CN209608616U - A kind of branch harmonic controling circuit - Google Patents
A kind of branch harmonic controling circuit Download PDFInfo
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- CN209608616U CN209608616U CN201920379089.5U CN201920379089U CN209608616U CN 209608616 U CN209608616 U CN 209608616U CN 201920379089 U CN201920379089 U CN 201920379089U CN 209608616 U CN209608616 U CN 209608616U
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Abstract
The utility model discloses a kind of branch harmonic controling circuits, including power splitter module, first harmonic control loop, second harmonic control loop and fundamental wave matching module, wherein, the power splitter module is connected with power amplifier output end, for power signal to be divided into two-way output；The first harmonic control loop is connected with an output end of the power splitter module, first harmonic suppression module, first harmonic control module and the first impedance adjustment module are at least set, and the first harmonic suppression module is for retaining triple-frequency harmonics and filtering out other harmonic waves；First harmonic control module is for controlling triple-frequency harmonics；The first impedance adjustment module is used to carry out second harmonic control loop impedance adjusting and export power signal to give fundamental wave matching module.Using the technical solution of the utility model, the gap of circuit and voltage waveform and ideal value can be reduced, to improve the efficiency of power amplification.
Description
Technical field
The utility model belongs to harmonic controling matching technique field, is related to a kind of branch harmonic controling circuit, is used for crystal
Pipe drain is impedance-matched to load impedance (output matching network), improves the efficiency of power amplifier.
Background technique
It is higher and higher for power amplifier technology requirement with the continuous development of 5G technology, it should guarantee that design volume is small,
Guarantee its working performance again.Therefore power amplifier undoubtedly needs to the performance of raising equipment while small size
Improve the efficiency of itself.And the efficiency of power amplifier is improved it is necessary to design excellent harmonic controling match circuit, so
How to design excellent power amplifier matching circuit becomes the hot spot of research.
For common power amplifier matching circuit, needs to control harmonic wave to improve efficiency, usually control
Second harmonic and triple-frequency harmonics processed, harmonic controling practical significance is little more than three times, influences small to increase loss instead；And it is most
It is to realize that voltage, current waveform, traditional design block diagram are as shown in Figure 1 using control harmonic wave while tradition or filter.
But this traditional harmonic circuit mode, it is needed in impedance level while controlling each harmonic controling module, this will certainly be mutual
Mutually influence, and circuit design can not also accomplish it is succinct, efficient, it is difficult to guarantee that each higher hamonic wave can control ideal state,
Limit the raising of efficiency.
Therefore for above-mentioned this problem, it is necessary to further investigate, provide a kind of more accurate harmonic controling mode come into
The efficiency of one step raising power amplifier.
Utility model content
For technological deficiency of the existing technology, the utility model proposes a kind of branch harmonic controling circuits, by humorous
More accurate harmonic controling is realized on wavelength-division road, so as to improving the efficiency of power amplifier.
In order to solve technical problem of the existing technology, the technical solution of the utility model is as follows:
A kind of branch harmonic controling circuit, including power splitter module, first harmonic control loop, second harmonic control loop
With fundamental wave matching module, wherein
The power splitter module is connected with power amplifier output end, for power signal to be divided into two-way output；
Isolation resistance is set between the first harmonic control loop and second harmonic control loop；
The first harmonic control loop is connected with an output end of the power splitter module, at least setting first harmonic
Suppression module, first harmonic control module and the first impedance adjustment module, the first harmonic suppression module is for retaining three times
Harmonic wave simultaneously filters out other harmonic waves；First harmonic control module is for controlling triple-frequency harmonics；The first impedance adjustment module is used
In carrying out impedance adjusting to second harmonic control loop and export power signal and give fundamental wave matching module；
The second harmonic control loop is connected with another output end of the power splitter module, and it is humorous to be at least arranged second
Wave suppression module, second harmonic control module and the second impedance adjustment module, the second harmonic suppression module is for retaining two
Subharmonic simultaneously filters out other harmonic waves；Second harmonic control module is for controlling second harmonic；The second impedance adjustment module
Fundamental wave matching module is given for second harmonic control loop to be carried out impedance adjusting and exported power signal；
The fundamental wave matching module is connected with the first harmonic control loop and second harmonic control loop, and being used for will
Power output is to load.
Scheme as a further improvement, the first harmonic control loop and second harmonic control loop Integrated design exist
In power splitter module.
Scheme as a further improvement, the power splitter module is equal part power splitter, using Wilkinson power divider.
Scheme as a further improvement, the first harmonic suppression module further comprise its microstrip transmission line Z1、Z2、
Z3Mutually concatenate.
Scheme as a further improvement, the first harmonic control module further comprise its microstrip transmission line Z6、Z7Phase
And it connects.
Scheme as a further improvement, the first impedance adjustment module further comprise its microstrip transmission line Z10、Z12
Mutually concatenate.
Scheme as a further improvement, the second harmonic suppression module further comprise its microstrip transmission line Z4、Z5Phase
Series connection.
Scheme as a further improvement, the second harmonic control module further comprise its microstrip transmission line Z8、Z9Phase
And it connects.
Scheme as a further improvement, the second impedance adjustment module further comprise its microstrip transmission line Z10、Z13
Mutually concatenate.
Scheme as a further improvement, the fundamental wave matching module use T-type impedance matching, include at least microstrip line
Z14, microstrip line Z15, microstrip line Z16With microstrip line Z17, wherein the microstrip line Z15With microstrip line Z17After series connection with the micro-strip
Line Z16And it connects；The microstrip line Z14It is adjusted for impedance of fundamental frequency.
In above-mentioned technical proposal, power signal is inputted from input terminal, and power splitter passes through signal equal part, two paths of signals respectively
The harmonic suppression network and harmonic controling network being connected, then harmonic controling network is connected with load modulation network, load
It is connected after modulation with impedance of fundamental frequency matching network, transmission loss is reduced for power output to negative by impedance of fundamental frequency matching network
It carries.Compared with the existing technology, the utility model is no longer all the way while to control harmonic wave open circuit and short circuit, but control harmonic wave all the way
Signal open circuit, another way control harmonic signal short circuit.Since in F power-like amplifier, the short circuit of harmonic wave and open circuit are directly same
When control the waveform of half-sine wave electric current and square-wave voltage, so reducing interfering with each other for harmonic controling, it will be able to reduce
The gap of circuit and voltage waveform and ideal value, this makes it possible to the efficiency for improving power amplification.
Preferably, power splitter module is a big module, it includes harmonic rejection module, harmonic controling module, resistance
Anti- adjustment module.Also power splitter and harmonic wave control loop are integrally designed, to guarantee that overall losses are smaller.
The harmonic rejection module includes two parts, and first part is secondary harmonic suppression circuit.It includes Z1,
Z2,Z3Three sections of microstrip lines are connected in series, microstrip line Z3One end is open circuit, as shown in Figure 4.When signal input, and second harmonic is passing through
Cross Z1,Z2,Z3It is suppressed when three sections of microstrip lines, and to realize that second harmonic inhibits, be f in working frequency0When, Zin1In f=
2f0Meet formula (1), leaves fundamental wave and triple-frequency harmonics.Specific formula for calculation is as follows:
Wherein
Harmonic rejection module the second part is that second harmonic inhibits similar with first part, it includes Z4, Z5Both ends section
Microstrip line is connected in series, microstrip line Z5One end is open circuit, as shown in Figure 5.When input signal input, triple-frequency harmonics is suppressed, because
This both ends is in f=3f0Place's microstrip line will meet (4), be left fundamental wave and second harmonic.Specific formula for calculation is as follows:
Wherein
The harmonic controling module described includes two parts, and first part is triple-frequency harmonics open circuit control section, it is wrapped
Include Z6,Z7Both ends microstrip line is parallel with one another, microstrip line Z7One end is open circuit, as shown in Figure 4.To guarantee triple-frequency harmonics open circuit, first want
It is allowed to realize short circuit in A point, so needing to meet formula (6), one section in parallelMicrostrip line, according to the spy of microstrip line
Property can allow triple-frequency harmonics to open a way.
Wherein
Harmonic controling circuit second part is second harmonic short circuit control section, it includes Z8,Z9It is in parallel, microstrip line Z9
One end is open circuit, as shown in Figure 5.To guarantee second harmonic open circuit, it is first allowed to realize short circuit in B point, so needing to meet formula
(7), one section in parallelMicrostrip line, second harmonic can be allowed short-circuit according to the characteristic of microstrip line.
Wherein
After two above core design is completed, in order to preferably reduce loss, can all there be one according to conventional power splitterTransmission line, so by calculating harmonic rejection module, harmonic controling module and adjustment module are designed to equivalentTransmission line.According toTransmission line impedance characteristic has formula (10).So can be calculated pair according to TLM transmission line matrix formula
Answer the resistance value and electrical length of microstrip line.
And overall function divides amplification module to be all due to two-waySo it is computationally almost the same, first according to Fig. 4 institute
Show, regards microstrip line in dotted line frame as an entirety, so it is set as a matrix, as shown in matrix form (9):
It is theoretical according to the microstrip line that is illustrated before, it is assumed that drain impedance it is known thatZ is freely arranged in wavelength impedance0, counted
The Z of calculatingLIt is matched for subsequent fundamental wave.Therefore, Z0In known situation, impedance is adjusted into microstrip line Z10,Z11,Z12Before
Harmonic circuit count power splitter, middle impedance adjustment module microstrip line Z together10,Z12It is connected in series.It can be f in frequency0Item
The numerical value of microstrip line is obtained under part by micro-strip matrix operation, specific calculating matrix such as (10), (11), (12) are shown:
Wherein θ1=β l1,θ6=β l6,θ7=β l7,θ10=β l10,θ12=β l12
Second road function sub-module as shown in figure 5, microstrip line first regards an entirety as in dotted line frame,
Such as square
Shown in configuration (13):
It is f in frequency0Under the conditions of, impedance is adjusted into microstrip line Z10,Z11,Z13Harmonic circuit before counts function together
Divide device, middle impedance adjustment module microstrip line Z10, Z13It is connected in series, the ginseng it can be concluded that the second road microstrip line is calculated by matrix
Number, such as matrix form (14), (15), shown in (16).
Wherein θ4=β l4,θ8=β l8,θ9=β l9,θ13=β l13
The occurrence that can be derived that each section of microstrip line according to the above two-way matrix formula, in conjunction with harmonics restraint before and
Harmonic controling module numerical value calculated can complete harmonic match module design.Finally with an isolation resistance by two-way
Signal separates, and avoids influencing each other.
The fundamental wave matching module described uses common T-type impedance matching, allows entire Circuit Matching.Matching way uses
Traditional smith original image matching method can be by ZoutIt is matched to target impedance ZL, wherein Z14It is adjusted for impedance of fundamental frequency, then micro-strip
Line Z15And Z17Connect last and upper Z16, fundamental wave module is as shown in Figure 6.And match the circuit come and meet formula (19),
(20),(21),(22)。
Wherein θ14=β l14,θ15=β l15,θ16=β l16,θ17=β l17
By principle analysis, the utility model can be different from conventional matching circuits, be realized more by harmonic wave branch
Accurate harmonic controling, so as to improve the efficiency of power amplifier.
Compared with prior art, the technical effect of the utility model is as follows: by branch control method so that harmonic wave
Control can be independently controlled, due to being substantially to drain voltage and current control, in order to improve F function in power amplifier harmonic controling
The efficiency of rate amplifier needs to guarantee that voltage and current is not overlapped as far as possible, is because power loss is voltage and current in this way
Product, when product is zero, i.e., perfect condition loss be zero.It is separately controlled and harmonic wave is allowed to interfere with each other reduction, and then reduce
The overlapping area of voltage and current reduces loss, so can be improved the efficiency of power.
Detailed description of the invention
Fig. 1 is conventional harmonic control circuit functional block diagram.
Fig. 2 is harmonic controling schematic block circuit diagram in the utility model.
Fig. 3 is Integrated design schematic block circuit diagram in the utility model
Fig. 4 is road module diagram on harmonic wave in the utility model.
Fig. 5 is road module diagram under harmonic controling in the utility model.
Fig. 6 is the utility model fundamental wave matching module schematic diagram.
Fig. 7 is integrated circuit structural schematic diagram in the utility model.
Fig. 8 is simulation result schematic diagram in the utility model.
Specific embodiment
It is specific embodiment of the utility model below, this programme is further elaborated.But the utility model is simultaneously unlimited
In these embodiments.
Referring to fig. 2, a kind of functional block diagram of branch harmonic controling circuit of the utility model, including power splitter mould are shown
Block, first harmonic control loop, second harmonic control loop and fundamental wave matching module, wherein
The power splitter module is connected with power amplifier output end, for power signal to be divided into two-way output；
Isolation resistance is set between the first harmonic control loop and second harmonic control loop；
The first harmonic control loop is connected with an output end of the power splitter module, at least setting first harmonic
Suppression module, first harmonic control module and the first impedance adjustment module, the first harmonic suppression module is for retaining three times
Harmonic wave simultaneously filters out other harmonic waves；First harmonic control module is for controlling triple-frequency harmonics；The first impedance adjustment module is used
In carrying out impedance adjusting to second harmonic control loop and export power signal and give fundamental wave matching module；
The second harmonic control loop is connected with another output end of the power splitter module, and it is humorous to be at least arranged second
Wave suppression module, second harmonic control module and the second impedance adjustment module, the second harmonic suppression module is for retaining two
Subharmonic simultaneously filters out other harmonic waves；Second harmonic control module is for controlling second harmonic；The second impedance adjustment module
Fundamental wave matching module is given for second harmonic control loop to be carried out impedance adjusting and exported power signal；
The fundamental wave matching module is connected with the first harmonic control loop and second harmonic control loop, and being used for will
Power output is to load.
In above-mentioned technical proposal, the method controlled by branch, the harmonic controling allowed is independently controlled, due to
It in power amplifier harmonic controling, in order to improve the efficiency of F power amplifier, is needed as far as possible to drain voltage and current control
Guarantee that voltage and current is not overlapped, be in this way because power loss is the product of voltage and current, it is when product is zero, i.e., ideal
State losses are zero.It is separately controlled and harmonic wave is allowed to interfere with each other reduction, and then reduce the overlapping area of voltage and current, reduce damage
Consumption, so can be improved the efficiency of power.
Referring to Fig. 3, show a kind of functional block diagram of preferred embodiment of the utility model, first harmonic control loop and
Second harmonic control loop Integrated design is in power splitter module.By the way that power splitter and harmonic wave control loop are integrally designed, from
And guarantee that overall losses are smaller.
The design process of the utility model branch harmonic controling circuit described below:
First require the centre frequency f of this circuit0=1.5Gz needs to assist software by ADS while design, pass through
Emulation obtains impedance of fundamental frequency, second harmonic impedance, triple-frequency harmonics impedance are respectively Zin=20.74+j*11.68, Zin (2f0)=
20.49+j*3.77, Zin (3f0)=9.57+j*5.42.Its harmonic controling match circuit is achieved by the steps of:
Step 1: design secondary harmonic suppression circuit, because Z11 is impedance adjustment module, it is possible thereby to select freely to set
It sets, therefore, in order to ensure that not generating negative effects that can play impedance adjusting and have and being arranged to short and wide microstrip line as far as possible.It is setting simultaneously
Meter second harmonic inhibition only needs to meet formula (23), Z is debugged by ADS again in (24), (25)1, Z2, Z3, L1, L2, L3, can be real
Inhibit at present second harmonic.Then impedance Z is converted into width W with ADS crossover tool, finally obtains W1=4.96mm, L1=
9.05mm W2=3.54mm, L2=4.68mm, W3=2.40mm, L3=4.39mm, W11=6.96mm, L11=1.26mm.
Step 2: design triple-frequency harmonics suppression circuit, the Zin (3f that load balance factor obtains0), formula (27), (28), (29)
And the Z being freely arranged before11Width and length.W is finally obtained with crossover tool by ADS debugging4=8.38mm, L4
=7.72mm, W5=7.53mm, L5=6.2mm.
Step 3: design triple-frequency harmonics open circuit and second harmonic short circuit, according to the above analysis, by formula (30), (31),
(32), (33) calculate corresponding resistance value, then obtain W by ADS impedance transformation tool6=2.11mm, L6=8.76mm, W7=
4.58mm L7=8.34mm, W8=7.15mm, L8=10.24mm, W9=6.675mm, L9=1.07mm.
Step 4: designing power splitter integrated circuit in conjunction with foregoing circuit module and impedance adjustment module, calculates herein equal
Be frequency be f0Under the conditions of calculated, it is known that impedance of fundamental frequency, Zin=20.74+j*11.68, Z0Freely be arranged, setting when
It waits and pays attention to considering Z0Impedance when will affect fundamental wave matching, is arranged Z here0=30 Ω pass through Matrix Formula, ADS impedance transformation work
W is finally obtained after tool and fine tuning10=4.11mm, L10=3.82mm, W12=6.29mm, L12=8.48mm, W13=4.01mm,
L13=6.77mm.Isolation resistance R=50 Ω.
Wherein
Wherein
Step 5: design fundamental wave matching module, fundamental wave matching before due to function set up separately meter it is equivalent in order toTransmission line, Z0
If according to formula (40) it can be concluded that Zout=32.76-j*18.45, ZL=50 Ω are then according to formula (41), (42), (43),
(44), W then is finally obtained after ADS crossover tool and fine tuning14=2.49mm, L14=3.25, W15=1.07mm, L15
=2.21mm, W16=2.11mm, L16=7.15mm, W17=4.88mm, L17=6.48mm.
According to the theory described above, circuit simulation, simulation result such as Fig. 8, it can be seen that defeated are carried out by ADS
Enter close to when being saturated, efficiency has reached 87% or more.
Above embodiments are merely used to help understand the method and core concept of the utility model, corresponding the art
For those of ordinary skill, without departing from the principle of this utility model, the utility model can also be carried out several
Improvement and modification, these improvement and modification are also fallen into the utility model claims protection scope.To the more of these embodiments
Kind modification is it will be apparent that General Principle defined herein can be not for those skilled in the art
It is realized in other embodiments in the case where the spirit or scope for being detached from the utility model.Therefore, the utility model will not be by
These embodiments shown in the application are limited to, and are to fit to consistent with principle disclosed in the present application and features of novelty
Widest scope.
Claims (10)
1. a kind of branch harmonic controling circuit, which is characterized in that including power splitter module, first harmonic control loop, second humorous
Wave control loop and fundamental wave matching module, wherein
The power splitter module is connected with power amplifier output end, for power signal to be divided into two-way output；
Isolation resistance is set between the first harmonic control loop and second harmonic control loop；
The first harmonic control loop is connected with an output end of the power splitter module, and at least setting first harmonic inhibits
Module, first harmonic control module and the first impedance adjustment module, the first harmonic suppression module is for retaining triple-frequency harmonics
And filter out other harmonic waves；First harmonic control module is for controlling triple-frequency harmonics；The first impedance adjustment module for pair
Second harmonic control loop carries out impedance adjusting and exports power signal to give fundamental wave matching module；
The second harmonic control loop is connected with another output end of the power splitter module, and at least setting second harmonic presses down
Molding block, second harmonic control module and the second impedance adjustment module, the second harmonic suppression module are secondary humorous for retaining
Wave simultaneously filters out other harmonic waves；Second harmonic control module is for controlling second harmonic；The second impedance adjustment module is used for
Second harmonic control loop is carried out impedance adjusting and exports power signal to give fundamental wave matching module；
The fundamental wave matching module is connected with the first harmonic control loop and second harmonic control loop, is used for power
It exports to load.
2. branch harmonic controling circuit according to claim 1, which is characterized in that the first harmonic control loop and
Two harmonic controling circuit Integrated designs are in power splitter module.
3. branch harmonic controling circuit according to claim 1 or 2, which is characterized in that the power splitter module is equal part
Power splitter, using Wilkinson power divider.
4. branch harmonic controling circuit according to claim 3, which is characterized in that the first harmonic suppression module is into one
Step includes its microstrip transmission line Z1、Z2、Z3Mutually concatenate.
5. branch harmonic controling circuit according to claim 3, which is characterized in that the first harmonic control module is into one
Step includes its microstrip transmission line Z6、Z7Mutually and connect.
6. branch harmonic controling circuit according to claim 3, which is characterized in that the first impedance adjustment module is into one
Step includes its microstrip transmission line Z10、Z12Mutually concatenate.
7. branch harmonic controling circuit according to claim 3, which is characterized in that the second harmonic suppression module is into one
Step includes its microstrip transmission line Z4、Z5It is connected in series.
8. branch harmonic controling circuit according to claim 3, which is characterized in that the second harmonic control module is into one
Step includes its microstrip transmission line Z8、Z9Mutually and connect.
9. branch harmonic controling circuit according to claim 3, which is characterized in that the second impedance adjustment module is into one
Step includes its microstrip transmission line Z10、Z13Mutually concatenate.
10. branch harmonic controling circuit according to claim 3, which is characterized in that the fundamental wave matching module uses T
Type impedance matching includes at least microstrip line Z14, microstrip line Z15, microstrip line Z16With microstrip line Z17, wherein the microstrip line Z15With
Microstrip line Z17After series connection with the microstrip line Z16And it connects；The microstrip line Z14It is adjusted for impedance of fundamental frequency.
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| CN201920379089.5U CN209608616U (en) | 2019-03-25 | 2019-03-25 | A kind of branch harmonic controling circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920379089.5U CN209608616U (en) | 2019-03-25 | 2019-03-25 | A kind of branch harmonic controling circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981055A (en) * | 2019-03-25 | 2019-07-05 | 杭州电子科技大学富阳电子信息研究院有限公司 | A kind of branch harmonic controling circuit |
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2019
- 2019-03-25 CN CN201920379089.5U patent/CN209608616U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981055A (en) * | 2019-03-25 | 2019-07-05 | 杭州电子科技大学富阳电子信息研究院有限公司 | A kind of branch harmonic controling circuit |
| CN109981055B (en) * | 2019-03-25 | 2023-12-05 | 杭州电子科技大学富阳电子信息研究院有限公司 | Shunt harmonic control circuit |
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Granted publication date: 20191108 Effective date of abandoning: 20231205 |