CN108988793A - A kind of RF signal power amplifying circuit - Google Patents
A kind of RF signal power amplifying circuit Download PDFInfo
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- CN108988793A CN108988793A CN201810987870.0A CN201810987870A CN108988793A CN 108988793 A CN108988793 A CN 108988793A CN 201810987870 A CN201810987870 A CN 201810987870A CN 108988793 A CN108988793 A CN 108988793A
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- transmission line
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- radio frequency
- line transformer
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- 230000005540 biological transmission Effects 0.000 claims abstract description 72
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 230000033228 biological regulation Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 27
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 27
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
-
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- 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
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/26—Push-pull amplifiers; Phase-splitters therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
The present invention provides a kind of RF signal power amplifying circuits, it is characterized by comprising sequentially connected transmission line balun one, balance transmission line transformer one, two-way intermediate conversion module, balance transmission line transformer two, capacitance module and transmission line baluns two, and the LC filtering power feeding module connecting with balance transmission line transformer two；Wherein, transmission line balun one is connect with rf inputs, and transmission line balun two is connect with RF output end；In two-way intermediate conversion module, every road intermediate conversion module includes RC series unit, the radio frequency unit connecting with RC series unit, lc unit and the pressure regulation unit for being connected to RC series unit Yu radio frequency unit junction.The power amplification circuit can realize the high-power amplification of radiofrequency signal high magnification numbe, and reliability is high, can offset improvement second harmonic.
Description
Technical field
The present invention relates to radio frequency amplifying technique fields, more specifically to a kind of RF signal power amplifying circuit.
Background technique
With the development of science and technology the communication technology flourishes, realize that the stabilization in various environment, the transmission of the data of high speed are
One of the main goal in research of present communication system.Radiofrequency signal needs by power amplification, it is made to meet transmission power requirement
Afterwards, then by antenna space is radiated it into.Due to radio frequency signal frequency height, general amplifying circuit can not be applicable in,
Power amplification circuit needs to be designed for radiofrequency signal.But there are following for existing RF signal power amplifying circuit at present
It is insufficient:
(1) amplification factor of power amplification circuit is low, is not able to satisfy transmission power requirement；(2) power amplification circuit is logical
Signal amplification is realized frequently with single radio frequency power tube, and amplifying power is restricted, and influences the stabilization of power amplification circuit work
Property and reliability；(3) second harmonic is generated in radiofrequency signal amplification process, increases the risk of distorted signals, and need rear
It is continuous that complicated filter circuit is added to eliminate second harmonic；(4) in badly load standing wave, power amplification circuit work
Stability is poor.
Summary of the invention
It is an object of the invention to overcome shortcoming and deficiency in the prior art, a kind of achievable radiofrequency signal high power is provided
The high-power amplification of number, reliability is high, can offset the RF signal power amplifying circuit for improving second harmonic.
In order to achieve the above object, the technical scheme is that: a kind of amplification of RF signal power
Circuit, it is characterised in that: including sequentially connected transmission line balun one, balance transmission line transformer one, two-way intermediate conversion mould
Block, balance transmission line transformer two, capacitance module and transmission line balun two and power module and with balance transmission line transformer
The LC of two connections filters power feeding module；Wherein, transmission line balun one is connect with rf inputs, and transmission line balun two and radio frequency are defeated
Outlet connection；
In two-way intermediate conversion module, every road intermediate conversion module includes RC series unit, connect with RC series unit
Radio frequency unit, lc unit and the pressure regulation unit for being connected to RC series unit Yu radio frequency unit junction；Every road intermediate conversion mould
The input terminal of block is connect by RC series unit with balance transmission line transformer one；The output end of every road intermediate conversion module passes through
Radio frequency unit is connect with balance transmission line transformer two；Lc unit is connected to radio frequency unit and connect with balance transmission line transformer two
Place.
Preferably, the radio frequency unit includes radio frequency power tube；The input terminal of radio frequency power tube is connect with RC series unit；
The output end of radio frequency power tube is connect with balance transmission line transformer two；Pass through between the input terminal and output end of radio frequency power tube
Connection is realized in capacitor and resistance series connection；In two-way intermediate conversion module, electricity is connected between the output end of two radio frequency power tubes
Sense.
Preferably, the pressure regulation unit is connected by adjustable voltage division circuit, NPN triode, PNP triode and peripheral circuit
Composition.
Preferably, the pressure regulation unit is connected by adjustable voltage division circuit, NPN triode, PNP triode and peripheral circuit
Composition refers to: adjustable voltage division circuit is composed in series by two resistance groups；One end of adjustable voltage division circuit is connected with bias voltage, separately
One end ground connection；Any one resistance group has adjustable resistance；It is connect at the base stage of NPN triode and two resistance group series connection, NPN tri-
The collector of pole pipe is connect with power module, and the emitter of NPN triode and the base stage of PNP triode connect；PNP triode
The connection of the base stage of collector and PNP triode；The emitter of PNP triode and the base stage of PNP triode connect；PNP triode
Emitter be also connected to RC series unit and radio frequency unit junction.
Preferably, the balance transmission line transformer one is made of two connections of balun one, and two baluns one pass through input
End series connection, the mode of output end alter-parallel constitute balance transmission line transformer one；Two baluns one also pass through input terminal respectively
It connect with transmission line balun one, and is connect respectively by output end with RC series unit.
Preferably, the balance transmission line transformer two is made of two connections of balun two, and two baluns two pass through input
Alter-parallel is held, the concatenated mode of output end constitutes balance transmission line transformer two；Two baluns two also pass through input terminal respectively
It connect with radio frequency unit, and is connect respectively by output end with capacitance module；The LC filtering power feeding module is connected to two bars
At two output end series connection of human relations.
Preferably, the balance transmission line transformer is first is that conversion ratio is the balance transmission line transformer one of 4:1.
Preferably, the balance transmission line transformer is second is that conversion ratio is the balance transmission line transformer two of 1:4.
Power amplification circuit of the present invention can carry out radiofrequency signal in 30~88M band limits that high magnification numbe is high-power puts
Greatly, such as from 1W high efficiency it is amplified to 100W；Amplification is realized using two radio frequency power tubes, and there is high unfailing performance.
Input and output simultaneously are wide by the 4:l balance transmission line transformer one and 1:4 balance transmission line transformer two of balun tape splicing magnetic core
Band matching, cooperation LC filter power feeding module, reach power amplification circuit single-stage power amplifier in 30~88M full range segment limit
60% or more efficiency.The 180 degree of simultaneous transmission line balun one and transmission line balun two recommends amplification, and counteracting improves secondary humorous
Wave 10dB or more reduces the pressure that subsequent filter filters out harmonic wave.Additionally by radio frequency power tube add resistive degeneration and
The measure of series resistance is inputted ensure that under inband flatness and various severe load standing waves in 30~88M band limits
Stability.
Compared with prior art, the invention has the advantages that with the utility model has the advantages that
1, power amplification circuit of the present invention can carry out radiofrequency signal in 30~88M band limits that high magnification numbe is high-power puts
Greatly, there is high unfailing performance；Power amplification efficiency is high；
2, power amplification circuit of the present invention can offset improvement second harmonic, reduce the pressure that subsequent filter filters out harmonic wave
Power；
3, power amplification circuit of the present invention can guarantee the inband flatness in 30~88M band limits, even if badly bearing
It is also with good stability in the case of load standing wave.
Detailed description of the invention
Fig. 1 is the block diagram of power amplification circuit of the present invention；
Fig. 2 is the circuit diagram of power amplification circuit of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
Embodiment
A kind of RF signal power amplifying circuit of the present embodiment, structure is as depicted in figs. 1 and 2, including sequentially connected
One WT101 of transmission line balun, balance transmission line transformer one, two-way intermediate conversion module, balance transmission line transformer two, capacitor
Two WT106 of module and transmission line balun, and the LC filtering power feeding module being connect with balance transmission line transformer two；Wherein, it passes
Defeated one WT101 of line balun is connect with rf inputs, and two WT106 of transmission line balun is connect with RF output end.
In two-way intermediate conversion module, every road intermediate conversion module includes RC series unit, connect with RC series unit
Radio frequency unit, lc unit and the pressure regulation unit for being connected to RC series unit Yu radio frequency unit junction；Every road intermediate conversion mould
The input terminal of block is connect by RC series unit with balance transmission line transformer one；The output end of every road intermediate conversion module passes through
Radio frequency unit is connect with balance transmission line transformer two；Lc unit is connected to radio frequency unit and connect with balance transmission line transformer two
Place.
Specific circuit is: balance transmission line transformer is first is that conversion ratio is the balance transmission line transformer one of 4:1.Balance
Line transformer one is made of two balun one WT102, WT103 connections, and two baluns one WT102, WT103 pass through input terminal
Series connection, the mode of output end alter-parallel constitute balance transmission line transformer one；Two baluns one WT102, WT103 also lead to respectively
It crosses input terminal to connect with transmission line balun one, and is connect respectively by output end with RC series unit.
RC series unit includes capacitor C101, C101 ' and by resistance R102, R103 and R104, R102 ', R103 ' and
R104 ' composes in parallel parallel resistance group.
Radio frequency unit includes radio frequency power tube VQ101, VQ101 '；The input terminal of radio frequency power tube VQ101, VQ101 ' with simultaneously
Join the connection of resistance group；The output end of radio frequency power tube VQ101, VQ101 ' are connect with balance transmission line transformer two；Radio-frequency power
Pass through capacitor C102, C102 ' and parallel resistance R105 and R106 between the input terminal and output end of pipe VQ101, VQ101 ',
Connection is realized in R105 ' and R106 ' series connection；Inductance is connected between the output end of two radio frequency power tubes VQ101 and VQ101 '
L102.Lc unit includes concatenated capacitor CP101, CP101 ' and inductance L101, L101 '.
Pressure regulation unit by adjustable voltage division circuit, NPN triode VQ102, VQ102 ', PNP triode VQ103, VQ103 ' with
And peripheral circuit connection composition.Adjustable voltage division circuit is composed in series by two resistance groups；One end of adjustable voltage division circuit is connected with
Bias voltage VG, other end ground connection.One resistance group includes resistance RP101 and RP102, RP101 ' and RP102 '；Another electricity
Resistance group includes resistance R107, R108, R109 and adjustable resistance R110, resistance R107 ', R108 ', R109 ' and adjustable resistance
R110’。
It is connect at the base stage of NPN triode VQ102, VQ102 ' and two resistance group series connection, NPN triode VQ102,
VCC voltage connection in the collector and power module of VQ102 ', the emitter and PNP tri- of NPN triode VQ102, VQ102 '
The base stage of pole pipe VQ103, VQ103 ' connect；The collector of PNP triode VQ103, VQ103 ' by resistance R111, R111 ' with
The base stage of PNP triode VQ103, VQ103 ' connect；The emitter of PNP triode VQ103, VQ103 ' pass through diode VD101,
The base stage of VD101 ' and PNP triode VQ103, VQ103 ' connect；The emitter of PNP triode VQ103, VQ103 ' also pass through electricity
R114 is hindered, R114 ' is connected to RC series unit and radio frequency power tube VQ101, the junction VQ101 '.
Balance transmission line transformer is second is that conversion ratio is the balance transmission line transformer two of 1:4.Balance transmission line transformer
Two are made of two balun two WT104, WT105 connections, and two baluns two WT104, WT105 are defeated by input terminal alter-parallel
The concatenated mode of outlet constitutes balance transmission line transformer two；Two baluns two WT104, WT105 also respectively by input terminal with
Radio frequency power tube VQ101, VQ101 ' connection, and connect respectively by output end with capacitance module.
It includes the shunt capacitance group composed in parallel by capacitor C109, capacitor C110 and capacitor C111 that LC, which filters power feeding module,
One, the shunt capacitance group two that is composed in parallel by capacitor C112 and capacitor C113, capacitor C114, diode VD102, inductance L103 and
Inductance L104；Diode VD102 is in parallel with shunt capacitance group one；Diode VD102 is connect with the VCC voltage in power module.
Shunt capacitance group one, inductance L103, shunt capacitance group two, inductance L104 and capacitor C114 are sequentially connected；Capacitor C114 is connected to
At two two WT104, WT105 output end series connection of balun.List can also be respectively adopted in shunt capacitance group one and shunt capacitance group two
A capacitor substitution.
Power amplification circuit of the present invention can carry out radiofrequency signal in 30~88M band limits that high magnification numbe is high-power puts
Greatly, such as from 1W high efficiency it is amplified to 100W；Amplification is realized using two radio frequency power tubes, and there is high unfailing performance.
Input and output simultaneously are wide by the 4:l balance transmission line transformer one and 1:4 balance transmission line transformer two of balun tape splicing magnetic core
Band matching, cooperation LC filter power feeding module, reach power amplification circuit single-stage power amplifier in 30~88M full range segment limit
60% or more efficiency.The 180 degree of simultaneous transmission line balun one and transmission line balun two recommends amplification, and counteracting improves secondary humorous
Wave 10dB or more reduces the pressure that subsequent filter filters out harmonic wave.Additionally by radio frequency power tube add resistive degeneration and
The measure of series resistance is inputted ensure that under inband flatness and various severe load standing waves in 30~88M band limits
Stability.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (8)
1. a kind of RF signal power amplifying circuit, it is characterised in that: including sequentially connected transmission line balun one, balance transmission
Line transformer one, two-way intermediate conversion module, balance transmission line transformer two, capacitance module and transmission line balun two, Yi Ji electricity
Source module and the LC connecting with balance transmission line transformer two filter power feeding module；Wherein, transmission line balun one and radio frequency input
End connection, transmission line balun two are connect with RF output end；
In two-way intermediate conversion module, every road intermediate conversion module includes RC series unit, penetrates with what RC series unit was connect
Frequency unit, lc unit and the pressure regulation unit for being connected to RC series unit Yu radio frequency unit junction；Every road intermediate conversion module
Input terminal is connect by RC series unit with balance transmission line transformer one；The output end of every road intermediate conversion module passes through radio frequency
Unit is connect with balance transmission line transformer two；Lc unit is connected to radio frequency unit and two junction of balance transmission line transformer.
2. RF signal power amplifying circuit according to claim 1, it is characterised in that: the radio frequency unit includes radio frequency
Power tube；The input terminal of radio frequency power tube is connect with RC series unit；The output end and balanced transmission line transformation of radio frequency power tube
Device two connects；It is connected between the input terminal of radio frequency power tube and output end by capacitor and resistance and realizes connection；Turn among two-way
It changes the mold in block, is connected with inductance between the output end of two radio frequency power tubes.
3. RF signal power amplifying circuit according to claim 1, it is characterised in that: the pressure regulation unit is by adjustable point
Volt circuit, NPN triode, PNP triode and peripheral circuit connection composition.
4. RF signal power amplifying circuit according to claim 3, it is characterised in that: the pressure regulation unit is by adjustable point
Volt circuit, NPN triode, PNP triode and peripheral circuit connection composition refer to: adjustable voltage division circuit is by two resistance group strings
Connection composition；One end of adjustable voltage division circuit is connected with bias voltage, other end ground connection；Any one resistance group has adjustable resistance；
It is connect at the base stage of NPN triode and two resistance group series connection, the collector of NPN triode is connect with power module, tri- pole NPN
The emitter of pipe and the base stage of PNP triode connect；The collector of PNP triode and the base stage of PNP triode connect；PNP tri-
The emitter of pole pipe and the base stage of PNP triode connect；The emitter of PNP triode is also connected to RC series unit and radio frequency list
First junction.
5. RF signal power amplifying circuit according to any one of claim 1 to 4, it is characterised in that: the balance
Line transformer one is made of two connections of balun one, and two baluns one are connected by input terminal, output end alter-parallel
Mode constitutes balance transmission line transformer one；Two baluns one are also connect by input terminal with transmission line balun one respectively, and point
Not Tong Guo output end connect with RC series unit.
6. RF signal power amplifying circuit according to any one of claim 1 to 4, it is characterised in that: the balance
Line transformer two is made of two connections of balun two, and for two baluns two by input terminal alter-parallel, output end is concatenated
Mode constitutes balance transmission line transformer two；Two baluns two are also connect by input terminal with radio frequency unit respectively, and are led to respectively
Output end is crossed to connect with capacitance module；The LC filtering power feeding module is connected at two baluns, two output end series connection.
7. RF signal power amplifying circuit according to any one of claim 1 to 4, it is characterised in that: the balance
Line transformer is first is that conversion ratio is the balance transmission line transformer one of 4:1.
8. RF signal power amplifying circuit according to any one of claim 1 to 4, it is characterised in that: the balance
Line transformer is second is that conversion ratio is the balance transmission line transformer two of 1:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987870.0A CN108988793A (en) | 2018-08-28 | 2018-08-28 | A kind of RF signal power amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987870.0A CN108988793A (en) | 2018-08-28 | 2018-08-28 | A kind of RF signal power amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108988793A true CN108988793A (en) | 2018-12-11 |
Family
ID=64546628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810987870.0A Withdrawn CN108988793A (en) | 2018-08-28 | 2018-08-28 | A kind of RF signal power amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108988793A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682859A (en) * | 2020-07-09 | 2020-09-18 | 西安电子科技大学 | Power amplifier of low-power consumption AB class CMOS |
| CN111726086A (en) * | 2019-03-22 | 2020-09-29 | 株式会社村田制作所 | Power amplifying circuit |
| WO2021253597A1 (en) * | 2020-06-16 | 2021-12-23 | 锐石创芯（深圳）科技有限公司 | Power amplifier output matching circuit, radio frequency front-end module, and wireless device |
-
2018
- 2018-08-28 CN CN201810987870.0A patent/CN108988793A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111726086A (en) * | 2019-03-22 | 2020-09-29 | 株式会社村田制作所 | Power amplifying circuit |
| CN111726086B (en) * | 2019-03-22 | 2023-11-14 | 株式会社村田制作所 | Power amplifying circuit |
| WO2021253597A1 (en) * | 2020-06-16 | 2021-12-23 | 锐石创芯（深圳）科技有限公司 | Power amplifier output matching circuit, radio frequency front-end module, and wireless device |
| CN111682859A (en) * | 2020-07-09 | 2020-09-18 | 西安电子科技大学 | Power amplifier of low-power consumption AB class CMOS |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181211 |
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