CN106253864A - A kind of radio-frequency power amplifier - Google Patents
A kind of radio-frequency power amplifier Download PDFInfo
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- CN106253864A CN106253864A CN201610656470.2A CN201610656470A CN106253864A CN 106253864 A CN106253864 A CN 106253864A CN 201610656470 A CN201610656470 A CN 201610656470A CN 106253864 A CN106253864 A CN 106253864A
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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
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
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Abstract
The invention discloses a kind of radio-frequency power amplifier, path is amplified including a radio frequency, radio frequency amplifies path and includes multistage amplifier circuit, multistage amplifier circuit includes at least one driving stage amplifier and at least one differential output stage amplifier, the outfan of driving stage amplifying circuit is connected with differential output stage amplifier by intervalve matching circuit, and the outfan of differential output stage amplifier is connected with output matching circuit；Wherein, intervalve matching circuit includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer, for realizing radiofrequency signal from non-equilibrium to the conversion of balance, output matching circuit includes exporting wideband balun impedance transformer, for difference radio-frequency signal being converted to single-ended radio frequency signal, couple with output gating circuit.Described radio-frequency power amplifier, only amplifies path with a radio frequency and can realize the multiband covering of 2G/3G/4G, simplify the framework of multimode multi-frequency radio frequency front-end chip, reduce cost.
Description
Technical field
The present invention relates to microelectronics technology, particularly relate to a kind of radio-frequency power amplifier.
Background technology
In prior art, for multimode multi-frequency (MMMB, the Multi-Mode Multi-Band) radio frequency of 2G, 3G, 4G pattern
Front-end chip includes GSM high band radio-frequency power amplifier, GSM low-frequency range radio frequency penetrates rate amplifier, 3G/4G low-frequency range
(700-915MHz) radio-frequency power amplifier, 3G/4G Mid Frequency (1710-2025MHz) radio-frequency power amplifier, each radio frequency merit
The output matching network of rate amplifier, MIPI interface and controller, input channel select switching switch, output Frequency Band Selection switching
Switch, radio-frequency antenna switch, 3G/4G high band radio-frequency antenna switch etc..Two duplexer groups are positioned at MMMB radio frequency front end chip
Off-chip, by with interior output Frequency Band Selection switching switch, the corresponding port of radio-frequency antenna switch is connected, it is achieved 3G/4G each not
Duplex capability with FDD frequency range.The all integrated functions of MMMB radio frequency front end chip, use GaAs technique to manufacture wherein radio frequency merit
The output stage tube core of rate amplifier, uses SOI technology to manufacture the portion in all switch tube cores therein and output matching network
Subelement, uses CMOS technology or SOI technology to manufacture MIPI interface therein and controller tube core, in output matching network
Subelement can also be realized by the metal level cabling on base plate for packaging or SMD element, between all tube cores and tube core with
Electrical interconnection between base plate for packaging realizes by the way of bonding wire or flip chip package.
It will be seen that multimode multi-frequency radio frequency front-end chip structure is complicated, with high costs, need to find a kind of method, it is possible to
Simplify the framework of multimode multi-frequency radio frequency front-end chip as much as possible, and effectively reduce its cost.
Summary of the invention
It is an object of the invention to provide a kind of radio-frequency power amplifier, simplify the framework of multimode multi-frequency radio frequency front-end chip,
Reduce production cost.
For solving above-mentioned technical problem, embodiments provide a kind of radio-frequency power amplifier, put including a radio frequency
Big path, described radio frequency amplifies path and includes that multistage amplifier circuit, described multistage amplifier circuit include that at least one driving stage is put
Big device and at least one differential output stage amplifier, the outfan of described driving stage amplifier passes through intervalve matching circuit with described
Differential output stage amplifier connects, and the outfan of described differential output stage amplifier is connected with output matching circuit；
Wherein, described intervalve matching circuit includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer, uses
In realizing radiofrequency signal from non-equilibrium to the conversion of balance, described output matching circuit includes exporting wideband balun impedance transformation
Device, for difference radio-frequency signal is converted to single-ended radio frequency signal, couples with output gating circuit.
Wherein, described inter-stage wideband balun impedance transformer includes transformator and the impedance transformation being connected with described transformator
Device, non-equilibrium prevention at radio-frequency port connects with one end of the outfan of described driving stage amplifier, the first coupling coil of described transformator
Connecing, the other end of the first coupling coil of described transformator is connected with the first input port of described impedance transformer, described change
One end ground connection of the second coupling coil of depressor, the other end is connected with the second input port of described impedance transformer, described resistance
First coupling coil of resistance parallel operation and the second coupling coil constitute the first coupled pair, the 3rd coupling coil and the 4th coupling
Coil constitutes the second coupled pair；The of one end of first coupling coil of described impedance transformer and described impedance transformer
One input port connects, and the other end is connected with the second end and first balanced signal port of described 3rd coupling coil, and described the
One end of two coupling coils is connected with the first end of described 3rd coupling coil and ground connection, the second coupling of described impedance transformer
Second end of coil is connected with second end of the 4th coupling coil of described impedance transformer, the second balanced signal port；Described
First end of the 4th coupling coil of impedance transformer is connected with the second input port of described impedance transformer.
Wherein, described output wideband balun impedance transformer includes the change of impedance transformer and the cascade of described impedance transformer
Depressor, the outfan of described differential output stage amplifier and the first balanced signal port of described impedance transformer and the second balance
Signal port connects, and described impedance transformer comprises 4 impedance coupler coils, constitutes two two-by-two to impedance coupler coil pair, resistance
Anti-first coupling coil constitutes impedance the first coupled pair, impedance the 3rd coupling coil and impedance with impedance the second coupling coil
4th coupling coil constitutes impedance the second coupled pair；First end of described impedance the first coupling coil and described first balance
Signal port, the first end of described impedance the 3rd coupling coil connect, and the second end of described impedance the first coupling coil is with described
The first input end of transformator connects, the first end of described impedance the second coupling coil and described second balanced signal port, institute
The first end stating impedance the 4th coupling coil connects, and the second end of described impedance the second coupling coil couples with described impedance the 3rd
Second end of coil connects and ground connection, and the second end of described impedance the 4th coupling coil connects with the second input of described transformator
Connecing, first end of transformation the first coupling coil of described transformator is connected with the first input end of described transformator, described transformation
First end of transformation the second coupling coil of device is connected with the second input of described transformator；Described transformation the first coupling coil
The second end be connected with non-equilibrium signal port, the second end ground connection of described transformation the second coupling coil
Wherein, the second end with described impedance the second coupling coil, described impedance the 3rd coupling coil the second end are also included
The choke induction connected, described choke induction is by connecting decoupling capacitor ground connection, described choke induction and described decoupling capacitor
Common port is connected with the supply voltage VDD of described differential output stage amplifier.
Wherein, described output gating circuit is the one that hilted broadsword throws in radio-frequency switch circuit, low pass filter, multiplexer more
Or multiple combination.
Wherein, also include the input gating circuit being connected with the input of described radio frequency amplification path and select with described input
Circuit passband connect controller, described controller for control by input described input gating circuit high-frequency input signal, in
Frequently radio frequency described in a kind of selected input in input signal and low-frequency input signal amplifies path.
Wherein, also include defeated with what the input of the input outfan of gating circuit and described driving stage amplifier was connected
Enter wideband balun.
Wherein, the non-equilibrium prevention at radio-frequency port of described inter-stage wideband balun and the outfan of described driving stage amplifier, transformation
One end of first coupling coil of device connects, and the other end of described first coupling coil and the first balanced signal port connect, the
One end ground connection of two coupling coils, other end is connected with the second balanced signal port.
Wherein, described multistage amplifier be use the one in GaAs HBT, GaAs pHEMT, SiGe, CMOS, SOI or
The multiple multistage amplifier made of person.
Wherein, described intervalve matching circuit and/or described output matching circuit are for being arranged on base plate for packaging or IPD tube core
Coupling coil or coupled transmission line composition.
The radio-frequency power amplifier that the embodiment of the present invention is provided, compared with prior art, has the advantage that
The radio-frequency power amplifier that the embodiment of the present invention provides, amplifies path including a radio frequency, and described radio frequency amplifies path
Including multistage amplifier circuit, described multistage amplifier circuit includes at least one driving stage amplifier and at least one differential output stage
Amplifier, the outfan of described driving stage amplifier is connected with described differential output stage amplifier by intervalve matching circuit, institute
The outfan stating differential output stage amplifier is connected with output matching circuit；
Wherein, described intervalve matching circuit includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer, uses
In realizing radiofrequency signal from non-equilibrium to the conversion of balance, described output matching circuit includes exporting wideband balun impedance transformation
Device, for difference radio-frequency signal is converted to single-ended radio frequency signal, couples with output gating circuit.
Described radio-frequency power amplifier, by amplifying driving stage amplifier and the differential output stage amplifier of path at radio frequency
Between connect intervalve matching circuit, and differential output stage amplifier connect output matching circuit, can realize cover 2G/3G/
The high, medium and low frequency range of 4G, the most only uses a radio frequency to amplify path, so that it may to realize the high, medium and low frequency range to 2G/3G/4G
All standing, simplifies the framework of multimode multi-frequency radio frequency front-end chip.And intervalve matching circuit and output matching circuit are only respectively
One inter-stage wideband balun or inter-stage balun impedance transformer and an output wideband balun impedance transformer, cost is relatively low, fall
The low cost of radio-frequency power amplifier.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
A kind of detailed description of the invention structural representation of the radio-frequency power amplifier that Fig. 1 provides for the embodiment of the present invention；
The another kind of detailed description of the invention structural representation of the radio-frequency power amplifier that Fig. 2 provides for the embodiment of the present invention；
The intervalve matching circuit one detailed description of the invention knot of the radio-frequency power amplifier that Fig. 3 provides for the embodiment of the present invention
Structure schematic diagram；
The intervalve matching circuit another kind detailed description of the invention of the radio-frequency power amplifier that Fig. 4 provides for the embodiment of the present invention
Structural representation；
The output matching circuit one detailed description of the invention knot of the radio-frequency power amplifier that Fig. 5 provides for the embodiment of the present invention
Structure schematic diagram；
The output matching circuit another kind detailed description of the invention of the radio-frequency power amplifier that Fig. 6 provides for the embodiment of the present invention
Structural representation.
Detailed description of the invention
The most as described in the background section, existing multimode multi-frequency radio frequency front-end chip structure is complicated, with high costs.
Based on this, the embodiment of the present invention is provided a kind of radio-frequency power amplifier, amplifies path including a radio frequency, described
Radio frequency amplifies path and includes that multistage amplifier circuit, described multistage amplifier circuit include at least one driving stage amplifier and at least one
Individual differential output stage amplifier, the outfan of described driving stage amplifier is put with described differential output stage by intervalve matching circuit
Big device connects, and the outfan of described differential output stage amplifier is connected with output matching circuit；
Wherein, described intervalve matching circuit includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer, uses
In realizing radiofrequency signal from non-equilibrium to the conversion of balance, described output matching circuit includes exporting wideband balun impedance transformation
Device, for difference radio-frequency signal is converted to single-ended radio frequency signal, couples with output gating circuit.
In sum, the radio-frequency power amplifier that the embodiment of the present invention provides, by amplifying the driving stage of path at radio frequency
Connect intervalve matching circuit between amplifier and differential output stage amplifier, and connect output matching at differential output stage amplifier
Circuit, can realize covering the high, medium and low frequency range of 2G/3G/4G, the most only uses a radio frequency to amplify path, so that it may it is right to realize
The all standing of the high, medium and low frequency range of 2G/3G/4G, simplifies the framework of multimode multi-frequency radio frequency front-end chip.And interstage matched is electric
Road and output matching circuit are only respectively an inter-stage wideband balun or inter-stage balun impedance transformer and an output broadband bar
Human relations impedance transformer, cost is relatively low, reduces the cost of radio-frequency power amplifier.
Understandable, below in conjunction with the accompanying drawings to the present invention for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
Detailed description of the invention be described in detail.
Elaborate detail in the following description so that fully understanding the present invention.But the present invention can with multiple not
Being same as alternate manner described here to implement, those skilled in the art can do class in the case of intension of the present invention
Like promoting.Therefore the present invention is not limited by following public being embodied as.
Refer to Fig. 1-6, a kind of detailed description of the invention knot of the radio-frequency power amplifier that Fig. 1 provides for the embodiment of the present invention
Structure schematic diagram；The another kind of detailed description of the invention structural representation of the radio-frequency power amplifier that Fig. 2 provides for the embodiment of the present invention；
The intervalve matching circuit one detailed description of the invention structural representation of the radio-frequency power amplifier that Fig. 3 provides for the embodiment of the present invention
Figure；The intervalve matching circuit another kind detailed description of the invention structure of the radio-frequency power amplifier that Fig. 4 provides for the embodiment of the present invention
Schematic diagram；The output matching circuit one detailed description of the invention knot of the radio-frequency power amplifier that Fig. 5 provides for the embodiment of the present invention
Structure schematic diagram；The output matching circuit another kind specific embodiment party of the radio-frequency power amplifier that Fig. 6 provides for the embodiment of the present invention
Formula structural representation.
In a kind of detailed description of the invention, described radio-frequency power amplifier, amplify path 100 including a radio frequency, described in penetrate
Frequency amplifies path 100 and includes that multistage amplifier circuit, described multistage amplifier circuit include at least one driving stage amplifier 130 and extremely
A few differential output stage amplifier 150, the outfan of described driving stage amplifier 130 passes through intervalve matching circuit 140 and institute
Stating differential output stage amplifier 150 to connect, the outfan of described differential output stage amplifier 150 is with output matching circuit 160 even
Connect；
Wherein, described intervalve matching circuit 140 includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer,
For realizing radiofrequency signal from non-equilibrium to the conversion of balance, described output matching circuit 160 includes exporting wideband balun impedance
Changer, for difference radio-frequency signal is converted to single-ended radio frequency signal, couples with output gating circuit 170.
Described radio-frequency power amplifier, is put by the driving stage amplifier 130 and differential output stage amplifying path at radio frequency
Connect intervalve matching circuit 140 between big device 150, and connect output matching circuit 160 at differential output stage amplifier 150, i.e.
Can realize covering the high, medium and low frequency range of 2G/3G/4G, the most only use a radio frequency to amplify path and can realize 2G/3G/4G's
The all standing of high, medium and low frequency range, simplifies the framework of multimode multi-frequency radio frequency front-end chip.And intervalve matching circuit 140 and output
Match circuit 160 is only an inter-stage wideband balun or inter-stage balun impedance transformer, output wideband balun impedance transformer, becomes
This is relatively low, reduces the cost of radio-frequency power amplifier.
In one embodiment, described radio frequency frequency power amplifier, comprise MIPI interface and controller 180, input and penetrate
Frequently gating switch 110, driving stage amplifier 130, intervalve matching circuit 140, differential output stage amplifier 150, output matching electricity
Road 160, output gating switch 170.Input radio frequency gating switch 110 is for inputting letter by the high frequency of radio-frequency power amplifier chip
The gating incision of one of number (HB_IN), IF input signals (MB_IN) and low-frequency input signal (LB_IN) enters into radio frequency and amplifies
Among path, input radio frequency gating switch 110 can be that hilted broadsword is thrown among radio-frequency switch circuit, low pass filter, multiplexer more
The combination of one or more；The outfan of input radio frequency gating switch 110 is connected to the input of driving stage amplifier 130；
Driving stage amplifier 130 is one and covers high frequency, intermediate frequency, the driving amplifier circuit of low frequency frequency range, and its output is connected to inter-stage
Match circuit 140；Intervalve matching circuit 140 is an inter-stage wideband balun or an inter-stage wideband balun impedance transformer, real
Non-equilibrium (Unbalanced) of existing radiofrequency signal is to balance (Balanced) conversion and the impedance transformation of necessity, and it exports
Two-way balanced signal is differential signal, has 180 degree of phase contrasts each other；The differential signal of intervalve matching circuit 140 output
Via differential output stage amplifier 150 power amplification；The output signal of differential output stage amplifier 150 remains in that difference shape
State, and it is input to output matching circuit 160；Output matching circuit 160 is an output wideband balun impedance transformer, it is achieved penetrate
Frequently the impedance transformation equilibrating to non-equilibrium conversion and necessity of signal, it is output as single-ended the penetrating through power amplifier process
Frequently signal, is connected to export gating circuit.Output gating circuit is a single pole multiple throw, and its different conducting states are by radio frequency
Amplify signal and direct into different prevention at radio-frequency port.It will be appreciated by persons skilled in the art that output gating circuit can also be
The combination of one or more among radio-frequency switch circuit, low pass filter, multiplexer thrown by hilted broadsword more.Owing to input radio frequency gates
Switch 110, driving stage amplifier 130, intervalve matching circuit 140, differential output stage amplifier 150, output matching circuit 160,
The broadband character of output gating circuit, can cover the high band of 2G/3G/4G, Mid Frequency, low-frequency range, i.e. 700MHz～
2.7GHz, radio-frequency power amplifier only needs a radio frequency to amplify path, simplifies the framework of multimode multi-frequency radio frequency front-end chip, and
There is low-cost advantage.
The effect of wideband balun is the radiofrequency signal that non-equilibrium input radio frequency signal is converted into balance, may not only enter
It is modulated after entering driving stage amplifier 130, it is also possible to modulated in advance before driving stage amplifier 130 amplifies, subtract
Follow-up processing pressure, the most described radio-frequency power amplifier also include outfan with input radio frequency gating switch 110 with
And the input wideband balun 120 that the input of described driving stage amplifier 130 connects.
So, after the radiofrequency signal described input wideband balun 120 of input that input radio frequency gating switch 110 is defeated, Jing Guosuo
State the process of input wideband balun 120, be output as a pair differential signal that phase contrast is 180 degree, be connected to driving stage amplifier
130 carry out differential amplification, and the driving stage amplifier 130 that this is certainly should use differential driving level amplifier.
A kind of form of intervalve matching circuit 140 is inter-stage wideband balun, the non-equilibrium radio frequency of described inter-stage wideband balun
The outfan of port and described driving stage amplifier 130, one end of the first coupling coil 1411 of transformator are connected, and described first
The other end of coupling coil 1411 and the first balanced signal port connect, one end ground connection of the second coupling coil 1412, and other one
End is connected with the second balanced signal port.
The another kind of form of intervalve matching circuit 140 is inter-stage wideband balun impedance transformer, described inter-stage wideband balun
Impedance transformer includes transformator 1410 and the impedance transformer 1420 being connected with described transformator, non-equilibrium prevention at radio-frequency port and institute
The one end of the first coupling coil 1411 stating the outfan of driving stage amplifier 130, described transformator 1410 connects, described transformation
The other end of the first coupling coil 1411 of device is connected with the first input port of described impedance transformer 1420, described transformator
One end ground connection of second coupling coil 1412 of 1410, the other end is connected with the second input port of described impedance transformer, institute
The first coupling coil 1421 and the second coupling coil 1422 of stating impedance transformer constitute the first coupled pair, the 3rd coupling line
Circle 1423 and the 4th coupling coil 1424 constitute the second coupled pair；First coupling coil 1421 of described impedance transformer
One end is connected with the first input port of described impedance transformer, the second end of the other end and described 3rd coupling coil 1423 and
First balanced signal port connects, one end of described second coupling coil 1422 and the first end of described 3rd coupling coil 1423
Connecting and ground connection, the second end of the second coupling coil 1422 of described impedance transformer couples with the 4th of described impedance transformer
Second end of coil 1424, the second balanced signal port connect；The first of 4th coupling coil 1424 of described impedance transformer
End is connected with the second input port of described impedance transformer.
It should be noted that the specific implementation of intervalve matching circuit 140 is not specifically limited by the present invention, can adopt
Realize by the mode of coupled inductor or coupled transmission line.
And for output matching circuit 160, output matching circuit 160 is output wideband balun impedance transformer, described defeated
Go out wideband balun impedance transformer and include the transformator 1620 of impedance transformer 1610 and the cascade of described impedance transformer, described difference
Divide the outfan of output stage amplifier 150 and the first balanced signal port of described impedance transformer and the second balanced signal port
Connecting, described impedance transformer comprises 4 impedance coupler coils, constitutes two two-by-two to impedance coupler coil pair, impedance the first coupling
Zygonema circle 1611 and impedance the second coupling coil 1612 constitute impedance the first coupled pair, impedance the 3rd coupling coil 1613 with
Impedance the 4th coupling coil 1614 constitutes impedance the second coupled pair；First end of described impedance the first coupling coil 1611 with
Described first balanced signal port, the first end of described impedance the 3rd coupling coil 1613 connect, described impedance the first coupling line
Circle 1,611 second ends be connected with the first input end of described transformator, the first end of described impedance the second coupling coil 1612 and
Described second balanced signal port, the first end of described impedance the 4th coupling coil 1614 connect, described impedance the second coupling line
Second end of circle 1612 is connected with the second end of described impedance the 3rd coupling coil 1613 and ground connection, described impedance the 4th coupling line
Second end of circle 1614 is connected with the second input of described transformator, transformation first coupling coil 1621 of described transformator
First end is connected with the first input end of described transformator, the first end of transformation second coupling coil 1622 of described transformator with
Second input of described transformator connects；Second end of described transformation the first coupling coil 1621 is with non-equilibrium signal port even
Connect, the second end ground connection of described transformation the second coupling coil 1622.
And the second coupling coil 1612 of impedance transformer and the 3rd coupling coil 1613 are in addition to being directly grounded, also may be used
With the function extra by connecting other device acquisition, the most described radio-frequency power amplifier also includes and described impedance second
Second end of coupling coil 1612, described impedance the 3rd coupling coil 1,613 second end connect choke induction 1630, described in grip
Stream inductance 1630 is by connection decoupling capacitor 1640 ground connection, described choke induction 1630 and the common port of described decoupling capacitor 1640
It is connected with the supply voltage VDD of described differential output stage amplifier 150.
Owing to multistage amplifier includes at least one driving stage amplifier 130 and at least one differential output stage amplifier
150, the two can be made up of any one in GaAs HBT, GaAs pHEMT, SiGe, CMOS, SOI, therefore, described multistage
Amplifier is to use one or more the multistage amplifications made in GaAs HBT, GaAs pHEMT, SiGe, CMOS, SOI
Device.
It will be appreciated by persons skilled in the art that intervalve matching circuit 140 is by inter-stage wideband balun or inter-stage broadband
Balun impedance transformer, output matching circuit 160 is output wideband balun impedance transformer, exports wideband balun impedance transformer
Being made up of impedance transformer and the transformator cascaded with described impedance transformer, these are all made up of, in order to drop coil coupling
Low cost, described intervalve matching circuit 140 and/or described output matching circuit 160 are for being arranged on base plate for packaging or IPD tube core
Coupling coil or coupled transmission line composition.
In sum, the radio-frequency power amplifier that the embodiment of the present invention provides, by amplifying the driving stage of path at radio frequency
Connect intervalve matching circuit between amplifier and differential output stage amplifier, and connect output matching at differential output stage amplifier
Circuit, can realize covering the high, medium and low frequency range of 2G/3G/4G, the most only uses a radio frequency to amplify path, so that it may it is right to realize
The all standing of the high, medium and low frequency range of 2G/3G/4G, simplifies the framework of multimode multi-frequency radio frequency front-end chip.And interstage matched is electric
Road and output matching circuit are only respectively an inter-stage wideband balun or inter-stage balun impedance transformer and an output broadband bar
Human relations impedance transformer, cost is relatively low, reduces the cost of radio-frequency power amplifier.
Above radio-frequency power amplifier provided by the present invention is described in detail.Specific case used herein
Principle and embodiment to the present invention are set forth, and the explanation of above example is only intended to help to understand the side of the present invention
Method and core concept thereof.It should be pointed out that, for those skilled in the art, without departing from the principle of the invention
Under premise, it is also possible to the present invention is carried out some improvement and modification, these improve and modify and also fall into the claims in the present invention
In protection domain.
Claims (10)
1. a radio-frequency power amplifier, it is characterised in that include that a radio frequency amplifies path, described radio frequency amplifies path and includes many
Level amplifying circuit, described multistage amplifier circuit includes that at least one driving stage amplifier and at least one differential output stage amplify
Device, the outfan of described driving stage amplifier is connected with described differential output stage amplifier by intervalve matching circuit, described difference
The outfan dividing output stage amplifier is connected with output matching circuit；
Wherein, described intervalve matching circuit includes an inter-stage wideband balun or inter-stage wideband balun impedance transformer, for real
Existing radiofrequency signal is from non-equilibrium to the conversion of balance, and described output matching circuit includes exporting wideband balun impedance transformer, uses
In difference radio-frequency signal being converted to single-ended radio frequency signal, couple with output gating circuit.
2. radio-frequency power amplifier as claimed in claim 1, it is characterised in that described inter-stage wideband balun impedance transformer bag
Include the output of transformator and the impedance transformer being connected with described transformator, non-equilibrium prevention at radio-frequency port and described driving stage amplifier
End, described transformator the first coupling coil one end connect, the other end of the first coupling coil of described transformator is with described
The first input port of impedance transformer connects, and one end ground connection of the second coupling coil of described transformator, the other end is with described
Second input port of impedance transformer connects, the first coupling coil of described impedance transformer and the second coupling coil composition the
One coupled pair, the 3rd coupling coil and the 4th coupling coil constitute the second coupled pair；The of described impedance transformer
One end of one coupling coil is connected with the first input port of described impedance transformer, the other end and described 3rd coupling coil
Second end and the first balanced signal port connect, one end of described second coupling coil and the first end of described 3rd coupling coil
Connect and ground connection, the second end of the second coupling coil of described impedance transformer and the 4th coupling coil of described impedance transformer
The second end, second balanced signal port connect；First end of the 4th coupling coil of described impedance transformer and described impedance
Second input port of changer connects.
3. radio-frequency power amplifier as claimed in claim 1, it is characterised in that described output wideband balun impedance transformer bag
Include the transformator of impedance transformer and the cascade of described impedance transformer, the outfan of described differential output stage amplifier and described resistance
First balanced signal port of resistance parallel operation and the second balanced signal port connect, and described impedance transformer comprises 4 impedance couplings
Zygonema circle, constitutes two two-by-two and with impedance the second coupling coil, impedance coupler coil pair, impedance the first coupling coil is constituted impedance
First coupled pair, impedance the 3rd coupling coil constitutes impedance the second coupled pair with impedance the 4th coupling coil；Described
First end of impedance the first coupling coil connects with the first end of described first balanced signal port, described impedance the 3rd coupling coil
Connecing, described second end of impedance the first coupling coil is connected with the first input end of described transformator, and described impedance second couples
First end of coil is connected with the first end of described second balanced signal port, described impedance the 4th coupling coil, described impedance
Second end of the second coupling coil is connected with the second end of described impedance the 3rd coupling coil and ground connection, and described impedance the 4th couples
Second end of coil is connected with the second input of described transformator, the first end of transformation first coupling coil of described transformator
It is connected with the first input end of described transformator, the first end of transformation second coupling coil of described transformator and described transformator
Second input connect；Second end of described transformation the first coupling coil is connected with non-equilibrium signal port, described transformation
Second end ground connection of two coupling coils.
4. radio-frequency power amplifier as claimed in claim 3, it is characterised in that also include and described impedance the second coupling coil
The second end, described impedance the 3rd coupling coil the second end connect choke induction, described choke induction by connect decoupling electricity
Hold the common port of ground connection, described choke induction and described decoupling capacitor and the supply voltage VDD of described differential output stage amplifier
Connect.
5. radio-frequency power amplifier as claimed in claim 1, it is characterised in that described output gating circuit is more hilted broadsword is thrown and penetrated
The combination of one or more in frequency switching circuit, low pass filter, multiplexer.
6. radio-frequency power amplifier as claimed in claim 1, it is characterised in that also include amplifying the defeated of path with described radio frequency
Entering the input gating circuit that end connects and the controller being connected with described input gating circuit, described controller is used for control by defeated
Enter a kind of selected input institute in high-frequency input signal, IF input signals and the low-frequency input signal of described input gating circuit
State radio frequency and amplify path.
7. radio-frequency power amplifier as claimed in claim 1, it is characterised in that also include and the outfan of input gating circuit
And the input wideband balun that the input of described driving stage amplifier connects.
8. radio-frequency power amplifier as claimed in claim 1, it is characterised in that the non-equilibrium radio frequency of described inter-stage wideband balun
The outfan of port and described driving stage amplifier, one end of the first coupling coil of transformator are connected, described first coupling line
The other end of circle and the first balanced signal port connect, one end ground connection of the second coupling coil, other end and the second balance letter
Number port connects.
9. radio-frequency power amplifier as claimed in claim 1, it is characterised in that described multistage amplifier is for using GaAs
One or more multistage amplifiers made in HBT, GaAs pHEMT, SiGe, CMOS, SOI.
10. radio-frequency power amplifier as claimed in claim 1, it is characterised in that described intervalve matching circuit and/or described defeated
Going out match circuit is to be arranged on the coupling coil on base plate for packaging or IPD tube core or coupled transmission line composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610656470.2A CN106253864A (en) | 2016-08-11 | 2016-08-11 | A kind of radio-frequency power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656470.2A CN106253864A (en) | 2016-08-11 | 2016-08-11 | A kind of radio-frequency power amplifier |
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| CN106253864A true CN106253864A (en) | 2016-12-21 |
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| CN201610656470.2A Pending CN106253864A (en) | 2016-08-11 | 2016-08-11 | A kind of radio-frequency power amplifier |
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| CN106788274A (en) * | 2017-01-18 | 2017-05-31 | 广东宽普科技股份有限公司 | A kind of road complex RF microwave power amplifier of broadband three |
| CN106911314A (en) * | 2017-03-01 | 2017-06-30 | 中国电子科技集团公司第三十八研究所 | A kind of microwave broadband power amplifier |
| CN107124146A (en) * | 2017-05-03 | 2017-09-01 | 宜确半导体（苏州）有限公司 | A kind of radio-frequency power amplifier |
| CN109150227A (en) * | 2018-08-06 | 2019-01-04 | 安徽矽磊电子科技有限公司 | A kind of multimode radio-frequency front end circuit and its control method |
| CN109408974A (en) * | 2018-10-30 | 2019-03-01 | 中国电子科技集团公司第十三研究所 | Power device preparation method |
| CN109660211A (en) * | 2018-11-19 | 2019-04-19 | 汪洋 | The 5G CMOS radio-frequency power amplifier of power combing and Envelope injection |
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| CN106788274A (en) * | 2017-01-18 | 2017-05-31 | 广东宽普科技股份有限公司 | A kind of road complex RF microwave power amplifier of broadband three |
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| CN109408974A (en) * | 2018-10-30 | 2019-03-01 | 中国电子科技集团公司第十三研究所 | Power device preparation method |
| CN109660211B (en) * | 2018-11-19 | 2023-06-30 | 汪洋 | 5G CMOS radio frequency power amplifier of power synthesis sum Envelope injection |
| CN109660211A (en) * | 2018-11-19 | 2019-04-19 | 汪洋 | The 5G CMOS radio-frequency power amplifier of power combing and Envelope injection |
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| CN114826294A (en) * | 2022-04-22 | 2022-07-29 | 扬州海科电子科技有限公司 | Modular large dynamic high-speed channel conversion device and method |
| CN114826294B (en) * | 2022-04-22 | 2023-11-28 | 扬州海科电子科技有限公司 | Modularized large dynamic high-speed channel conversion device and method |
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Application publication date: 20161221 |