CN105229922B - RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments - Google Patents
RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments Download PDFInfo
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- CN105229922B CN105229922B CN201380076710.6A CN201380076710A CN105229922B CN 105229922 B CN105229922 B CN 105229922B CN 201380076710 A CN201380076710 A CN 201380076710A CN 105229922 B CN105229922 B CN 105229922B
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- 238000001514 detection method Methods 0.000 claims description 41
- 238000007689 inspection Methods 0.000 claims description 16
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Classifications
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—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
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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
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Abstract
The embodiment of the present invention provides a kind of RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments.RF power amplification processing method of the present invention, including：Detect the watt level of the radio-frequency input signals of Doherty power amplifier；If the power of radio-frequency input signals is less than preset input power, control radio-frequency input signals fully enters the main power amplifier of Doherty power amplifier；If the power of radio-frequency input signals is more than or equal to preset input power, the main power amplifier and auxiliary power amplifier of control radio-frequency input signals input Doherty power amplifier；Wherein, preset input power determines according to the pulling figure of the main power amplifier.The embodiment of the present invention improves power amplification efficiency and the gain of Doherty power amplifier.
Description
Technical field
The communication technology of the embodiment of the present invention, more particularly to a kind of RF power amplification processing method, Doherty power amplifier with
Wireless transmitting-receiving equipments.
Background technology
In the equipment that base station etc. has radio transmission-receiving function, radio-frequency power amplifier (abbreviation RF power amplification) is transceiver
Core cell.The signal that RF power amplification is responsible for the signal of DC energy to be changed into RF energy is launched, and if energy
Amount loss is excessive, then can reduce power amplification efficiency.
Therefore, prior art proposes doherty (abbreviation Doherty) power amplifier.Doherty power amplifier
Including main power amplifier and auxiliary power amplifier, two power amplifiers use different types, undertake different input letters respectively
Number power amplification function, it is whole so as to ensure so as to ensure that two power amplifiers are all operated in respective saturation region as much as possible
Doherty power amplifier all maintains higher output signal power in the range of as far as possible big input signal power.
It is auxiliary when the signal power for inputting auxiliary power amplifier exceedes preset value in existing Doherty power amplifier
Assist rate amplifier and main power amplifier work, but are preset when the signal power of input auxiliary power amplifier is no more than
During value, then auxiliary power amplifier does not work, only main power amplifier work, in this case, Doherty power amplifier
Power amplification efficiency and gain it is not high, the power amplifier for the power amplifier module being made up of Doherty power amplifier and other power amplifiers
Efficiency and gain be not also high.
The content of the invention
The embodiment of the present invention provides a kind of RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments,
To improve the power amplification efficiency of the power amplification efficiency of Doherty power amplifier and gain and whole power amplifier module and gain.
In a first aspect, the embodiment of the present invention provides a kind of RF power amplification processing method, including：
Detect the watt level of the radio-frequency input signals of Doherty power amplifier；
If the power of the radio-frequency input signals is less than preset input power, control the radio-frequency input signals all defeated
Enter the main power amplifier of the Doherty power amplifier；
If the power of the radio-frequency input signals is more than or equal to preset input power, control the radio-frequency input signals defeated
Enter the main power amplifier and auxiliary power amplifier of the Doherty power amplifier；
Wherein, the preset input power determines according to the pulling figure of the main power amplifier.
In the first possible implementation of first aspect, the radio frequency of the detection Doherty power amplifier is defeated
Enter the size of the power of signal, including：
The radio frequency input of Doherty power amplifier described in detection electric circuit inspection in the Doherty power amplifier
The size of the power of signal；
If the power of the radio-frequency input signals is less than preset input power, control the radio-frequency input signals complete
Portion inputs the main power amplifier of the Doherty power amplifier, including：
If the power of radio-frequency input signals is less than preset input power described in the detection electric circuit inspection, described
Control circuit in Doherty power amplifier controls the radio-frequency input signals to fully enter the Doherty power amplifications
The main power amplifier of device；
If the power of the radio-frequency input signals is more than or equal to preset input power, the radio frequency input letter is controlled
The main power amplifier and auxiliary power amplifier of number input Doherty power amplifier, including：
If the power of radio-frequency input signals is more than or equal to preset input power described in the detection electric circuit inspection, described
Control circuit in Doherty power amplifier controls the radio-frequency input signals shunting to be input to the Doherty power and put
The main power amplifier and auxiliary power amplifier of big device.
According to the first possible implementation of first aspect, in second of possible implementation, the detection
Circuit is wave detector, and the control circuit is power reflection device；
The radio-frequency power input of the Doherty power amplifier and the annular in the Doherty power amplifier
The first end connection of device, the second end of the circulator are connected with the input of the main power amplifier, the circulator
3rd end is connected with the input of the auxiliary power amplifier, the detection signal input of the wave detector and the radio frequency work(
Rate input is connected, and the testing result output end of the wave detector is connected with the control terminal of the power reflection device, the power
One end ground connection of reflector and the control terminal of the power reflection device and the second end of the circulator and the main power amplification
Path connection between device；
The radio frequency input of Doherty power amplifier described in detection electric circuit inspection in the Doherty power amplifier
The size of the power of signal, including：
The wave detector detects the size of the power of the radio-frequency input signals of the Doherty power amplifier；
If the power of radio-frequency input signals is less than preset input power described in the detection electric circuit inspection, described
Control circuit in Doherty power amplifier controls the radio-frequency input signals to fully enter the Doherty power amplifications
The main power amplifier of device, including：
If the power that the wave detector detects the radio-frequency input signals is less than preset input power, the power reflection
Device does not start work according to the signal of the control terminal, and the radio-frequency input signals passes through the first end of the circulator, described
Second end of circulator fully enters the main power amplifier；
If RF input power described in the detection electric circuit inspection is more than or equal to preset input power, described
Control circuit in Doherty power amplifier controls the radio-frequency input signals shunting to be input to the Doherty power and put
The main power amplifier and auxiliary power amplifier of big device, including：
If the power that the wave detector detects the radio-frequency input signals is more than or equal to preset input power, the power
Reflector works according to the signal enabling of the control terminal, first end of the radio-frequency input signals by the circulator, institute
The second end for stating circulator is input to the main power amplifier and the power reflection device, and the power reflection device will input
The power reflection and reflection power of signal are input to described auxiliary by the second end of the circulator, the 3rd end of the circulator
Assist rate amplifier.
According to second of possible implementation of first aspect, in the third possible implementation, the power
Reflector is limiter or varactor.
Second aspect, the embodiment of the present invention provide a kind of Doherty power amplifier, including：Main power amplifier and auxiliary
Assist rate amplifier, detection circuit and control circuit；
The detection circuit, the watt level of the radio-frequency input signals for detecting the Doherty power amplifier；
The control circuit, if the power for the radio-frequency input signals is less than preset input power, described in control
Radio-frequency input signals fully enters the main power amplifier of the Doherty power amplifier；If the radio-frequency input signals
Power is more than or equal to preset input power, then controls the radio-frequency input signals to input the master of the Doherty power amplifier
Power amplifier and auxiliary power amplifier；
Wherein, the preset input power determines according to the pulling figure of the main power amplifier.
In the first possible implementation of second aspect, the detection circuit is wave detector, the control circuit
For power reflection device, the radio-frequency power amplifier, in addition to：Circulator；
The radio-frequency power input of the Doherty power amplifier and the annular in the Doherty power amplifier
The first end connection of device, the second end of the circulator are connected with the input of the main power amplifier, the circulator
3rd end is connected with the input of the auxiliary power amplifier, the detection signal input of the wave detector and the radio frequency work(
Rate input is connected, and the testing result output end of the wave detector is connected with the control terminal of the power reflection device, the power
One end ground connection of reflector and the control terminal of the power reflection device and the second end of the circulator and the main power amplification
Path connection between device.
According to the first possible implementation of second aspect, in second of possible implementation, the power
Reflector is limiter or varactor.
According to second aspect, second aspect the first to second possible implementation any one, the 3rd
In the possible implementation of kind, the number of the auxiliary power amplifier is at least two.
The third aspect, the embodiment of the present invention provide a kind of wireless transmitting-receiving equipments, including：The radio frequency of the wireless transmitting-receiving equipments
Circuit includes the Doherty power amplifier any one of claim 5~8.
In the first possible implementation of the third aspect, the equipment includes：
User equipment, base station, trunking.
RF power amplification of embodiment of the present invention processing method, Doherty power amplifier and wireless transmitting-receiving equipments, pass through judgement
The watt level of radio-frequency input signals, when the power of radio-frequency input signals is less than predetermined power, whole radio-frequency input signals
Enter main power amplifier and be amplified processing, solve in the prior art when the power of radio-frequency input signals is less than default work(
During rate, because a part of radio-frequency input signals enters auxiliary power amplifier, auxiliary power amplifier does not work and causes Doherty
The problem of power amplification efficiency of power amplifier is low, power amplification efficiency and the gain of Doherty power amplifier are improved, so as to also carry
The power amplification efficiency of high whole power amplifier module and gain.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
The flow chart for the RF power amplification processing method that Fig. 1 is provided by the embodiment of the present invention one；
The flow chart for the RF power amplification processing method that Fig. 2 is provided by the embodiment of the present invention two；
The flow chart for the RF power amplification processing method that Fig. 3 A are provided by the embodiment of the present invention three；
The Doherty power amplifier for realizing RF power amplification processing method that Fig. 3 B are provided by the embodiment of the present invention three
Circuit diagram；
The configuration diagram for the Doherty power amplifier that Fig. 4 is provided by the embodiment of the present invention four；
The configuration diagram for the Doherty power amplifier that Fig. 5 is provided by the embodiment of the present invention five；
The configuration diagram for the multichannel Doherty power amplifier that Fig. 6 is provided by the embodiment of the present invention six.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The flow chart for the RF power amplification processing method that Fig. 1 is provided by the embodiment of the present invention one.The method of the present embodiment is fitted
For the power of radio-frequency input signals to be passed through into radio frequency on the premise of the power amplification efficiency of radio-frequency power amplifier and gain is improved
The situation that power amplifier is amplified.This method is performed by configuring the Doherty power amplifier in wireless transmitting-receiving equipments.
The method of the present embodiment comprises the following steps：
Step 110, detect Doherty power amplifier radio-frequency input signals watt level.
Power amplifier module is configured with wireless transmitting-receiving equipments, for the power amplifier module that is configured in base station typically by 2
~3 stage power amplifiers form, and faint digital medium-frequency signal could be amplified to required emitting power grade, therefore protect
Card is as the high power amplification efficiency of the Doherty power amplifier of final power amplifier and gain to improving whole power amplifier module
Power amplification efficiency and gain have great importance.In whole power amplifier module, before Doherty power amplifier before
One-level driving power amplifier can provide radio-frequency input signals for Doherty power amplifier, in step 110, to previous
The power for the radio-frequency input signals that level driving power amplifier provides to Doherty power amplifier is detected, and is penetrated with detection
The watt level of frequency input signal.
If the power of step 120, radio-frequency input signals is less than preset input power, control radio-frequency input signals is all defeated
Enter the main power amplifier of Doherty power amplifier.
In the step 120, if the power of radio-frequency input signals is less than preset input power, whole radio frequencies is controlled to input
Signal is input to the main power amplifier of Doherty power amplifier, and main power amplifier enters to the power of radio-frequency input signals
Row amplification.
If the power of step 130, radio-frequency input signals is more than or equal to preset input power, control radio-frequency input signals is defeated
Enter the main power amplifier and auxiliary power amplifier of Doherty power amplifier.
In step 130, if the power of radio-frequency input signals is more than or equal to preset input power, control radio frequency input letter
Number input Doherty power amplifier main power amplifier and auxiliary power amplifier, main power amplifier and auxiliary power
Amplifier is amplified to the power of the radio-frequency input signals of input respectively.
Specifically, it is by the power for the radio-frequency input signals for detecting Doherty power amplifier, the radio frequency of detection is defeated
Enter the power of signal compared with preset input power, if the power of radio-frequency input signals is less than preset input power, control
Whole radio-frequency input signals is input to the main power amplifier of Doherty power amplifier, and main power amplifier is defeated to radio frequency
The power for entering signal is amplified；If the power of radio-frequency input signals is more than or equal to preset input power, control radio frequency input
Signal inputs the main power amplifier and auxiliary power amplifier of Doherty power amplifier, main power amplifier and auxiliary work(
Rate amplifier is amplified to the power of the radio-frequency input signals of input respectively, and wherein preset input power refers to start auxiliary work(
The reference value that rate amplifier is started working, when the power for being input to auxiliary power amplifier is more than or equal to preset input power
When, start auxiliary power amplifier and start working, preset input power determines according to the pulling figure of main power amplifier, main work(
The pulling figure of rate amplifier refers to the characteristic of main power amplifier traction auxiliary power amplifier work.
The RF power amplification processing method that the present embodiment provides, by judging the watt level of radio-frequency input signals, in radio frequency
When the power of input signal is less than predetermined power, whole radio-frequency input signals enters main power amplifier and is amplified place
Reason, is solved in the prior art when the power of radio-frequency input signals is less than predetermined power, due to a part of radio-frequency input signals
Into auxiliary power amplifier, auxiliary power amplifier does not work again causes the power amplification efficiency of Doherty power amplifier low
Problem, power amplification efficiency and the gain of Doherty power amplifier are improved, so as to also improve the power amplifier of whole power amplifier module effect
Rate and gain.
The flow chart for the RF power amplification processing method that Fig. 2 is provided by the embodiment of the present invention two.The present embodiment is with above-mentioned reality
Based on applying example one, further it is optimized, reference picture 2, the method for the present embodiment can include：
The radio frequency input of detection electric circuit inspection Doherty power amplifier in step 210, Doherty power amplifier
The size of the power of signal.
If step 220, the power of detection electric circuit inspection radio-frequency input signals are less than preset input power, Doherty work(
Control circuit control radio-frequency input signals in rate amplifier fully enters the main power amplifier of Doherty power amplifier.
If step 230, the power of detection electric circuit inspection radio-frequency input signals are more than or equal to preset input power,
Control circuit control radio-frequency input signals shunting in Doherty power amplifier is input to the master of Doherty power amplifier
Power amplifier and auxiliary power amplifier.
The RF power amplification processing method that the present embodiment provides, by the watt level for detecting electric circuit inspection radio-frequency input signals
And by the power of radio-frequency input signals compared with preset input power, it is less than predetermined power in the power of radio-frequency input signals
When, the whole radio-frequency input signals of control circuit control enters main power amplifier and is amplified processing, solves existing skill
In art when the power of radio-frequency input signals is less than predetermined power, due to a part of radio-frequency input signals into auxiliary power amplify
Device, but auxiliary power amplifier do not work cause Doherty power amplifier power amplifier gain it is low the problem of, improve
The power amplifier gain of Doherty power amplifier, so as to also improve the power amplifier gain of whole power amplifier module.
The flow chart for the RF power amplification processing method that Fig. 3 A are provided by the embodiment of the present invention three.The present embodiment is with above-mentioned reality
Based on applying example two, further it is optimized, the detection circuit in above-described embodiment two can be realized by wave detector, control
Circuit can realize that in the present embodiment, reference picture 3A, the method for the present embodiment can include by power reflection device：
Step 310, wave detector detect the size of the power of the radio-frequency input signals of Doherty power amplifier.
If the power of step 320, wave detector detection radio-frequency input signals is less than preset input power, power reflection device root
Do not start work according to the signal of control terminal, radio-frequency input signals is all defeated by the second end of the first end of circulator, circulator
Enter to main power amplifier.
For example, power reflection device can be limiter or varactor, use varactor diodes as power
During reflector, if the power of the radio-frequency input signals of wave detector detection is less than preset input power, from the signal of wave detector output
Voltage can not cause varactor start work, radio-frequency input signals can be complete by the first end of circulator and the second end
Portion is input to the input of main power amplifier, i.e., because the P-type semiconductor end of varactor is grounded, from wave detector output
The voltage of signal is applied to the N-type semiconductor end of varactor, and forward voltage is applied with equivalent to varactor so that
The PN junction of varactor is thinning, or even the PN junction of varactor disappears when varactor forward conduction, therefore transfiguration
Diode will not have an impact to the load impedance of main power amplifier, and in this case, main power amplifier is in load
Whole radio-frequency input signals of input are amplified in the state of impedance matching is fine.Power reflection device is used as using limiter
Similar with operation principle when using varactor diodes as power reflection device, here is omitted.
If the power of step 330, wave detector detection radio-frequency input signals is more than or equal to preset input power, power reflection
Device is worked according to the signal enabling of control terminal, and radio-frequency input signals is inputted by the first end of circulator, the second end of circulator
To main power amplifier and power reflection device, and power reflection device the power reflection of input signal and reflection power are passed through it is described
Second end of circulator, the 3rd end of circulator are input to auxiliary power amplifier.
In a step 330, equally illustrated with using varactor diodes as power reflection device, if wave detector detection is penetrated
The power of frequency input signal is more than or equal to preset input power, from the voltage of the signal of wave detector output varactor is opened
Start building to make, radio-frequency input signals is input to main power amplifier and transfiguration by the first end of circulator, the second end of circulator
Diode.Explanation is needed exist for, varactor work refers to that the power of input signal can be reflected, in detail
For, because the P-type semiconductor end of varactor is grounded, varactor is applied to from the voltage of the signal of wave detector output
N-type semiconductor end when, be applied with backward voltage equivalent to varactor, varactor now is in cut-off shape
State, the varactor under this state can be considered as electric capacity, therefore the capacitance of varactor can influence main power amplifier
Input impedance so that the input impedance of main power amplifier changes, and the input impedance of main power amplifier changes
When, varactor is by the power reflection of input signal.Second end of the power by circulator, ring through varactor reflection
The 3rd end input auxiliary power amplifier of shape device, promotes auxiliary power amplifier to start working, carries out load balance factor.Part is entered
The radio-frequency input signals for becoming owner of power amplifier is still amplified through main power amplifier.
Further, " Traffic Tracking " technologies are by adjusting power supply device (Power due to existing
Supply Unit, abbreviation PSU) voltage adjust the grid voltage of main power amplifier and auxiliary power amplifier, so as to adjust
The power output of whole Doherty power amplifier.For example, it is desired to when the power of output is big, grid voltage is heightened.Need what is exported
Power hour, turn down grid voltage.But due to typically thering is very big filter capacitor in the grid of radio-frequency power amplifier
Ensure the performance of Doherty power amplifier, and filter capacitor is substantially in microfarad range, for so big capacitive load, at present
PSU be to be unable to reach so big carrying load ability, i.e., can not be adjusted rapidly according to the transient change of broadband signal grid electricity
Pressure, just no longer it is adjusted in a longer time section after often adjusting a grid voltage, for example, needing to export on daytime
When high-power, grid voltage is heightened once, when needing to export small-power at night, grid voltage turned down once.Therefore, exist
PSU is just more difficult to keep up with the transient change of radio-frequency input signals when the bandwidth of radio-frequency input signals is wider, also cannot be to grid electricity
Pressure is adjusted.But.The RF power amplification processing method that the present embodiment provides, not only may be used from the voltage of the signal of wave detector output
To control whether varactor starts work, and can be to the power distribution of main power amplifier and auxiliary power amplifier
It is adjusted, when make it that varactor starts work from the voltage of the signal of wave detector output, main power amplification can be adjusted
Power distribution between device and auxiliary power amplifier, so as to adjust the defeated of main power amplifier and auxiliary power amplifier
Go out power, because the voltage from the signal of wave detector output is relevant with the size of the power of radio-frequency input signals, radio frequency input letter
Number power it is bigger, also bigger from the voltage of the signal of wave detector output, the voltage of signal of wave detector output can pass through work(
Rate reflector makes main power amplifier and auxiliary power amplifier obtain preferable power-division ratios, so as to improve main power amplification
The power output and gain of device and auxiliary power amplifier.It can not cause varactor from the voltage of the signal of wave detector output
When starting work, master can be adjusted by adjusting the power distribution of main power amplifier from the voltage of the signal of wave detector output
The power output of power amplifier.Therefore, the transient change of radio-frequency input signals is adapted to adjust Doherty power amplifications
The power output of main power amplifier and auxiliary power amplifier in device.
The present embodiment provide RF power amplification processing method, by wave detector detect radio-frequency input signals power it is big
Small, when the power of radio-frequency input signals is less than preset input power, power reflection device does not start work, and radio-frequency input signals is whole
Main power amplifier is input to be amplified.When the power of radio-frequency input signals is more than or equal to preset input power, main power is put
Big device and auxiliary power amplifier are amplified to the radio-frequency input signals of input.Because the power in radio-frequency input signals is less than
During preset input power, main power amplifier is matching good state in load impedance, almost without echo, now
The gain of Doherty power amplifier subtracts the Insertion Loss of circulator and power reflection device for the gain of main power amplifier, in work(
When rate reflector is limiter, because the Insertion Loss of circulator and limiter is very small, typically in below 0.2dB, thus with it is existing
Technology is compared, if in the case of using same driving power amplifier, improve Doherty power amplifier gain and
Power amplification efficiency, simulation result show, the traditional Doherty power of the ratio of gains of the Doherty power amplifier that this implementation provides
At least high 3dB of the gain of amplifier.When the power of radio-frequency input signals is more than or equal to preset input power, it is anti-to employ power
Emitter and circulator adjust the radio-frequency input signals into main power amplifier and peak power amplifier, improve
The gain of Doherty power amplifier and power amplification efficiency, so as to also improve the gain of whole power amplifier module and power amplification efficiency.
For the clearer RF power amplification processing method for understanding the present embodiment and being provided, Fig. 3 B are coordinated to be situated between herein
Continue, the circuit for the Doherty power amplifier for realizing RF power amplification processing method that Fig. 3 B are provided by the embodiment of the present invention three
Figure, reference picture 3B, radio-frequency power input 301 and the circulator in Doherty power amplifier of Doherty power amplifier
302 first end connection, the second end of circulator 302 is connected with the input of main power amplifier 303, and the of circulator 302
Three ends are connected with the input of auxiliary power amplifier 304, detection signal input and the radio-frequency power input of wave detector 305
301 connections, the testing result output end of wave detector 305 are connected with the control terminal of power reflection device 306, power reflection device 306
One end is grounded and the path between the control terminal of power reflection device 306 and the second end of circulator 302 and main power amplifier 303
Connection.
Specifically, it is connected by the detection signal input of wave detector 305 with radio-frequency power input 301, wave detector
305 can detect the power of the radio-frequency input signals of the radio-frequency power input 301 of Doherty power amplifier, wave detector 305
When detecting that the power of radio-frequency input signals is less than preset input power, power reflection device 306 does not start work, radio frequency input letter
Number fully entering main power amplifier 303 by the first end and the second end of circulator 302 is amplified, main power amplification
Device 303 is to exporting radio-frequency power by 90 degree of phase-shift lines after radio-frequency input signals processing.Wave detector 305 detects that radio frequency inputs
When the power of signal is more than or equal to preset input power, power reflection device 306 starts work, and radio-frequency input signals passes through circulator
302 first end, the second end of circulator 302 are input to main power amplifier 303 and power reflection device 306, power reflection device
306 are input to the power reflection of radio-frequency input signals and reflection power by the second end of circulator 302 and the 3rd end-fire frequency
The reflection power of input is amplified by auxiliary power amplifier 304, auxiliary power amplifier 304, and main power amplifier 303 will
The radio-frequency input signals for being input to main power amplifier 303 is amplified, and main power amplifier 303 is to radio-frequency input signals processing
Reflection power after radio-frequency power and auxiliary power amplifier 304 processing exported afterwards after 90 degree of phase-shift lines passes through radio frequency work(
Rate output end exports.
The configuration diagram for the Doherty power amplifier that Fig. 4 is provided by the embodiment of the present invention four.In the present embodiment,
Doherty power amplifier includes：Main power amplifier 401 and auxiliary power amplifier 402, detection circuit 403 and control
Circuit 404.
Wherein, the watt level that circuit 403 is used to detect the radio-frequency input signals of Doherty power amplifier is detected；Control
If the power that circuit 404 processed is used for radio-frequency input signals is less than preset input power, control radio-frequency input signals fully enters
The main power amplifier of Doherty power amplifier；If the power of radio-frequency input signals is more than or equal to preset input power, control
The main power amplifier and auxiliary power amplifier of radio-frequency input signals input Doherty power amplifier processed, preset input work
Rate determines according to the pulling figure of main power amplifier.
The Doherty power amplifier that the present embodiment provides, by judging the watt level of radio-frequency input signals, in radio frequency
When the power of input signal is less than predetermined power, whole radio-frequency input signals enters main power amplifier and is amplified place
Reason, is solved in the prior art when the power of radio-frequency input signals is less than predetermined power, due to a part of radio-frequency input signals
Into auxiliary power amplifier, auxiliary power amplifier does not work again causes the power amplification efficiency of Doherty power amplifier low
Problem, improve the power amplification efficiency of Doherty power amplifier.
The configuration diagram for the Doherty power amplifier that Fig. 5 is provided by the embodiment of the present invention five.It is more than the present embodiment
Based on stating example IV, further it is optimized, reference picture 5, the Doherty power amplifier of the present embodiment includes：It is main
Power amplifier 501 and auxiliary power amplifier 502, wave detector 503, power reflection device 504 and circulator 505.
Wherein, power reflection device can be limiter or varactor.Main power amplifier 501, auxiliary power are put
Annexation greatly between device 502, wave detector 503, power reflection device 504 and circulator 505 is as follows：Doherty power amplifications
The radio-frequency power input of device is connected with the first end of the circulator 505 in Doherty power amplifier, and the of circulator 505
Two ends are connected with the input of main power amplifier 501, the 3rd end of circulator 505 and the input of auxiliary power amplifier 502
End connection, the detection signal input of wave detector 503 are connected with radio-frequency power input, the testing result output of wave detector 503
End is connected with the control terminal of power reflection device 504, one end ground connection of power reflection device 504 and the control terminal of power reflection device 504
Path between the second end of circulator 505 and main power amplifier 501 is connected.
The Doherty power amplifier that the present embodiment provides, by using the small circulator of Insertion Loss, and radio-frequency power is defeated
Entering end to be connected with the first end of circulator, the second end of circulator is connected with the input of main power amplifier, and the of circulator
The input of three ends and auxiliary power amplifier connects, so as to realize that it is pre- that the power in wave detector detection radio-frequency input signals is less than
If during input power, whole radio-frequency input signals can input main work(by the first end of circulator, the second end of circulator
Rate amplifier, improve power amplification efficiency and the gain of Doherty power amplifier.In the power of wave detector detection radio-frequency input signals
During more than or equal to preset input power, the second end that the power that is reflected by power reflection device can be by circulator, circulator
The 3rd end input auxiliary power amplifier, promote auxiliary power amplifier carry out load balance factor, improve main power amplifier and
The combining power output of auxiliary power amplifier, so as to improve the gain of Doherty power amplifier and power amplification efficiency, so as to
Also improve gain and the power amplification efficiency of whole power amplifier module.
Further, the number of auxiliary power amplifier can be at least two, when having two in Doherty power amplifier
During individual peak power amplifier, the configuration diagram of Doherty power amplifier is as shown in fig. 6, Fig. 6 is the embodiment of the present invention six
The configuration diagram of the multichannel Doherty power amplifier provided.Reference picture 6, Fig. 6 is substantially similar with Fig. 5, the area with Fig. 5
It is not, can be connected at the 3rd end of circulator 505 with the input of two auxiliary power amplifiers, needs exist for explanation
It is that the present invention is not limited the number of the auxiliary power amplifier of the three-terminal link of circulator, i.e., auxiliary power amplifies
The number of device can be adjusted according to actual conditions, herein only with two auxiliary powers of three-terminal link of circulator 505
Amplifier illustrates.The reflection power reflected from power reflection device 504 can start one of peak power amplifier
Work, carry out load balance factor.Can also be according to actual conditions, i.e., when the peak power exported from radio-frequency power output end can not expire
When foot is actually needed, peak power amplifier 502 and peak power amplifier can be started by adjusting preset input power
502 ' all work, and carry out load balance factor.Shown in the operation principle and technique effect and Fig. 5 of the multichannel Doherty power amplifier
Doherty power amplifier operation principle it is similar with technique effect, here is omitted.
It should be noted that the embodiment of the present invention also provides a kind of wireless transmitting-receiving equipments, the wireless transmitting-receiving equipments can be
User equipment, base station or trunking.What the radio circuit of the wireless transmitting-receiving equipments can include mentioning in above-described embodiment appoints
One Doherty power amplifier of meaning.The Doherty power amplifier can be used for performing any embodiment institute in Fig. 1~3A
The method and technology scheme shown, its implementing principle and technical effect is similar, and here is omitted.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (8)
- A kind of 1. RF power amplification processing method, it is characterised in that including：The radio frequency input of Doherty power amplifier described in detection electric circuit inspection in doherty Doherty power amplifier The size of the power of signal；If the power of radio-frequency input signals is less than preset input power, the Doherty work(described in the detection electric circuit inspection The control circuit control radio-frequency input signals in rate amplifier fully enters the main power of the Doherty power amplifier Amplifier；If the power of radio-frequency input signals is more than or equal to preset input power described in the detection electric circuit inspection, described Control circuit in Doherty power amplifier controls the radio-frequency input signals shunting to be input to the Doherty power and put The main power amplifier and auxiliary power amplifier of big device；Wherein, the preset input power determines according to the pulling figure of the main power amplifier；The detection circuit is wave detector, and the control circuit is power reflection device；The radio-frequency power input of the Doherty power amplifier and the circulator in the Doherty power amplifier First end is connected, and the second end of the circulator is connected with the input of the main power amplifier, and the 3rd of the circulator the End is connected with the input of the auxiliary power amplifier, and the detection signal input and the radio-frequency power of the wave detector are defeated Enter end connection, the testing result output end of the wave detector is connected with the control terminal of the power reflection device, the power reflection One end ground connection of device and the control terminal of the power reflection device and the second end of the circulator and the main power amplifier it Between path connection.
- 2. according to the method for claim 1, it is characterised in that the detection circuit inspection in the Doherty power amplifier The size of the power of the radio-frequency input signals of the Doherty power amplifier is surveyed, including：The wave detector detects the size of the power of the radio-frequency input signals of the Doherty power amplifier；If the power of radio-frequency input signals is less than preset input power described in the detection electric circuit inspection, described Control circuit in Doherty power amplifier controls the radio-frequency input signals to fully enter the Doherty power amplifications The main power amplifier of device, including：If the power that the wave detector detects the radio-frequency input signals is less than preset input power, the power reflection device root Do not start work, first end, the annular of the radio-frequency input signals by the circulator according to the signal of the control terminal Second end of device fully enters the main power amplifier；If the power of radio-frequency input signals is more than or equal to preset input power described in the detection electric circuit inspection, described Control circuit in Doherty power amplifier controls the radio-frequency input signals shunting to be input to the Doherty power and put The main power amplifier and auxiliary power amplifier of big device, including：If the power that the wave detector detects the radio-frequency input signals is more than or equal to preset input power, the power reflection Device works according to the signal enabling of the control terminal, first end of the radio-frequency input signals by the circulator, the ring Second end of shape device is input to the main power amplifier and the power reflection device, and the power reflection device is by input signal Power reflection and reflection power the auxiliary work(is input to by the second end of the circulator, the 3rd end of the circulator Rate amplifier.
- 3. according to the method for claim 2, it is characterised in that the power reflection device is limiter or the pole of transfiguration two Pipe.
- A kind of 4. Doherty power amplifier, it is characterised in that including：Main power amplifier and auxiliary power amplifier, detection Circuit and control circuit；The detection circuit, the watt level of the radio-frequency input signals for detecting the Doherty power amplifier；The control circuit, if the power for the radio-frequency input signals is less than preset input power, control the radio frequency Input signal fully enters the main power amplifier of the Doherty power amplifier；If the power of the radio-frequency input signals More than or equal to preset input power, then the radio-frequency input signals is controlled to input the main power of the Doherty power amplifier Amplifier and auxiliary power amplifier；Wherein, the preset input power determines according to the pulling figure of the main power amplifier；The detection circuit is wave detector, and the control circuit is power reflection device；The radio-frequency power amplifier, in addition to：Circulator；The radio-frequency power input of the Doherty power amplifier and the circulator in the Doherty power amplifier First end is connected, and the second end of the circulator is connected with the input of the main power amplifier, and the 3rd of the circulator the End is connected with the input of the auxiliary power amplifier, and the detection signal input and the radio-frequency power of the wave detector are defeated Enter end connection, the testing result output end of the wave detector is connected with the control terminal of the power reflection device, the power reflection One end ground connection of device and the control terminal of the power reflection device and the second end of the circulator and the main power amplifier it Between path connection.
- 5. Doherty power amplifier according to claim 4, it is characterised in that the power reflection device is limiter Or varactor.
- 6. the Doherty power amplifier according to claim 4 or 5, it is characterised in that the auxiliary power amplifier Number is at least two.
- 7. a kind of wireless transmitting-receiving equipments, it is characterised in that the radio circuit of the wireless transmitting-receiving equipments includes claim 4~6 Any one of Doherty power amplifier.
- 8. wireless transmitting-receiving equipments according to claim 7, it is characterised in that the equipment includes：User equipment, base station, trunking.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/083554 WO2015035643A1 (en) | 2013-09-16 | 2013-09-16 | Radio frequency power amplifier processing method, doherty power amplifier and wireless transceiver device |
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| CN105229922A CN105229922A (en) | 2016-01-06 |
| CN105229922B true CN105229922B (en) | 2018-01-09 |
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| CN201380076710.6A Active CN105229922B (en) | 2013-09-16 | 2013-09-16 | RF power amplification processing method, Doherty power amplifier and wireless transmitting-receiving equipments |
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| WO (1) | WO2015035643A1 (en) |
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| CN110380691A (en) * | 2018-04-12 | 2019-10-25 | 中兴通讯股份有限公司 | A kind of power amplification circuit and device based on Doherty power amplifier |
| CN110011721B (en) * | 2019-03-29 | 2021-07-16 | 睿高(广州)通信技术有限公司 | Power amplifier equipment and power amplifier system in satellite communication system |
| CN110504924B (en) * | 2019-07-19 | 2020-09-25 | 南京国博电子有限公司 | Doherty power amplifier and input signal processing method thereof |
| CN113810023B (en) * | 2021-08-31 | 2023-05-09 | 电子科技大学 | Impedance modulation system and method for digital power transmitting chip |
| CN219287468U (en) * | 2023-01-12 | 2023-06-30 | 飞骧科技(无锡)有限公司 | Radio frequency power amplifier and radio frequency power amplifier module |
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| US6097252A (en) * | 1997-06-02 | 2000-08-01 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
| CN101488790A (en) * | 2009-02-24 | 2009-07-22 | 华为技术有限公司 | Power amplification apparatus and transmitter |
| CN101567665A (en) * | 2008-12-26 | 2009-10-28 | 芯通科技（成都）有限公司 | Digital Doherty power amplifier |
| CN101834571A (en) * | 2010-05-13 | 2010-09-15 | 上海图越电子有限公司 | Efficient linear power amplifier circuit |
| CN102064774A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Implementation method of power amplifying circuit and power amplifying device |
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- 2013-09-16 WO PCT/CN2013/083554 patent/WO2015035643A1/en active Application Filing
- 2013-09-16 CN CN201380076710.6A patent/CN105229922B/en active Active
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|---|---|---|---|---|
| US6097252A (en) * | 1997-06-02 | 2000-08-01 | Motorola, Inc. | Method and apparatus for high efficiency power amplification |
| CN101567665A (en) * | 2008-12-26 | 2009-10-28 | 芯通科技（成都）有限公司 | Digital Doherty power amplifier |
| CN101488790A (en) * | 2009-02-24 | 2009-07-22 | 华为技术有限公司 | Power amplification apparatus and transmitter |
| CN102064774A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Implementation method of power amplifying circuit and power amplifying device |
| CN101834571A (en) * | 2010-05-13 | 2010-09-15 | 上海图越电子有限公司 | Efficient linear power amplifier circuit |
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| WO2015035643A1 (en) | 2015-03-19 |
| CN105229922A (en) | 2016-01-06 |
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