CN107948116A - Power amplifier device based on polarization modulation - Google Patents
Power amplifier device based on polarization modulation Download PDFInfo
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- CN107948116A CN107948116A CN201711046063.0A CN201711046063A CN107948116A CN 107948116 A CN107948116 A CN 107948116A CN 201711046063 A CN201711046063 A CN 201711046063A CN 107948116 A CN107948116 A CN 107948116A
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- power amplifier
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- subelement
- quantization error
- amplifier module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
A kind of power amplifier device based on polarization modulation provided in an embodiment of the present invention, the power amplifier device include：Decoder, shake maker and power amplifier module, the decoder is used to obtain the quantization error of the power amplifier module according to the range signal of modulated signal to be launched and the resolution ratio of the power amplifier module, and the quantization error is sent to the shake maker；The shake maker is used to generate second control signal according to the quantization error, and the second control signal is sent to the power amplifier module；The power amplifier module is used to eliminate quantization error according to second control signal generation dither signal, to complete the amplification to the modulated signal to be launched.Maker is shaken by increasing, and controls power amplifier module to produce dither signal according to quantization error using maker is shaken, eliminates quantization error, improves the resolution ratio of power amplifier device in the case where only increasing a power amplifier subelement, it is simple in structure.
Description
Technical field
The present embodiments relate to field of communication technology, more particularly, to a kind of power amplification based on polarization modulation
Device.
Background technology
In recent years, as continuous improvement of the people to traffic rate demand, wireless communication system are had in limited band
Meet this demand of people under width, this modulation system for resulting in system becomes increasingly complex, and the peak of corresponding modulated signal is equal
Than also higher and higher.Traditional Linear Power Amplifier can only meet big amplitude for the signal of high peak-to-average power ratio by back-off
Conversion.Can so power amplification efficiency be caused to drastically reduce.For this reason, it has been proposed that linearly put using switching mode nonlinear power amplifier to realize
Greatly.Nonlinear power amplifier is operated in two states of switch, has very high efficiency.Nonlinear power amplifier is usually using polarization modulation side
Formula.
In the typically nonlinear power amplifier scheme using polarization modulation mode, power amplifier is single by a series of power amplifier in parallel
Member is formed, and is controlled whether power amplifier subelement works by the value of a decoder.I, Q two paths of signals of base band are first converted into amplitude
And phase signal.Break-make of the phase signal as drive signal driving switch type nonlinear power amplifier；Range signal then passes through decoding
The number of the power amplifier subelement of work is controlled afterwards.The number of the power amplifier subelement of work is different so that output driving current size
Change, also just generates the signal of different amplitudes.
The above-mentioned power amplification system based on polarization modulation, amplitude modulation accuracy depend on the number of power amplifier subelement, and number is got over
More, changes in amplitude is finer, also more accurate.But subelement number is more, control module will be more complicated, reduces overall
Efficiency；And more subelements is also more difficult to guarantee uniformity.
The content of the invention
An embodiment of the present invention provides it is a kind of overcome the above problem or solve the above problems at least in part based on pole
Change the power amplifier device of modulation.
An embodiment of the present invention provides a kind of power amplifier device based on polarization modulation, the power amplifier device bag
Include：Decoder, shake maker and power amplifier module, and the decoder, the shake maker and the power amplifier module three
It is sequentially connected；Wherein,
The decoder is used to be generated according to the range signal of modulated signal to be launched and the resolution ratio of the power amplifier module
First control signal, and the power amplifier is obtained according to the range signal of modulated signal to be launched and the resolution ratio of the power amplifier module
The quantization error of module, and the first control signal is sent to the power amplifier module, the quantization error is sent to institute
State shake maker；
The shake maker is used to generate second control signal according to the quantization error, and the described second control is believed
Number send to the power amplifier module；
Amplification factor of the power amplifier module for controlling the power amplifier module according to the first control signal, and according to
The second control signal produces dither signal and quantization error is eliminated, to complete to put the modulated signal to be launched
Greatly.
Wherein, the power amplifier module includes at least two power amplifier subelements, and between at least two power amplifiers subelement
It is in parallel；The shake maker is connected with any one power amplifier subelement at least two power amplifiers subelement, for inciting somebody to action
The second control signal is sent to any one described power amplifier subelement, to control the logical of any one power amplifier subelement
It is disconnected.
Wherein, the decoder is connected respectively with other power amplifier subelements at least two power amplifiers subelement, is used
In other power amplifier subelements being respectively sent to the first control signal at least two power amplifiers subelement, with control
The break-make of other power amplifier subelements, and then control the amplification factor of power amplifier module.
Wherein, when the second control signal is high level, any one power amplifier subelement conducting；When described
When two control signals are low level, any one power amplifier subelement shut-off.
Wherein, the shake maker includes look-up table and counter；Wherein,
The cycle corresponding counter that the look-up table is used to obtain the dither signal according to the quantization error counts
Number, and the corresponding counter of any one power amplifier subelement ON time described within the cycle of the dither signal count
Number, and send to the counter；
The counter is used for the cycle corresponding counter counts according to the dither signal, and is trembled described
The corresponding counter counts output described second of any one power amplifier subelement ON time described in the cycle of dynamic signal
Control signal.
Wherein, quantization error counter counts corresponding with the cycle of the dither signal are stored with the look-up table
Correspondence between counting for several times, and the quantization error and any one described power amplifier within the cycle of the dither signal
Correspondence between the corresponding counter counts of subelement ON time.
Wherein, the quantization error, the cycle of the dither signal corresponding counter counts and trembled described
Meet in the cycle of dynamic signal between the corresponding counter counts three of any one described power amplifier subelement ON time
Following relation：
Wherein, A2For quantization error, Δ A is the power amplifier module resolution ratio, k1For in the cycle of a dither signal
Any one interior described corresponding counter counts of power amplifier subelement ON time, k1+k2For the cycle of the dither signal
Corresponding counter counts, and k1、k2For integer, if k1、k2Value above-mentioned formula both sides can not be made equal, then k1、k2
Take the value of the absolute value minimum for the difference for making above-mentioned formula both sides.
Wherein, the cycle of the dither signal corresponding counter counts k1+k2Cannot be infinitely great.
Wherein, the power amplifier device further includes wave filter, the input terminal of the wave filter and the power amplifier module
Output terminal connects, and the amplified modulated signal to be launched for being exported to the power amplifier module carries out bandpass filtering.
Wherein, the power amplifier device further includes drive module, the output terminal of the drive module and the power amplifier mould
The input terminal connection of block, the drive module are used to be driven the power amplifier module.
A kind of power amplifier device based on polarization modulation provided in an embodiment of the present invention, shakes maker by increasing,
And control power amplifier module to produce dither signal according to quantization error using maker is shaken, quantization error is eliminated, is only increasing by one
Improve the resolution ratio of power amplifier device in the case of a power amplifier subelement, it is simple in structure.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of the power amplifier device based on polarization modulation provided in an embodiment of the present invention；
Fig. 2 is the structure diagram that maker is shaken in the embodiment of the present invention；
Fig. 3 is the structure diagram of another power amplifier device based on polarization modulation provided in an embodiment of the present invention；
Fig. 4 is to carry out Matlab emulation to amplifying device described in Fig. 3 in the embodiment of the present invention, works as k1Each pass is obtained when=0
The output waveform figure of key point；
Fig. 5 is to carry out Matlab emulation to amplifying device described in Fig. 3 in the embodiment of the present invention, works as k1=k2Obtained when=1 each
The output waveform figure of key point；
Fig. 6 is to carry out Matlab emulation to amplifying device described in Fig. 3 in the embodiment of the present invention, works as k1=1, k2Obtained when=3
The output waveform figure of each key point.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention
Part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, belong to the scope of protection of the invention.
Fig. 1 is a kind of structure diagram of the power amplifier device based on polarization modulation provided in an embodiment of the present invention, such as
Shown in Fig. 1, the power amplifier device includes：Decoder 1, shake maker 2 and power amplifier module 3, and the decoder 1, institute
State shake maker 2 and 3 three of the power amplifier module is sequentially connected.Wherein：
The decoder 1 is used to be given birth to according to the range signal of modulated signal to be launched and the resolution ratio of the power amplifier module 3
Into first control signal, and described in the resolution ratio acquisition of the range signal and the power amplifier module 3 according to modulated signal to be launched
The quantization error of power amplifier module 3, and the first control signal is sent to the power amplifier module 3, the quantization error is sent out
Send to the shake maker 2.The shake maker 2 is used to generate second control signal according to the quantization error, and will
The second control signal is sent to the power amplifier module 3.The power amplifier module 3 is used to be controlled according to the first control signal
The amplification factor of the power amplifier module 3, and dither signal is produced according to the second control signal quantization error is eliminated,
To complete the amplification to the modulated signal to be launched.
Wherein, the resolution ratio of power amplifier module 3 refers to the corresponding input range value of each power amplifier subelement in power amplifier module 3,
Each the corresponding input range value of power amplifier subelement is determined by the number of power amplifier subelement, its elementary tactics is to ensure whole work(
Put and input signal amplitude institute attainable maximum is represented when subelement all turns on, by input signal maximum at this time divided by entirely
The number of the power amplifier subelement of portion's conducting, is exactly the corresponding input range value of each power amplifier subelement.The number of power amplifier subelement
More, corresponding input range value is smaller, and the resolution ratio of corresponding power amplifier module 3 is higher.The quantization error of power amplifier module 3 refers to
The difference of the actual margin of modulated signal to be launched amplitude summation corresponding with the power amplifier subelement for the conducting that decoder 1 is controlled
Value.
It is existing based on the power amplifier device of polarization modulation to modulated signal into line amplitude amplify when, if exist quantify miss
Difference, it is necessary to the resolution ratio of power amplifier module 3 is improved by increasing the number of power amplifier subelement, so that eliminating quantization error.
But power amplifier number sub-cells are more, corresponding control module is more complicated, and power amplifier device whole efficiency is low.For this reason, this
Inventive embodiments provide technical solution be：In the case of power amplifier subelement number is not increased, increase shake maker 1, in work(
Dither signal is produced in amplification module 3 so that quantization error is reduced or eliminated.
Specifically, described device further includes signal input module 7 and polar coordinates signal generator 6, and signal input module 7 is used
In the modulated signal that input needs to launch, which represents usually using cartesian coordinate, includes orthogonal I, Q two paths of signals.
Polar coordinates signal generator 6 is used to the signal represented under cartesian coordinate being converted to polar coordinate representation.Decoder is by polar coordinates
The range signal for the modulated signal to be launched that signal generator 6 is sent is corresponding with the power amplifier subelement for the conducting that decoder is controlled
Amplitude summation compare, obtain the power amplifier subelement for the conducting that the range signal of modulated signal to be launched and decoder are controlled
Difference between corresponding amplitude summation, the difference are quantization error.In practical operation, power amplifier of decoder control is single
The quantity of member needs to be determined according to the range signal of modulated signal to be launched.
Quantization error is sent into shake maker again, shake maker generates second according to the size of the quantization error
Control signal, then the second control signal is sent into power amplifier module, power amplifier module is trembled according to second control signal generation
Signal is moved to eliminate quantization error.Whole process namely shakes maker and controls power amplifier module to produce shake according to quantization error
Signal eliminates the process of quantization error.In this process, without increasing the quantity of power amplifier subelement so that apparatus structure letter
It is single.
A kind of power amplifier device based on polarization modulation provided in an embodiment of the present invention, shakes maker by increasing,
And control power amplifier module to produce dither signal according to quantization error using maker is shaken, quantization error is eliminated, is only increasing by one
Improve the resolution ratio of power amplifier device in the case of a power amplifier subelement, it is simple in structure.
Based on above-described embodiment, as shown in Figure 1, the power amplifier module includes at least two power amplifier subelements, and it is described extremely
It is in parallel between few two power amplifier subelements；The shake maker and any one work(at least two power amplifiers subelement
Subelement connection is put, for sending the second control signal to any one described power amplifier subelement, to control described appoint
The break-make of one power amplifier subelement of meaning.
Specifically, the quantity of the power amplifier subelement in power amplifier module need to be determined according to the range value of modulated signal to be launched.
When amplifying device provided in an embodiment of the present invention is frequently used for being amplified the modulated signal to be launched of a certain amplitude range,
The power amplifier subelement of fair amount can be correspondingly arranged.
Shake maker need to be only connected with a power amplifier subelement in power amplifier module, it is understood that be shake generation
Device need to only control a power amplifier subelement in power amplifier module to generate dither signal, to eliminate quantization error.In specific implementation,
Shake maker produces dither signal according to the first control information by controlling the break-make of connected power amplifier subelement, should
Dither signal is again with the output Signal averagings of other each power amplifier subelements in parallel to eliminate quantization error.
The embodiment of the present invention controls any one power amplifier in power amplifier module by shaking maker according to second control signal
The break-make of submodule eliminates quantization error in the case where not increasing power amplifier number sub-cells to produce dither signal, improves work(
The resolution ratio of rate amplifying device.
Based on above-described embodiment, the decoder and other power amplifier subelements point at least two power amplifiers subelement
Do not connect, other power amplifiers for being respectively sent to the first control signal at least two power amplifiers subelement is single
Member, to control the break-make of other power amplifier subelements.
Based on above-described embodiment, when the second control signal is high level, any one described power amplifier subelement is led
It is logical；When the second control signal is low level, any one power amplifier subelement shut-off.
Based on above-described embodiment, as shown in Fig. 2, the shake maker includes look-up table 21 and counter 22.Wherein：
The look-up table 21 is used for the cycle corresponding counter counts that the dither signal is obtained according to the quantization error
Count for several times, and any one described corresponding counter counts of power amplifier subelement ON time within the cycle of the dither signal
Count, and sent to the counter for several times.The counter 22 is used for the cycle corresponding counter according to the dither signal
Counts, and any one described corresponding counter of power amplifier subelement ON time within the cycle of the dither signal
Counts export the second control signal.
Based on above-described embodiment, the cycle that the quantization error is stored with the look-up table with the dither signal is corresponding
Counter counts between correspondence, and the quantization error appoints with described within the cycle of the dither signal
Correspondence between the corresponding counter counts of a power amplifier subelement ON time of anticipating.
By prestoring the correspondence in a lookup table, the power amplifier can be made in practical work process
In it is more efficient.
Based on above-described embodiment, the quantization error, the cycle of the dither signal corresponding counter counts with
And any one described corresponding counter counts three of power amplifier subelement ON time within the cycle of the dither signal
Meet following relation between person：
Wherein, A2For quantization error, Δ A is the power amplifier module resolution ratio, k1For in the cycle of a dither signal
Any one interior described corresponding counter counts of power amplifier subelement ON time, k1+k2For the cycle of the dither signal
Corresponding counter counts, and k1、k2For integer, if k1、k2Value above-mentioned formula both sides can not be made equal, then k1、k2
Take the value of the absolute value minimum for the difference for making above-mentioned formula both sides.
Specifically, the carrier frequency for remembering modulated signal to be launched is ωc, carrier cycle T, phase φ.Then with it is described
Any one the power amplifier subelement work make and break period for shaking maker connection is (k1+k2) T, wherein, any one described power amplifier
Subelement is in k1Conducting in T time, in k2Shut-off in T time.Any one described power amplifier subelement turns off corresponding amplitude
A1, it is A to turn on corresponding overall output amplitude1+ Δ A, it is A to turn off corresponding overall output amplitude1, Δ A one power amplifier of expression
The corresponding output amplitude of unit.Any one power amplifier subelement work make and break period of the shake maker connection is (k1+k2)
T, the corresponding radiofrequency signal of on, off are expressed as：
u1=(A1+ΔA)cos(ωct+φ)
u2=A1cos(ωct+φ)
Sinusoidal signal can be converted to corresponding square-wave signal by close power amplifier in real work, then pass through band logical in output
Higher hamonic wave is filtered out, only retains fundamental wave, for easy analysis, is directly represented here with fundamental wave, and without considering harmonic problem.
Then defining square-wave signal is：
Then power amplifier module output signal is：
U=u1δ+u2(1-δ)
=(A1+ΔA)cos(ωct+φ)·δ+A1cos(ωct+φ2)·(1-δ)
The Taylor series of δ are expressed as：
The Taylor series of δ are substituted into output signal expression and are obtained：
Wherein, removeOutside, remainder is all high frequency, low-frequency noise, is passing through filtering
It is filtered out after device, the output of total system is：
It can be seen from the above that being shaken by increasing degree, the precision that can be modulated with increasing degree, precision increase part corresponds toIt is proportional to the duty cycle of the ON time of shake power amplifier unit.
Therefore it can useTo calculate quantization error and k1And k1+k2Between correspondence.In actual calculating
In, if k1、k2Value above-mentioned formula both sides can not be made equal, then k1、k2Take the absolute value for the difference for making above-mentioned formula both sides most
Small value.
Further, the cycle of the dither signal corresponding counter counts k1+k2Cannot be infinitely great.
Specifically, in high frequency, low frequency component, the component closest to carrier frequency isIn order to anti-
Only phase jitter brings in-band noise, when maker is shaken in design, it is necessary to assure shouldIn system
Passband outside.The requirement requires k1+k2Cannot be infinitely great, also limit the ability of amplitude jitter increase rate precision.
Further, the power amplifier device further includes wave filter 4, input terminal and the power amplifier of the wave filter 4
The output terminal connection of module 3, the amplified modulated signal to be launched for being exported to the power amplifier module 3 carry out band
Pass filter.
Further, the power amplifier device further includes drive module 5, the output terminal of the drive module 5 with it is described
The input terminal connection of power amplifier module 3, the drive module 5 are used to be driven the power amplifier module 5.
Below by simulation example to the beneficial of the power amplifier device provided in an embodiment of the present invention based on polarization modulation
Effect is further described.
The embodiment of the present invention is verified using Matlab, Matlab simulation models are as shown in figure 3, in order to simplify mould
Type, the number of power amplifier subelement is 1 in power amplifier module, while has a shake power amplifier subelement.Assuming that the carrier signal cycle is
T, the gain of a power amplifier subelement is 10, it is assumed that power amplifier subelement input range is 1, then output amplitude is 10, power amplifier output
Signal is by having gain loss after wave filter, ideally, a corresponding filtered power amplifier subelement is corresponding defeated
It is U=6.365 to go out amplitude gain.Four point A, B, C and D in model are selected to test the embodiment of the present invention as key point
Card.
As shown in figure 4, work as k1When=0, shake power amplifier subelement turns off always, at this time waveform such as figure at each key point of system
System output signal amplitude shown in 4 is U (6.365).Wherein tri- points of A, B, C only show square wave here in order to represent convenient.
As shown in figure 5, work as k1=k2=1, shake power amplifier subelement is shaken in the cycle at one, and the on, off time is T
And T.At this time at each key point of system waveform as shown in figure 5, system output signal amplitude is 1.5U (9.548).
As shown in fig. 6, work as k1=1, k2=3, shake power amplifier subelement is shaken in the cycle at one, and the on, off time is
T and 3T.At this time at each key point of system waveform as shown in fig. 6, system output signal amplitude is 1.25U (7.956).
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and
Scope.
Claims (10)
1. a kind of power amplifier device based on polarization modulation, it is characterised in that the power amplifier device includes：Decoder,
Maker and power amplifier module are shaken, and the decoder, the shake maker and the power amplifier module three are sequentially connected；Its
In,
The decoder is used for the resolution ratio generation first of the range signal and the power amplifier module according to modulated signal to be launched
Control signal, and the power amplifier module is obtained according to the range signal of modulated signal to be launched and the resolution ratio of the power amplifier module
Quantization error, and the first control signal is sent to the power amplifier module, the quantization error is sent to described and is trembled
Dynamic maker；
The shake maker is used to generate second control signal according to the quantization error, and the second control signal is sent out
Send to the power amplifier module；
The power amplifier module is used for the amplification factor that the power amplifier module is controlled according to the first control signal, and according to described
Second control signal produces dither signal and quantization error is eliminated, to complete the amplification to the modulated signal to be launched.
2. power amplifier device according to claim 1, it is characterised in that the power amplifier module includes at least two power amplifiers
Unit, and it is in parallel between at least two power amplifiers subelement；The shake maker and at least two power amplifiers subelement
In the connection of any one power amplifier subelement, it is single to any one described power amplifier for sending the second control signal
Member, to control the break-make of any one power amplifier subelement.
3. power amplifier device according to claim 2, it is characterised in that the decoder and at least two power amplifier
Other power amplifier subelements in unit connect respectively, for the first control signal to be respectively sent at least two work(
Other power amplifier subelements in subelement are put, to control the break-make of other power amplifier subelements, and then control power amplifier module
Amplification factor.
4. power amplifier device according to claim 2, it is characterised in that when the second control signal is high level,
Any one power amplifier subelement conducting；When the second control signal is low level, any one power amplifier is single
Member shut-off.
5. power amplifier device according to claim 2, it is characterised in that the shake maker includes look-up table and counting
Device；Wherein,
The look-up table is used for the cycle corresponding counter counts that the dither signal is obtained according to the quantization error,
And any one described corresponding counter counts of power amplifier subelement ON time within the cycle of the dither signal,
And send to the counter；
The counter is used for the cycle corresponding counter counts according to the dither signal, and in the shake letter
Number cycle in corresponding counter counts output second control of described any one power amplifier subelement ON time
Signal.
6. power amplifier device according to claim 5, it is characterised in that the quantization error is stored with the look-up table
Correspondence between counter counts corresponding with the cycle of the dither signal, and the quantization error with institute
State pair between any one described corresponding counter counts of power amplifier subelement ON time in the cycle of dither signal
It should be related to.
7. power amplifier device according to claim 6, it is characterised in that the quantization error, the week of the dither signal
Phase corresponding counter counts and within the cycle of the dither signal during any one power amplifier subelement conducting
Between meet following relation between corresponding counter counts three：
<mrow>
<msub>
<mi>A</mi>
<mn>2</mn>
</msub>
<mo>=</mo>
<mfrac>
<msub>
<mi>k</mi>
<mn>1</mn>
</msub>
<mrow>
<msub>
<mi>k</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>k</mi>
<mn>2</mn>
</msub>
</mrow>
</mfrac>
<mi>&Delta;</mi>
<mi>A</mi>
</mrow>
Wherein, A2For quantization error, Δ A is the power amplifier module resolution ratio, k1Appoint to be described within the cycle of the dither signal
The corresponding counter counts of one power amplifier subelement ON time of meaning, k1+k2For the cycle corresponding meter of the dither signal
Rolling counters forward number, and k1、k2For integer, if k1、k2Value above-mentioned formula both sides can not be made equal, then k1、k2Take make it is above-mentioned
The value of the absolute value minimum of the difference of formula both sides.
8. power amplifier device according to claim 7, it is characterised in that the cycle corresponding counter of the dither signal
Counts k1+k2Cannot be infinitely great.
9. power amplifier device according to claim 2, it is characterised in that the power amplifier device further includes wave filter,
The input terminal of the wave filter is connected with the output terminal of the power amplifier module, amplified for being exported to the power amplifier module
The modulated signal to be launched carry out bandpass filtering.
10. power amplifier device according to claim 2, it is characterised in that the power amplifier device further includes driving mould
Block, the output terminal of the drive module are connected with the input terminal of the power amplifier module, and the drive module is used for the power amplifier
Module is driven.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615593A (en) * | 2020-11-25 | 2021-04-06 | 极芯通讯技术(南京)有限公司 | Radio frequency power amplifying device capable of vibrating by amplitude-phase deviation |
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| CN107948116B (en) | 2020-02-11 |
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