce path 132 only need to process the mixed frequency signal it
Homophase or orthorhombic phase part.
According to above-mentioned, whether the sampling result of the present embodiment needs to carry out shift frequency can be summarized as follows：If the first intermediate-freuqncy signal it
Highest frequency is less than two times of first sampling frequency, and the frequency of the first data signal is negative or higher than a default value, shift frequency electricity
Road 140 produces one first frequency-shift signaling according to first data signal；If the highest frequency of the second intermediate-freuqncy signal is less than second
Two times of sampling frequency, and the frequency of the second data signal be it is negative or higher than the default value, frequency shift circuit 140 i.e. according to this second
Data signal produces one second frequency-shift signaling；If the highest frequency of the 3rd intermediate-freuqncy signal is less than two times of the 3rd sampling frequency, and
The frequency of the 3rd data signal is negative or higher than the default value, and frequency shift circuit 140 produces one the according to the 3rd data signal
Three frequency-shift signalings.The default value can be by the art personage according to enforcement demand（The efficiency of such as baseband circuit）To determine.
Note that aforementioned local oscillating frequency frequency and first, second and the 3rd sampling frequency numerical value be for this
Field personage understands the present invention and is used, and is not used to limit the present invention.In the consideration of different efficiency, cost and design requirement
Under, one skilled in the art can select the frequency of other local oscillating frequencies（It can depending on the frequency of wireless signal,
Such as frequency of oscillation is less than the minimum frequency of plural wireless signal, the peak frequency more than the plural wireless signal or between this
Between the frequency of wantonly two adjacent signals of a little wireless signals etc.）, and other sampling frequencies can be selected.In addition, aforementioned mixed to produce
The in-phase component of frequency signal and orthorhombic phase part, the frequency mixer 120 of Fig. 1 can be single comprising one first mixing unit and one second mixing
Unit（Do not show）, be respectively intended to according to phase place for 0 degree and 90 degree local oscillating frequency come produce the in-phase component with it is orthogonal
Phase part, if but only homophase or orthorhombic phase part are necessity, frequency mixer 120 also can only produce the homophase or orthorhombic phase part,
Because this part and its enforcement change belong to known technology, this specification will not be in detail illustrated it.Furthermore, the reception electricity of Fig. 1
Road 110 comprising an at least antenna or with an at least stand-alone antenna cooperating syringe to receive the wireless signal, and be able to can include at least
One amplifying circuit produces the reception signal to amplify the wireless signal, similarly, because this partly belongs to known technology, enters one
The explanation here of step gives memorandum.
Fig. 4 is referred to, it is the schematic diagram that the data signal of Fig. 1 produces one of circuit 130 embodiment.As shown in figure 4, the
One data signal produces path 132 and includes：One first wave filter 412, for according to the centre frequency and band of the first intermediate-freuqncy signal
Width come process the in-phase component of mixed frequency signal and orthorhombic phase part at least one, and produce one first filtering letter according to this
Number, more precisely, the first intermediate-freuqncy signal can be leached via the first wave filter 412；One first gain controller 414, is used for
One first gain process signal is produced according to first filtering signal；And one first analog-to-digital converter 416, for according to
The first gain process signal is converted to into the first data signal according to aforementioned first sampling frequency.Second data signal produces path
134 include：One second wave filter 422, for processing mixed frequency signal with bandwidth according to the centre frequency of the second intermediate-freuqncy signal
At least one of in-phase component and orthorhombic phase part, and one second filtering signal is produced according to this, more precisely, in second
Frequency signal can be leached via the second wave filter 422；One second gain controller 424, for producing according to second filtering signal
Raw one second gain process signal；And one second analog-to-digital converter 426, for will according to aforementioned second sampling frequency
The second gain process signal is converted to the second data signal.3rd data signal produces path 136 and includes：One the 3rd wave filter
432, for processing in-phase component and the orthorhombic phase part of mixed frequency signal with bandwidth according to the centre frequency of the 3rd intermediate-freuqncy signal
At least one, and according to this produce one the 3rd filtering signal, more precisely, the 3rd intermediate-freuqncy signal can via the 3rd filtering
Device 432 and leach；One the 3rd gain controller 434, for producing one the 3rd gain process signal according to the 3rd filtering signal；
And one the 3rd analog-to-digital converter 436, the 3rd gain process signal is converted to according to aforementioned 3rd sampling frequency
3rd data signal.Aforementioned first, second and the 3rd wave filter 412,422,432 can according to implement demand be selected from existing wave filter
（Such as composite filter（Complex Filter）Or bandpass filter）, and first, second and the 3rd gain controller 414,
424th, 434 equally existing gain controller can be selected from according to demand is implemented（Such as programmable gain amplifier or automatic gain
Controller etc.）.
In addition, the wireless signal receiver 100 of Fig. 1 can further include：One control circuit（Do not show）, coupling numeral
Signal generating circuit 130, for according to one it is pre-conditioned close first, second with the 3rd data signal generation path 132,134,
136 at least one of at least a portion, thereby saves power consumption.Certainly, this control circuit can further couple shift frequency electricity
Road 140, according to one of the pre-conditioned closing frequency shift circuit 140 portion or whole, thereby to save more power consumptions.Citing comes
Say, it is assumed that first, second with the 3rd data signal produce path 132,134,136 be respectively intended to produce corresponding Beidou signals,
First, second and the 3rd data signal of gps signal and Glonass signals, if user is only intended to be carried out using Beidou signals
Positioning, then control circuit can be according to the implied terms（For example based on efficiency and the condition ordered by power consumption consideration）Come close second with
3rd data signal produces the partial circuit in path 134,136（Such as second and the 3rd analog-to-digital converter 426,436）
Or whole circuits, and if the first data signal produces the first produced data signal of path 132 without shift frequency demand, control circuit
Can be according further to one of the pre-conditioned closing frequency shift circuit 140 portion or whole, to avoid unnecessary power wastage.By
The control circuit can be realized in one skilled in the art using software and hardware according to the disclosure of this specification（Such as one
On-off circuit）, therefore on the premise of exploitativeness and disclosure requirement is not affected, the explanation of redundancy will give memorandum.
Fig. 5 is referred to, it is the schematic diagram of another embodiment of wireless signal receiver of the present invention, the present embodiment and figure
The framework that main difference is that data signal generation circuit of 1 embodiment, therefore follow-up explanation will focus on the embodiment of Fig. 1 not
The part for referring to, same or similar part, therefore will be by moderately memorandum because being understood by front taking off explanation acquisition and fill part.Such as Fig. 5
Shown, wireless signal receiver 500 is included：One receiving circuit 510, connects for receiving a wireless signal, and producing one according to this
The collection of letters number, the wherein wireless signal include one first wireless signal（Such as Beidou or Glonass signals）, one second wireless communication
Number（Such as gps signal or Galileo signals）And one the 3rd wireless signal（Such as Glonass or Beidou signals）, and should
First, second is different from the centre frequency of the 3rd wireless signal；One mixting circuit 520, for according to an at least local oscillations
, to produce a mixed frequency signal, wherein the mixed frequency signal is comprising in one first intermediate-freuqncy signal, one second for the frequency processing reception signal
Frequency signal and one the 3rd intermediate-freuqncy signal, and the centre frequency of the 3rd intermediate-freuqncy signal for this first, second with the 3rd intermediate frequency believe
Number centre frequency in the maximum or reckling；And one data signal produce circuit 530, comprising double-mold data signal produce
The single mode of circuit 532 and a numeral signal generating circuit 534, the bimodule digital signal generating circuit 532 be used for according to this first with
The centre frequency of the second intermediate-freuqncy signal process with bandwidth and a first sampling frequency in-phase component of the mixed frequency signal with just
Hand over phase part at least one, with produce one first data signal simultaneously to should first and second intermediate-freuqncy signal, it is and single
Modulus word signal generating circuit 534 is then used for according to the centre frequency and bandwidth and one second sampling frequency of the 3rd intermediate-freuqncy signal
Rate come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one second data signal pair
Should the 3rd intermediate-freuqncy signal, if wherein the centre frequency of the 3rd intermediate-freuqncy signal be first, second and the 3rd intermediate-freuqncy signal center
The maximum in frequency, the second sampling frequency would be limited to two times of the highest frequency less than the 3rd intermediate-freuqncy signal, if in the 3rd
The centre frequency of frequency signal be first, second with the 3rd intermediate-freuqncy signal centre frequency in reckling, first sampling frequency will limit
Two times of the highest frequency less than first and second intermediate-freuqncy signal are formed on, in short, data signal produces the maximum of circuit 530
Sampling frequency thereby saves efficiency and power consumption demand by less than two times of the highest frequency of those intermediate-freuqncy signals.Similar Fig. 1 is real
Example is applied, the present embodiment further includes a frequency shift circuit 540, for being located at a negative image frequency in the arbitrary of foregoing digital signals
Or shift frequency is carried out during a high image frequency, to treat that the data signal of shift frequency produces an at least frequency-shift signaling according at least one, however,
If those data signals are without shift frequency demand, frequency shift circuit 540 is i.e. inessential.In addition, the present embodiment can further include or arrange in pairs or groups
One baseband circuit（Do not show）, the baseband circuit can be according to aforementioned first data signal or the frequency and of its frequency-shift signaling
The frequency of two digital signal or its frequency-shift signaling come process first data signal or its frequency-shift signaling and this second numeral letter
Number or its frequency-shift signaling.
From the above, as shown in Figure 6, it is assumed that first, second and the 3rd wireless signal be sequentially Beidou signals, GPS letter
Number with Glonass signals, the frequency of local oscillating frequency is 1564MHz between first and second radio signal frequency, thoroughly
Cross and be suitably selected known mixing framework, the mixting circuit 520 of Fig. 5 can produce centre frequency for (1561.098-1564)
First intermediate-freuqncy signal of=- 2.902MHz（IF1）, centre frequency for (1575.42-1564)=11.42MHz the second intermediate frequency
Signal（IF2）And centre frequency is the 3rd intermediate-freuqncy signal of (1602-1564)=38MHz（IF3）If, aforementioned first and
Two sampling frequencies are all 26MHz, because the sampling frequency is more than the peak frequency absolute value of first and second intermediate-freuqncy signal（I.e.
| -2.902-4.092/2 |=4.948MHz and (11.42+2.046/2)=12.443MHz）Two times, but less than the 3rd in
The highest frequency of frequency signal（That is (38+9.3/2)=42.65MHz）Two times, therefore first, second and the 3rd intermediate-freuqncy signal it
Preferable sampling result（That is, first and second data signal D1, D2）It is former frequency to be respectively appeared under rational sampling bandwidth
Frequency -2.902MHz（Bandwidth 4.092MHz）, primary frequency 11.42MHz（Bandwidth 2.046MHz）And image frequency ± (26-
43.15) one of=± 17.15MHz（Bandwidth 9.3MHz）On, based on the first data signal have part be located at negative frequency on
And second the frequency of data signal may be negative or higher than a default value, the frequency shift circuit 540 of Fig. 5 can be to first and second numeral
Signal carries out shift frequency to produce first and second frequency-shift signaling positioned at appropriate positive frequency, the default value and frequency-shift signaling respectively
Centre frequency can by implement present inventor determine depending on its demand.It is to process the letter for being located at negative frequency in note that above-mentioned example
Number, bimodulus comes with single mode numeral signal generating circuit 532,534 by the homophase and orthorhombic phase part that process the mixed frequency signal
Produce first and second data signal；But if the second data signal only needs to be located at the signal of positive frequency, single mode data signal is produced
Circuit 534 processes the homophase of the mixed frequency signal or orthorhombic phase part.
Again for example, as shown in Figure 7, it is assumed that first, second and the 3rd wireless signal sequentially still for Beidou signals,
Gps signal and Glonass signals, the frequency of local oscillating frequency is between radio signal frequency between second and the 3rd
1588.71MHz, through known mixing framework is suitably selected, the mixting circuit 520 of Fig. 5 can produce centre frequency and be
(1588.71-1561.098) first intermediate-freuqncy signal of=27.612MHz（IF1）, centre frequency be (1588.71-
1575.42) second intermediate-freuqncy signal of=13.29MHz（IF2）And centre frequency be (1588.71-1602)=-
3rd intermediate-freuqncy signal of 13.29MHz（IF3）If aforementioned first and second sampling frequency is all 32.736MHz, first, second with
The preferable sampling result of the 3rd intermediate-freuqncy signal（That is, first and second data signal D1, D2）Can sequentially occur in image frequency ±
(32.736-27.612)=± 5.124MHz（Bandwidth 4.092MHz）, primary frequency 13.29MHz（Bandwidth 2.046MHz）And it is former
On frequency -13.29MHz（Bandwidth 9.3MHz）, the consideration due to sampling bandwidth, the preferable sampling result of the first intermediate-freuqncy signal should
For the signal of 5.124MHz, therefore only the second data signal can be located at negative frequency, and need to be by the frequency shift circuit 540 of Fig. 5
Shift frequency is carried out, likewise, the centre frequency of the frequency-shift signaling can regard its demand from known shift frequency electricity by present inventor is implemented
Road is determining.In note that above-mentioned example, bimodule digital signal generating circuit 532 only need process the mixed frequency signal homophase or
Orthorhombic phase part, but single mode numeral signal generating circuit 534 is because being related to negative frequency signal, therefore still need to process the homophase and orthorhombic phase portion
Point.
According to above-mentioned, whether the sampling result of the present embodiment needs to carry out shift frequency can be summarized as follows：If first and second intermediate frequency
The highest frequency of signal is less than two times of the first sampling frequency, and the frequency of the first data signal to bear or giving tacit consent to higher than one
Value, frequency shift circuit 540 produces one first frequency-shift signaling according to first data signal；If the highest frequency of the 3rd intermediate-freuqncy signal
Less than two times of second sampling frequency, and the frequency of the second data signal be it is negative or higher than the default value, frequency shift circuit 540 according to
One second frequency-shift signaling is produced according to second data signal.The default value can be determined by the art personage according to enforcement demand
It is fixed.
Fig. 8 is referred to, it is the schematic diagram that the data signal of Fig. 5 produces one of circuit 530 embodiment.As illustrated, double
Mould data signal produces path 532 and includes：One first wave filter 812（A such as low pass filter）, for according to this first with
The centre frequency of the second intermediate-freuqncy signal processes the in-phase component of the mixed frequency signal with bandwidth with orthorhombic phase part at least within
One of, and one first filtering signal is produced according to this, more precisely, first and second intermediate-freuqncy signal can be via the first wave filter
812 and leach；One first gain controller 814, for producing one first gain process signal according to first filtering signal；With
And one first analog-to-digital converter 816, for the first gain process signal is converted to according to the first sampling frequency
First data signal.Single mode data signal produces path 534 and includes：One second wave filter 822（A such as composite filter）,
For processing in-phase component and the orthorhombic phase part of the mixed frequency signal according to the centre frequency of the 3rd intermediate-freuqncy signal and bandwidth
At least one, and according to this produce one second filtering signal, more precisely, the 3rd intermediate-freuqncy signal can via second filtering
Device 822 and leach；One second gain controller 824, for producing one second gain process signal according to second filtering signal；
And one second analog-to-digital converter 826, for according to second sampling frequency by the second gain process signal conversion
For second data signal.
In addition, the embodiment of Fig. 5 equally can be included：One control circuit（Do not show）, couple the data signal and produce circuit
530, for producing at least one of of path 532,534 according to pre-conditioned first and second data signal of closing
At least partially.The control circuit can further couple the frequency shift circuit 540, with according to the pre-conditioned closing frequency shift circuit
One of 540 portions or whole.
Except device invention described above it is outer, it is of the invention also to disclose a kind of radio signal receiving method, can receive to
The signal of few three kinds of centre frequency differences.As shown in figure 9, one of the method embodiment is comprised the steps of：
Step910：A wireless signal is received, and produces one according to this and receive signal, the wherein wireless signal includes one first
Wireless signal（Such as Beidou signals）, a second wireless singal（Such as gps signal or Galileo signals）And one the 3rd nothing
Line signal（Such as Glonass signals）, and this is first, second different from the centre frequency of the 3rd wireless signal.This step can
Perform by the receiving circuit 110 or its equivalent circuit of Fig. 1；
Step920：The reception signal is processed to produce a mixed frequency signal, wherein this is mixed according to an at least local oscillating frequency
Frequency signal includes one first intermediate-freuqncy signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, and this is in first, second and the 3rd
Frequency signal sequentially to should first, second and the 3rd wireless signal or sequentially to should the three, the second and first wireless signal, and
Centre frequency of the centre frequency of the 3rd intermediate-freuqncy signal more than first and second intermediate-freuqncy signal.This step can by Fig. 1 it
Mixting circuit 120 or its equivalent circuit are performing；
Step930：This is processed according to the centre frequency of first intermediate-freuqncy signal with bandwidth and a first sampling frequency
At least one of the in-phase component of mixed frequency signal and orthorhombic phase part, to produce one first data signal.This step can mat
Produce path 132 or its equivalent circuit to perform by first data signal of Fig. 1；
Step940：This is processed according to the centre frequency of second intermediate-freuqncy signal with bandwidth and one second sampling frequency
At least one of the in-phase component of mixed frequency signal and orthorhombic phase part, to produce one second data signal.This step can mat
Produce path 134 or its equivalent circuit to perform by second data signal of Fig. 1；And
Step950：This is processed according to the centre frequency of the 3rd intermediate-freuqncy signal with bandwidth and one the 3rd sampling frequency
At least one of the in-phase component of mixed frequency signal and orthorhombic phase part, to produce one the 3rd data signal, the wherein the 3rd
Sampling frequency thereby reduces efficiency and power consumption requirements less than two times of the highest frequency of the 3rd intermediate-freuqncy signal.This step can mat
Produce path 136 or its equivalent circuit to perform by the 3rd data signal of Fig. 1.
Due to the art, tool usually intellectual can understand this method by the embodiment of Fig. 1 and its related description
The details of invention includes relation of shift frequency, the frequency of local oscillating frequency, sampling frequency and sampling result of signal etc. with change,
Therefore in the exploitativeness for not affecting the present embodiment and fill on the premise of part discloses, the explanation of repetition will give memorandum.
Additionally, as shown in Figure 10, another embodiment of the radio signal receiving method of the present invention is included：Step1010：Connect
A wireless signal is received, and produces one according to this and receive signal, the wherein wireless signal includes one first wireless signal（Such as Beidou
Signal）, a second wireless singal（Such as gps signal or Galileo signals）And one the 3rd wireless signal（Such as Glonass
Signal）, and this is first, second different from the centre frequency of the 3rd wireless signal.This step can be by the receiving circuit of Fig. 5
510 or its equivalent circuit performing；
Step1020：The reception signal is processed to produce a mixed frequency signal, wherein should according to an at least local oscillating frequency
Mixed frequency signal includes one first intermediate-freuqncy signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, and the 3rd intermediate-freuqncy signal
Centre frequency for this first, second and the 3rd intermediate-freuqncy signal centre frequency in the maximum or reckling.This step can be by
The mixting circuit 520 or its equivalent circuit of Fig. 5 is performing；
Step1030：Come according to the centre frequency and bandwidth and a first sampling frequency of first and second intermediate-freuqncy signal
Process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one first data signal.This step
Suddenly can perform by the bimodule digital signal generating circuit 532 of Fig. 5 or its equivalent circuit；And
Step1040：This is processed according to the centre frequency of the 3rd intermediate-freuqncy signal with bandwidth and one second sampling frequency
At least one of the in-phase component of mixed frequency signal and orthorhombic phase part, to produce one second data signal.This step can mat
Performed by the single mode numeral signal generating circuit 534 or its equivalent circuit of Fig. 5.If the centre frequency of above-mentioned 3rd intermediate-freuqncy signal
For this first, second and the 3rd intermediate-freuqncy signal centre frequency in the maximum, second sampling frequency less than the 3rd intermediate frequency believe
Number two times of highest frequency；If the centre frequency of the 3rd intermediate-freuqncy signal this first, second and the 3rd among intermediate-freuqncy signal
Reckling in frequency of heart, the first sampling frequency is thereby kept away less than two times of the highest frequency of first and second intermediate-freuqncy signal
Exempt from the waste of efficiency and power consumption.
Similarly, because the art tool usually intellectual can come by the embodiment of Fig. 5 and its related description
The details of solution present method invention and shift frequency of the change comprising signal, the frequency of local oscillating frequency, sampling frequency and sampling result
Relation etc., therefore in the exploitativeness for not affecting the present embodiment and fill on the premise of part discloses, the explanation of repetition will be saved
Slightly.
Take off before note that in icon, order of the shape of component, size, ratio and step etc. is only illustrated, supply
Technical field tool usually intellectual understands the present invention and is used, and is not used to limit the present invention.Furthermore, the art personage Ke Yi
The disclosure content of the present invention and the demand of itself optionally implement the part or all of technical characteristic of any embodiment, Huo Zhexuan
Implement to selecting property the combination of the part or all of technical characteristic of a plurality of embodiments, thereby increase the elasticity when present invention is implemented.
In sum, the wireless signal receiver of the present invention includes at least following advantages with method：First, using list
One local oscillating frequency carrys out the wireless signal of frequency reducing at least three kinds of centre frequency differences, so as to cost-effective；Second, using compared with
Low sampling frequency is changed to be simulated to numeral, thereby reduces the performance and power consumption requirements of circuit, in other words, present invention profit
Harmonic wave Sampling is reached with the aliasing signal that should be filtered originally, to balance efficiency and cost；Third, can be closed using control circuit
Unused circuit is closed, further to save power consumption.
Although embodiments of the present invention as described above, but those embodiments be not used for limiting the present invention, this technology neck
Domain tool usually intellectual can impose change to the technical characteristic of the present invention according to the content expressed or imply of the present invention, it is all this
Many variations may belong to the sought patent protection category of the present invention, and in other words, the scope of patent protection of the present invention must be regarded
The claims person of defining of this specification is defined.
Symbol description
100 wireless signal receivers
110 receiving circuits
120 mixting circuits
130 data signals produce circuit
132 first data signals produce path
134 second data signals produce path
136 the 3rd data signals produce path
140 frequency shift circuits
412 first wave filters
414 first gain control circuits
416 first analog-to-digital converters
422 second wave filters
424 second gain control circuits
426 second analog-to-digital converters
432 the 3rd wave filters
434 the 3rd gain control circuits
436 the 3rd analog-to-digital converters
500 wireless signal receivers
510 receiving circuits
520 mixting circuits
530 data signals produce circuit
532 bimodule digital signal generating circuits
534 single modes numeral signal generating circuit
540 frequency shift circuits
812 first wave filters
814 first gain control circuits
816 first analog-to-digital converters
822 second wave filters
824 second gain control circuits
826 second analog-to-digital converters
S910 receives a wireless signal, and produces a reception signal according to this
S920 processes the reception signal according to a local oscillating frequency to be believed with producing a mixed frequency signal comprising one first intermediate frequency
Number, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, wherein the centre frequency of the 3rd intermediate-freuqncy signal more than this first with
The centre frequency of the second intermediate-freuqncy signal
S930 processes the mixing according to the centre frequency of first intermediate-freuqncy signal with bandwidth and a first sampling frequency
At least one of the in-phase component of signal and orthorhombic phase part, to produce one first data signal
S940 processes the mixing according to the centre frequency of second intermediate-freuqncy signal with bandwidth and one second sampling frequency
At least one of the in-phase component of signal and orthorhombic phase part, to produce one second data signal
S950 processes the mixing according to the centre frequency of the 3rd intermediate-freuqncy signal with bandwidth and one the 3rd sampling frequency
At least one of the in-phase component of signal and orthorhombic phase part, to produce one the 3rd data signal, the wherein the 3rd sampling
Frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal
S1010 receives a wireless signal, and produces a reception signal according to this
S1020 processes the reception signal to produce a mixed frequency signal comprising one first intermediate frequency according to a local oscillating frequency
Signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal
S1030 locates according to the centre frequency of first and second intermediate-freuqncy signal with bandwidth and a first sampling frequency
Manage the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one first data signal
S1040 processes this with bandwidth and one second sampling frequency according to the centre frequency of the 3rd intermediate-freuqncy signal and mixes
At least one of the in-phase component of frequency signal and orthorhombic phase part, to produce one second data signal.If the 3rd intermediate frequency
The centre frequency highest of signal, second sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal, if the 3rd
The centre frequency of intermediate-freuqncy signal is minimum, and the first sampling frequency is less than the two of the highest frequency of first and second intermediate-freuqncy signal
Times.
Claims (12)
1. a kind of wireless signal receiver, can receive the signal of at least three kinds of centre frequency differences, comprising：
One receiving circuit, for receiving a wireless signal, and produces according to this one and receives signal, and wherein the wireless signal includes one the
One wireless signal, a second wireless singal and one the 3rd wireless signal, and this first, second and the 3rd wireless signal center
Frequency is different；
One mixting circuit, for processing the reception signal to produce a mixed frequency signal according to an at least local oscillating frequency, wherein
The mixed frequency signal includes one first intermediate-freuqncy signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, and this first, second and the
Three intermediate-freuqncy signals sequentially to should first, second with the 3rd wireless signal or sequentially corresponding three, the second and first wireless signal,
And the 3rd intermediate-freuqncy signal highest frequency more than first and second intermediate-freuqncy signal highest frequency；
One data signal produces circuit, comprising：
One first data signal produces path, for taking with bandwidth and one first according to the centre frequency of first intermediate-freuqncy signal
Sample frequency come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one first numeral letter
Number；
One second data signal produces path, for taking with bandwidth and one second according to the centre frequency of second intermediate-freuqncy signal
Sample frequency come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one second numeral letter
Number；And
One the 3rd data signal produces path, for taking with bandwidth and one the 3rd according to the centre frequency of the 3rd intermediate-freuqncy signal
Sample frequency come process the in-phase component of the mixed frequency signal and orthorhombic phase part at least one, to produce one the 3rd numeral letter
Number, wherein the 3rd sampling frequency is less than two times of the highest frequency of the 3rd intermediate-freuqncy signal；And
One frequency shift circuit, for according to this first, second and the 3rd data signal at least one produce at least shift frequency
Signal, wherein
If the highest frequency of first intermediate-freuqncy signal is less than two times of the first sampling frequency, and the frequency of first data signal
For negative or higher than a default value, the frequency shift circuit produces one first frequency-shift signaling according to first data signal；If this is in second
The highest frequency of frequency signal is less than two times of second sampling frequency, and the frequency of second data signal to bear or writing from memory higher than this
Recognize value, the frequency shift circuit produces one second frequency-shift signaling according to second data signal；If the most high frequency of the 3rd intermediate-freuqncy signal
Rate is less than two times of the 3rd sampling frequency, and the frequency of the 3rd data signal is negative or higher than the default value, shift frequency electricity
Road produces one the 3rd frequency-shift signaling according to the 3rd data signal.
2. wireless signal receiver as claimed in claim 1, wherein this is first, second equal with the 3rd sampling frequency.
3. wireless signal receiver as claimed in claim 1, wherein this first, second with a two-phase of the 3rd wireless signal
The interval of the centre frequency of adjacent wireless signal is different.
4. the wireless signal receiver as described in claim 1 or 3, wherein this first, second and the 3rd wireless signal band
It is wide different.
5. wireless signal receiver as claimed in claim 1, wherein this first, second and the 3rd wireless signal be satellite
Position signal.
6. wireless signal receiver as claimed in claim 1, wherein first data signal produces path and includes：
One first wave filter, for processing the homophase of the mixed frequency signal according to the centre frequency of first intermediate-freuqncy signal and bandwidth
Part with orthorhombic phase part at least one, and according to this produce one first filtering signal；
One first gain controller, for producing one first gain process signal according to first filtering signal；And
One first analog-to-digital converter, for the first gain process signal is converted to into this according to the first sampling frequency
First data signal；
Second data signal produces path and includes：
One second wave filter, for processing the homophase of the mixed frequency signal according to the centre frequency of second intermediate-freuqncy signal and bandwidth
Part with orthorhombic phase part at least one, and according to this produce one second filtering signal；
One second gain controller, for producing one second gain process signal according to second filtering signal；And
One second analog-to-digital converter, for the second gain process signal is converted to into this according to second sampling frequency
Second data signal；And
3rd data signal produces path and includes：
One the 3rd wave filter, for processing the homophase of the mixed frequency signal according to the centre frequency of the 3rd intermediate-freuqncy signal and bandwidth
Part with orthorhombic phase part at least one, and according to this produce one the 3rd filtering signal；
One the 3rd gain controller, for producing one the 3rd gain process signal according to the 3rd filtering signal；And
One the 3rd analog-to-digital converter, the 3rd is converted to according to the 3rd sampling frequency by the 3rd gain process signal
Data signal.
7. wireless signal receiver as claimed in claim 1, a wherein at least local oscillating frequency is a single-frequency,
Its frequency less than this first, second and the 3rd wireless signal minimum frequency or more than this first, second and the 3rd wireless signal
Peak frequency.
8. wireless signal receiver as claimed in claim 1, further includes：
One control circuit, couples the data signal and produces circuit, for according to one it is pre-conditioned close this first, second and the 3rd
Data signal produces at least one of at least a portion in path.
9. wireless signal receiver as claimed in claim 8, wherein control circuit couples the frequency shift circuit, with according to should
One of the pre-conditioned closing frequency shift circuit portion or whole.
10. a kind of radio signal receiving method, can receive the signal of at least three kinds of centre frequency differences, comprise the steps of：
Receive a wireless signal, and produce one according to this and receive signal, wherein the wireless signal comprising one first wireless signal, one the
Two wireless signals and one the 3rd wireless signal, and this is first, second different from the centre frequency of the 3rd wireless signal；
The reception signal is processed to produce a mixed frequency signal, wherein the mixed frequency signal includes one according to an at least local oscillating frequency
First intermediate-freuqncy signal, one second intermediate-freuqncy signal and one the 3rd intermediate-freuqncy signal, this is first, second sequentially right with the 3rd intermediate-freuqncy signal
Should first, second and the 3rd wireless signal or sequentially to should the three, the second and first wireless signal, and the 3rd intermediate frequency believes
Number centre frequency more than first and second intermediate-freuqncy signal centre frequency；
The same of the mixed frequency signal is processed with bandwidth and a first sampling frequency according to the centre frequency of first intermediate-freuqncy signal
Mutually at least one of part and orthorhombic phase part, to produce one first data signal；
The same of the mixed frequency signal is processed according to the centre frequency of second intermediate-freuqncy signal with bandwidth and one second sampling frequency
Mutually at least one of part and orthorhombic phase part, to produce one second data signal；
The same of the mixed frequency signal is processed according to the centre frequency of the 3rd intermediate-freuqncy signal with bandwidth and one the 3rd sampling frequency
Mutually at least one of part and orthorhombic phase part, to produce one the 3rd data signal, wherein the 3rd sampling frequency is less than
Two times of the highest frequency of the 3rd intermediate-freuqncy signal；And
To this first, second and the 3rd at least one of data signal carry out shift frequency to produce an at least frequency-shift signaling,
If wherein the highest frequency of first intermediate-freuqncy signal is less than two times of the first sampling frequency, and first data signal it
Frequency is negative or higher than a default value, and the step for producing the frequency-shift signaling produces one first shift frequency letter according to first data signal
Number；If the highest frequency of second intermediate-freuqncy signal is less than two times of second sampling frequency, and the frequency of second data signal
To bear or higher than the default value, producing the step of the frequency-shift signaling according to second data signal, one second frequency-shift signaling of generation；
If the highest frequency of the 3rd intermediate-freuqncy signal is less than two times of the 3rd sampling frequency, and the frequency of the 3rd data signal is negative
Or higher than the default value, the step for producing the frequency-shift signaling produces one the 3rd frequency-shift signaling according to the 3rd data signal.
11. radio signal receiving methods as claimed in claim 10, wherein an at least local oscillating frequency are a single frequency
Rate, its frequency less than this first, second and the 3rd wireless signal minimum frequency or more than this first, second and the 3rd wireless communication
Number peak frequency.
12. radio signal receiving methods as claimed in claim 10, wherein this first, second and the 3rd wireless signal wantonly two
The interval of the centre frequency of adjacent radio signals is different, and this is first, second different from the bandwidth of the 3rd wireless signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222431.6A CN106998209B (en) | 2013-11-19 | 2013-11-19 | Wireless signal receiver and method |
| CN201310585195.6A CN104660291B (en) | 2013-11-19 | 2013-11-19 | Device and method for receiving wireless signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585195.6A CN104660291B (en) | 2013-11-19 | 2013-11-19 | Device and method for receiving wireless signals |
Related Child Applications (1)
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| CN106998209B (en) | 2019-08-23 |
| CN104660291A (en) | 2015-05-27 |
| CN106998209A (en) | 2017-08-01 |
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