CN106452370A - High-fallback Doherty power amplifier based on asymmetric structure and implementation method of high-fallback Doherty power amplifier - Google Patents
High-fallback Doherty power amplifier based on asymmetric structure and implementation method of high-fallback Doherty power amplifier Download PDFInfo
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- CN106452370A CN106452370A CN201610888444.2A CN201610888444A CN106452370A CN 106452370 A CN106452370 A CN 106452370A CN 201610888444 A CN201610888444 A CN 201610888444A CN 106452370 A CN106452370 A CN 106452370A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
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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
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
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Abstract
The invention provides a high-fallback Doherty power amplifier based on an asymmetric structure and an implementation method of the high-fallback Doherty power amplifier. The high-fallback Doherty power amplifier adopts an asymmetric power divider used for dividing input power unequally and outputting a first signal of relatively low power to a main power amplifying circuit and a second signal of relatively high power to an auxiliary power amplifying circuit; a 50-ohm quarter-wave impedance transformer T1 is connected to the output end of the main power amplifying circuit and is connected with the output end of the auxiliary power amplifying circuit; and a 28.9-ohm quarter-wave impedance transformer T2 is connected in series to the joint end of the 50-ohm quarter-wave impedance transformer T1 and the auxiliary power amplifying circuit, so that power is combined and then output to a load. Compared with the prior art, due to the adoption of the asymmetric structure and improvement on a load modulation network of the conventional Doherty power amplifier, the load impedance of a main power amplifier in a low input power state is increased, and the high efficiency power fallback range of the Doherty power amplifier is improved.
Description
Technical field
The present invention relates to radio-frequency communication technical field, more particularly to a kind of high rollback Doherty based on unsymmetric structure
Power amplifier and its implementation.
Background technology
With developing rapidly for wireless communication technology, frequency microwave technology is more and more important in daily life.
In order to transmit data volume as big as possible in limited spectral bandwidth, communication business generally adopts extremely complex modulation system,
And this can cause the peak-to-average force ratio (PAPR) of signal to become big, and traditional power amplifier such as A class, AB class is used to believe non-perseverance envelope
Number it is amplified efficiency very low, especially when high-power rollback.The radio-frequency power for taking into account high efficiency and high linearity is put
Big device becomes one of study hotspot of academia and industrial quarters.Doherty power amplifier is because of energy high efficiency amplifier modulated signal
And the relatively low and dominant form that becomes the adopted power amplifier of current radio communication of cost.One typical two-way Doherty
Power amplifier includes major-minor two power amplifiers, and signal is divided into two defeated respectively by major-minor power amplifier input by power splitter
Enter, signal combining is exported by outfan by a load modulation network, according to the major-minor work(of the size dynamic modulation of input signal
The payload impedance of rate amplifier, such that it is able to make Doherty power amplifier in the case of output significantly rollback still
There is very high efficiency.
However, traditional Doherty power amplifier output efficiency in saturation power rollback 6dB reaches highest,
When back-off is more than 6dB, efficiency quickly will reduce.It is multicarrier and number is more and more along with future input signal
Situation, its peak-to-average force ratio is also increasingly improved, and can reach 9 12dB.Such as peak-to-average force ratio in TD SCDMA system can reach
10dB, if so, the efficiency of the Doherty power amplifier of traditional rollback 6dB will be substantially reduced therefore for advocating energy-conserving and environment-protective,
The world today of green communications, the rollback efficiency for improving power amplifier will have very great practical significance.
Therefore, for drawbacks described above present in currently available technology, it is necessary in fact to be studied, to provide a kind of scheme,
Solve defect present in prior art.
Content of the invention
In view of this, it is an object of the invention to provide a kind of high rollback Doherty power based on unsymmetric structure is put
Big device and its implementation, using unsymmetric structure while by improving tradition Doherty work(in major loop and subsidiary loop
The load modulation network of rate amplifier, increases the load impedance of main power amplifier under low input power state, improves Doherty power amplifier
High efficiency back-off scope.
In order to overcome the defect of prior art, the present invention is employed the following technical solutions：
A kind of high rollback Doherty power amplifier based on unsymmetric structure, puts including asymmetric power splitter, main power
Big circuit, auxiliary power amplifying circuit and novel load modulating network, wherein, the asymmetric power splitter is used for input power
Carry out not decile, and by lower-powered first signal output to the main power amplification circuit and by larger for power second
Signal output gives the auxiliary power amplifying circuit, the first via signal of the asymmetric power splitter output and second road signal
Power ratio is 1:2, the output of the main power amplification circuit and auxiliary power amplifying circuit is adjusted through the novel load
Export to load after network processed；
The impedance of the load is 50 ohm；The novel load modulating network includes the first impedance transformer T1 and second
Impedance transformer T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, second resistance
Resistance parallel operation T2 adopts the quarter-wave impedance transformer in 28.9 Europe；The outfan of the main power amplification circuit with described
One end of impedance transformer T1 is connected, the output of the other end of the impedance transformer T1 and the auxiliary power amplifying circuit
End is connected with one end of the second impedance transformer T2, the other end of the second impedance transformer T2 and the load
One end is connected, the other end ground connection of the load；
The main power amplification circuit includes primary input match circuit, main power amplifier and the main output being sequentially connected in series
Distribution road, debugging the main output matching circuit makes load impedance of the main power amplification circuit in low input power be
150 Europe and the load impedance in high input power are 50 Europe；It is defeated that the auxiliary power amplifying circuit includes to be sequentially connected in series auxiliary
Enter match circuit, auxiliary power amplifier and auxiliary output matching circuit, the debugging auxiliary output matching circuit makes described auxiliary
Load impedance of the power amplification circuit in high input power is helped for 25 Europe, while one in the auxiliary output matching circuit
Changing arrange compensating line to make load impedance of the auxiliary power amplifying circuit in low input power to be infinitely great；
The main power amplifier is AB power-like amplifier, and the auxiliary power amplifier is C power-like amplifier.
Preferably, the compensating line is 25 Europe.
Preferably, the front end of the auxiliary input matching circuit is additionally provided with the quarter-wave delay line phase in 50 Europe.
Preferably, the main power amplifier is realized using transistor.
Preferably, the auxiliary power amplifier is realized using transistor.
In order to overcome the defect of prior art, the present invention also proposes a kind of high rollback Doherty based on unsymmetric structure
The implementation method of power amplifier, is achieved by the steps of：
The AB power-like amplifier of one standard of debugging, as main power amplifier, and debugs main output matching circuit and makes
It is 50 that load impedance of the main power amplification circuit in low input power is 150 Europe and the load impedance in high input power
Europe；
The C power-like amplifier of one standard of debugging, as auxiliary power amplifier, and debugs auxiliary output matching circuit
Load impedance of the auxiliary power amplifying circuit in high input power is made for 25 Europe；In auxiliary output matching circuit, compensation is set
Line and integrated debugging auxiliary output matching circuit and compensating line make load of the auxiliary power amplifying circuit in low input power
Impedance is infinity；
A novel load modulating network is debugged, the novel load modulating network includes the first impedance transformer T1 and second
Impedance transformer T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, second resistance
Resistance parallel operation T2 adopts the quarter-wave impedance transformer in 28.9 Europe；
Using asymmetric power splitter, the main power amplification circuit that has debugged, auxiliary power amplifying circuit and novel load are adjusted
Combination of network processed is got up, and wherein, the asymmetric power splitter is used for for input power carrying out not decile, and by lower-powered the
One signal output is exported to auxiliary power amplification to the main power amplification circuit and by secondary signal larger for power
Circuit, the asymmetric first via signal of power splitter output and the power ratio of second road signal are 1:2；The main power amplification
The outfan of circuit is connected with one end of the impedance transformer T1, the other end of the impedance transformer T1 and the auxiliary
The outfan of power amplification circuit is connected with one end of the second impedance transformer T2, the second impedance transformer T2's
The other end is connected with one end of the load, the other end ground connection of the load.
Preferably, the compensating line is 25 Europe.
Preferably, in the front end of auxiliary input matching circuit, the quarter-wave delay line phase in 50 Europe is provided with.
Hinge structure, the present invention is by having simultaneously improved biography using unsymmetric structure in major loop and subsidiary loop
The load modulation network of system Doherty power amplifier, increases the load impedance of main power amplifier under low input power state so that
Main power amplifier load impedance under low input power state is 150 Europe, so that Doherty power amplifier is remained able in back-off 9dB
Keep high efficiency.
Description of the drawings
Fig. 1 is a kind of structural representation of the high rollback Doherty power amplifier based on unsymmetric structure in the present invention.
Fig. 2 is impedance transformation characteristic figure of the characteristic impedance for the quarter-wave transmission line of ZT.
Fig. 3 is the emulation datagram for simulating the present invention using ADS software.
Specific embodiment
The following is the specific embodiment of the present invention and accompanying drawing combined, technical scheme is further described,
But the present invention is not limited to these embodiments.
For the defect that prior art is present, applicant is carried out to the structure of Doherty power amplifier in prior art
In-depth study, it is found by the applicant that traditional Doherty power amplifier is 100 Europe in the load impedance of rollback point, due to etc.
The restriction of Wilkinson power divider is divided to cause its delivery efficiency at most can only reach highest in output rollback 6dB, when defeated
Go out back-off more when efficiency quickly will reduce, be difficult to meet the requirement of current wireless communication system.Trace it to its cause,
In the case of identical input power, the ratio of gains AB class main road amplifier of C class booster amplifier is low so that booster amplifier is defeated
Go out electric current less than main road amplifier, it is not abundant enough to result in Doherty active load modulation, reduces whole Doherty power
The rollback efficiency of amplifier.
In order to overcome the defect of prior art, the application employs a kind of unsymmetric structure, makes C class booster amplifier and AB
The output current of class main road amplifier is suitable, so that active load is fully modulated, while adopting novel load modulating network, increases
The load impedance of main power amplifier under big low input power state, so as to improve the high efficiency back-off scope of Doherty power amplifier.Ginseng
See Fig. 1, a kind of structured flowchart of the high rollback Doherty power amplifier based on unsymmetric structure of the present invention is shown, including
Asymmetric power splitter, main power amplification circuit, auxiliary power amplifying circuit and novel load modulating network, wherein, asymmetric work(
Divide device to be used for for input power not decile being carried out, and lower-powered first signal output to main power amplification circuit and is incited somebody to action
The larger secondary signal of power is exported to auxiliary power amplifying circuit, the first via signal of asymmetric power splitter output and the second tunnel
The power ratio of signal is 1:2, the output of main power amplification circuit and auxiliary power amplifying circuit is modulated through novel load
Export to load after network.
The impedance of load is 50 ohm；Novel load modulating network includes the first impedance transformer T1 and the second impedance conversion
Device T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, and the second impedance transformer T2 is adopted
The quarter-wave impedance transformer in 28.9 Europe；The outfan of main power amplification circuit is connected with one end of impedance transformer T1
Connect, the other end of impedance transformer T1 is connected with the outfan of auxiliary power amplifying circuit and one end of the second impedance transformer T2
Connect, the other end of the second impedance transformer T2 is connected with one end of load, the other end ground connection of load.
Main power amplification circuit includes primary input match circuit, main power amplifier and the main output matching electricity being sequentially connected in series
Road, debugging main output matching circuit makes load impedance of the main power amplification circuit in low input power for 150 Europe and high defeated
Load impedance when entering power is 50 Europe；Auxiliary power amplifying circuit includes to be sequentially connected in series auxiliary input matching circuit, auxiliary work(
Rate amplifier and auxiliary output matching circuit, debugging auxiliary output matching circuit makes auxiliary power amplifying circuit in high input power
When load impedance be 25 Europe, while auxiliary output matching circuit in integrated setting compensating line make auxiliary power amplifying circuit
Load impedance in low input power is infinity；Main power amplifier is AB power-like amplifier, auxiliary power amplifier
For C power-like amplifier.
With respect to the Doherty power amplifier technology of traditional rollback 6dB, the present invention passes through using unsymmetric structure with newly
Type load modulation network, so as to increase the rollback power of Doherty power amplifier, has been finally reached the purpose of rollback 9dB,
This brings very big significance to the work efficiency for improving Doherty power amplifier.Simultaneously by the compensation of peak value power amplifier outfan
Line be added to auxiliary output matching circuit in, the compensating line so as to overcome traditional Doherty power amplifier auxiliary branch be with single
The technological deficiency of center frequency points definition, greatly reduces the quality factor of auxiliary output matching circuit, so as to greatly widen
The bandwidth of operation of Doerty.
In a preferred embodiment, compensating line be 25 Europe, add compensating line be in order that auxiliary output matching circuit
Load impedance in low input power is infinity, simultaneously because high input power is to match 25 Europe, using the benefit in 25 Europe
Repay line be exactly in order to improve performance during high input power further.
The design principle of technique scheme is described in detail in detail further below.Hinge structure, by the present invention in that with a kind of
Unsymmetric structure, first by the input power for determining than one not decile of design power splitter, in the case of low input power only
Main power amplifier is had to work, the impedance of its outfan is Z0/ α, wherein α are the numerical value of rollback.The major-minor power amplifier of traditional Doherty structure
Power ratio be 1:1, i.e. α=1/2, that is to say that the output impedance of the main power amplifier in rollback 6dB is 100 Europe；When major-minor power amplifier
Power ratio be 1:When 2, α=1/3, now rollback also just reached 9dB, the output impedance of main power amplifier just be.In tradition
In the case that 50 Europe of impedance transformation line resistance of the main power amplifier outfan of Doherty are constant, a section four of concatenation after combining outfan
/ mono- wavelength impedance transformers line resistance is changed to 28.9 Europe by 50 Europe, so as to realize load matched, reaches the mesh of rollback 9dB
's.
When low input power state, only main power amplifier is opened, and all input signals are amplified through main power amplifier, and auxiliary power amplifier is complete
Contract fully, then the output terminal impedance under main power amplifier and auxiliary power amplifier low-power is：
ZC,Low=150 Ω
ZP,Low=∞
Referring to Fig. 2, impedance transformation characteristic figure of the characteristic impedance for the quarter-wave transmission line of ZT is shown, then main work(
It is that Fig. 2 (is joined, herein Z in 16.7 Europe to put output impedance resistance value after one section of 50 Europe a quarter impedance transformation line T10=150
Ω,ZT=50 Ω, then ZL=16.7 Ω), the impedance obtains now low again through one section of 28.9 Europe a quarter impedance transformation line T2
Under power rating, as 50 ohm of the impedance of combining point (joins Fig. 2, herein Z0=16.7 Ω, ZT=28.9 Ω, then ZL=50 Ω).
When high input power state, major-minor power amplifier is worked together, and when input power reaches maximum, major-minor power amplifier is simultaneously
Saturation, now entirety Doherty power amplifier output maximum, main power amplifier outfan is matched 50 ohm in saturation,
Quarter-wave impedance transformation line T1 does not produce any impact to main power amplifier impedance under high input power；Auxiliary power amplifier is defeated in the same manner
Going out end and 25 ohm being matched in saturation, final combining point is by 50 ohm and auxiliary of main power amplifier list branch circuit
25 ohm of parallel connections of power amplifier list branch circuit obtain 16.7 ohm, the impedance equally again through one section of 28.9 Ou Si/
One impedance transformation line T2 obtains as 50 ohm of the impedance of combining point under now low power state and (joins Fig. 3, herein Z0=16.7
Ω,ZT=28.9 Ω, then ZL=50 Ω), this is consistent with actual load impedance value.
In a preferred embodiment, the main power amplifier is realized using transistor.
In a preferred embodiment, the auxiliary power amplifier is realized using transistor.
In order to overcome the defect of prior art, the present invention also proposes a kind of high rollback Doherty based on unsymmetric structure
The implementation method of power amplifier, is achieved by the steps of：
Step one：The AB power-like amplifier of one standard of debugging, as main power amplifier, and debugs main output matching
It is 150 Europe and the load impedance in high input power that circuit makes load impedance of the main power amplification circuit in low input power
For 50 Europe；
Step 2：The C power-like amplifier of one standard of debugging, as auxiliary power amplifier, and debugs auxiliary output
Match circuit makes load impedance of the auxiliary power amplifying circuit in high input power for 25 Europe；In auxiliary output matching circuit
Compensating line is set and integrated debugging auxiliary output matching circuit and compensating line make auxiliary power amplifying circuit in low input power
When load impedance for infinity；Prior art is typically after output matching circuit designs, and is not changing match circuit
On the basis of, redesign this root compensating line；The compensating line design of prior art cause compensating line be with single center frequency points
Definition, increase the quality factor that compensating line can increase output matching circuit, so as to suppress the overall bandwidth of Doherty.This
Bright by output matching circuit and compensating line integrated setting and debugging, compensating line is added and is aided in auxiliary output matching circuit
Output matching circuit, so as to reduce the Q-value of auxiliary output matching circuit, has greatly widened the bandwidth of operation of Doherty power amplifier；
Step 3：A novel load modulating network is debugged, the novel load modulating network includes the first impedance transformer
T1 and the second impedance transformer T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, institute
The second impedance transformer T2 is stated using the quarter-wave impedance transformer in 28.9 Europe；
Step 4：Using asymmetric power splitter by the main power amplification circuit that has debugged, auxiliary power amplifying circuit and new
Type load modulation network combines, and wherein, the asymmetric power splitter is used for for input power carrying out not decile, and by power
Less first signal output to the main power amplification circuit and exports secondary signal larger for power to the auxiliary
Power amplification circuit, the asymmetric first via signal of power splitter output and the power ratio of second road signal are 1:2；The master
The outfan of power amplification circuit is connected with one end of the impedance transformer T1, the other end of the impedance transformer T1 with
The outfan of the auxiliary power amplifying circuit is connected with one end of the second impedance transformer T2, and second impedance becomes
The other end of parallel operation T2 is connected with one end of the load, the other end ground connection of the load.
Referring to Fig. 3, show using the special ADS software of RF application simulate mid frequency for 2.1GHz based on
The high rollback Doherty power amplifier drain efficiency analogous diagram of unsymmetric structure.Simulation result as shown in Figure 3 understands, satisfies
It is 45dBm with output, in the case of its rollback 9dB, (i.e. output is that 36dBm) the Doherty power amplifier is still permissible
Keep and almost consistent high efficiency under saturation output power state, be far longer than the 6dB back-off of traditional Doherty power amplifier
Scope.
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that right
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these improve and modification is also fallen in the protection domain of the claims in the present invention.To these embodiments
Multiple modifications be for those skilled in the art it will be apparent that General Principle defined herein can be
Realized in the case of without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention is not intended to be limited to
These embodiments shown in the application, and be to fit to consistent with principle disclosed in the present application and features of novelty most wide
Scope.
Claims (8)
1. a kind of high rollback Doherty power amplifier based on unsymmetric structure, it is characterised in that divide including asymmetric work(
Device, main power amplification circuit, auxiliary power amplifying circuit and novel load modulating network, wherein, the asymmetric power splitter is used
In input power is carried out not decile, and by lower-powered first signal output to the main power amplification circuit and by work(
The larger secondary signal of rate is exported to the auxiliary power amplifying circuit, the first via signal of the asymmetric power splitter output and
The power ratio of second road signal is 1:2, the output of the main power amplification circuit and auxiliary power amplifying circuit is through institute
Export to load after stating novel load modulating network；
The impedance of the load is 50 ohm；The novel load modulating network includes the first impedance transformer T1 and the second impedance
Changer T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, and second impedance becomes
Parallel operation T2 adopts the quarter-wave impedance transformer in 28.9 Europe；The outfan of the main power amplification circuit and the impedance
One end of changer T1 is connected, the outfan of the other end of the impedance transformer T1 and the auxiliary power amplifying circuit and
One end of the second impedance transformer T2 is connected, the other end of the second impedance transformer T2 and one end of the load
It is connected, the other end ground connection of the load；
The main power amplification circuit includes primary input match circuit, main power amplifier and the main output matching electricity being sequentially connected in series
Road, debugging the main output matching circuit makes load impedance of the main power amplification circuit in low input power for 150 Europe
And the load impedance in high input power is 50 Europe；The auxiliary power amplifying circuit includes to be sequentially connected in series auxiliary input coupling
Circuit, auxiliary power amplifier and auxiliary output matching circuit, debugging the auxiliary output matching circuit makes the auxiliary power
Load impedance of the amplifying circuit in high input power is 25 Europe, while integrated setting in the auxiliary output matching circuit
Compensating line makes load impedance of the auxiliary power amplifying circuit in low input power for infinity；
The main power amplifier is AB power-like amplifier, and the auxiliary power amplifier is C power-like amplifier.
2. the high rollback Doherty power amplifier based on unsymmetric structure according to claim 1, it is characterised in that
The compensating line is 25 Europe.
3. the high rollback Doherty power amplifier based on unsymmetric structure according to claim 1, it is characterised in that
The front end of the auxiliary input matching circuit is additionally provided with the quarter-wave delay line phase in 50 Europe.
4. the high rollback Doherty power amplifier based on unsymmetric structure according to claim 1, it is characterised in that
The main power amplifier is realized using transistor.
5. the high rollback Doherty power amplifier based on unsymmetric structure according to claim 1, it is characterised in that
The auxiliary power amplifier is realized using transistor.
6. a kind of implementation method of the high rollback Doherty power amplifier based on unsymmetric structure, it is characterised in that by such as
Lower step is realized：
The AB power-like amplifier of one standard of debugging, as main power amplifier, and debugs main output matching circuit and makes main work(
It is 50 Europe that load impedance of the rate amplifying circuit in low input power is 150 Europe and the load impedance in high input power；
Debugging one standard C power-like amplifier, as auxiliary power amplifier, and debug auxiliary output matching circuit make auxiliary
Load impedance of the power amplification circuit in high input power is helped for 25 Europe；In auxiliary output matching circuit, compensating line is set simultaneously
Integrated debugging auxiliary output matching circuit and compensating line make load impedance of the auxiliary power amplifying circuit in low input power
For infinity；
A novel load modulating network is debugged, the novel load modulating network includes the first impedance transformer T1 and the second impedance
Changer T2, the first impedance transformer T1 adopt the quarter-wave impedance transformer in 50 Europe, and second impedance becomes
Parallel operation T2 adopts the quarter-wave impedance transformer in 28.9 Europe；
The main power amplification circuit that has debugged, auxiliary power amplifying circuit and novel load are modulated by net using asymmetric power splitter
Network combines, and wherein, the asymmetric power splitter is used for for input power carrying out not decile, and lower-powered first is believed
Number export to the main power amplification circuit and secondary signal larger for power exported to the auxiliary power amplifying circuit,
The asymmetric first via signal of power splitter output and the power ratio of second road signal are 1:2；The main power amplification circuit
Outfan be connected with one end of the impedance transformer T1, the other end of the impedance transformer T1 and the auxiliary power
The outfan of amplifying circuit is connected with one end of the second impedance transformer T2, and the second impedance transformer T2's is another
End is connected with one end of the load, the other end ground connection of the load.
7. the implementation method of the high rollback Doherty power amplifier based on unsymmetric structure according to claim 6, its
It is characterised by, the compensating line is 25 Europe.
8. the implementation method of the high rollback Doherty power amplifier based on unsymmetric structure according to claim 6, its
Being characterised by, the quarter-wave delay line phase in 50 Europe is provided with the front end of auxiliary input matching circuit.
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| CN107231131A (en) * | 2017-06-06 | 2017-10-03 | 江苏大学 | A kind of Doherty power amplifier for increasing back-off scope |
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| CN108011592A (en) * | 2017-11-15 | 2018-05-08 | 电子科技大学 | A kind of 3 tunnel Doherty power amplifiers that bandwidth is expanded using frequency characteristic compensation |
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| CN109889163A (en) * | 2019-02-27 | 2019-06-14 | 上海华虹宏力半导体制造有限公司 | Doherty power amplifier based on transformer |
| CN109905092A (en) * | 2017-12-11 | 2019-06-18 | 华为技术有限公司 | A kind of power amplifier device and signal processing method |
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| CN110011621A (en) * | 2019-03-28 | 2019-07-12 | 杭州电子科技大学温州研究院有限公司 | It is a kind of to integrate incorgruous and Doherty structure high rollback range radio frequency power amplifier |
| CN111049480A (en) * | 2019-12-28 | 2020-04-21 | 江苏科大亨芯半导体技术有限公司 | Method and device for improving linear efficiency of Doherty power amplifier |
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| CN113746434A (en) * | 2021-07-26 | 2021-12-03 | 杭州电子科技大学 | Broadband Doherty power amplifier based on load modulation network |
| WO2024082822A1 (en) * | 2022-10-21 | 2024-04-25 | 深圳飞骧科技股份有限公司 | Method for determining electric length of auxiliary power amplifier compensation line in doherty architecture |
-
2016
- 2016-10-12 CN CN201610888444.2A patent/CN106452370A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 方杨等: "一种非对称Doherty功率放大器设计", 《微电子学》 * |
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