CN105897181B - A kind of high speed digital signals transmitter power amplifying device - Google Patents
A kind of high speed digital signals transmitter power amplifying device Download PDFInfo
- Publication number
- CN105897181B CN105897181B CN201610351571.9A CN201610351571A CN105897181B CN 105897181 B CN105897181 B CN 105897181B CN 201610351571 A CN201610351571 A CN 201610351571A CN 105897181 B CN105897181 B CN 105897181B
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- China
- Prior art keywords
- output end
- high speed
- power
- voltage
- amplifier
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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
- H03F1/0288—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers
-
- 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
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- 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
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
Abstract
The invention discloses a kind of high speed digital signals transmitter power amplifying devices, include the power amplifier of high speed serial parallel exchange device, high speed parallel-to-serial converter and M setting parallel with one another, the input terminal of each power amplifier is connect with high speed serial parallel exchange device, its output end is connect with high speed parallel-to-serial converter, it is connected with to provide the voltage-operated device of the operating voltage of power amplifier on each power amplifier, the input terminal of the voltage-operated device is connect with the output serial ports of corresponding high speed serial parallel exchange device, the numerical value for the positive integer times that wherein M is 4.High speed digital signals transmitter power amplifying device of the present invention it is efficient, linear characteristic is excellent, and the supply voltage of power amplifier can be synchronized with the amplitude of input signal to be changed, while ensure that signal amplification, the power consumption for reducing power amplifier reduces the calorific value of power amplifier.
Description
Technical field
The present invention relates to a kind of power amplifier devices, and in particular to a kind of high speed digital signals transmitter power amplification dress
It sets.
Background technology
With the continuous development of science and technology, communication realizes the unprecedented growth of data throughout.The communications industry at this stage
Requirement to the transmission power of transmitter is also higher and higher, and present communications rate is higher and higher, this amplifies transmitter power
More stringent requirements are proposed for the response speed and efficiency of device；Meanwhile non-linear to be that transmitter power amplifying device faces another
One problem.It, can if transmitter power amplifying device cannot linearly amplify the signal when input terminal loads high-power signal
The case where gain saturatiuon and distortion can occur；In addition, in the signal of transmitter transmitting, the level of part signal is maintained at relatively low
Value, only part signal level reaches peak power, and therefore, power amplifier can only provide most efficient when reaching peak power
Rate, in the most of the time, power amplifier can not all efficiently use the power of input, and useless power can be changed into thermal energy, cause
The waste of electric energy.
The linearity and efficiency of power amplifier are the emphasis of design power amplifier.Currently, being by Doherty technologies
To solve the efficiency of transmitter power amplifying device.The general structure of Doherty is made of 2 power amplifiers：One main power amplifier,
One auxiliary power amplifier is connected with 90 ° of quarter wavelength impedance transducers, in the input of auxiliary power amplifier in the output end of main power amplifier
End is connected with 90 ° of quarter wavelength impedance transducers.Main power amplifier is operated in B classes or AB classes, and auxiliary power amplifier is operated in C classes.
Two power amplifiers do not take turns to operate, but main power amplifier works always, and the peak value of auxiliary power amplifier to setting just works (this power amplifier
It is called peak ampli-fier).Although transmitter power amplifying device can be allowed larger using Doherty power amplifier
Dynamic range in keep greater efficiency, but its linearity is poor, when transmit high data rate, response speed very slowly, nothing
Method meets the requirement of high data rate.
Invention content
In view of the above-mentioned deficiencies, technical problem to be solved by the invention is to provide a kind of high speed digital signals transmitters
Power amplifier device, the power amplifier device have good time response ability and delivery efficiency to high rate data signals.
To solve the above problems, the invention is realized by the following technical scheme：
A kind of high speed digital signals transmitter power amplifying device, including high speed serial parallel exchange device, high speed parallel-serial conversion
The power amplifier of device and M settings parallel with one another, the input terminal of each power amplifier connect with high speed serial parallel exchange device, it
Output end is connect with high speed parallel-to-serial converter, is connected with to provide the operating voltage of power amplifier on each power amplifier
Voltage-operated device, the input terminal of the voltage-operated device connect with the output end of corresponding high speed serial parallel exchange device,
The numerical value for the positive integer times that wherein M is 4.
In said program, the voltage-operated device includes demodulator, D/A converter and voltage amplifier, the demodulation
The output end of device and the input terminal of D/A converter connect, and the output end of D/A converter and the input terminal of voltage amplifier connect,
The main power source input terminal D connections of the output end and power amplifier of voltage amplifier.
In said program, further, the voltage-operated device further includes voltage detection module, processing chip and control
The output end of switch, the input terminal of the voltage detection module and voltage amplifier connects, the input terminal of the processing chip with
The output end connection of voltage detection module, the output end of processing chip and control switch connection, the output end of the control switch
It is connect with a stand-by power supply input terminal S, stand-by power supply input terminal S is connect with power amplifier.
In said program, each power amplifier includes the peak value of three power splitters, carrier amplifier and 2 settings parallel with one another
Amplifier, the input terminal of the carrier amplifier connect with the output end of three power splitters, the connection of its output end there are one four/
The one wavelength impedance transformers and quarter wavelength impedance transducer is connect with signal output end, each peak amplifier it is defeated
Enter end connect with the output end of three power splitters, its output end by after a quarter wavelength impedance transducer with signal output
End connection.
In said program, M is can be with any number in 4,8 or 16.
The operation principle of the present invention is that：
1）High-speed serial digital signal is converted into multi-path low speed Parallel Digital letter by the present invention by high speed serial parallel exchange device
Number, multi-path low speed parallel digital signal inputs corresponding power amplifier and carries out power amplification, amplified signal input respectively
Signal is reverted to serial signal by high speed parallel-to-serial converter；
2）Carrying out 1）In serioparallel exchange after, the present invention passes through voltage-operated device power supply to power amplifier simultaneously
Voltage is controlled, i.e., demodulates the parallel digital signal received by demodulator, demodulate raw digital signal, is led to
Cross D/A converter and raw digital signal be transformed into analog voltage signal, then by voltage amplifier by analog voltage signal into
It is the power amplifier power supply, power amplifier work after row power amplification.Due to the supply voltage waveform of power amplifier
It is identical as the waveform of " envelope " of parallel digital signal, therefore the supply voltage of the power amplifier will be according to the parallel signal
（That is input signal）Amplitude synchronize variation, when signal reaches power peak, the supply voltage of the power amplifier also reaches
To peak value, when the power of signal is relatively low, the supply voltage of the power amplifier also keeps relatively low.It can ensure that signal in this way
Power normally amplify, while also reducing the supply voltage of the power amplifier, save electric energy, also reduce power and put
The calorific value of big device, ensure that power amplifier will not be damaged due to overheat.
Beneficial effects of the present invention are：
1, the power amplifier that the present invention uses is new structural three roads Doherty circuit, with three road Doherty of tradition
Circuit is compared, it can obtain efficient amplification factor within the scope of bigger rollback.
2, two-forty signal is become multi-path low speed rate signal by this high speed digital signals transmitter power amplifying device, and
Amplifier is far above the amplification to two-forty signal to the linear degree and time response velocity fails of the amplification of low-rate signal
Linear degree and time response velocity fails, by high speed signal is reduced to power amplification is carried out after low speed signal after restore
Mode, improves the efficiency and time response velocity fails of amplifier, and makes amplifier in the larger context and can also keep good
Good linear characteristic.
3, this high speed digital signals transmitter power amplifying device demodulates the digital signal that transmitter is sent, and obtains
Voltage amplification is carried out after to raw digital signal, is powered for the power amplifier, is realized the supply voltage of power amplifier
The amplitude of input signal can be followed to synchronize variation, while ensure that signal amplification, the power consumption of power amplifier is reduced, save
Power saving energy also reduces the calorific value of power amplifier, ensures that power amplifier will not be stopped because of overheat.
Description of the drawings
Fig. 1 is the composed structure block diagram of this high speed digital signals transmitter power amplifying device.
Fig. 2 is that the composition of each voltage-operated device connects block diagram.
Fig. 3 is the structure diagram of each power amplifier.
Specific implementation mode
Explanation is further explained to the present invention with reference to specific embodiments and the drawings, but not limiting this hair
It is bright.
As shown in Figure 1, a kind of high speed digital signals transmitter power amplifying device, including high speed serial parallel exchange device, height
The input terminal of the power amplifier of fast parallel-to-serial converter and M settings parallel with one another, each power amplifier is gone here and there and is turned with high speed
Parallel operation connection, its output end are connect with high speed parallel-to-serial converter, are connected with to provide power amplification on each power amplifier
The voltage-operated device of the operating voltage of device, the input terminal of the voltage-operated device and corresponding high speed serial parallel exchange device
Export serial ports connection, the numerical value for the positive integer times that wherein M is 4.M is any number in 4,8 or 16, in the present embodiment, M 8,
The parallel signal of the i.e. described high speed serial parallel exchange device output is 8 tunnels.
As shown in Fig. 2, the voltage-operated device includes demodulator, D/A converter and voltage amplifier, the demodulator
Output end and the input terminal of D/A converter connect, the input terminal of the output end of D/A converter and voltage amplifier connects, electricity
Press the main power source input terminal D connections of the output end and power amplifier of amplifier.It can be made often by the voltage-operated device
The supply voltage of a power amplifier synchronizes variation with the variation of the parallel signal of input, i.e. high RST or when low signal, is
Power amplifier power supply, then power amplifier works；And when no signal, power amplifier does not work.
To prevent the signal due to input too weak, i.e., it can not reach opening for power amplifier after voltage amplifier amplifies
The case where moving voltage, zero-signal caused to export.In the present embodiment, the voltage-operated device further includes voltage detection module, place
It manages chip and control switchs, the input terminal of the voltage detection module and the output end of voltage amplifier connect, the processing core
The input terminal of piece and the output end connection of voltage detection module, output end and control switch connection, the control of processing chip
The output end of switch is connect with a stand-by power supply input terminal S, and stand-by power supply input terminal S is connect with power amplifier.Pass through electricity
It presses the analog voltage signal of detection module collection voltages amplifier out and is sent to processing chip, the processing chip will
The voltage signal is compared with the operating voltage value of setting：When operating voltage value of the voltage signal less than setting, to control
Switch sends out the instruction for starting stand-by power supply input terminal S, and power amplifier can also work normally at this time；And when the voltage signal is high
When the operating voltage value of setting, the instruction for closing stand-by power supply input terminal S is sent out to control switch, is inputted at this time by main power source
Hold D power supplies.
As shown in figure 3, each power amplifier includes the peak value of three power splitters, carrier amplifier and 2 settings parallel with one another
Amplifier, the input terminal of the carrier amplifier connect with the output end of three power splitters, the connection of its output end there are one four/
The one wavelength impedance transformers and quarter wavelength impedance transducer is connect with signal output end, each peak amplifier it is defeated
Enter end connect with the output end of three power splitters, its output end by after a quarter wavelength impedance transducer with signal output
End connection.
It these are only and illustrate embodiments of the present invention, be not intended to restrict the invention, for those skilled in the art
For, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this hair
Within bright protection domain.
Claims (3)
1. a kind of high speed digital signals transmitter power amplifying device, it is characterised in that：Including high speed serial parallel exchange device, high speed
The power amplifier of parallel-to-serial converter and M settings parallel with one another, the input terminal and high speed serial parallel exchange of each power amplifier
Device connection, its output end are connect with high speed parallel-to-serial converter, are connected with to provide power amplifier on each power amplifier
Operating voltage voltage-operated device, the input terminal of the voltage-operated device is defeated with corresponding high speed serial parallel exchange device
Outlet connect, voltage-operated device include demodulator, D/A converter, voltage amplifier, voltage detection module, processing chip and
Control switch, the output end of demodulator and the input terminal of D/A converter connect, the output end and voltage amplifier of D/A converter
Input terminal connection, the main power source input terminal D connections of the output end and power amplifier of voltage amplifier, voltage detection module
The output end of input terminal and voltage amplifier connects, the input terminal of processing chip and the output end connection of voltage detection module, place
The output end of chip is managed with control switch connection, the output end for controlling switch is connect with a stand-by power supply input terminal S, the standby electricity
Source input terminal S is connect with power amplifier, the numerical value for the positive integer times that wherein M is 4.
2. high speed digital signals transmitter power amplifying device according to claim 1, it is characterised in that：Each power is put
Big device includes the peak amplifier of three power splitters, carrier amplifier and 2 settings parallel with one another, the input of the carrier amplifier
End is connect with the output end of three power splitters, there are one quarter wavelength impedance transducer and a quarters for the connection of its output end
Wavelength impedance transformers are connect with signal output end, the input terminal of each peak amplifier connect with the output end of three power splitters,
Its output end after a quarter wavelength impedance transducer with signal output end by connecting.
3. high speed digital signals transmitter power amplifying device according to claim 1, it is characterised in that：M be 4,8 or
Any number in 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351571.9A CN105897181B (en) | 2016-05-24 | 2016-05-24 | A kind of high speed digital signals transmitter power amplifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351571.9A CN105897181B (en) | 2016-05-24 | 2016-05-24 | A kind of high speed digital signals transmitter power amplifying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105897181A CN105897181A (en) | 2016-08-24 |
| CN105897181B true CN105897181B (en) | 2018-11-09 |
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| CN201610351571.9A Expired - Fee Related CN105897181B (en) | 2016-05-24 | 2016-05-24 | A kind of high speed digital signals transmitter power amplifying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109698675A (en) * | 2018-12-27 | 2019-04-30 | 电子科技大学 | A kind of circuit structure of customized power transistor C-V characteristic |
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| CN1741373A (en) * | 2004-08-26 | 2006-03-01 | 日本电气株式会社 | The circuit that is used for parallel operation of doherty amplifiers |
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| CN102427332A (en) * | 2011-11-28 | 2012-04-25 | 华为技术有限公司 | Doherty power amplifier and method and equipment for improving power amplification efficiency of Doherty power amplifier |
| CN103178786A (en) * | 2011-12-26 | 2013-06-26 | 瑞典爱立信有限公司 | Multiway Doherty amplifier |
| CN103370874A (en) * | 2010-12-14 | 2013-10-23 | 天工方案公司 | Apparatus and methods for capacitive load reduction |
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| CN103597760A (en) * | 2011-06-23 | 2014-02-19 | 高通股份有限公司 | Power supply generator with noise cancellation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101094050B1 (en) * | 2009-07-23 | 2011-12-19 | 성균관대학교산학협력단 | Dynamic bias supply device having multiple switches |
| KR101124425B1 (en) * | 2010-01-20 | 2012-03-22 | 포항공과대학교 산학협력단 | Distributed Doherty Power Amplifier |
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2016
- 2016-05-24 CN CN201610351571.9A patent/CN105897181B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1741373A (en) * | 2004-08-26 | 2006-03-01 | 日本电气株式会社 | The circuit that is used for parallel operation of doherty amplifiers |
| CN101207366A (en) * | 2007-12-17 | 2008-06-25 | 华为技术有限公司 | High efficiency power amplifier |
| CN101577528A (en) * | 2008-05-09 | 2009-11-11 | 克里公司 | Progressive power generating amplifiers |
| CN102187570A (en) * | 2008-08-19 | 2011-09-14 | 克里公司 | Integrated circuit with parallel sets of transistor amplifiers having different turn on power levels |
| CN102148563A (en) * | 2010-02-10 | 2011-08-10 | 华为技术有限公司 | Tracking power supply, power control method and communication equipment |
| CN103370874A (en) * | 2010-12-14 | 2013-10-23 | 天工方案公司 | Apparatus and methods for capacitive load reduction |
| CN103597760A (en) * | 2011-06-23 | 2014-02-19 | 高通股份有限公司 | Power supply generator with noise cancellation |
| CN102427332A (en) * | 2011-11-28 | 2012-04-25 | 华为技术有限公司 | Doherty power amplifier and method and equipment for improving power amplification efficiency of Doherty power amplifier |
| CN103178786A (en) * | 2011-12-26 | 2013-06-26 | 瑞典爱立信有限公司 | Multiway Doherty amplifier |
| CN103580623A (en) * | 2012-08-10 | 2014-02-12 | 中兴通讯股份有限公司 | Radiofrequency power amplifier device and radiofrequency power amplifying method |
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| CN105897181A (en) | 2016-08-24 |
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