CN110289819A - A kind of output matching network of radio-frequency front-end and its radio-frequency power amplifier - Google Patents
A kind of output matching network of radio-frequency front-end and its radio-frequency power amplifier Download PDFInfo
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- CN110289819A CN110289819A CN201910600160.2A CN201910600160A CN110289819A CN 110289819 A CN110289819 A CN 110289819A CN 201910600160 A CN201910600160 A CN 201910600160A CN 110289819 A CN110289819 A CN 110289819A
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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
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
- H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a kind of output matching networks of radio-frequency power amplifier, comprising: the first inductance, choke induction, second harmonic resonance circuit and triple-frequency harmonics resonance circuit；The first end of first inductance is connected with the output end of amplifying circuit, the first end of choke induction and the first end of second harmonic resonance circuit respectively, and the second end of the first inductance is connect with the first end of triple-frequency harmonics resonance circuit；The second end of choke induction is connect with the first DC power supply, and the second end of second harmonic resonance circuit and the second end of triple-frequency harmonics resonance circuit are grounded；Second harmonic resonance circuit includes the second inductance and the second capacitor being connected in series；Triple-frequency harmonics resonance circuit includes the third inductance and third capacitor being connected in series.Power consumption is reduced conducive to the efficiency for improving radio-frequency power amplifier using the scheme of the application, present invention also provides a kind of radio-frequency front-ends, have corresponding effect.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of radio-frequency front-end and its radio-frequency power amplifier
Output matching network.
Background technique
With the development of wireless mobile telecommunication technology, wireless communication system to the system performance requirements of radio-frequency front-end increasingly
Height, and the radio-frequency power amplifier in radio-frequency front-end is the core component for realizing the signal transmission of high efficiency, high quality, also,
The power consumption of radio-frequency power amplifier is also in occupation of main status in the power consumption of whole system.Therefore, radio-frequency power amplifier
It needs to improve efficiency, power consumption is reduced, to improve the performance of communication terminal.
Fig. 1 is seen, is the structural schematic diagram of the transmitting path of typical power amplifier, including input matching network, is put
Big circuit, usually power transistor, DC bias circuit and output matching network.Fig. 2 is seen, is traditional F class function
The schematic equivalent circuit of rate amplifier realizes the shaping of output voltage electric current by adjusting harmonic wave.Wherein, even-order harmonic is short
Road and odd harmonic are opened a way so that the voltage waveform in collector is square wave, reduce the weight of collector current and voltage in the time domain
Folded degree, reduces the DC losses of transistor, thus the efficiency of boost amplifier.And in general, it is contemplated that output matching
The requirement that network is easily achieved and minimizes, while in order to avoid there is biggish insertion loss, output matching network is generally only right
Second harmonic and triple-frequency harmonics, which are realized, inhibits shaping.
It should be noted that Fig. 2 is schematic equivalent circuit, the component being arranged in Fig. 2 has inductance L3, capacitor C3 to grip
Galvanic electricity sense Lc, inductance L2, capacitor C2, inductance L and capacitor C.And what capacitor C0 was indicated is that transistor in amplifying circuit generates
Inevitable parasitic capacitance.Also, choke induction Lc is the choke induction of DC power supply terminal, i.e., it connects with DC power supply terminal
It connects, the connection of remaining DC power supply terminal is not showed that in Fig. 2 but is grounded, expression is to be equivalent to connect for exchange input
Ground, Lc and C0 can participate in impedance network matching.
In Fig. 2, L3 and C3 constitute series connection triple-frequency harmonics antiresonant circuit, and it is humorous that L2 and C2 constitute second harmonic series connection in parallel
Vibration circuit often will appear when carrying out impedance matching and need L3 being configured larger, C3 is smaller, or by C3 be configured compared with
Greatly, L3 is configured lesser situation, so that the size disparity of the two devices is larger, sky needed for the two devices are placed in parallel connection
Between it is larger, and the conducting wire needed is also very long, and since conducting wire can also have inductance, impedance matching will be made unbalance, reduces
Efficiency increases power consumption.
In conclusion how to be designed to the output matching network of radio-frequency power amplifier, radio-frequency power amplification is improved
The efficiency of device reduces power consumption, is current those skilled in the art technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of radio-frequency front-end and its output matching networks of radio-frequency power amplifier, to improve
The efficiency of radio-frequency power amplifier reduces power consumption.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of output matching network of radio-frequency power amplifier, comprising: the first inductance, choke induction, second harmonic resonance
Circuit and triple-frequency harmonics resonance circuit；
The first end of first inductance respectively with the output end of amplifying circuit, the first end of the choke induction and institute
State the first end connection of second harmonic resonance circuit, the of the second end of first inductance and the triple-frequency harmonics resonance circuit
One end connection；
The second end of the choke induction is connect with the first DC power supply, the second end of the second harmonic resonance circuit and
The second end of the triple-frequency harmonics resonance circuit is grounded；
The second harmonic resonance circuit includes the second inductance and the second capacitor being connected in series, and the of second inductance
First end of the first end of one end or second capacitor as the second harmonic resonance circuit；The triple-frequency harmonics resonance
Circuit includes the third inductance and third capacitor being connected in series, and the of the first end of the third inductance or the third capacitor
First end of the one end as the triple-frequency harmonics resonance circuit.
Preferably, further includes:
First end is connect with the output end of the amplifying circuit, the first capacitor of second end ground connection.
Preferably, further includes:
First end is connect with the second end of first inductance, the 4th electricity that second end is connect with the first end of the 4th capacitor
Sense；And the output end of output matching network of the second end of the 4th inductance as radio-frequency power amplifier；
The 4th capacitor of second end ground connection.
Preferably, first inductance is the inductance formed by snakelike cabling or annular cabling, the choke induction
To pass through the inductance of snakelike cabling or the formation of pitch of the laps cabling.
Preferably, the inductance value of first inductance is the inductance value determined by following steps:
Obtain the setting value n of first network matching attribute1With the setting value n of the second net mate factor2；
According to the setting value n of the first network matching attribute1, the setting value n of the second net mate factor2, described
The output resistance R of amplifying circuitSAnd load resistance RL, determine the inductance value L of first inductance1。
Preferably, the inductance value L for first inductance determined1It indicates are as follows:
Wherein,G2For the position of the first end of the 4th inductance
The inverse for the output resistance set, it is L that first inductance, which is equivalent to inductance value,mNo.1 inductance and inductance value be LnNo. two electricity
Sense series connection, G1For the inverse of the No.1 inductance and the output resistance of the position of the connecting pin of No. two inductance；w0For fundamental wave frequency
Rate.
Preferably, the inductance value of second inductance, the capacitance of second capacitor and the electricity of the choke induction
Inductance value is the numerical value determined by following steps；
Obtain the setting value C of the first capacitor1, and detect the parasitic capacitance C of the amplifying circuit0；
According to equation group:The choke induction determined
Inductance value LCIt indicates are as follows:
The capacitance C for second capacitor determined2It indicates are as follows:
The inductance value L for second inductance determined2It indicates are as follows:
Wherein, equivalent capacity Cp=C1+C0,
Preferably, according to equation group:The inductance value L for the third inductance determined3It indicates
Are as follows:The capacitance C for the third capacitor determined3It indicates are as follows:Wherein,
Preferably, the inductance value L for the 4th inductance determined4It indicates are as follows:Described determined
The capacitance C of four capacitors4It indicates are as follows:Wherein,
A kind of radio-frequency front-end, the output matching network including radio-frequency power amplifier described in any of the above embodiments.
Using scheme provided by the embodiment of the present invention, comprising: the first inductance, choke induction, second harmonic resonance circuit
And triple-frequency harmonics resonance circuit.Compared to traditional scheme, the scheme of the application has redesigned resonance circuit, that is, uses π
The structure of type network, second harmonic resonance circuit and triple-frequency harmonics resonance circuit therein are series resonant circuit, specifically
, second harmonic resonance circuit includes the second inductance and the second capacitor being connected in series, the first end of the second inductance or second
First end of the first end of capacitor as second harmonic resonance circuit；Triple-frequency harmonics resonance circuit includes the third electricity being connected in series
Sense and third capacitor, the first end of third inductance or the first end of third capacitor as triple-frequency harmonics resonance circuit first
End.As can be seen that since there is no the design of the parallel resonance slot in traditional scheme, therefore it is more convenient in device arrangements,
The generation for the case where impedance matching caused by parallel resonance slot is unbalance, reduces efficiency will not occur, i.e. the design of the application has
Conducive to the efficiency for improving radio-frequency power amplifier, power consumption is reduced.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the transmitting path of typical power amplifier；
Fig. 2 is the schematic equivalent circuit of traditional F power-like amplifier；
Fig. 3 is a kind of structural schematic diagram of the output matching network of radio-frequency power amplifier in the present invention；
Fig. 4 shows for the equivalent of output matching network of the radio-frequency power amplifier in specific embodiment a kind of in the present invention
It is intended to；
Fig. 5 shows for the structure of the output matching network of the radio-frequency power amplifier in specific embodiment a kind of in the present invention
It is intended to；
Fig. 6 shows for the equivalent of output matching network of the radio-frequency power amplifier in specific embodiment a kind of in the present invention
It is intended to；
Fig. 7 is directed to three times for the output matching network of the radio-frequency power amplifier in specific embodiment a kind of in the present invention
The equivalent schematic of harmonic wave；
Fig. 8 is a kind of emulation knot of the output matching network of the radio-frequency power amplifier in the present invention in specific embodiment
Fruit figure.
Specific embodiment
Core of the invention is to provide a kind of output matching network of radio-frequency power amplifier, is conducive to improve radio-frequency power
The efficiency of amplifier reduces power consumption.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 3, Fig. 3 is a kind of structural schematic diagram of the output matching network of radio-frequency power amplifier in the present invention,
The output matching network of the radio-frequency power amplifier includes: the first inductance L1, choke induction Lc, second harmonic resonance circuit and
Triple-frequency harmonics resonance circuit；
The first end of first inductance L1 respectively with the output end of amplifying circuit, the first end of choke induction Lc and secondary humorous
The first end of resonant circuit connects, and the second end of the first inductance L1 is connect with the first end of triple-frequency harmonics resonance circuit；
The second end of choke induction Lc is connect with the first DC power supply, the second end of second harmonic resonance circuit and humorous three times
The second end of resonant circuit is grounded；
Second harmonic resonance circuit includes the second inductance L2 being connected in series and the second capacitor C2, and the first of the second inductance L2
First end of the first end of end or the second capacitor C2 as second harmonic resonance circuit；Triple-frequency harmonics resonance circuit includes series connection
The first end of the third inductance L3 and third capacitor C3 of connection, third inductance L3 or the first end of third capacitor C3 are as three times
The first end of harmonic resonance circuit.
In the application, choke induction Lc can prevent radiofrequency signal from being leaked to the first DC power supply, the first direct current in Fig. 3
Source-representation is Vcc.
Choke induction Lc, second harmonic resonance circuit and triple-frequency harmonics resonance circuit constitute pin network structure, π type net
The local road design at the both ends of network structure carries out inhibition recycling to odd harmonic and even-order harmonic respectively at resonance circuit, thus real
The efficient performance indicator of existing power amplifier.
Specifically, second harmonic resonance circuit and triple-frequency harmonics resonance circuit are series resonant circuit, second harmonic
Resonance circuit includes the second inductance L2 and the second capacitor C2, the first end of the second inductance L2 or the second capacitor C2 being connected in series
First end of the first end as second harmonic resonance circuit, in Fig. 3, the first end of the second inductance L2 is humorous as second harmonic
The first end of vibration circuit, the second end of the second inductance L2 are connect with the first end of the second capacitor C2, the second end of the second capacitor C2
Ground connection.In other embodiments, can also using the first end of the second capacitor C2 as the first end of second harmonic resonance circuit,
I.e. by the location swap of the second inductance L2 and the second capacitor C2 in Fig. 3.
Correspondingly, triple-frequency harmonics resonance circuit is also series resonant circuit, the third inductance L3 including series connection and
Three capacitor C3 are reduced the odd harmonic of the output end output of output matching network by resonance, are primarily directed to triple-frequency harmonics.
Second harmonic resonance circuit reduces the even-order harmonic of the output end output of output matching network by resonance, is primarily directed to two
Subharmonic.
As can be seen that since second harmonic resonance circuit and triple-frequency harmonics resonance circuit are series resonant circuit,
It would not generate in the traditional scheme of Fig. 2, the space as needed for using device caused by parallel resonance slot is big, conducting wire is long, causes
The unbalance situation of impedance matching.
In a kind of specific embodiment of the invention, can also include:
The connection of the output end of first end and amplifying circuit, the first capacitor of second end ground connection.
When carrying out impedance matching, need to consider the influence of parasitic capacitance, and parasitic capacitance can not be adjusted, and may will affect
The setting of relevant device parameters.For example, the inductance value needs for calculating the first inductance L1 are set after the calculating of progress impedance matching
Set very small, if selecting the first inductance L1 of this very small inductance value in practical applications, not only higher cost is real
Existing difficulty is big, and since conducting wire is there is also inductance, the inductance value in actual circuit is just easy to deposit between Theoretical Design value
In biggish deviation, and then influence the efficiency and bandwidth of power amplifier.
Therefore, in this kind of embodiment, first capacitor is increased in the output end of amplifying circuit, such as amplifying circuit is three
Pole pipe, then the first end of first capacitor is connect with the collector of the triode, second end ground connection.
And it should be noted that in Fig. 4, what capacitor Cp was indicated be first capacitor and parasitic capacitance collectively constitutes and
Join capacitor, for example, the capacitance of first capacitor is C1, the capacitance of parasitic capacitance is C0, then the capacitance C of equivalent capacity CppTable
It is shown as Cp=C1+C0.That is Fig. 4 is equivalent schematic rather than actual structure chart.In addition, in Fig. 4, for exchange input,
Choke induction Lc is equivalent to be grounded.
As can be seen that equivalent capacity Cp can participate in impedance matching, and since the capacitance of first capacitor can be preparatory
It freely sets, just makes the capacitance of equivalent capacity Cp adjustable, compared to the parasitic capacitance that can not be adjusted in traditional scheme,
Such mode increases freedom degree, is conducive to more easily realize impedance matching, is conducive to avoid the occurrence of other devices of setting
The case where extreme parameters occurred when the parameter of part.
Further, in a kind of specific embodiment of the invention, can also include:
First end is connect with the second end of the first inductance L1, the 4th electricity that second end is connect with the first end of the 4th capacitor C4
Feel L4；And the 4th inductance L4 second end as radio-frequency power amplifier output matching network output end；
4th capacitor C4 of second end ground connection.
For right side impedance RLFor, the shunt capacitance of L-type network can reduce the real part resistance value of its impedance, i.e., the 4th electricity
The setting for holding C4, can realize the function of impedance transformation with extension system bandwidth.When introducing the 4th capacitor C4, simultaneously due to meeting
Introduce the susceptance amount of imaginary part, it is therefore desirable to add concatenated 4th inductance L4, to generate resonance therewith, offset the imaginary part electricity of introducing
The amount of receiving.
Using scheme provided by the embodiment of the present invention, comprising: the first inductance, choke induction, second harmonic resonance circuit
And triple-frequency harmonics resonance circuit.Compared to traditional scheme, the scheme of the application has redesigned resonance circuit, that is, uses π
The structure of type network, second harmonic resonance circuit and triple-frequency harmonics resonance circuit therein are series resonant circuit, specifically
, second harmonic resonance circuit includes the second inductance and the second capacitor being connected in series, the first end of the second inductance or second
First end of the first end of capacitor as second harmonic resonance circuit；Triple-frequency harmonics resonance circuit includes the third electricity being connected in series
Sense and third capacitor, the first end of third inductance or the first end of third capacitor as triple-frequency harmonics resonance circuit first
End.As can be seen that since there is no the design of the parallel resonance slot in traditional scheme, therefore it is more convenient in device arrangements,
The generation for the case where impedance matching caused by parallel resonance slot is unbalance, reduces efficiency will not occur, i.e. the design of the application has
Conducive to the efficiency for improving radio-frequency power amplifier, power consumption is reduced.
In a kind of specific embodiment of the invention, the first inductance is to be formed by snakelike cabling or annular cabling
Inductance, choke induction are the inductance formed by snakelike cabling or pitch of the laps cabling.
In Fig. 5, the first inductance L1 and choke induction Lc are the inductance formed by pitch of the laps cabling, compared to it is snakelike walk
Line, the inductance that the mode of pitch of the laps cabling is formed can be larger.It certainly, can be with if the inductance needed in practical matter is lower
It is chosen for the mode of snakelike cabling, has no effect on implementation of the invention.Pcb board in Fig. 5 is double-layer structure.Due to using snakelike
Cabling or pitch of the laps cabling form inductance, and it is more compact to advantageously allow structure.
In addition, if in practical applications, required inductance value is very low, then it can use conducting wire as inductance.Example
As Fig. 5 embodiment in, using the inductance of conducting wire as the second inductance L2 and third inductance L3.In Fig. 5, each capacitor is equal
Using patch type capacitor, the dotted line frame of corresponding position indicates patch location, and white edge indicates the metal in pcb board.
In a kind of specific embodiment of the invention, the inductance value of the first inductance is the electricity determined by following steps
Inductance value:
Obtain the setting value n of first network matching attribute1With the setting value n of the second net mate factor2；
According to the setting value n of first network matching attribute1, the setting value n of the second net mate factor2, amplifying circuit it is defeated
Resistance R outSAnd load resistance RL, determine the inductance value L of the first inductance1。
The setting of first network matching attribute and the second net mate factor, different occasions can be carried out by staff
In, first network matching attribute and the second net mate factor can have different setting values, not shadow implementation of the invention.
It, can be in conjunction with the defeated of amplifying circuit after setting first network matching attribute and the second net mate factor
Resistance R outSAnd load resistance RL, determine the inductance value L of the first inductance1.The output resistance R of amplifying circuitSInspection can be passed through
It surveys and obtains, and load resistance RLFixed value is often regarded as in specific occasion, such as common for 50 Ω.
Specifically, seeing Fig. 6, in this embodiment, resistance R is converted into conductance G convenient for calculating, is determined
The inductance value L of first inductance1It indicates are as follows:
Wherein,G2For the position of the first end of the 4th inductance
Output resistance inverse, the first inductance be equivalent to inductance value be LmNo.1 inductance and inductance value be LnNo. two inductance series connection,
G1For the inverse of the output resistance of the position of the connecting pin of No.1 inductance and No. two inductance；w0For fundamental frequency.
As can be seen that setting n1And n2Value, namely setting G1And G2Value.GSFor the output resistance R of amplifying circuitS
Inverse, GLFor load resistance RLInverse.It is L since the first inductance is equivalent to inductance valuemNo.1 inductance be with inductance value
LnNo. two inductance series connection, therefore, the inductance value L of the first inductance1Equal to LmAnd LnSeries value, and susceptance B1Equal to BmAnd Bn's
Parallel value.
The net mate factor is equivalent to the intermediate conductance G of pin network1, intermediate conductance G1Also entire output matching network is influenced
Harmonic wave shaping ability and bandwidth performance, therefore conductance G among Rational choice1, the G under pin network can be completedSWith G2
Matching.Then, network parts fundamental frequency w can be obtained further according to pin network shift theory0Susceptance, B can be obtained1, B2,
B3.Due to susceptance B1It only include inductance element, by solving the fundamental relation of conductance and inductance, the electricity of you can get it the first inductance
Inductance value L1。
That is, the B obtained1, B2, B3It can indicate are as follows:I.e.Therefore,
In a kind of specific embodiment of the invention, the inductance value of the second inductance and is gripped at the capacitance of the second capacitor
The inductance value of galvanic electricity sense is the numerical value determined by following steps；
Obtain the setting value C of first capacitor1, and detect the parasitic capacitance C of amplifying circuit0；
According to equation group:The electricity for the choke induction determined
Inductance value LCIt indicates are as follows:
The capacitance C for the second capacitor determined2It indicates are as follows:
The inductance value L for the second inductance determined2It indicates are as follows:
Wherein, equivalent capacity Cp=C1+C0,
The capacitance C of first capacitor1It is set by staff, and can according to need and be adjusted, can seen
Out, the capacitance of first capacitor is modified, the inductance value L of choke induction can be madeC, the capacitance C of the second capacitor2And second
The inductance value L of inductance2Calculated value change, it can by choosing suitable first capacitor value, so that the application's is defeated
Matching network is more easily realized out, that is, the parameter of the device in output matching network can be made to be in suitable range, into
And it is conducive to the implementation of scheme.
Equivalent capacity Cp, choke induction LCAnd the second capacitor C in second harmonic resonance circuit2, the second inductance L2,
Fundamental frequency w0The admittance of lower generation and B2It is equal, therefore it can be concluded that each device and B2Relationship, i.e.,And since second harmonic resonance circuit is zero to the reactance of second harmonic,
It can be concluded that L2With C2Correlation to get go out
And since triple-frequency harmonics resonance circuit is directly by third harmonic frequencies 3w0It is shorted to ground, i.e.,
Therefore equivalent circuit sees Fig. 7, which needs to realize the function of opening a way to triple-frequency harmonics, i.e. susceptance is equal to zero, because
This is it can be concluded that L1With Cp, LC, C2, L2Relationship, it can obtain
Therefore, it can find out:
In a kind of specific embodiment of the invention, according to equation group:The third determined
The inductance value L of inductance3It indicates are as follows:The capacitance C for the third capacitor determined3It indicates are as follows:Its
In,
Specifically, fundamental frequency w0Admittance in triple-frequency harmonics resonance circuit, with the B after pin network changes3It is equal,
I.e.In addition, the resonance circuit is zero to the reactance of triple-frequency harmonics, therefore it can be concluded that the resonance circuit
Middle L3With C3Correlation, i.e.,The two conditions of simultaneous, can be calculated the inductance of third inductance
Value L3And the capacitance C of third capacitor3。
In a kind of specific embodiment of the invention, according to the shift theory of L-type network, the 4th inductance determined
Inductance value L4It indicates are as follows:The capacitance C for the 4th capacitor determined4It indicates are as follows:Wherein,M is to realize conductance GLTo conductance G2Conversion defined in the net mate factor.
After the parameter for determining each device, circuit simulation verification can be carried out, as shown in figure 8, wherein for dB (S (2,
It 1) is) positive transmission coefficient, dB (S (1,1)) is insertion loss.As can be seen that the application scheme have low insertion loss with
And higher harmonics rejection ability.
Corresponding to above embodiment, the embodiment of the invention also provides a kind of radio-frequency front-ends, including any of the above-described implementation
The output matching network of radio-frequency power amplifier in example can correspond to each other reference with above.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. a kind of output matching network of radio-frequency power amplifier characterized by comprising the first inductance, choke induction are secondary
Harmonic resonance circuit and triple-frequency harmonics resonance circuit；
The first end of first inductance respectively with the output end of amplifying circuit, the first end of the choke induction and described two
The first end of subharmonic resonance circuit connects, the first end of the second end of first inductance and the triple-frequency harmonics resonance circuit
Connection；
The second end of the choke induction is connect with the first DC power supply, the second end of the second harmonic resonance circuit and described
The second end of triple-frequency harmonics resonance circuit is grounded；
The second harmonic resonance circuit includes the second inductance and the second capacitor being connected in series, the first end of second inductance
Or first end of the first end of second capacitor as the second harmonic resonance circuit；The triple-frequency harmonics resonance circuit
Third inductance and third capacitor including series connection, the first end of the first end of the third inductance or the third capacitor
First end as the triple-frequency harmonics resonance circuit.
2. the output matching network of radio-frequency power amplifier according to claim 1, which is characterized in that further include:
First end is connect with the output end of the amplifying circuit, the first capacitor of second end ground connection.
3. the output matching network of radio-frequency power amplifier according to claim 1, which is characterized in that further include:
First end is connect with the second end of first inductance, the 4th inductance that second end is connect with the first end of the 4th capacitor；
And the output end of output matching network of the second end of the 4th inductance as radio-frequency power amplifier；
The 4th capacitor of second end ground connection.
4. the output matching network of radio-frequency power amplifier according to any one of claims 1 to 3, which is characterized in that institute
To state the first inductance be by the snakelike cabling inductance choke induction that perhaps annular cabling is formed be by snakelike cabling or
The inductance that pitch of the laps cabling is formed.
5. the output matching network of radio-frequency power amplifier according to claim 3, which is characterized in that first inductance
Inductance value be the inductance value determined by following steps:
Obtain the setting value n of first network matching attribute1With the setting value n of the second net mate factor2；
According to the setting value n of the first network matching attribute1, the setting value n of the second net mate factor2, the amplification
The output resistance R of circuitSAnd load resistance RL, determine the inductance value L of first inductance1。
6. the output matching network of radio-frequency power amplifier according to claim 5, which is characterized in that determines is described
The inductance value L of first inductance1It indicates are as follows:
Wherein,G2For the position of the first end of the 4th inductance
Output resistance inverse, first inductance be equivalent to inductance value be LmNo.1 inductance and inductance value be LnNo. two inductance
Series connection, G1For the inverse of the No.1 inductance and the output resistance of the position of the connecting pin of No. two inductance；w0For fundamental wave frequency
Rate.
7. the output matching network of radio-frequency power amplifier according to claim 6, which is characterized in that second inductance
Inductance value, the capacitance of second capacitor and the inductance value of the choke induction are the number determined by following steps
Value；
Obtain the setting value C of the first capacitor1, and detect the parasitic capacitance C of the amplifying circuit0；
According to equation group:The electricity for the choke induction determined
Inductance value LCIt indicates are as follows:
The capacitance C for second capacitor determined2It indicates are as follows:
The inductance value L for second inductance determined2It indicates are as follows:
Wherein, equivalent capacity Cp=C1+C0,
8. the output matching network of radio-frequency power amplifier according to claim 6, which is characterized in that according to equation group:The inductance value L for the third inductance determined3It indicates are as follows:That determines is described
The capacitance C of third capacitor3It indicates are as follows:Wherein,
9. the output matching network of radio-frequency power amplifier according to claim 6, which is characterized in that determines is described
The inductance value L of 4th inductance4It indicates are as follows:The capacitance C for the 4th capacitor determined4It indicates are as follows:Wherein,
10. a kind of radio-frequency front-end, which is characterized in that including radio-frequency power amplifier as described in any one of claim 1 to 9
Output matching network.
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| CN115955200A (en) * | 2022-12-31 | 2023-04-11 | 广州慧智微电子股份有限公司 | Amplifier circuit, amplifier and electronic equipment |
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