CN109217825A - Power amplification device and its signal processing method, device - Google Patents
Power amplification device and its signal processing method, device Download PDFInfo
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- CN109217825A CN109217825A CN201811234556.1A CN201811234556A CN109217825A CN 109217825 A CN109217825 A CN 109217825A CN 201811234556 A CN201811234556 A CN 201811234556A CN 109217825 A CN109217825 A CN 109217825A
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- 230000003321 amplification Effects 0.000 title claims abstract description 41
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 41
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 68
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- 238000001514 detection method Methods 0.000 claims description 68
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- 238000004891 communication Methods 0.000 abstract description 10
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
Abstract
The present invention relates to a kind of power amplification device and its signal processing method, device, the equipment include be separately connected power amplifier, low-converter, upconverter controller, and the peak-to-average force ratio regulating device being connected between low-converter and upconverter；Peak-to-average force ratio regulating device will test the mean information that intermediate-freuqncy signal obtains and peak information transfer to controller；Controller obtains peak-to-average force ratio information according to mean information and peak information, and the mean value that processing target peak-to-average force ratio information and peak-to-average force ratio information obtain is adjusted information, is transferred to peak-to-average force ratio regulating device；Peak-to-average force ratio regulating device adjusts information processing intermediate-freuqncy signal according to mean value, obtains M signal, and M signal is transferred to upconverter, so that the radiofrequency signal that upconverter is obtained to power amplifier output reason M signal.Optimization to signal peak-to-average ratio can be realized using the embodiment of the present invention, effectively increase that power amplifier is linear, the cost of power amplifying device is reduced while meeting communications applications.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to a kind of power amplification device and its signal processing method, dress
It sets.
Background technique
With the development of communication technology, the RF power amplification at present in communications applications generallys use number or analog linearization skill
Art is to meet communication needs, for some special communications applications, number or analog linearization technology is excessively complicated and cost compared with
It is high.And RF power amplification in modulated signal in application, power amplifier itself linearly be difficult to meet system requirements, need using linearisation skill
Art meets the needs of system, and usual linearization technique has digital pre-distortion, feedforward and RFPAL technology etc., although these technologies
Linearity correction ability is strong, but complex disposal process and at high cost.
During realization, inventor has found that at least there are the following problems: traditional RF power amplification cost in traditional technology
Height, and power amplifier is linearly difficult to meet system requirements.
Summary of the invention
Based on this, it is necessary to it is at high cost for traditional RF power amplification, and power amplifier is linearly difficult to meet asking for system requirements
Topic provides a kind of power amplification device and its signal processing method, device.
To achieve the goals above, the embodiment of the invention provides a kind of power amplification devices, including are separately connected power
Amplifier, low-converter, upconverter controller, and the peak-to-average force ratio that is connected between low-converter and upconverter adjusts
Device；Controller connects peak-to-average force ratio regulating device；
Peak-to-average force ratio regulating device receives the intermediate-freuqncy signal of low-converter transmission, and will test the mean value letter that intermediate-freuqncy signal obtains
Breath and peak information transfer are to controller；
Controller obtains peak-to-average force ratio information according to mean information and peak information, and by processing target peak-to-average force ratio information and
The mean value that peak-to-average force ratio information obtains adjusts information, is transferred to peak-to-average force ratio regulating device；
Peak-to-average force ratio regulating device adjusts information processing intermediate-freuqncy signal according to mean value, obtains M signal, and by M signal
It is transferred to upconverter, so that the radiofrequency signal that upconverter is obtained to power amplifier output reason M signal.
Peak-to-average force ratio regulating device includes that sequentially connected mean value adjusts unit and peak value adjusting in one of the embodiments,
Unit；Mean value adjusts unit and connects low-converter；Peak value adjusts unit and connects upconverter；Controller is separately connected mean value adjusting
Unit and peak value adjust unit；
Mean value adjusting information is transferred to by controller when detecting target peak-to-average force ratio information and peak-to-average force ratio information difference
Value adjusts unit；
Mean value adjusts unit and adjusts information processing intermediate-freuqncy signal according to mean value, obtains first M signal；Mean value adjusts single
First M signal is transferred to peak value and adjusts unit by member, and be will test the mean information that first M signal obtains and be transferred to control
Device processed；
Peak value adjusts cell processing first M signal, obtains second M signal；Peak value adjusts unit will be among second
Signal is transferred to upconverter, and will test peak information transfer that second M signal obtains to controller.
It includes ATT electricity tune attenuator circuit and connection ATT electricity tune decaying that mean value, which adjusts unit, in one of the embodiments,
First mean value detecting circuit of circuit；
One end of ATT electricity tune attenuator circuit connects low-converter, and the other end connects controller；First mean value detecting circuit
One end connects peak value and adjusts unit, and the other end connects controller；
ATT electricity tune attenuator circuit adjusts information processing intermediate-freuqncy signal according to mean value and obtains first M signal, and by first
M signal is transferred to the first mean value detecting circuit；
First mean value detecting circuit detection first M signal obtains mean information, and mean information is transferred to control
Device.
It includes peak value amplitude limiter circuit and connection peak value amplitude limiter circuit that peak value, which adjusts unit, in one of the embodiments,
First peak detection circuit；
Peak value amplitude limiter circuit connects mean value and adjusts unit；One end of first peak detection circuit connects upconverter, another
End connection controller；
Peak value amplitude limiter circuit processing first M signal obtains second M signal, and second M signal is transferred to the
One peak detection circuit；
First peak detection circuit will test second M signal and obtain peak information, and by peak information transfer to control
Device.
In one of the embodiments, peak-to-average force ratio regulating device further include be connected to low-converter and mean value adjust unit it
Between peak to average detection unit；Peak to average detection unit connects controller；
Peak to average detection unit detects intermediate-freuqncy signal, obtains initial mean value information and initial spike information, and will
Initial mean value information and initial spike information are transferred to controller；
Controller obtains initial peak-to-average force ratio information according to initial mean value information and initial spike information.
Peak to average detection unit includes the second peak value of the second peak detection circuit and connection in one of the embodiments,
Second mean value detecting circuit of detection circuit；
One end of second peak detection circuit connects low-converter, and the other end connects controller；Second mean value detecting circuit
One end connection mean value adjust unit, the other end connect controller；
Second peak detection circuit detects intermediate-freuqncy signal, obtains initial spike information；
Second mean value detecting circuit detects intermediate-freuqncy signal, obtains initial mean value information.
In one of the embodiments, peak-to-average force ratio regulating device further include be connected to peak value adjust unit and upconverter it
Between regeneration frequency spectrum filter out unit.
It is intermediate-frequency filter that regeneration frequency spectrum, which filters out unit, in one of the embodiments,.
It in one of the embodiments, further include local vibration source；Local vibration source is separately connected controller, low-converter and up-conversion
Device；
Controller controls local vibration source and exports the first local oscillation signal to low-converter according to preset carrier wave frequency information, with
Low-converter is set to export intermediate-freuqncy signal according to the first local oscillation signal；
Controller controls local vibration source and exports the second local oscillation signal to upconverter, so that upper change according to carrier wave frequency information
Frequency device exports radiofrequency signal according to the second local oscillation signal.
On the other hand, the embodiment of the invention also provides a kind of signal processing methods, comprising the following steps:
According to mean information and peak information, peak-to-average force ratio information is obtained；
Processing target peak-to-average force ratio information and peak-to-average force ratio information obtain mean value and adjust information, and mean value is adjusted information transmission
Give peak-to-average force ratio regulating device；Mean value adjusting information is used to indicate peak-to-average force ratio regulating device processing intermediate-freuqncy signal and obtains M signal,
And M signal is transferred to upconverter.
On the other hand, the embodiment of the invention also provides a kind of signal processing apparatus, comprising:
Peak-to-average force ratio information acquisition unit, for obtaining peak-to-average force ratio information according to mean information and peak information；
Peak-to-average force ratio adjusts unit, is used for processing target peak-to-average force ratio information and peak-to-average force ratio information, obtains mean value and adjusts information, and
Mean value adjusting information is transferred to peak-to-average force ratio regulating device；Mean value adjusts information and is used to indicate peak-to-average force ratio regulating device processing intermediate frequency
Signal obtains M signal, and M signal is transferred to upconverter.
On the other hand, the embodiment of the invention also provides a kind of computer readable storage medium, it is stored thereon with computer
Program, the step of above-mentioned signal processing method is realized when computer program is executed by processor.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
Power amplifier, low-converter, upconverter and peak-to-average force ratio regulating device are separately connected based on controller.Input letter
Number intermediate-freuqncy signal is converted into after low-converter；Peak-to-average force ratio regulating device detects the mean information and peak value letter of intermediate-freuqncy signal
Breath, and by mean information and peak information transfer to controller；Controller obtains peak-to-average force ratio according to mean information and peak information
Information；Controller processing target peak-to-average force ratio information and peak-to-average force ratio information obtain peak to average and adjust information, and peak to average is adjusted and is believed
Breath is transferred to peak-to-average force ratio regulating device；Peak-to-average force ratio regulating device adjusts information processing intermediate-freuqncy signal according to peak to average, obtains centre
Signal, and the M signal is transferred to upconverter, so that upconverter is obtained to power amplifier output reason M signal
The radiofrequency signal arrived, and then power amplifier carries out power amplification to radiofrequency signal, and then exports radio frequency amplified signal.Based on this
Each embodiment is invented, input signal can realize the adjusting of signal mean value and signal peak in peak-to-average force ratio regulating device transmission process
Clipping realizes the optimization to signal peak-to-average ratio, effectively increases power amplifier line so that output signal meets target peak-to-average force ratio
Property, the cost of power amplifying device is reduced while meeting communications applications.
Detailed description of the invention
Fig. 1 is the first schematic structure schematic diagram of power amplification device in one embodiment；
Fig. 2 is the first structure diagram of peak-to-average force ratio regulating device in one embodiment；
Fig. 3 is the structural schematic diagram that mean value adjusts unit in one embodiment；
Fig. 4 is the structural schematic diagram that peak value adjusts unit in one embodiment；
Fig. 5 is the second structural schematic diagram of peak-to-average force ratio regulating device in one embodiment；
Fig. 6 is the structural schematic diagram of peak to average detection unit in one embodiment；
Fig. 7 is the second schematic structure schematic diagram of power amplification device in one embodiment；
Fig. 8 is the third schematic structure schematic diagram of power amplification device in one embodiment；
Fig. 9 is the flow diagram of signal processing method in one embodiment；
Figure 10 is the structural block diagram of signal processing apparatus in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
In one embodiment, as shown in Figure 1, providing a kind of power amplification device, including it is separately connected power amplification
Device 120, low-converter 130, upconverter 140 controller 110, and be connected to low-converter 130 and upconverter 140 it
Between peak-to-average force ratio regulating device 150；Controller 110 connects peak-to-average force ratio regulating device 150.
Peak-to-average force ratio regulating device 150 receives the intermediate-freuqncy signal that low-converter 130 transmits, and will test what intermediate-freuqncy signal obtained
Mean information and peak information transfer are to controller 110；Controller 110 obtains peak-to-average force ratio according to mean information and peak information
Information, and mean value that processing target peak-to-average force ratio information and peak-to-average force ratio information obtain adjusted into information, peak-to-average force ratio is transferred to and adjusts dress
Set 150；Peak-to-average force ratio regulating device 150 adjusts information processing intermediate-freuqncy signal according to mean value, obtains M signal, and by M signal
It is transferred to upconverter 140, so that upconverter 140 exports the radio frequency letter that processing M signal obtains to power amplifier 120
Number.
Wherein, controller 110 refers to the device with signal processing and transfer function.The processing that controller 110 includes
Chip can be fpga chip, single-chip microcontroller and STM32 chip etc..Power amplifier 120 refers to that sufficiently large signal can be exported
The amplifier of power.Low-converter 130 can be used to radiofrequency signal being changed into intermediate-freuqncy signal.Upconverter 140 can be used to by
Frequency signal is changed into radiofrequency signal.Peak-to-average force ratio regulating device 150 refers to that signal mean value can be adjusted and signal peak is adjusted
Device.Intermediate-freuqncy signal refers to that low-converter carries out the signal obtained after down coversion to input signal.Mean information can be
The average power information of signal is also possible to the mean value information of voltage of signal.Peak information can be the peak power letter of signal
Breath, is also possible to the peak voltage information of signal.Peak-to-average force ratio information refers to the ratio of peak information and mean information.Target peak
It is preset target peak-to-average force ratio information than information.
Specifically, low-converter 130 carries out down-converted to original radio frequency signal is received, and exports intermediate-freuqncy signal, and
Intermediate-freuqncy signal is transferred to peak-to-average force ratio regulating device 150.Peak-to-average force ratio regulating device 150 examines the peak to average of intermediate-freuqncy signal
It surveys, obtains peak information and mean information, and peak information and mean information are transferred to controller 110.110 basis of controller
Mean information and peak information obtain peak-to-average force ratio information.110 processing target peak-to-average force ratio information of controller and peak-to-average force ratio information, obtain
Information is adjusted to mean value, and mean value adjusting information is transferred to peak-to-average force ratio regulating device 150.Wherein, target peak-to-average force ratio information can
To be the target peak-to-average force ratio information of host computer transmission, it is also possible to the target peak-to-average force ratio information that controller 110 prestores.Peak-to-average force ratio tune
Regulating device 150 adjusts information processing intermediate-freuqncy signal according to peak to average, obtains M signal, and M signal is transferred to up-conversion
Device 140.Wherein, M signal is to adjust and the signal after peak value clipping by mean value.Upconverter 140 to receiving in
Between signal carry out upconversion process, and then export the radiofrequency signal after peak-to-average force ratio optimization, and radio signal transmission put to power
Big device 120.Radiofrequency signal ingoing power amplifier 120 carries out power amplification, and then exports radio frequency amplified signal.
Further, original radio frequency signal is converted into intermediate-freuqncy signal after low-converter 130, and intermediate-freuqncy signal is passed
It is defeated by peak-to-average force ratio regulating device 150.Peak-to-average force ratio regulating device 150 detects the peak information for receiving intermediate-freuqncy signal and mean value letter
Breath, and peak information and mean information are transferred to controller 110.Controller 110 compares peak information and mean information
Value processing, obtains peak-to-average force ratio information.Controller 110 handles the target peak-to-average force ratio information of peak-to-average force ratio information and host computer transmission, obtains
Information is adjusted to mean value, and mean value adjusting information is fed back into peak-to-average force ratio regulating device 150.150 centering of peak-to-average force ratio regulating device
Frequency signal carries out the adjusting of signal mean amplitude, obtains the intermediate-freuqncy signal after mean value is adjusted；And the intermediate-freuqncy signal after adjusting mean value
Clipping is carried out, M signal (intermediate-freuqncy signal i.e. after clipping) is obtained.Signal after clipping obtains after the conversion of upconverter 140
Radiofrequency signal (the frequency phase of the frequency and original radio frequency signal of the radiofrequency signal after peak-to-average force ratio optimization after to peak-to-average force ratio optimization
Deng), and the radio signal transmission after peak-to-average force ratio is optimized is to power amplifier 120.Radiofrequency signal after peak-to-average force ratio optimization enters
Power amplifier 120 carries out power amplification, and then exports radio frequency amplified signal.
Further, controller 110 can obtain the current peak information of the intermediate-freuqncy signal after clipping, judge whether to reach
The requirement of target peak clipping.If target peak clipping requirement is not achieved in current peak information, controller 110 continues mean value tune
Section information feeds back to peak-to-average force ratio regulating device 150, so that peak-to-average force ratio regulating device 150 is equal to intermediate-freuqncy signal further progress signal
It is worth amplitude adjusted；If current peak information reaches target peak clipping requirement, signal peak-to-average ratio adjusting is completed.
In above-described embodiment, power amplifier, low-converter, upconverter and peak-to-average force ratio tune are separately connected based on controller
Regulating device.The peak information and mean information of intermediate-freuqncy signal are detected by peak-to-average force ratio regulating device；Pass through controller peak information
And mean information, peak-to-average force ratio information and processing target peak-to-average force ratio information and peak-to-average force ratio information are obtained, mean value is obtained and adjusts letter
Breath；And then peak-to-average force ratio regulating device adjusts information processing intermediate-freuqncy signal according to mean value, obtains M signal, and by the M signal
It is transferred to upconverter；Upconverter handles M signal, exports radiofrequency signal to power amplifier；Power amplifier is to radio frequency
Signal carries out power amplification, and then exports radio frequency amplified signal.Based on embodiment, input signal can be in peak-to-average force ratio regulating device
Realize that signal mean value is adjusted and signal peak clipping is realized so that output signal meets target peak-to-average force ratio in transmission process
Optimization to signal peak-to-average ratio, effectively increases that power amplifier is linear, reduced while meeting communications applications power amplifying device at
This.
In one embodiment, as shown in Fig. 2, peak-to-average force ratio regulating device 21 includes that sequentially connected mean value adjusts unit
210 and peak value adjust unit 220；Mean value adjusts unit 210 and connects low-converter；Peak value adjusts unit 220 and connects upconverter；
Controller is separately connected mean value and adjusts unit 210 and peak value adjusting unit 220.
Mean value adjusting information is transferred to by controller when detecting target peak-to-average force ratio information and peak-to-average force ratio information difference
Value adjusts unit 210；Mean value adjusts unit 210 and adjusts information processing intermediate-freuqncy signal according to mean value, obtains first M signal；?
Value adjust unit 210 by first M signal be transferred to peak value adjust unit 220, and will test first M signal obtain it is equal
Value information is transferred to controller；Peak value adjusts unit 220 and handles first M signal, obtains second M signal；Peak value is adjusted
Second M signal is transferred to upconverter by unit 220, and will test peak information transfer that second M signal obtains to
Controller.
Wherein, mean value adjusts unit and refers to the circuit unit for capableing of adjustment signal mean amplitude.Peak value adjusts unit and refers to
Be the circuit unit for capableing of adjustment signal peak amplitude.
Specifically, the connection peak value adjusting unit 220 of unit 210 is adjusted based on mean value and controller is separately connected mean value
It adjusts unit 210 and peak value adjusts unit 220.Controller is detecting target peak-to-average force ratio information and when peak-to-average force ratio information difference,
Mean value adjusting information is transferred to mean value and adjusts unit 210, and then mean value adjusting unit 210 can adjust information centering according to mean value
Frequency signal carries out mean value adjusting processing, obtain first M signal (i.e. signal mean value adjust after signal), and will be among first
Signal is transferred to peak value and adjusts unit 220.Mean value, which adjusts unit 210, can detect the mean value of first M signal, obtain in first
Between signal current mean information, and current mean information is transferred to controller.Peak value, which adjusts unit 220, believes the first centre
Number carry out peak value clipping, obtain second M signal (signal i.e. after signal peak clipping), and second M signal is transmitted
To upconverter.Peak value, which adjusts unit 220, can detect the peak value of second M signal, obtain the peak value letter of first M signal
Breath, and by peak information transfer to controller.Controller is equal according to mean information and present peak value information the calculating peak received
Than obtaining peak-to-average force ratio information；Controller carries out difference processing to target peak-to-average force ratio information and peak-to-average force ratio information, obtains mean value adjusting
Information, and mean value adjusting information is transferred to mean value and adjusts unit 210, so that the mean value adjusting continuation of unit 210 adjustment signal is equal
Value, and clipping is continued to the signal after mean value adjusting, until target peak-to-average force ratio information is identical as peak-to-average force ratio information.And then pass through
The exportable signal for optimizing peak-to-average force ratio of the power amplification device of the present embodiment.
In a specific embodiment, as shown in figure 3, it includes ATT (Attenuation, decaying that mean value, which adjusts unit 31,
Device) electricity adjust attenuator circuit 310 and connect ATT electricity tune attenuator circuit 310 the first mean value detecting circuit 320.The decaying of ATT electricity tune
One end of circuit 310 connects low-converter, and the other end connects controller；One end of first mean value detecting circuit 320 connects peak value
Unit is adjusted, the other end connects controller.
ATT electricity tune attenuator circuit 310 adjusts information processing intermediate-freuqncy signal according to mean value and obtains first M signal, and by the
One M signal is transferred to the first mean value detecting circuit 320；First mean value detecting circuit 320 detection first M signal obtains
Value information, and mean information is transferred to controller.
Wherein, refer to being capable of electricity to attenuated input signal to certain scalar multiple for ATT electricity tune attenuator circuit 310
Road.By 310 adjustment signal size of ATT electricity tune attenuator circuit and attenuation, and then it can realize the mean value adjusting to signal.First
Mean value detecting circuit 320 refers to the circuit for being able to detect signal mean value.Preferably, the first mean value detecting circuit 320 can be
By the exportable mean value detectable voltage signals of mean value detecting circuit, and then current mean information can be obtained in mean value detecting circuit.
Specifically, the first mean value detecting circuit 320 is connected based on ATT electricity tune attenuator circuit 310；Controller is separately connected
ATT electricity tune attenuator circuit 310 and the first mean value detecting circuit 320.ATT electricity tune attenuator circuit 310 transmits equal according to controller
Value adjusts information, carries out mean value adjusting to the intermediate-freuqncy signal of input, (first M signal is as equal for output first M signal
Signal after value adjusting), and first M signal is transferred to the first mean value detecting circuit 320.First mean value detecting circuit 320
Mean value detection is carried out to first M signal, obtains mean information, and mean information is transferred to controller.
In a specific embodiment, as shown in figure 4, peak value adjust unit 41 include peak value amplitude limiter circuit 410 and
Connect the first peak detection circuit 420 of peak value amplitude limiter circuit 410.Peak value amplitude limiter circuit 410 connects mean value and adjusts unit；First
One end of peak detection circuit 420 connects upconverter, and the other end connects controller.
Peak value amplitude limiter circuit 410 handles first M signal and obtains second M signal, and second M signal is transmitted
To the first peak detection circuit 420；First peak detection circuit 420 will test second M signal and obtain peak information, and will
Peak information transfer is to controller.
Wherein, refer to can be to the circuit of input signal clipping for peak value amplitude limiter circuit 410.Peak value amplitude limiter circuit 410
Clipping device can be diode, be also possible to voltage-stabiliser tube.First peak detection circuit 420 refers to being able to detect signal peak
Circuit.Preferably, the first peak detection circuit 420 can be peak-detector circuit, pass through the exportable peak of peak-detector circuit
It is worth detectable voltage signals, and then peak information can be obtained.
Specifically, the first peak detection circuit 420 is connected based on peak value amplitude limiter circuit 410；Controller is separately connected peak value
Amplitude limiter circuit 410 and the first peak detection circuit 420.The first M signal of 410 pairs of peak value amplitude limiter circuit inputs carries out peak value
Clipping, output second M signal (second M signal is the signal after peak value is adjusted), and second M signal is passed
It is defeated by the first peak detection circuit 420.First peak detection circuit 420 carries out peak detection to second M signal, obtains peak
Value information, and by peak information transfer to controller.
Based on the present embodiment, input signal can adjust in mean value and realize that signal mean value is adjusted in unit transmission process；?
Peak value, which is adjusted, realizes signal peak clipping in unit transmission process, so that output signal meets target peak-to-average force ratio, realization pair
The optimization of signal peak-to-average ratio, effectively increases that power amplifier is linear, and power amplifying device is reduced while meeting communications applications
Cost.
In one embodiment, as shown in figure 5, providing a kind of power amplification device.Wherein, peak-to-average force ratio regulating device 51
It further include the peak to average detection unit 510 being connected between low-converter and mean value adjusting unit 520；Peak to average detection unit
510 connection controllers.
Peak to average detection unit 510 detects intermediate-freuqncy signal, obtains initial mean value information and initial spike information, and
Initial mean value information and initial spike information are transferred to controller；Controller is believed according to initial mean value information and initial spike
Breath, obtains initial peak-to-average force ratio information.
Wherein, peak to average detection unit 510 refers to the circuit unit for being able to detect signal peak and signal mean value.
Specifically, peak to average detection unit 510 can carry out peak-to-average force ratio detection to the intermediate-freuqncy signal received, obtain initial equal
Value information and initial spike information, and initial mean value information and initial spike information are transferred to controller, and then controller pair
Initial mean value information and initial spike information carry out ratio proccessing, obtain initial peak-to-average force ratio information.And then controller will handle mesh
The initial mean value that mark peak-to-average force ratio information and initial peak-to-average force ratio information obtain adjusts information, is transferred to mean value and adjusts unit 520, so that
Mean value adjusts unit 520 and carries out initial mean value adjusting to intermediate-freuqncy signal according to initial mean value adjusting information；So that peak value is adjusted
Signal after unit 530 adjusts initial mean value carries out peak value clipping.For example, controller can to target peak-to-average force ratio information and just
It makes the difference between beginning peak-to-average force ratio information, according to the difference between target peak-to-average force ratio information and initial peak-to-average force ratio information, obtains initial equal
Value adjusts information.
It should be noted that mean value adjusts unit can adjust information according to initial mean value, right when signal is initially adjusted
The intermediate-freuqncy signal of input carries out mean value adjusting.After signal is initially adjusted, mean value adjusts unit can be according to current mean value tune
Information is saved, mean value adjusting is carried out to the intermediate-freuqncy signal of input.
In a specific embodiment, as shown in fig. 6, peak to average detection unit 61 includes the second peak detection circuit
610 and connect the second peak detection circuit 610 the second mean value detecting circuit 620；One end of second peak detection circuit 610
Low-converter is connected, the other end connects controller；One end connection mean value of second mean value detecting circuit 620 adjusts unit, another
End connection controller.
Second peak detection circuit 610 detects intermediate-freuqncy signal, obtains initial spike information；Second mean value detection electricity
Intermediate-freuqncy signal is detected on road 620, obtains initial mean value information.
Wherein, the second peak detection circuit 610 refers to the circuit for being able to detect signal peak.Preferably, the second peak value
Detection circuit 610 can be peak-detector circuit, by the exportable peak detection voltage signal of peak-detector circuit, and then can obtain
To initial spike information.Second mean value detecting circuit 620 refers to the circuit for being able to detect signal mean value.Preferably, second
Value detection circuit 620 can be mean value detecting circuit, pass through the exportable mean value detectable voltage signals of mean value detecting circuit, Jin Erke
Obtain initial mean value information.
It should be noted that in practical applications, peak-detector circuit may include peak detection pipe and corresponding auxiliary electricity
Road, mean value detecting circuit may include corresponding mean value detection tube and corresponding auxiliary circuit.
Specifically, the second mean value detecting circuit 620 is connected based on the second peak detection circuit 610；Controller is separately connected
Second peak detection circuit 610 and the second mean value detecting circuit 620.Second peak detection circuit 610 transmits low-converter
Intermediate-freuqncy signal carries out peak detection, obtains initial spike information, and initial spike information is transferred to controller.The inspection of second mean value
Slowdown monitoring circuit 620 carries out mean value detection to intermediate-freuqncy signal, obtains initial mean value information, and initial mean value information is transferred to control
Device.Controller handles initial spike information and initial mean value information, and then initial peak-to-average force ratio information can be obtained, for example, controller
The ratio of initial spike information and initial mean value information can be calculated, and then obtains initial peak-to-average force ratio information.
In one embodiment, as shown in fig. 7, providing a kind of power amplification device.Wherein, peak-to-average force ratio regulating device 71
It further include being connected to the regeneration frequency spectrum that peak value is adjusted between unit 730 and upconverter to filter out unit 740.
Wherein, regeneration frequency spectrum filters out the circuit unit that unit 740 refers to filter out the regeneration frequency spectrum of signal.
Specifically, regeneration frequency spectrum filter out unit 740 to the second M signal received carry out regeneration frequency spectrum filter out, in turn
Third M signal is obtained, and third M signal is transferred to upconverter.
Further, regeneration frequency spectrum, which filters out unit 740, to filter out the non-linear spectrum in second M signal, and only defeated
The signal (i.e. third M signal) of Carrier section out.
Preferably, it is intermediate-frequency filter that regeneration frequency spectrum, which filters out unit 740,.Wherein, high degree of suppression can be selected in intermediate-frequency filter
Intermediate-frequency filter.
Based on the present embodiment, unit is filtered out by regeneration frequency spectrum and is connected between peak value adjusting unit and upconverter.It can
It realizes that carrying out regeneration frequency spectrum to second M signal (signal i.e. after peak-to-average force ratio optimization) filters out, and then can be obtained the of High Linear
Three M signals, it is linear to improve power amplifier, reduces power amplifier cost.
In one embodiment, as shown in figure 8, providing a kind of power amplification device.Including being separately connected power amplification
Device 820, low-converter 830, upconverter 840 controller 810；And be connected to low-converter 830 and upconverter 840 it
Between peak-to-average force ratio regulating device 850；Controller 810 connects peak-to-average force ratio regulating device 850；Peak-to-average force ratio regulating device includes successively connecting
Peak to average detection unit 852, the mean value connect adjusts unit 854, peak value adjusts unit 856 and regeneration frequency spectrum filters out unit 858；
Peak to average detection unit 852 connects low-converter 830, and regeneration frequency spectrum filters out unit 858 and connects upconverter 840；Wherein, it also wraps
Include local vibration source 860.Local vibration source 860 is separately connected controller 810, low-converter 830 and upconverter 840.
Controller 810 controls local vibration source 860 and exports the first local oscillation signal to down coversion according to preset carrier wave frequency information
Device 830, so that low-converter 830 is according to the first local oscillation signal to input signal down coversion；Controller 810 is believed according to carrier frequency
Breath, control local vibration source 860 export the second local oscillation signal to upconverter 840, so that upconverter 840 is according to the second local oscillation signal
To M signal up-conversion.
Wherein, local vibration source 860 refers to generate the device of local oscillation signal.Local vibration source 860 can be local oscillator.
Specifically, controller 810, low-converter 830 are separately connected based on local vibration source 860.Controller 810 can be according to upper
The carrier wave frequency information of machine transmission, control local vibration source 860 exports the first local oscillation signal, and the first local oscillation signal is transferred to lower change
Frequency device 830.And then local vibration source 860 can provide the signal of corresponding local frequency for low-converter 830, so that low-converter 830
According to the first local oscillation signal to input signal down coversion.Controller 810, upconverter 840 are separately connected based on local vibration source 860.Control
The carrier wave frequency information that device 810 processed can be transmitted according to host computer, control local vibration source 860 export the second local oscillation signal, and by second
Local oscillation signal is transferred to upconverter 840.And then local vibration source 860 can provide the signal of corresponding local frequency for upconverter 840,
So that upconverter 840 is according to the second local oscillation signal to input signal up-conversion.
It should be noted that the peak to average detection unit 852 of the present embodiment, mean value adjust unit 854, peak value adjusts unit
856 and regeneration frequency spectrum filter out the course of work of unit 858 and can refer to the course of work of the corresponding unit of above-mentioned other embodiments,
Details are not described herein.
In a specific example, by taking the power amplification device in the broadband 2.6GHz as an example, wherein the radiofrequency signal of input
Frequency is 2655MHz (megahertz), and the local oscillation signal frequency of local vibration source output is 2470.68MHz.Power amplification device it is specific
The course of work are as follows:
1, controller obtains the carrier wave frequency information (radio frequency signal frequency 2655MHz) of host computer transmission, controls local oscillator
Source output frequency is the local oscillation signal of 2470.68MHz, and respectively by local oscillation signal (the first local oscillation signal and the second local oscillation signal)
It is transferred to low-converter and upconverter；
2, low-converter is passed through in the radiofrequency signal input that frequency is 2655MHz, is converted into the intermediate-freuqncy signal of 184.32MHz；
3, frequency is that the intermediate-freuqncy signal of 184.32MHz enters peak to average detection unit, is detected by peak to average detection unit
The peak information and mean information of intermediate-freuqncy signal read the peak information and the equal information by controller；
4, mean value being transferred to by the intermediate-freuqncy signal that peak to average detects and adjusting unit, unit adjustment signal is adjusted by mean value
Mean value obtains first M signal, and the current mean information that will test is transferred to controller；
5, enter peak value through mean value first M signal adjusted and adjust unit, adjusting unit by peak value will be in first
Between the peak value of signal carry out default attenuation (such as 1.5dB) decaying, obtain second M signal, and what be will test works as leading peak
Value information is transferred to controller；
6, controller judges whether to reach preset signal peak clipping according to current mean information and present peak value information
It is required that returning to step 4 if preset signal peak clipping requirement is not achieved and continuing to execute suddenly；
7, the second M signal after peak value is adjusted, which enters spectral re-growth and filters out unit and carry out regeneration frequency spectrum, to be filtered out, and obtains the
Three M signals；
8, the third M signal after filtering out regeneration frequency spectrum is converted into the radiofrequency signal of 2.655MHz through upconverter, passes through
Power amplifier amplifies output to radiofrequency signal, obtains radio frequency amplified signal.
Based on the present embodiment, radiofrequency signal is inputted to the power amplification device of the present embodiment, exportable signal peak-to-average ratio is excellent
Radiofrequency signal after change, reduces signal peak-to-average ratio, improves that power amplifier is linear, and the power amplification device of the present embodiment is at low cost
It is honest and clean.
In one embodiment, as shown in figure 9, providing a kind of signal processing method, comprising the following steps:
Step S910 obtains peak-to-average force ratio information according to mean information and peak information.
Step S920, processing target peak-to-average force ratio information and peak-to-average force ratio information obtain mean value and adjust information, and mean value is adjusted
Information is transferred to peak-to-average force ratio regulating device；Mean value, which adjusts information and is used to indicate peak-to-average force ratio regulating device processing intermediate-freuqncy signal, to be obtained
Between signal, and M signal is transferred to upconverter.
Specifically, input signal is converted into intermediate-freuqncy signal after low-converter；Peak-to-average force ratio regulating device detects intermediate frequency letter
Number peak information and mean information, and peak information and mean information are transferred to controller.Controller is according to mean information
And peak information, obtain peak-to-average force ratio information；The preset target peak-to-average force ratio information of controller processing and peak-to-average force ratio information, obtain mean value
Information is adjusted, and mean value adjusting information is transferred to peak-to-average force ratio regulating device；Peak-to-average force ratio regulating device adjusts information according to mean value
Intermediate-freuqncy signal is handled, obtains M signal, and the M signal is transferred to upconverter；Upconverter handles M signal,
Radiofrequency signal is exported to power amplifier；Power amplifier carries out power amplification to radiofrequency signal, and then exports radio frequency amplification letter
Number.Based on the present embodiment, input signal can realize the adjusting of signal mean value and signal in peak-to-average force ratio regulating device transmission process
Peak value clipping realizes the optimization to signal peak-to-average ratio, effectively increases power amplifier so that output signal meets target peak-to-average force ratio
Linearly, the cost of power amplifying device is reduced while meeting communications applications.
It should be understood that although each step in the flow chart of Fig. 9 is successively shown according to the instruction of arrow, this
A little steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these steps
It executes there is no the limitation of stringent sequence, these steps can execute in other order.Moreover, at least part in Fig. 9
Step may include that perhaps these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage, which is also not necessarily, successively to be carried out,
But it can be executed in turn or alternately at least part of the sub-step or stage of other steps or other steps.
In one embodiment, as shown in Figure 10, a kind of signal processing apparatus is provided, comprising:
Peak-to-average force ratio information acquisition unit 102, for obtaining peak-to-average force ratio information according to mean information and peak information.
Peak-to-average force ratio adjusts unit 104, adjusts unit for peak-to-average force ratio, believes for processing target peak-to-average force ratio information and peak-to-average force ratio
Breath obtains mean value and adjusts information, and mean value adjusting information is transferred to peak-to-average force ratio regulating device；Mean value adjusts information and is used to indicate
Peak-to-average force ratio regulating device processing intermediate-freuqncy signal obtains M signal, and M signal is transferred to upconverter.
Specific about signal processing apparatus limits the restriction that may refer to above for signal processing method, herein not
It repeats again.Modules in said signal processing device can be realized fully or partially through software, hardware and combinations thereof.On
Stating each module can be embedded in the form of hardware or independently of in the controller in power amplification device, can also deposit in a software form
It is stored in the controller in power amplification device, executes the corresponding operation of the above modules in order to which controller calls.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
According to mean information and peak information, peak-to-average force ratio information is obtained；
Processing target peak-to-average force ratio information and peak-to-average force ratio information obtain mean value and adjust information, and mean value is adjusted information transmission
Give peak-to-average force ratio regulating device；Mean value adjusting information is used to indicate peak-to-average force ratio regulating device processing intermediate-freuqncy signal and obtains M signal,
And M signal is transferred to upconverter.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the stream of the embodiment of above-mentioned each division operation method
Journey.Wherein, to any of memory, storage, database or other media used in each embodiment provided herein
Reference, may each comprise non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), can
Programming ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory
It may include random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is with a variety of shapes
Shi Ke get, such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram
(DDRSDRAM), enhanced SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus
(Rambus) direct RAM (RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram
(RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of power amplification device, which is characterized in that including being separately connected power amplifier, low-converter, upconverter
Controller, and the peak-to-average force ratio regulating device being connected between the low-converter and the upconverter；The controller connects
Connect the peak-to-average force ratio regulating device；
The peak-to-average force ratio regulating device receives the intermediate-freuqncy signal of the low-converter transmission, and will test the intermediate-freuqncy signal and obtain
Mean information and peak information transfer give the controller；
The controller obtains peak-to-average force ratio information according to the mean information and the peak information, and processing target peak is equal
The mean value obtained than information and the peak-to-average force ratio information adjusts information, is transferred to the peak-to-average force ratio regulating device；
Peak-to-average force ratio regulating device intermediate-freuqncy signal according to mean value adjusting information processing, obtains M signal, and will
The M signal is transferred to the upconverter, so that the upconverter is managed in described to the power amplifier output
Between the obtained radiofrequency signal of signal.
2. power amplification device according to claim 1, which is characterized in that the peak-to-average force ratio regulating device includes successively connecting
The mean value connect adjusts unit and peak value adjusts unit；The mean value adjusts unit and connects the low-converter；The peak value is adjusted
Unit connects the upconverter；The controller is separately connected the mean value and adjusts unit and peak value adjusting unit；
The controller is adjusted the mean value when detecting the target peak-to-average force ratio information and the peak-to-average force ratio information difference
Information is transferred to the mean value and adjusts unit；
The mean value adjusts unit intermediate-freuqncy signal according to mean value adjusting information processing, obtains first M signal；Institute
It states mean value adjusting unit and the first M signal is transferred to the peak value adjusting unit, and will test letter among described first
Number obtained mean information is transferred to the controller；
The peak value adjusts first M signal described in cell processing, obtains second M signal；The peak value adjusts unit will
The second M signal is transferred to the upconverter, and will test the peak information that the second M signal obtains
It is transferred to the controller.
3. power amplification device according to claim 2, which is characterized in that it includes ATT electricity tune that the mean value, which adjusts unit,
First mean value detecting circuit of attenuator circuit and the connection ATT electricity tune attenuator circuit；
One end of the ATT electricity tune attenuator circuit connects the low-converter, and the other end connects the controller；Described first
The one end for being worth detection circuit connects the peak value and adjusts unit, and the other end connects the controller；
ATT electricity tune attenuator circuit intermediate-freuqncy signal according to mean value adjusting information processing obtains letter among described first
Number, and the first M signal is transferred to first mean value detecting circuit；
First mean value detecting circuit detects the first M signal and obtains the mean information, and by the mean information
It is transferred to the controller.
4. power amplification device according to claim 2, which is characterized in that it includes peak value clipping that the peak value, which adjusts unit,
First peak detection circuit of circuit and the connection peak value amplitude limiter circuit；
The peak value amplitude limiter circuit connects the mean value and adjusts unit；On one end connection of first peak detection circuit is described
Frequency converter, the other end connect the controller；
The peak value amplitude limiter circuit handles the first M signal and obtains the second M signal, and will be among described second
Signal is transferred to first peak detection circuit；
First peak detection circuit will test the second M signal and obtain the peak information, and the peak value is believed
Breath is transferred to the controller.
5. power amplification device according to claim 2, which is characterized in that the peak-to-average force ratio regulating device further includes connection
The peak to average detection unit between unit is adjusted in the low-converter and the mean value；The peak to average detection unit connects institute
State controller；
The peak to average detection unit detects the intermediate-freuqncy signal, obtains initial mean value information and initial spike information,
And the initial mean value information and the initial spike information are transferred to the controller；
The controller obtains initial peak-to-average force ratio information according to the initial mean value information and the initial spike information.
6. power amplification device according to claim 5, which is characterized in that the peak to average detection unit includes the second peak
It is worth the second mean value detecting circuit of detection circuit and connection second peak detection circuit；
One end of second peak detection circuit connects the low-converter, and the other end connects the controller；Described second
One end of mean value detecting circuit connects the mean value and adjusts unit, and the other end connects the controller；
Second peak detection circuit detects the intermediate-freuqncy signal, obtains the initial spike information；
Second mean value detecting circuit detects the intermediate-freuqncy signal, obtains the initial mean value information.
7. power amplification device according to claim 2, which is characterized in that the peak-to-average force ratio regulating device further includes connection
The regeneration frequency spectrum between unit and the upconverter, which is adjusted, in the peak value filters out unit.
8. power amplification device according to claim 7, which is characterized in that the regeneration frequency spectrum filters out unit as intermediate frequency filter
Wave device.
9. according to claim 1 to power amplification device described in 8 any one, which is characterized in that further include local vibration source；
The local vibration source is separately connected the controller, the low-converter and the upconverter；
The controller controls the local vibration source and exports the first local oscillation signal to the lower change according to preset carrier wave frequency information
Frequency device, so that the low-converter exports the intermediate-freuqncy signal according to first local oscillation signal；
The controller controls the local vibration source and exports the second local oscillation signal to the up-conversion according to the carrier wave frequency information
Device, so that the upconverter exports the radiofrequency signal according to second local oscillation signal.
10. a kind of signal processing method, which comprises the following steps:
According to mean information and peak information, peak-to-average force ratio information is obtained；
Processing target peak-to-average force ratio information and the peak-to-average force ratio information obtain mean value and adjust information, and the mean value is adjusted information
It is transferred to peak-to-average force ratio regulating device；The mean value adjusts information and is used to indicate the peak-to-average force ratio regulating device processing intermediate frequency letter
Number M signal is obtained, and the M signal is transferred to upconverter.
11. a kind of signal processing apparatus characterized by comprising
Peak-to-average force ratio information acquisition unit, for obtaining peak-to-average force ratio information according to mean information and peak information；
Peak-to-average force ratio adjusts unit, is used for processing target peak-to-average force ratio information and the peak-to-average force ratio information, obtains mean value and adjusts information, and
Mean value adjusting information is transferred to peak-to-average force ratio regulating device；The mean value adjusts information and is used to indicate the peak-to-average force ratio adjusting
The device processing intermediate-freuqncy signal obtains M signal, and the M signal is transferred to upconverter.
12. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of signal processing method described in claim 10 is realized when being executed by processor.
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