CN106253866A - A kind of power amplifier - Google Patents
A kind of power amplifier Download PDFInfo
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- CN106253866A CN106253866A CN201610628222.7A CN201610628222A CN106253866A CN 106253866 A CN106253866 A CN 106253866A CN 201610628222 A CN201610628222 A CN 201610628222A CN 106253866 A CN106253866 A CN 106253866A
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- 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
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Abstract
The invention discloses a kind of power amplifier, including: at least one amplification module；It is connected to the input matching network of at least one amplification module input；It is connected to the output matching network of at least one amplification module outfan；It is connected to the input resonant network on arbitrary connection wire in each input matching network, and/or the export resonance network being connected in each output matching network on arbitrary connection wire；First end of input resonant network connects corresponding input matching network, the second end ground connection；First end of export resonance network connects corresponding output matching network, the second end ground connection；Input resonant network is consistent with the operating frequency of envelope signal in power amplifier input signal with the resonant frequency of export resonance network.The present invention, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power amplifier obtained greater efficiency under different output power, improve again the linearity of power amplifier.
Description
Technical field
The present invention relates to wireless communication technology field, relate to a kind of power amplifier.
Background technology
In a wireless communication system, the core during radio-frequency power amplifier is base station equipment.Base station intermediate power amplifier master
Conventional power amplifier to be had (such as AB power-like amplifier, A power-like amplifier and B power-like amplifier) and Doherty power
Amplifiers etc., as it is shown in figure 1, conventional power amplifier (single channel) can include an amplification module 10, are connected to this amplification module
0th input matching network 11 of 10 inputs, is connected to the zero output matching network 12 of this amplification module 10 outfan.
And efficiency and the linearity most important two indexs that are communication system.In order to solve efficiency, currently mainly adopt
Use Doherty power amplifier.As in figure 2 it is shown, Doherty power amplifier is to use active load modulation technology, by two-way electricity
Road is constituted, and a road circuit can include a Carrier Power Amplifier 20, is connected to the of this Carrier Power Amplifier 20 input
One input matching network 21, is connected to the first output matching network 22 of this Carrier Power Amplifier 20 outfan, wherein, carrier wave
Power amplifier 20 is operated under AB class state；Another road circuit can include a peak power amplifier 30, is connected to this peak
Second input matching network 31 of value power amplifier 30 input, is connected to the second of this peak power amplifier 30 outfan
Output matching network 32, wherein, peak power amplifier 30 is operated under C class state.Two-way circuit undertakes different defeated respectively
Enter signal power, ensure that two power amplifiers are all operated in respective saturation region as much as possible, thus ensure whole power
Amplifier all maintains higher efficiency in the range of the biggest input signal power.But, due to peak power amplifier
30 are operated under C class state, cause the linearity of Doherty power amplifier substantially to reduce.
In order to solve the linearity deterioration problem that Doherty power amplifier exists, have employed digital pre-distortion at present
(Digital Pre-Distortion, DPD) coordinates the way of Doherty power amplifier to improve the linearity.DPD system is
Correction various distortion, it is desirable to the signal that sampling is returned is at least five times of primary signal.Along with the development of communication technology, signal
Bandwidth is more and more wider, has evolved to 100MHz even 200MHz at present.According to sampling thheorem, in order to effectively collect letter
Number, the sample rate of A/D and D/A converter is proposed the highest requirement.Therefore, under existence conditions, such as 200MHz is surpassed
Broadband signal, the signal that DPD sampling is returned is generally three times of primary signal, so can cause the poor effect that DPD corrects, with
Time power amplifier exist memory effect can make again DPD algorithm realize become difficulty.
Summary of the invention
In view of this, the purpose of the present invention is to propose to a kind of power amplifier, not increase power amplification circuit direct current
In the case of power consumption and complex circuit designs degree, both can obtain greater efficiency under different output power by guaranteed output amplifier,
The linearity of power amplifier can be improved again.
For achieving the above object, the present invention adopts the following technical scheme that
Embodiments provide a kind of power amplifier, including:
At least one amplification module；
It is connected to the input matching network of at least one amplification module input described；
It is connected to the output matching network of at least one amplification module outfan described；
It is connected to the input resonant network on arbitrary connection wire in each input matching network, and/or connects respectively
The export resonance network on arbitrary connection wire in each output matching network；
First end of described input resonant network connects corresponding input matching network, the second end ground connection；
First end of described export resonance network connects corresponding output matching network, the second end ground connection；
The resonant frequency of described input resonant network and described export resonance network and described power amplifier input signal
The operating frequency of middle envelope signal is consistent.
Further, the wire that connects in described input matching network includes adjacent connection in described input matching network
Wire between two elements, and the wire that described input matching network is connected with signal source and described amplification module；
In described output matching network connect wire include in described output matching network the two elements of adjacent connection it
Between wire, and described output matching network and load and the wire that is connected of described amplification module.
Further, described input resonant network includes the first inductance and first electric capacity of series connection.
Further, described export resonance network includes the second inductance and second electric capacity of series connection.
Further, described power amplifier includes Doherty power amplifier unit.
Further, described Doherty power amplifier unit includes single-stage Doherty power amplifier or multistage Doherty
Power amplifier.
Further, described Doherty power amplifier unit includes two-way Doherty power amplifier or multichannel Doherty
Power amplifier.
The invention has the beneficial effects as follows: the power amplifier that the present invention provides, by each input at power amplifier
Distribution network and/or each output matching network design resonant network, one end ground connection of resonant network, and makes the resonance of resonant network
Frequency is consistent with the operating frequency of envelope signal in power amplifier input signal, greatly reduces power amplifier input signal
And/or the envelope signal in output signal, and then reduce because the memory effect of envelope signal generation is to power amplifier linearity
The impact of degree, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power was put
Big device obtains greater efficiency under different output power, improves again the linearity of power amplifier.
Accompanying drawing explanation
Below by describing the exemplary embodiment of the present invention in detail by referring to accompanying drawing, make those of ordinary skill in the art
Become apparent from the above-mentioned and other feature and advantage of the present invention, in accompanying drawing:
Fig. 1 is the circuit diagram of existing conventional power amplifier；
Fig. 2 is the circuit diagram of existing Doherty power amplifier；
Fig. 3 a-Fig. 3 e is the circuit diagram of the power amplifier that the embodiment of the present invention one provides；
Fig. 4 is the circuit diagram of the single-stage two-way Doherty power amplifier that the embodiment of the present invention two provides；
Fig. 5 is the circuit diagram of the multistage Doherty power amplifier that the embodiment of the present invention three provides；
Fig. 6 is the circuit diagram of the multichannel Doherty power amplifier that the embodiment of the present invention four provides.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.May be appreciated
It is that specific embodiment described herein is used only for explaining the present invention, rather than limitation of the invention.Further need exist for explanation
, for the ease of describing, accompanying drawing illustrate only part related to the present invention rather than entire infrastructure.
When existing power amplifier normally works, input signal is entered circuit by input INPUT, is mated by input
Network enters amplification module and carries out signal amplification.Owing to input signal is made up of with carrier signal envelope signal, therefore input letter
Number frequency be also made up of the operating frequency of the operating frequency of envelope signal with carrier signal.For wireless communication signals, envelope
The operating frequency of signal is generally tens megahertzs, and the operating frequency of carrier signal is hundreds of megahertz and arrives several GHzs.
The memory effect Producing reason of power amplifier is that the output impedance of power amplifier transistor (amplification module) is sent out with frequency
Changing, and the output impedance of power amplifier transistor changes greatly along with the operating frequency of envelope signal.Therefore bag is eliminated
The operating frequency of network signal is to improve power amplifier linearity most straightforward approach.
Therefore, the invention provides a kind of power amplifier, including: at least one amplification module；It is connected at least
The input matching network of one amplification module input；It is connected to the output matching net of at least one amplification module outfan
Network；It is connected to the input resonant network on arbitrary connection wire in each input matching network, and/or is connected to each defeated
Go out the export resonance network on arbitrary connection wire in matching network；First end of input resonant network connects corresponding input
Distribution network, the second end ground connection；First end of export resonance network connects corresponding output matching network, the second end ground connection；Input
Resonant network is consistent with the operating frequency of envelope signal in power amplifier input signal with the resonant frequency of export resonance network.
Wherein, the connection wire in input matching network includes the wire in input matching network between the two elements of adjacent connection, with
And the wire that input matching network is connected with signal source and amplification module；Connection wire in output matching network includes output
Wire between the two elements of adjacent connection in distribution network, and output matching network and leading that load and amplification module are connected
Line.Thus, remove the envelope signal in input signal by input resonant network and/or export resonance network, reduce because of bag
The memory effect that network signal the produces impact on power amplifier linearity.
Embodiments of the invention can be applied in various wireless network such as such as GSM, CDMA, WCDMA, LTE and WIMAX etc..
Embodiment one
Conventional power amplifier in Fig. 1 is optimized by the present embodiment.The present embodiment can be only in the 0th input coupling
Network connects the 0th input resonant network, it is also possible to only arbitrary connection in zero output matching network on arbitrary connection wire
Zero output resonant network is connected, it is also possible to simultaneously in the 0th input matching network on arbitrary connection wire on wire, and
In zero output matching network on arbitrary connection wire, connect the 0th input resonant network and zero output resonant network respectively.
In input signal after the 0th input resonant network or zero output resonant network, the most of envelope signal in input signal
Can be removed.
Wherein, the wire that connects in the 0th input matching network includes in the 0th input matching network two yuan of adjacent connection
Wire between part, and the wire that the 0th input matching network is connected with signal source and amplification module；Zero output pair net
Connection wire in network includes the wire in zero output matching network between the two elements of adjacent connection, and zero output
The wire that distribution network is connected with load and amplification module.
Exemplary, Fig. 3 a-Fig. 3 e is the circuit diagram of the power amplifier that the embodiment of the present invention one provides.Such as Fig. 3 a
Shown power amplifier includes: an amplification module 10, is connected to the 0th input pair net of this amplification module 10 input
Network 11, is connected to the zero output matching network 12 of this amplification module 10 outfan and is connected in the 0th input matching network 11
The 0th input resonant network 13 on wire between the two elements of adjacent connection.Wherein, the of the 0th input resonant network 13
One end connects the 0th input matching network 11, the second end ground connection, and the resonant frequency of the 0th input resonant network 13 is put with power
In big device input signal, the operating frequency of envelope signal is consistent.
Thus, input signal is when the 0th input resonant network 13, and envelope signal is shorted to ground, has filtered and will enter
Most of envelope signal of amplification module 10, thus eliminate the memory effect that amplification module 10 input produces because of envelope signal
Impact on power amplifier linearity；And for the carrier signal in input signal, the impedance of the 0th input resonant network 13
Close to infinity, therefore major part carrier signal can enter in amplification module 10 and be amplified.
Power amplifier as shown in Figure 3 b is with the difference of the power amplifier shown in Fig. 3 a: the 0th input
Distribution network 11 is not connected with on arbitrary connection wire the 0th input resonant network, but adjacent company in zero output matching network 12
Connect on wire between the two elements connect and have zero output resonant network 14.Wherein, the first of zero output resonant network 14
End connects zero output matching network 12, the second end ground connection, the resonant frequency of this zero output resonant network 14 and power amplification
In device input signal, the operating frequency of envelope signal is consistent.
Thus, input signal is after amplification module 10 amplifies, when zero output resonant network 14, and envelope signal quilt
It is shorted to ground, has filtered most of envelope signal, thus eliminated the memory that amplification module 10 outfan produces because of envelope signal
The effect impact on power amplifier linearity.
Power amplifier as shown in Figure 3 c is with the difference of the power amplifier shown in Fig. 3 a: be connected to the 0th
Zero output resonant network 14 on wire between the two elements of adjacent connection in output matching network 12.Wherein, the 0th is defeated
The first end going out resonant network 14 connects zero output matching network 12, the second end ground connection, this zero output resonant network 14
Resonant frequency is consistent with the operating frequency of envelope signal in power amplifier input signal.
Thus, when this power amplifier normally works, input signal is by the electricity of input INPUT ingoing power amplifier
Road, input signal is when the 0th input resonant network 13, and envelope signal is shorted to ground, has filtered and will enter amplification module 10
Most of envelope signal, thus eliminate memory effect that amplification module 10 input produces because of envelope signal to power amplification
The impact of the device linearity；Input signal is after amplification module 10 amplifies, when zero output resonant network 14, and envelope signal
It is shorted to ground, has filtered remaining major part envelope signal, further obviated amplification module 10 outfan because of envelope signal
The memory effect the produced impact on power amplifier linearity.
It addition, as shown in Figure 3 d, the 0th input resonant network 13 may connect to the 0th input matching network 11 and amplifies mould
On the wire that block 10 connects, the i.e. the 0th input resonant network 13 is arranged on the outfan of the 0th input matching network 11；Meanwhile,
Zero output resonant network 14 may connect on the wire that zero output matching network 12 is connected with amplification module 10, i.e. zero output
Resonant network 14 is arranged on the input of zero output matching network 12.Further, as shown in Figure 3 e, the 0th input resonant network
13 also may connect on the wire that the 0th input matching network 11 is connected with signal source, and the i.e. the 0th input resonant network 13 is arranged on
The input of the 0th input matching network 11；Meanwhile, zero output resonant network 14 also may connect to zero output matching network
On 12 wires being connected with load, i.e. zero output resonant network 14 is arranged on the outfan of zero output matching network 12.
Further, in such scheme, input resonant network can include the first inductance and first electric capacity of series connection；Export humorous
Vibrating network can include the second inductance and second electric capacity of series connection.Exemplary, with reference to Fig. 3 c, the 0th input resonant network 13 includes
The inductance L01 and electric capacity C01 of series connection, zero output resonant network 14 includes the inductance L02 and electric capacity C02 of series connection.
It should be noted that the 0th input matching network and zero output matching network in the present embodiment are existing putting
Any one input matching network of big module and output matching network.Such as, the 0th input matching network can be wave filter
Type matching network, it may include L-type, T-shaped and π type matching network；Zero output matching network can be shunt-resonant circuit type
Distribution network, it may include simple shunt-resonant circuit type and coupled resonance loop type matching network.0th input resonant network can set
Being placed in the 0th input matching network, zero output resonant network may be disposed in zero output matching network.
The power amplifier that the embodiment of the present invention one provides, by the input matching network in power amplifier (single channel)
And/or output matching network designs resonant network, one end ground connection of resonant network, and make resonant frequency and the merit of resonant network
In rate amplifier input signal, the operating frequency of envelope signal is consistent, greatly reduces power amplifier input signal and/or defeated
Go out the envelope signal in signal, and then reduce the memory effect produced because of the envelope signal shadow to power amplifier linearity
Ring, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power amplifier existed
Obtain greater efficiency under different output power, improve again the linearity of power amplifier.
Embodiment two
Fig. 4 is the circuit diagram of the single-stage two-way Doherty power amplifier that the embodiment of the present invention two provides.This enforcement
Example is with the difference of embodiment one, and the power amplifier in the present embodiment can include Doherty power amplifier unit,
Doherty power amplifier unit in the present embodiment includes single-stage two-way Doherty power amplifier, accordingly, amplification module
Including first carrier power amplifier and the first peak value power amplifier.As shown in Figure 4, this Doherty power amplifier includes two
Road circuit structure, wherein first via circuit includes first carrier power amplifier 20, is connected to this first carrier power amplifier
First input matching network 21 of 20 inputs, is connected to the first output matching of this first carrier power amplifier 20 outfan
Network 22, and the first input resonant network 23 being connected in the first input matching network 21 on arbitrary connection wire, and even
It is connected to the first export resonance network 24 on arbitrary connection wire in the first output matching network 22；Second road circuit includes first
Peak power amplifier 30, is connected to the second input matching network 31 of this first peak value power amplifier 30 input, connects
In the second output matching network 32 of this first peak value power amplifier 30 outfan, and it is connected to the second input matching network
The second input resonant network 33 on arbitrary connection wire in 31, and be connected to arbitrary connection in the second output matching network 32 and lead
The second export resonance network 34 on line.First input matching network 21 and the second input matching network 31 are connected to signal input
End, the outfan of the first output matching network 22 and the second output matching network 32 is connected to the input of load.
Wherein, the first end of above-mentioned each input resonant network connects corresponding input matching network, the second end ground connection；Above-mentioned
First end of each export resonance network connects corresponding output matching network, the second end ground connection；Each input resonant network and each defeated
The resonant frequency going out resonant network is consistent with the operating frequency of envelope signal in Doherty power amplifier input signal.
Further, with reference to Fig. 4, the first input resonant network 23 includes the inductance L11 and electric capacity C11 of series connection, and first is defeated
Go out resonant network 24 include series connection inductance L12 and electric capacity C12, second input resonant network 33 include series connection inductance L21 and
Electric capacity C21, the second export resonance network 34 includes the inductance L22 and electric capacity C22 of series connection.
In the present embodiment, when Doherty power amplifier normally works, input signal is entered Doherty by input INPUT
The first via circuit of power amplifier, enters first carrier power amplifier 20 by the first input matching network 21 and carries out signal
Amplify.The work of the inductance L11 in the first input resonant network 23 and the resonant frequency after electric capacity C11 series connection and envelope signal is frequently
Rate is consistent, and envelope signal is shorted to ground, thus reduces first carrier power amplifier 20 input because of envelope signal generation
The memory effect impact on power amplifier linearity.First input resonant network 23 its resistance value for carrier frequency
Close to infinity, therefore major part carrier signal can enter in first carrier power amplifier 20 and be amplified.
Input signal is entered the second road circuit of Doherty power amplifier by input INPUT, by the second input
Distribution network 31 enters the first peak value power amplifier 30 and carries out signal amplification.Second input resonant network 33 in inductance L21 and
Resonant frequency after electric capacity C21 series connection is consistent with the operating frequency of envelope signal, and envelope signal is shorted to ground, thus reduces
The memory effect that first peak value power amplifier 30 input produces because of the envelope signal impact on power amplifier linearity.The
Two input resonant networks 33 for carrier frequency its resistance value close to infinity, therefore major part carrier signal can enter
It is amplified in the first peak value power amplifier 30.
Accordingly, input signal is through being amplified by first carrier power amplifier 20 and the first peak value power amplifier 30
After, then filter remaining most envelope letter respectively through the first export resonance network 24 and the second export resonance network 34
Number, thus eliminate first carrier power amplifier 20 and the first peak value power amplifier 30 outfan and produce because of envelope signal
The memory effect impact on power amplifier linearity.First export resonance network 24 and the second export resonance network 34 are for carrying
For wave frequency, its resistance value is close to infinity, therefore carrier signal the overwhelming majority can be transferred to load.
The power amplifier that the embodiment of the present invention two provides, by each input in single-stage two-way Doherty power amplifier
Matching network and each output matching network design resonant network, one end ground connection of resonant network, and makes the resonance of resonant network
Frequency is consistent with the operating frequency of envelope signal in power amplifier input signal, greatly reduces power amplifier input signal
With the envelope signal in output signal, and then reduce because of envelope signal produce memory effect to power amplifier linearity
Impact, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power amplifier
Under different output power, obtain greater efficiency, improve again the linearity of power amplifier.
Embodiment three
Fig. 5 is the circuit diagram of the multistage Doherty power amplifier that the embodiment of the present invention three provides.The present embodiment with
The difference of embodiment two is, the Doherty power amplifier unit in the present embodiment includes multistage Doherty power amplification
Device, the present embodiment illustrates as a example by two-stage Doherty power amplifier, as it is shown in figure 5, based on Fig. 4, the merit of the present embodiment
Rate amplifier also includes: the second Carrier Power Amplifier 40, is connected to the 3rd of this second Carrier Power Amplifier 40 input the
Input matching network 41, is connected to the 3rd output matching network 42, Yi Jilian of this second Carrier Power Amplifier 40 outfan
It is connected to the 3rd input resonant network 43 on arbitrary connection wire in the 3rd input matching network 41, and is connected to the 3rd output
The 3rd export resonance network 44 on arbitrary connection wire in distribution network 42, the input of the 3rd input matching network 41 connects the
The outfan of one output matching network 22；Second peak power amplifier 50, is connected to this second peak power amplifier 50 defeated
Enter the 4th input matching network 51 of end, be connected to the 4th output matching network of this second peak power amplifier 50 outfan
52, and the 4th input resonant network 53 being connected in the 4th input matching network 51 on arbitrary connection wire, and be connected to
The 4th export resonance network 54 on arbitrary connection wire in 4th output matching network 52, the 4th input matching network 51 defeated
Enter end and connect the defeated of the outfan of the second output matching network 32, the 3rd output matching network 42 and the 4th output matching network 52
Go out end and be connected to the input of load.
Wherein, the first end of above-mentioned each input resonant network connects corresponding input matching network, the second end ground connection；Above-mentioned
First end of each export resonance network connects corresponding output matching network, the second end ground connection；Each input resonant network and each defeated
The resonant frequency going out resonant network is consistent with the operating frequency of envelope signal in Doherty power amplifier input signal.
Further, with reference to Fig. 5, the 3rd input resonant network 43 includes the inductance L31 and electric capacity C31 of series connection, and the 3rd is defeated
Go out resonant network 44 include series connection inductance L32 and electric capacity C32, the 4th input resonant network 53 include series connection inductance L41 and
Electric capacity C41, the 4th export resonance network 54 includes the inductance L42 and electric capacity C42 of series connection.
In the present embodiment, the operation principle of Doherty power amplifier is identical with embodiment two, and here is omitted.
The power amplifier that the embodiment of the present invention three provides, by respectively inputting coupling in multistage Doherty power amplifier
Network and each output matching network design resonant network, one end ground connection of resonant network, and makes the resonant frequency of resonant network
Consistent with the operating frequency of envelope signal in power amplifier input signal, greatly reduce power amplifier input signal and defeated
Go out the envelope signal in signal, and then reduce the memory effect produced because of the envelope signal shadow to power amplifier linearity
Ring, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power amplifier existed
Obtain greater efficiency under different output power, improve again the linearity of power amplifier.
Embodiment four
Fig. 6 is the circuit diagram of the multichannel Doherty power amplifier that the embodiment of the present invention four provides.The present embodiment with
The difference of embodiment two is, the Doherty power amplifier unit in the present embodiment includes multichannel Doherty power amplification
Device, the present embodiment illustrates as a example by three tunnel Doherty power amplifier, as it is shown in figure 5, based on Fig. 4, the merit of the present embodiment
Rate amplifier also includes the circuit of the 3rd road Doherty structure, specifically comprises the steps that the second peak power amplifier 60, is connected to this
5th input matching network 61 of the second peak power amplifier 60 input, is connected to this second peak power amplifier 60 defeated
Go out the 5th output matching network 62 of end, and the 5th be connected in the 5th input matching network 61 on arbitrary connection wire is defeated
Enter resonant network 63, and the 5th export resonance network 64 being connected in the 5th output matching network 62 on arbitrary connection wire.
The outfan of the 5th output matching network 62 is connected to the input of load.
Wherein, the first end of above-mentioned each input resonant network connects corresponding input matching network, the second end ground connection；Above-mentioned
First end of each export resonance network connects corresponding output matching network, the second end ground connection；Each input resonant network and each defeated
The resonant frequency going out resonant network is consistent with the operating frequency of envelope signal in Doherty power amplifier input signal.
Further, with reference to Fig. 6, the 5th input resonant network 63 includes the inductance L51 and electric capacity C51 of series connection, and the 5th is defeated
Go out resonant network 64 and include the inductance L52 and electric capacity C52 of series connection.
In the present embodiment, the operation principle of Doherty power amplifier is identical with embodiment two, and here is omitted.
The power amplifier that the embodiment of the present invention four provides, by respectively inputting coupling in multichannel Doherty power amplifier
Network and each output matching network design resonant network, one end ground connection of resonant network, and makes the resonant frequency of resonant network
Consistent with the operating frequency of envelope signal in power amplifier input signal, greatly reduce power amplifier input signal and defeated
Go out the envelope signal in signal, and then reduce the memory effect produced because of the envelope signal shadow to power amplifier linearity
Ring, in the case of not increasing power amplification circuit DC power and complex circuit designs degree, both ensure that power amplifier existed
Obtain greater efficiency under different output power, improve again the linearity of power amplifier.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example, the present invention is carried out
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (7)
1. a power amplifier, it is characterised in that including:
At least one amplification module；
It is connected to the input matching network of at least one amplification module input described；
It is connected to the output matching network of at least one amplification module outfan described；
It is connected to the input resonant network on arbitrary connection wire in each input matching network, and/or is connected to each
Export resonance network on arbitrary connection wire in output matching network；
First end of described input resonant network connects corresponding input matching network, the second end ground connection；
First end of described export resonance network connects corresponding output matching network, the second end ground connection；
The resonant frequency of described input resonant network and described export resonance network and described power amplifier input signal wrap
The operating frequency of network signal is consistent.
Power amplifier the most according to claim 1, it is characterised in that the connection wire bag in described input matching network
Include the wire between the two elements of adjacent connection in described input matching network, and described input matching network and signal source and
The wire that described amplification module connects；
The wire that connects in described output matching network includes in described output matching network between the two elements of adjacent connection
Wire, and the wire that described output matching network is connected with load and described amplification module.
Power amplifier the most according to claim 1, it is characterised in that described input resonant network includes the first of series connection
Inductance and the first electric capacity.
4. according to the arbitrary described power amplifier of claim 1-3, it is characterised in that described export resonance network includes series connection
The second inductance and the second electric capacity.
Power amplifier the most according to claim 4, it is characterised in that described power amplifier includes that Doherty power is put
Big device unit.
Power amplifier the most according to claim 5, it is characterised in that described Doherty power amplifier unit includes list
Level Doherty power amplifier or multistage Doherty power amplifier.
Power amplifier the most according to claim 5, it is characterised in that described Doherty power amplifier unit includes two
Road Doherty power amplifier or multichannel Doherty power amplifier.
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| CN201610628222.7A CN106253866A (en) | 2016-08-03 | 2016-08-03 | A kind of power amplifier |
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| CN201610628222.7A CN106253866A (en) | 2016-08-03 | 2016-08-03 | A kind of power amplifier |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838823A (en) * | 2018-08-15 | 2020-02-25 | 苏州能讯微波集成电路有限公司 | Power amplification system with low memory effect and power amplifier |
| WO2020172896A1 (en) * | 2019-02-28 | 2020-09-03 | 清华大学 | Radio-frequency power amplifier and base station |
| EP4147352A4 (en) * | 2020-06-05 | 2024-06-19 | Wolfspeed, Inc. | Radio frequency amplifier implementing an input baseband enhancement circuit and a process of implementing the same |
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