CN106100644A - The conjugate phase acquisition device changed based on direct radio frequency and method - Google Patents
The conjugate phase acquisition device changed based on direct radio frequency and method Download PDFInfo
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- CN106100644A CN106100644A CN201610341870.4A CN201610341870A CN106100644A CN 106100644 A CN106100644 A CN 106100644A CN 201610341870 A CN201610341870 A CN 201610341870A CN 106100644 A CN106100644 A CN 106100644A
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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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0032—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage with analogue quadrature frequency conversion to and from the baseband
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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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0035—Channel filtering, i.e. selecting a frequency channel within a software radio system
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Abstract
The invention discloses a kind of conjugate phase acquisition device changed based on direct radio frequency and method.This device includes: signal pre-processing module, for receiving the incoming wave signal carrying phase information of retrodirective array transmission, incoming wave signal carries out pretreatment and generates a pair differential signal, and by a pair differential signal transmission to i/q signal demodulation module；I/q signal demodulation module, for being mixed a pair differential signal received, down-converted, obtains a pair I/Q baseband signal, and by a pair I/Q base band signal transmission to i/q signal modulation module；I/q signal modulation module, for a pair I/Q baseband signal received carries out upconversion process, obtains the radiofrequency signal carrying the phase information with phase information conjugation.The present invention, by the incoming wave signal carrying phase information carries out double conversion process, obtains and the phase information of this phase information conjugation, has low cost, the advantage obtaining conjugate phase quickly and efficiently.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of conjugate phase acquisition device changed based on direct radio frequency
And method.
Background technology
The high speed development of communication system has expedited the emergence of the development of smart antenna, and smart antenna can be effectively improved the profit of frequency spectrum
By efficiency, improve channel capacity and communication quality.Retrodirective array is a kind of novel intelligence based on phase conjugation
Antenna, can point to arrival bearing by the launching beam of array automatically, and without the priori of arrival bearing, this feature makes
It has broad application prospects in Modern Mobile Communications Systems.
In retrodirective array, realize reverse key technology be to obtain the phase information of incoming wave signal, and be conjugated
Process.The method asking for conjugate phase has a lot, and the principle of the reverse array of Van Atta is relatively easy, and has on the received signal
Bigger restriction, at present and be not belonging to the reverse implementation method of main flow；Superhet approach requires a stable local oscillation signal frequency
Rate reaches two times of the radio frequency signal frequency received, and local oscillation signal proposes higher requirement, especially answering at millimeter wave
It is very restricted in.Corresponding solution is to use repeatedly frequency conversion, and this needs complicated sideband filter.Towards
In the retrodirective array system of actual application, usually require that and receive more weak signal, launch a stronger signal, for tradition
Retrodirective array system based on frequency mixer, this is relatively difficult to achieve, the loss brought due to frequency mixer, causes again launching
Signal power less than receiving the power of signal, need outside amplifier, the impact general brought due to amplifier nonlinearity
The complexity causing system increases further.The ultimate principle of digital phase yoked technique uses Digital Down Convert to carry exactly
Take out the phase information receiving signal, use DSP processs to obtain its conjugate phase, conjugate phase is joined and launches in signal again
Go out by becoming emission of radio frequency signals after Digital Up Convert resume module.Digital phase conjugate circuit has and compares additive method
Preferably motility, it is possible to achieve more rich function, but cost is of a relatively high, limited performance is in the conversion of A/D and DSP and place
Reason speed.
Summary of the invention
For defect of the prior art, the invention provides a kind of conjugate phase changed based on direct radio frequency and obtain dress
Put and method, there is low cost, the advantage obtaining conjugate phase quickly and efficiently.
The present invention proposes a kind of conjugate phase acquisition device changed based on direct radio frequency, including: Signal Pretreatment mould
Block, i/q signal modulation module and i/q signal modulation module, wherein,
Described signal pre-processing module, for receiving the incoming wave letter carrying phase information of described retrodirective array transmission
Number, described incoming wave signal is carried out pretreatment and generates a pair differential signal, and by the pair of differential signal transmission to described I/Q
Signal demodulation module；
Described i/q signal demodulation module, for being mixed the pair of differential signal received, at down coversion
Reason, obtains a pair I/Q baseband signal, and by the pair of I/Q base band signal transmission to described i/q signal modulation module；
Described i/q signal modulation module, for the pair of I/Q baseband signal received is carried out upconversion process,
Obtain the radiofrequency signal carrying the phase information being conjugated with described phase information.
Preferably, described signal pre-processing module includes: match circuit, filter circuit, amplifying circuit and balance non-flat
Weighing apparatus transducer, wherein,
Described match circuit, for receiving the incoming wave signal of described retrodirective array transmission, and sends out described incoming wave signal
Deliver to filter circuit；
Described filter circuit, for being filtered process, and by the incoming wave signal after Filtering Processing to described incoming wave signal
Transmission is to described amplifying circuit；
Described amplifying circuit, for being amplified process, and by the incoming wave after processing and amplifying to the incoming wave signal received
Signal transmission is to described balun；
Described balun, for the incoming wave signal received carries out uneven balance conversion, generates institute
State a pair differential signal of incoming wave signal.
Preferably, described i/q signal demodulation module includes: the first local oscillator unit, the first phase shifter, the first down coversion mixing
Device and the second down-conversion mixer；
Described first local oscillator unit, for generating the first local oscillation signal according to described phase information, and by described first
The signal that shakes transmission is to described first phase shifter；
Described first phase shifter, for carrying out phase shift process to described first local oscillation signal, and by the first after phase shift
The signal that shakes transmission is to described first down-conversion mixer and described second down-conversion mixer；
Described first down-conversion mixer, for according to the first local oscillation signal received, to the pair of differential signal
In the first differential signal carry out being mixed, down-converted；
Described second down-conversion mixer, for according to the first local oscillation signal received, to the pair of differential signal
In the second differential signal carry out being mixed, down-converted.
Preferably, described i/q signal demodulation module also includes: the first low pass filter, the second low pass filter, first put
Big device and the second amplifier；
Described first low pass filter, for filtering the I/Q baseband signal in the pair of I/Q baseband signal
Ripple processes, and transmits to the first amplifier；
Described first amplifier, for being amplified process to a filtered I/Q baseband signal；
Described second low pass filter, for filtering the 2nd I/Q baseband signal in the pair of I/Q baseband signal
Ripple processes, and transmits to the first amplifier；
Described second amplifier, for being amplified process to filtered 2nd I/Q baseband signal.
Preferably, described i/q signal modulation module includes: the second local oscillator unit, the second phase shifter, the first up-conversion mixing
Device, the second up-conversion mixer, band filter and power amplifier；
Described second local oscillator unit, for generating the second local oscillation signal according to described phase information, and by described first
The signal that shakes transmission is to described second phase shifter；
Described second phase shifter, for carrying out phase shift process, and by second after phase shift to described second local oscillation signal
The signal that shakes transmission is to a described up-conversion mixer and the second up-conversion mixer；
Described first up-conversion mixer, for according to the second local oscillation signal received, believing the pair of I/Q base band
An I/Q baseband signal in number carries out being mixed, upconversion process；
Described second up-conversion mixer, for according to the second local oscillation signal received, believing the pair of I/Q base band
The 2nd I/Q baseband signal in number carries out being mixed, down-converted；
Described band filter, for a pair I/Q baseband signal after upconversion process being filtered process, and will filter
A pair I/Q base band signal transmission after ripple process is to described power amplifier；
Described power amplifier, processes for being amplified a pair I/Q baseband signal received, obtain carry with
The radiofrequency signal of the phase information of described phase information conjugation.
As shown from the above technical solution, the conjugate phase acquisition device changed based on direct radio frequency that the present invention proposes is logical
Cross and the incoming wave signal carrying phase information is carried out double conversion process, obtain and the phase information of this phase information conjugation, tool
There are low cost, the advantage obtaining conjugate phase quickly and efficiently.
The invention allows for a kind of conjugate phase acquisition methods changed based on direct radio frequency, including:
Receive the incoming wave signal carrying phase information of described retrodirective array transmission, described incoming wave signal is carried out pre-
Process and generate a pair differential signal；
The pair of differential signal is mixed, down-converted, obtain a pair I/Q baseband signal；
The pair of I/Q baseband signal is carried out upconversion process, obtains and carry the phase being conjugated with described phase information
The radiofrequency signal of position information.
Preferably, described described incoming wave signal is carried out pretreatment generate the step of a pair differential signal and specifically include:
Described incoming wave signal is filtered, processing and amplifying；
Incoming wave signal after filtering, processing and amplifying is carried out uneven balance conversion, generates a pair of described incoming wave signal
Differential signal.
Preferably, described the pair of differential signal being mixed, down-converted, obtain a pair I/Q base band letter
Number step before, also include:
Generate the first local oscillation signal according to described phase information, and described first local oscillation signal is carried out phase shift process；
Correspondingly, described the pair of differential signal is mixed, down-converted, obtains a pair I/Q baseband signal
Step specifically include:
The first local oscillation signal after processing according to phase shift, mixes the first differential signal in the pair of differential signal
Frequently, down-converted.
Preferably, described the pair of differential signal being mixed, down-converted, obtain a pair I/Q base band letter
Number step after, also include:
Respectively the I/Q baseband signal in the pair of I/Q baseband signal and the 2nd I/Q baseband signal are filtered
Ripple, processing and amplifying.
Preferably, described, the pair of I/Q baseband signal is carried out upconversion process, obtain and carry and described phase place
Before the step of the radiofrequency signal of the phase information of information conjugation, also include:
Generate the second local oscillation signal according to described phase information, and carry out phase shift process to described second local oscillation signal；
Correspondingly, described upconversion process that the pair of I/Q baseband signal is carried out, obtain to carry and believe with described phase place
The step of the radiofrequency signal of the phase information of breath conjugation specifically includes:
According to described second local oscillation signal, the I/Q baseband signal in the pair of I/Q baseband signal is mixed
Frequently, upconversion process.
As shown from the above technical solution, the conjugate phase acquisition methods changed based on direct radio frequency that the present invention proposes is logical
Cross and the incoming wave signal carrying phase information is carried out double conversion process, obtain and the phase information of this phase information conjugation, tool
There are low cost, the advantage obtaining conjugate phase quickly and efficiently.
Accompanying drawing explanation
By being more clearly understood from the features and advantages of the present invention with reference to accompanying drawing, accompanying drawing is schematic and should not manage
Solve as the present invention is carried out any restriction, in the accompanying drawings:
Fig. 1 shows the structure of the conjugate phase acquisition device changed based on direct radio frequency that one embodiment of the invention provides
Schematic diagram；
Signal in the conjugate phase acquisition device changed based on direct radio frequency that Fig. 2 shows that one embodiment of the invention provides
The structural representation of pretreatment module；
I/Q in the conjugate phase acquisition device changed based on direct radio frequency that Fig. 3 shows that one embodiment of the invention provides
The structural representation of signal demodulation module；
I/Q in the conjugate phase acquisition device changed based on direct radio frequency that Fig. 4 shows that one embodiment of the invention provides
The structural representation of signal modulation module；
Fig. 5 shows the flow process of the conjugate phase acquisition methods changed based on direct radio frequency that one embodiment of the invention provides
Schematic diagram.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
The structural representation of the conjugate phase acquisition changed based on direct radio frequency that Fig. 1 provides for one embodiment of the invention,
With reference to Fig. 1, it is somebody's turn to do the conjugate phase acquisition device changed based on direct radio frequency, including: signal pre-processing module 10, i/q signal are adjusted
Molding block 20 and i/q signal modulation module 30, wherein,
Described signal pre-processing module 10, for receiving the incoming wave carrying phase information of described retrodirective array transmission
Signal, carries out pretreatment and generates a pair differential signal described incoming wave signal, and by the pair of differential signal transmission to described
I/q signal demodulation module；
Described i/q signal demodulation module 20, for being mixed the pair of differential signal received, at down coversion
Reason, obtains a pair I/Q baseband signal, and by the pair of I/Q base band signal transmission to described i/q signal modulation module；
Described i/q signal modulation module 30, for carrying out at up-conversion the pair of I/Q baseband signal received
Reason, obtains the radiofrequency signal carrying the phase information being conjugated with described phase information.
The conjugate phase acquisition device changed based on direct radio frequency that the present invention proposes, by coming carrying phase information
Ripple signal carries out double conversion process, obtains and the phase information of this phase information conjugation, has low cost, quickly and efficiently
The advantage obtaining conjugate phase.
In the conjugate phase acquisition device changed based on direct radio frequency that Fig. 2 provides for one embodiment of the invention, signal is located in advance
The structural representation of reason module, with reference to Fig. 2, signal pre-processing module 10 includes: match circuit 11, filter circuit 12, amplification electricity
Road 13 and balun 14, wherein,
Described match circuit 11, for receiving the incoming wave signal of described retrodirective array transmission, and by described incoming wave signal
Send to filter circuit；
Described filter circuit 12, for described incoming wave signal is filtered process, and believes the incoming wave after Filtering Processing
Number transmission is to described amplifying circuit；
Described amplifying circuit 13, for being amplified process, and by coming after processing and amplifying to the incoming wave signal received
The transmission of ripple signal is to described balun；
Described balun 14, for the incoming wave signal received carries out uneven balance conversion, generates
A pair differential signal of described incoming wave signal.
Seeing Fig. 2, incoming wave signal A is through match circuit 11, filter circuit 12, amplifying circuit 113 and balance/unbalance
The filtering of transducer 14, amplification, uneven balance conversion process, finally export a pair differential signal B.
I/q signal in the conjugate phase acquisition device changed based on direct radio frequency that Fig. 3 provides for one embodiment of the invention
The structural representation of demodulation module 20, this i/q signal demodulation module includes: the first 21, first phase shifter of local oscillator unit 22, first
Down-conversion mixer 23 and the second down-conversion mixer 24；
Described first local oscillator unit 21, for generating the first local oscillation signal according to described phase information, and by described first
Local oscillation signal transmission is to described first phase shifter 22；
Described first phase shifter 22, for carrying out phase shift process to described first local oscillation signal, and by first after phase shift
Local oscillation signal transmission is to described first down-conversion mixer 23 and described second down-conversion mixer 24；
Described first down-conversion mixer 23, for according to the first local oscillation signal received, believing the pair of difference
The first differential signal in number carries out being mixed, down-converted；
Described second down-conversion mixer 24, for according to the first local oscillation signal received, believing the pair of difference
The second differential signal in number carries out being mixed, down-converted.
In another possible embodiments, described i/q signal demodulation module also includes: the first low pass filter 25, second is low
Bandpass filter the 26, first amplifier 27 and the second amplifier 28；
Described first low pass filter 25, for carrying out the I/Q baseband signal in the pair of I/Q baseband signal
Filtering Processing, and transmit to the first amplifier；
Described first amplifier 27, for being amplified process to a filtered I/Q baseband signal；
Described second low pass filter 26, for carrying out the 2nd I/Q baseband signal in the pair of I/Q baseband signal
Filtering Processing, and transmit to the first amplifier；
Described second amplifier 28, for being amplified process to filtered 2nd I/Q baseband signal.
I/q signal in the conjugate phase acquisition device changed based on direct radio frequency that Fig. 4 provides for one embodiment of the invention
The structural representation of modulation module, sees Fig. 4, and this i/q signal modulation module 30 includes: second local oscillator unit the 31, second phase shift
Device the 32, first up-conversion mixer the 33, second up-conversion mixer 34, band filter 35 and power amplifier 36；
Described second local oscillator unit 31, for generating the second local oscillation signal according to described phase information, and by described first
Local oscillation signal transmission is to described second phase shifter 32；
Described second phase shifter 32, for carrying out phase shift process to described second local oscillation signal, and by second after phase shift
Local oscillation signal transmission is to described up-conversion mixer 33 and second up-conversion mixer 34；
Described first up-conversion mixer 33, for according to the second local oscillation signal received, to the pair of I/Q base band
An I/Q baseband signal in signal carries out being mixed, upconversion process；
Described second up-conversion mixer 34, for according to the second local oscillation signal received, to the pair of I/Q base band
The 2nd I/Q baseband signal in signal carries out being mixed, down-converted；
Described band filter 35, for a pair I/Q baseband signal after upconversion process being filtered process, and will
A pair I/Q base band signal transmission after Filtering Processing is to described power amplifier 36；
Described power amplifier 36, for a pair I/Q baseband signal received is amplified process, acquisition carries
Radiofrequency signal with the phase information that described phase information is conjugated.
Principle referring to-4 couples of present invention of Fig. 1 is described in detail:
Assuming that incoming wave signal A is r (t)=A (t) cos (ω t+ φ), its signal angular frequency is ω, and initial phase is φ, warp
Cross signal pre-processing module 10, obtain a pair differential signal B.
In i/q signal demodulation module 20, the first local oscillator unit 21 produces the first local oscillation signal C is rC(t)=AC(t)cos
(ωLO1t+φLO1), the first local oscillation signal angular frequency is ωLO1, phase place is φLO1, pass throughAfter phase shifter 22, there are 90 ° of phases in it
Moving, obtaining signal D is
The first local oscillation signal D after phase shift and difference initial signal B is inputted the first down-conversion mixer 23, after mixing,
By the first low pass filter 25, then after the first amplifier 27 amplifies, obtain Q road signal:
First local oscillation signal C and difference initial signal B is inputted the second down-conversion mixer 24, after mixing, by second
Low pass filter 26 filters higher hamonic wave, then after the second amplifier 28 amplifies, obtaining I road signal is rI=AI(t)cos
[(ω-ωLO1)t+φ-φLO1]。
Wherein, the angular frequency of two paths of signals is all ω-ωLO1, and comprise incoming wave phase.
In i/q signal modulation module 30, the second local oscillator unit 31 produces the second local oscillation signal E is rE(t)=AE(t)cos
(ωLO2t+φLO2), the second local oscillation signal angular frequency is ωLO2, phase place is φLO2, after pi/2 phase shifter 32, obtain signal F
For
The second local oscillation signal F after phase shift is inputted the first up-conversion mixer 33 with baseband signal I and carries out up-conversion, the
Two local oscillation signal E and baseband signal Q input the second up-conversion mixer 34, after mixed signal synthesis, pass through band filter
35 filter higher hamonic wave, and after power amplifier 36, obtaining output radiofrequency signal G isOutput radio frequency signal frequency is ωLO1+ωLO2-ω, comprises to come
Conjugate phase-the φ of wave phase φ.
In sum, the conjugate phase acquisition device changed based on direct radio frequency that the present invention proposes, by carrying phase
The incoming wave signal of position information carries out double conversion process, obtains and the phase information of this phase information conjugation, has low cost, fast
Speed, the advantage effectively obtaining conjugate phase.
It should be noted that, in all parts of assembly of the invention, the function to be realized according to it and to therein
Parts have carried out logical partitioning, but, the present invention is not only restricted to this, can as required all parts be repartitioned or
Person combines.
The all parts embodiment of the present invention can realize with hardware, or to transport on one or more processor
The software module of row realizes, or realizes with combinations thereof.The present invention can be implemented as performing side as described herein
Part or all equipment of method or device program (such as, computer program and computer program).So real
The program of the existing present invention can store on a computer-readable medium, and the file or document that program produces has and can add up
Property, produce data report and cpk report etc., power amplifier can be carried out batch testing and add up.It should be noted above-mentioned embodiment party
The present invention will be described rather than limits the invention for formula, and those skilled in the art are wanting without departing from appended right
Replacement embodiment can be designed in the case of the scope asked.In the claims, any ginseng between bracket should not will be located in
Examine symbol construction and become limitations on claims.Word " comprises " and does not excludes the presence of the element or step not arranged in the claims
Suddenly.Word "a" or "an" before being positioned at element does not excludes the presence of multiple such element.The present invention can be by means of bag
Include the hardware of some different elements and realize by means of properly programmed computer.If listing the unit of equipment for drying
In claim, several in these devices can be specifically to be embodied by same hardware branch.Word first, second,
And third use does not indicates that any order.Can be title by these word explanations.
The flow process signal of the conjugate phase acquisition methods changed based on direct radio frequency that Fig. 5 provides for one embodiment of the invention
Figure, with reference to Fig. 5, is somebody's turn to do the conjugate phase acquisition methods changed based on direct radio frequency, including:
S100, receive described retrodirective array transmission the incoming wave signal carrying phase information, to described incoming wave signal
Carry out pretreatment and generate a pair differential signal；
S200, the pair of differential signal is mixed, down-converted, obtain a pair I/Q baseband signal；
S300, the pair of I/Q baseband signal is carried out upconversion process, obtain to carry and be conjugated with described phase information
The radiofrequency signal of phase information.
The conjugate phase acquisition methods changed based on direct radio frequency that the present invention proposes, by coming carrying phase information
Ripple signal carries out double conversion process, obtains and the phase information of this phase information conjugation, has low cost, quickly and efficiently
The advantage obtaining conjugate phase.
Below the method is described in detail:
Step S100 specifically includes:
Described incoming wave signal is filtered, processing and amplifying；
Incoming wave signal after filtering, processing and amplifying is carried out uneven balance conversion, generates a pair of described incoming wave signal
Differential signal.
Before step S200, the method also includes:
Generate the first local oscillation signal according to described phase information, and described first local oscillation signal is carried out phase shift process；
Correspondingly, step S200 specifically includes:
The first local oscillation signal after processing according to phase shift, mixes the first differential signal in the pair of differential signal
Frequently, down-converted.
After step S200, the method also includes:
Respectively the I/Q baseband signal in the pair of I/Q baseband signal and the 2nd I/Q baseband signal are filtered
Ripple, processing and amplifying.
Before step S300, the method also includes:
Generate the second local oscillation signal according to described phase information, and carry out phase shift process to described second local oscillation signal；
Correspondingly, step S300 specifically includes:
According to described second local oscillation signal, the I/Q baseband signal in the pair of I/Q baseband signal is mixed
Frequently, upconversion process.
For method embodiment, in order to be briefly described, therefore it is all expressed as a series of combination of actions, but ability
Field technique personnel should know, embodiment of the present invention is not limited by described sequence of movement, because according to the present invention
Embodiment, some step can use other orders or carry out simultaneously.Secondly, those skilled in the art also should know,
Embodiment described in this description belongs to preferred implementation, involved action embodiment party the most of the present invention
Necessary to formula.
Although being described in conjunction with the accompanying embodiments of the present invention, but those skilled in the art can be without departing from this
Making various modifications and variations in the case of bright spirit and scope, such amendment and modification each fall within by claims
Within limited range.
Claims (10)
1. the conjugate phase acquisition device changed based on direct radio frequency, it is characterised in that including: signal pre-processing module,
I/q signal demodulation module and i/q signal modulation module, wherein,
Described signal pre-processing module, for receiving the incoming wave signal carrying phase information of described retrodirective array transmission,
Described incoming wave signal is carried out pretreatment and generates a pair differential signal, and the pair of differential signal transmission to described I/Q is believed
Number demodulation module；
Described i/q signal demodulation module, for being mixed the pair of differential signal received, down-converted, obtains
Take a pair I/Q baseband signal, and by the pair of I/Q base band signal transmission to described i/q signal modulation module；
Described i/q signal modulation module, for the pair of I/Q baseband signal received is carried out upconversion process, obtains
Carry the radiofrequency signal of the phase information being conjugated with described phase information.
Device the most according to claim 1, it is characterised in that described signal pre-processing module includes: match circuit, filtered electrical
Road, amplifying circuit and balun, wherein,
Described match circuit, for receiving the incoming wave signal of described retrodirective array transmission, and sends described incoming wave signal extremely
Filter circuit；
Described filter circuit, for described incoming wave signal is filtered process, and transmits the incoming wave signal after Filtering Processing
To described amplifying circuit；
Described amplifying circuit, for being amplified process, and by the incoming wave signal after processing and amplifying to the incoming wave signal received
Transmission is to described balun；
Described balun, for the incoming wave signal received carries out uneven balance conversion, generates described next
A pair differential signal of ripple signal.
Device the most according to claim 1, it is characterised in that described i/q signal demodulation module includes: the first local oscillator unit,
First phase shifter, the first down-conversion mixer and the second down-conversion mixer；
Described first local oscillator unit, for generating the first local oscillation signal according to described phase information, and by described first local oscillator letter
Number transmission is to described first phase shifter；
Described first phase shifter, for carrying out phase shift process, and by the first local oscillator letter after phase shift to described first local oscillation signal
Number transmission is to described first down-conversion mixer and described second down-conversion mixer；
Described first down-conversion mixer, for according to the first local oscillation signal received, in the pair of differential signal
First differential signal carries out being mixed, down-converted；
Described second down-conversion mixer, for according to the first local oscillation signal received, in the pair of differential signal
Second differential signal carries out being mixed, down-converted.
Device the most according to claim 3, it is characterised in that described i/q signal demodulation module also includes: the first low-pass filtering
Device, the second low pass filter, the first amplifier and the second amplifier；
Described first low pass filter, for being filtered place to the I/Q baseband signal in the pair of I/Q baseband signal
Reason, and transmit to the first amplifier；
Described first amplifier, for being amplified process to a filtered I/Q baseband signal；
Described second low pass filter, for being filtered place to the 2nd I/Q baseband signal in the pair of I/Q baseband signal
Reason, and transmit to the first amplifier；
Described second amplifier, for being amplified process to filtered 2nd I/Q baseband signal.
Device the most according to claim 1, it is characterised in that described i/q signal modulation module includes: the second local oscillator unit,
Second phase shifter, the first up-conversion mixer, the second up-conversion mixer, band filter and power amplifier；
Described second local oscillator unit, for generating the second local oscillation signal according to described phase information, and by described first local oscillator letter
Number transmission is to described second phase shifter；
Described second phase shifter, for carrying out phase shift process, and by the second local oscillator letter after phase shift to described second local oscillation signal
Number transmission is to a described up-conversion mixer and the second up-conversion mixer；
Described first up-conversion mixer, for according to the second local oscillation signal received, in the pair of I/Q baseband signal
An I/Q baseband signal carry out being mixed, upconversion process；
Described second up-conversion mixer, for according to the second local oscillation signal received, in the pair of I/Q baseband signal
The 2nd I/Q baseband signal carry out being mixed, down-converted；
Described band filter, for being filtered process, and by filtering to a pair I/Q baseband signal after upconversion process
A pair I/Q base band signal transmission after reason is to described power amplifier；
Described power amplifier, for a pair I/Q baseband signal received is amplified process, obtains and carries with described
The radiofrequency signal of the phase information of phase information conjugation.
6. the conjugate phase acquisition methods changed based on direct radio frequency, it is characterised in that including:
Receive the incoming wave signal carrying phase information of described retrodirective array transmission, described incoming wave signal is carried out pretreatment
Generate a pair differential signal；
The pair of differential signal is mixed, down-converted, obtain a pair I/Q baseband signal；
The pair of I/Q baseband signal is carried out upconversion process, obtains and carry the phase place letter being conjugated with described phase information
The radiofrequency signal of breath.
Method the most according to claim 6, it is characterised in that described described incoming wave signal is carried out pretreatment generate a pair poor
The step of sub-signal specifically includes:
Described incoming wave signal is filtered, processing and amplifying；
Incoming wave signal after filtering, processing and amplifying is carried out uneven balance conversion, generates a pair difference of described incoming wave signal
Signal.
Method the most according to claim 6, it is characterised in that described the pair of differential signal being mixed, lower change
Frequency processes, and before obtaining the step of a pair I/Q baseband signal, also includes:
Generate the first local oscillation signal according to described phase information, and described first local oscillation signal is carried out phase shift process；
Correspondingly, described the pair of differential signal is mixed, down-converted, obtains the step of a pair I/Q baseband signal
Suddenly specifically include:
The first local oscillation signal after processing according to phase shift, the first differential signal in the pair of differential signal is mixed,
Down-converted.
Method the most according to claim 8, it is characterised in that described the pair of differential signal being mixed, lower change
Frequency processes, and after obtaining the step of a pair I/Q baseband signal, also includes:
Respectively the I/Q baseband signal in the pair of I/Q baseband signal and the 2nd I/Q baseband signal are filtered, put
Big process.
Method the most according to claim 6, it is characterised in that the pair of I/Q baseband signal is carried out up-conversion described
Process, before obtaining the step of the radiofrequency signal carrying the phase information being conjugated with described phase information, also include:
Generate the second local oscillation signal according to described phase information, and carry out phase shift process to described second local oscillation signal；
Correspondingly, described upconversion process that the pair of I/Q baseband signal is carried out, obtain and carry with described phase information altogether
The step of the radiofrequency signal of the phase information of yoke specifically includes:
According to described second local oscillation signal, the I/Q baseband signal in the pair of I/Q baseband signal is mixed, on
Frequency-conversion processing.
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