CN106059522B - A kind of control method and circuit of the power amplifier without overshoot - Google Patents
A kind of control method and circuit of the power amplifier without overshoot Download PDFInfo
- Publication number
- CN106059522B CN106059522B CN201610338081.5A CN201610338081A CN106059522B CN 106059522 B CN106059522 B CN 106059522B CN 201610338081 A CN201610338081 A CN 201610338081A CN 106059522 B CN106059522 B CN 106059522B
- Authority
- CN
- China
- Prior art keywords
- power
- resistance
- differential amplifier
- amplifier circuit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
Abstract
The invention discloses a kind of control method and circuit of the power amplifier without overshoot, this method includes：When power amplifier power-up, to electrically controlled attenuator plus an initial evanescent voltage, thus one biggish pad value of setting；When the power-level detector of directional coupler output is when zero and first change between reference level, keep the size of evanescent voltage constant；When power-level detector changes between the first reference level and the second reference level, control evanescent voltage increases with power-level detector and is increased；When power-level detector changes between the second reference level and third reference level, control evanescent voltage increases with power-level detector and is reduced；When power-level detector is greater than third reference level, the size of evanescent voltage is kept to be equal to initial evanescent voltage constant.In power amplifier power-up, the present invention makes signal decay to proper level, so that output power be avoided to generate overshoot by setting a biggish pad value to electrically controlled attenuator.
Description
Technical field
The present invention relates to power control field, in particular to a kind of control method and circuit of the power amplifier without overshoot.
Background technique
The continuous development of communication countermeasure technology proposes new demand to the power control of power amplifier, such as a new generation
High-speed frequency-hopping communication/interference system is required to realize power emission faster more stable control, and this requires power amplifications
Device must satisfy the characteristics such as fast response time, power output overshoot are small and power output flexible in size is reliable.Modern communications pair
Multicarrier, high peak-to-average power ratio characteristic is widely presented in interference pumping signal in anti-system, this crosses punching performance to power amplifier
Design brings new challenge.
In the automatic level control circuit system of existing power amplifier, fixed ampllitude work in broadband can generate apparent power
Overshooting problem causes PIN pipe to bear excessive high pressure in a short time so that output power reaches saturation peak in a short time,
It is be easy to cause permanent damage, power tube work its service life under maximum saturation output power can shorten, and easily be burned out,
The functional reliability of system is not only greatly reduced, but also also increases the cost and difficulty of design power supply and filter switch.
There is " lag " effects for traditional simulation automatic level control circuit, i.e., deposit in the ascent stage of power amplifier output power
In one-stage control dead zone, only after output power reaches some thresholding, automatic level control circuit just starts that power is inhibited to put
The control voltage of the electrically controlled attenuator of big device, due to " lag " of closed control circuit, so that in power amplifier initial start stage,
Output power can generate overshoot.
Summary of the invention
In order to solve to lead to power amplifier initial start stage, output work using traditional simulation automatic level control circuit
Rate can lead to the problem of overshoot, and the present invention provides a kind of control method and circuit of the power amplifier without overshoot.
According to one aspect of the present invention, the present invention provides a kind of control method of the power amplifier without overshoot, including：
When power amplifier power-up, an initial decaying electricity is added to the electrically controlled attenuator of the power amplifier
Pressure, so that a biggish pad value be arranged to the electrically controlled attenuator；
When the power-level detector that the directional coupler of the power amplifier exports changes between reference level in zero and first
When, keep the size of the evanescent voltage constant；
When the power-level detector changes between first reference level and the second reference level, the decaying is controlled
Voltage increases with the power-level detector and is increased, reduces with the power-level detector and reduce；
When the power-level detector changes between second reference level and third reference level, the decaying is controlled
Voltage increases with the power-level detector and is reduced, reduces with the power-level detector and increase；
When the power-level detector is greater than the third reference level, the size of the evanescent voltage is kept to be equal to initially
Evanescent voltage is constant；
Wherein, when the evanescent voltage increases, the pad value of the electrically controlled attenuator reduces；When the evanescent voltage subtracts
Hour, the pad value of the electrically controlled attenuator increases.
Another aspect according to the present invention, the present invention provides a kind of control circuit of the power amplifier without overshoot, including
First differential amplifier circuit, the second differential amplifier circuit, third differential amplifier circuit, the first potentiometer, first diode and
Two diodes；
The first input end of first differential amplifier circuit connects the inspection of the directional coupler output of the power amplifier
Wave level, second input the first preset reference level of termination；
The first input end of second differential amplifier circuit connects the first preset reference level, and the second input terminates the function
The power-level detector of the directional coupler output of rate amplifier；
The output of second differential amplifier circuit terminates the anode of the first diode；The first diode is born
After pole is connect with the output end of first differential amplifier circuit, the second input terminal of the third differential amplifier circuit is connect；Institute
The first input end for stating third differential amplifier circuit connects the second preset reference level；
First termination supply voltage of first potentiometer, second end and third are terminating second diode just
Pole；
The cathode of second diode connects the output end of the third differential amplifier circuit, and connecting pin is to the power
The electrically controlled attenuator output attenuatoin voltage of amplifier, controls the pad value of the electrically controlled attenuator.
Wherein, first differential amplifier circuit includes the first operational amplifier, first resistor, second resistance, third electricity
Resistance, the 4th resistance and first capacitor；
The electrode input end of first operational amplifier connect respectively the first resistor first end and it is described second electricity
The first end of resistance；First input end of the second end of the first resistor as first differential amplifier circuit；Described second
The second end of resistance is grounded；
The negative input of first operational amplifier connects the first end of the 3rd resistor；The of the 3rd resistor
Second input terminal of two ends as first differential amplifier circuit；
The first end of 4th resistance is connect with the first end of the first capacitor is followed by first operational amplifier
Negative input, the second end of the 4th resistance is connect with the second end of the first capacitor to be followed by first operation and puts
The output end of big device；
The output end of the second end of 4th resistance, the second end of the first capacitor and first operational amplifier
Output end of the connecting pin as first differential amplifier circuit.
Wherein, second differential amplifier circuit includes second operational amplifier, the 5th resistance, the 6th resistance, the 7th electricity
Resistance, the 8th resistance and the second capacitor；
The electrode input end of the second operational amplifier connects the first end and the 6th resistance of the 5th resistance respectively
First end；First input end of the second end of 5th resistance as second differential amplifier circuit；6th resistance
Second end ground connection；
The negative input of the second operational amplifier connects the first end of the 7th resistance；The of 7th resistance
Second input terminal of two ends as second differential amplifier circuit；
The first end of 8th resistance is connect with the first end of second capacitor is followed by the second operational amplifier
Negative input, the second end of the 8th resistance is connect with the second end of second capacitor to be followed by second operation and puts
The output end of big device；
The output end of the second end of 8th resistance, the second end of second capacitor and the second operational amplifier
Output end of the connecting pin as second differential amplifier circuit.
Wherein, the third differential amplifier circuit includes third operational amplifier, the 9th resistance, the tenth resistance, the 11st
Resistance, twelfth resistor and third capacitor；
The electrode input end of the third operational amplifier connects the first end and the tenth resistance of the 9th resistance respectively
First end；First input end of the second end of 9th resistance as the third differential amplifier circuit；Tenth resistance
Second end ground connection；
The negative input of the third operational amplifier connects the first end of the eleventh resistor；The eleventh resistor
Second input terminal of the second end as first differential amplifier circuit；
The first end of the twelfth resistor connect with the first end of the third capacitor and is followed by the third operation amplifier
The negative input of device, the second end of the twelfth resistor is connect with the second end of the third capacitor is followed by the third fortune
Calculate the output end of amplifier；
The output of the second end of the twelfth resistor, the second end of the third capacitor and the third operational amplifier
Output end of the connecting pin at end as the third differential amplifier circuit.
Wherein, the circuit further includes the second potentiometer and third potentiometer；
The connecting pin at the first termination supply voltage of second potentiometer, second end and third end exports the first default base
Quasi- level connects the first input of the second input terminal and second differential amplifier circuit of first differential amplifier circuit respectively
End；
The connecting pin at the first termination supply voltage of the third potentiometer, second end and third end exports the second default base
Quasi- level connects the first input end of the third difference channel.
The beneficial effect of the embodiment of the present invention is：Power amplifier power-up when, to electrically controlled attenuator set one it is biggish
Signal is decayed to proper level when making not having started closed-loop control response initially, avoids traditional analog control by pad value
Circuit processed starts to control the problem of lag causes overshoot；Then evanescent voltage is corrected further according to the power-level detector of directional coupler output：
When power, which is started from scratch, to be established, it is gradually increased evanescent voltage, then respective opposed reduces decaying to corresponding electrically controlled attenuator, until
Until the output power for reaching demand；When power continues to increase, it is gradually reduced evanescent voltage, electricity is made to adjust controller increase decaying
Value.It is controlled in power-level detector in preset reference always in this way, circuit is in a kind of working condition of dynamic equilibrium always, real
Show automatic growth control, prevents output power from generating overshoot.
Detailed description of the invention
Fig. 1 is a kind of flow chart for controlling method of the power amplifier without overshoot provided in an embodiment of the present invention；
Fig. 2 is a kind of circuit diagram for controlling circuit of the power amplifier without overshoot provided in an embodiment of the present invention.
Specific embodiment
Design concept of the invention is：In power amplifier power-up, a biggish pad value is set to electrically controlled attenuator,
Signal is decayed to proper level when making not having started closed-loop control response initially, traditional analog control circuit is avoided to start to control
Overshooting problem caused by lagging；Then evanescent voltage is corrected further according to the power-level detector of directional coupler output, makes power-level detector
Always it is controlled in preset reference, circuit is in a kind of working condition of dynamic equilibrium always, to realize automatic gain control
System prevents output power from generating overshoot.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of flow chart for controlling method of the power amplifier without overshoot provided in an embodiment of the present invention.Such as Fig. 2 institute
Show, control method of the power amplifier without overshoot provided in an embodiment of the present invention includes：
Step S110：When power amplifier power-up, an initial decaying is added to the electrically controlled attenuator of power amplifier
Voltage, so that a biggish pad value be arranged to electrically controlled attenuator.
Step S120：When the power-level detector that the directional coupler of power amplifier exports is in zero and first between reference level
When variation, keep the size of evanescent voltage constant.
When power amplifier power-up, power-level detector does not reach before starting to control threshold value, exports and fixes to directional coupler
Evanescent voltage, to give attenuation controller that a biggish pad value is arranged, when making not have started initially closed-loop control response
Signal is decayed to proper level, conventional control circuit is avoided and starts to control lag, generates asking for overshoot so as to cause output power
Topic.
Step S130：When power-level detector changes between the first reference level and the second reference level, control decaying electricity
Pressure increases with power-level detector and is increased, reduces with power-level detector and reduce.
During power starts from scratch foundation, power-level detector is gradually increased, when power-level detector is greater than the first benchmark electricity
After flat, control evanescent voltage increases with power-level detector and is increased, and electrically controlled attenuator reversely reduces pad value accordingly, until reaching
Until the output power of demand.
Step S140：When power-level detector changes between the second reference level and third reference level, control decaying electricity
Pressure increases with power-level detector and is reduced, reduces with power-level detector and increase.
When power continues to increase, after power-level detector is greater than the second reference level, control evanescent voltage increases with power-level detector
And reduce, so that electrically controlled attenuator is increased pad value, to reduce output power.
Step S150：When power-level detector is greater than third reference level, the size of evanescent voltage is kept to be equal to initial decline
Powered down pressure is constant, and electrically controlled attenuator maintains a higher pad value.In this way, circuit is in always in whole work process
A kind of working condition of dynamic equilibrium, is controlled in power-level detector in preset reference always, realizes automatic growth control, prevents
Only output power generates overshoot.
Fig. 2 is a kind of circuit diagram for controlling circuit of the power amplifier without overshoot provided in an embodiment of the present invention.Such as Fig. 2 institute
Show, circuit of the control power amplifier provided in an embodiment of the present invention without overshoot includes the first differential amplifier circuit, the second difference
Amplifying circuit, third differential amplifier circuit, the first potentiometer RP1, first diode D1 and the second diode D2.
The first input end of first differential amplifier circuit connects the power-level detector of the directional coupler output of power amplifier, the
Two input the first preset reference level of termination.When power-level detector is less than the first preset reference level, the first differential amplifier circuit
Non voltage output；When power-level detector is greater than the first preset reference level, the first differential amplifier circuit has voltage output, and defeated
The size of voltage increases with the increase of power-level detector and the difference of the first preset reference level out.
The first input end of second differential amplifier circuit connects the first preset reference level, the second input termination power amplifier
Directional coupler output power-level detector.When power-level detector is greater than the first preset reference level, the second differential amplifier circuit
Non voltage output；When power-level detector is less than the first preset reference level, the second differential amplifier circuit has voltage output, and defeated
The size of voltage increases with the increase of power-level detector and the difference of the first preset reference level out.
The anode of the output termination first diode D1 of second differential amplifier circuit；The cathode of first diode D1 and first
After the output end connection of differential amplifier circuit, the second input terminal of third differential amplifier circuit is connect；Third differential amplifier circuit
First input end connects the second preset reference level.When the received level of the second input terminal is greater than the second pre- reference level, third
Differential amplifier circuit Non voltage output；When the received level of the second input terminal is less than the second preset reference level, third difference
Amplifying circuit has voltage output, and the size of output voltage is with the second preset reference level and the received level of the second input terminal
Difference increase and increase.
The first termination supply voltage VCC of first potentiometer RP1, second end and third are terminating the second diode D2 just
Pole；The cathode of second diode D2 connects the output end of third differential amplifier circuit, and connecting pin is adjusted to the electricity of power amplifier declines
Subtract device output attenuatoin voltage, controls the pad value of electrically controlled attenuator.When the level of third differential amplifier circuit output is less than second
When the voltage of diode D2 cathode, the evanescent voltage exported to electrically controlled attenuator is consistently equal to the electricity of the second diode D2 cathode
Pressure；When the level of third differential amplifier circuit output is greater than the voltage of the second diode D2 cathode, exported to electrically controlled attenuator
Evanescent voltage be equal to third differential amplifier circuit output level, and with the variation of third differential amplifier circuit output level and
Variation.
When power amplifier power-up, power-level detector can't be obtained from directional coupler, be equal to and be input to control electricity
Power-level detector size in road is zero, at this time the first differential amplifier circuit Non voltage output, due to the first preset reference level with
The difference of power-level detector is very big, and the output end of the second differential amplifier circuit has biggish output voltage at this time, can calculate this
The size of voltage, and by the sizableness of the second preset reference level being dimensioned to this voltage, to keep third poor
It is divided to the voltage swing of two input terminals of amplifying circuit of substantially equal, the voltage of third differential amplifier circuit output is approximately equal to zero, this
When to electrically controlled attenuator export evanescent voltage size be equal to the second diode D2 cathode voltage, can be by adjusting first
Potentiometer RP1 controls the size of the second diode D2 cathode voltage, and then controls electrically controlled attenuator when power amplifier is powered on
There is a biggish pad value, signal is decayed to proper level when making not having started closed-loop control response initially, avoids biography
System control circuit starts to control lag, leads to the problem of overshoot so as to cause output power.
During power starts from scratch foundation, power-level detector is gradually increased, the output electricity of the second differential amplifier circuit
It is flat to be gradually reduced, it is gradually increased with the difference of the second reference level, therefore the voltage value of third differential amplifier circuit output is gradually
Increase, it is defeated to electrically controlled attenuator when the voltage of third differential amplifier circuit output is greater than the voltage of the second diode D2 cathode
Evanescent voltage out is determined by the voltage that third differential amplifier circuit exports, and is increased, and control electrically controlled attenuator is corresponding
It is reversed to reduce pad value, until reaching the output power of demand.
When power continues to increase, and power-level detector is greater than the first preset reference level, the second differential amplifier circuit no-voltage
Output, the output voltage of the first differential amplifier circuit are gradually increased from zero, make the output voltage of third differential amplifier circuit gradually
Reduce, the evanescent voltage exported to electrically controlled attenuator reduces, and so that electrically controlled attenuator is increased pad value, to reduce power.
In this way, circuit is in a kind of working condition of dynamic equilibrium always in whole work process, power-level detector is made to begin
It is controlled in preset reference eventually, realizes automatic growth control, prevent output power from generating overshoot.
In a preferred embodiment of the invention, the first differential amplifier circuit includes the first operational amplifier IC1, first resistor
R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and first capacitor C1.
The electrode input end of first operational amplifier IC1 connect respectively first resistor R1 first end and second resistance R2
One end；First input end of the second end of first resistor R1 as the first differential amplifier circuit；The second termination of second resistance R2
Ground；The negative input of first operational amplifier IC1 connects the first end of 3rd resistor R3；The second end of 3rd resistor R3 is as
Second input terminal of one differential amplifier circuit；The first end of 4th resistance R4 is connect with the first end of first capacitor C1 is followed by first
The negative input of operational amplifier IC1, the second end of the 4th resistance R4 is connect with the second end of first capacitor C1 is followed by first
The output end of operational amplifier IC1；Second end, the second end of first capacitor C1 and the first operational amplifier of 4th resistance R4
Output end of the connecting pin of the output end of IC1 as the first differential amplifier circuit.
Analogously, in another preferred embodiment of the invention, the second differential amplifier circuit includes the second operation amplifier
Device IC2, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and the second capacitor C2.
The electrode input end of second operational amplifier IC2 connect respectively the 5th resistance R5 first end and the 6th resistance R6
One end；First input end of the second end of 5th resistance R5 as the second differential amplifier circuit；The second termination of 6th resistance R6
Ground；The negative input of second operational amplifier IC2 connects the first end of the 7th resistance R7；The second end of 7th resistance R7 is as
Second input terminal of two differential amplifier circuits；The first end of 8th resistance R8 connect with the first end of the second capacitor C2 and is followed by second
The negative input of operational amplifier IC2, the second end of the 8th resistance R8 connect with the second end of the second capacitor C2 and are followed by second
The output end of operational amplifier IC2；The second end and second operational amplifier of the second end of 8th resistance R8, the second capacitor C2
Output end of the connecting pin of the output end of IC2 as the second differential amplifier circuit.
First differential amplifier circuit and the second differential amplifier circuit output-parallel, the two structure is identical, and two inputs
End is all to connect power-level detector and the first preset reference level, and only connect port positive and negative anodes are just opposite.
In a further preferred embodiment, third differential amplifier circuit includes third operational amplifier IC3, the 9th resistance
R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12 and third capacitor C3.
The electrode input end of third operational amplifier IC3 connects the first end and the tenth resistance R10 of the 9th resistance R9 respectively
First end；First input end of the second end of 9th resistance R9 as third differential amplifier circuit；The second end of tenth resistance R10
Ground connection；The negative input of third operational amplifier IC3 connects the first end of eleventh resistor R11；The second of eleventh resistor R11
Hold the second input terminal as the first differential amplifier circuit；The first end of twelfth resistor R12 and the first end of third capacitor C3
Connection is followed by the negative input of third operational amplifier IC3, the second end of twelfth resistor R12 and the second of third capacitor C3
End connection is followed by the output end of third operational amplifier IC3；Second end, the second end of third capacitor C3 of twelfth resistor R12
Output end with the connecting pin of the output end of third operational amplifier IC3 as third differential amplifier circuit.
In above several preferred embodiments, first capacitor C1, the second capacitor C2, third capacitor C3 are for adjustment circuit
Speed control.
In another preferred embodiment, control circuit of the power amplifier without overshoot provided by the invention further includes second
Potentiometer RP2 and third potentiometer RP3.
The first termination supply voltage VCC of second potentiometer RP2, the connecting pin output first at second end and third end are default
Reference level connects the second input terminal of the first differential amplifier circuit and the first input end of the second differential amplifier circuit respectively；The
The connecting pin at the first termination supply voltage VCC of three potentiometer RP3, second end and third end exports the second preset reference level,
Connect the first input end of third difference channel.It can according to need adjustment by the second potentiometer RP2 and third potentiometer RP3
The size of one preset reference level and the second preset reference level.
Compared with use digital integrated electronic circuit realization power amplifier is without overshoot control, control provided in an embodiment of the present invention
Circuit of the power amplifier processed without overshoot controls power amplifier output power without overshoot, Bu Huishou in a manner of analog circuit
The limitation of AD, DA Process Precision can be adapted for the biggish power amplifier of flat gain in broadband, property difference.
In conclusion a kind of control method and circuit of the power amplifier without overshoot provided by the invention, with the prior art
It compares, has the advantages that：
1, when power amplifier is powered on, a biggish pad value is set to electrically controlled attenuator, makes not having started initially and close
Signal is decayed to proper level when ring control response, avoid traditional analog control circuit start to control lag cause overshoot
Problem.
2, evanescent voltage is corrected according to the power-level detector of directional coupler output：When power, which is started from scratch, to be established, gradually
Increase evanescent voltage, then respective opposed reduces decaying to corresponding electrically controlled attenuator, until reaching the output power of demand；When
When power continues to increase, it is gradually reduced evanescent voltage, makes electricity that controller be adjusted to increase pad value, so that power-level detector be made to be controlled always
For system in preset reference, circuit is in a kind of working condition of dynamic equilibrium always, realizes automatic growth control, prevents from exporting
Power generates overshoot.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of control method of the power amplifier without overshoot, which is characterized in that the method includes：
When power amplifier power-up, an initial evanescent voltage is added to the electrically controlled attenuator of the power amplifier,
To which a biggish pad value be arranged to the electrically controlled attenuator；
When the power-level detector that the directional coupler of the power amplifier exports is when zero and first change between reference level, protect
The size for holding the evanescent voltage of electrically controlled attenuator is constant；
When the power-level detector changes between first reference level and the second reference level, electrically controlled attenuator is controlled
Evanescent voltage increases with the power-level detector and is increased, reduces with the power-level detector and reduce；
When the power-level detector changes between second reference level and third reference level, electrically controlled attenuator is controlled
Evanescent voltage increases with the power-level detector and is reduced, reduces with the power-level detector and increase；
When the power-level detector is greater than the third reference level, the size of the evanescent voltage of electrically controlled attenuator is kept to be equal to just
The evanescent voltage of beginning is constant；
Wherein, when the evanescent voltage of electrically controlled attenuator increases, the pad value of the electrically controlled attenuator reduces；Work as electrically controlled attenuator
Evanescent voltage when reducing, the pad value of the electrically controlled attenuator increases.
2. a kind of control circuit of the power amplifier without overshoot, which is characterized in that the control electricity of the power amplifier without overshoot
Road includes the first differential amplifier circuit, the second differential amplifier circuit, third differential amplifier circuit, the first potentiometer, the one or two pole
Pipe and the second diode；
The first input end of first differential amplifier circuit connects the detection electricity of the directional coupler output of the power amplifier
It is flat, second input the first preset reference level of termination；
The first input end of second differential amplifier circuit connects the first preset reference level, and the second input terminates the power and puts
The power-level detector of the directional coupler output of big device；
The output of second differential amplifier circuit terminates the anode of the first diode；The cathode of the first diode with
After the output end connection of first differential amplifier circuit, the second input terminal of the third differential amplifier circuit is connect；Described
The first input end of three differential amplifier circuits connects the second preset reference level；
First termination supply voltage of first potentiometer, second end and third terminate the anode of second diode；
The cathode of second diode connects the output end of the third differential amplifier circuit, the cathode of second diode and
Electrically controlled attenuator output attenuatoin voltage from the connecting pin of the output end of the third differential amplifier circuit to the power amplifier,
Control the pad value of the electrically controlled attenuator.
3. control circuit of the power amplifier without overshoot as claimed in claim 2, which is characterized in that first differential amplification
Circuit includes the first operational amplifier, first resistor, second resistance, 3rd resistor, the 4th resistance and first capacitor；
The electrode input end of first operational amplifier connects the first end and the second resistance of the first resistor respectively
First end；First input end of the second end of the first resistor as first differential amplifier circuit；The second resistance
Second end ground connection；
The negative input of first operational amplifier connects the first end of the 3rd resistor；The second end of the 3rd resistor
The second input terminal as first differential amplifier circuit；
The first end of 4th resistance is connect with the first end of the first capacitor is followed by the negative of first operational amplifier
Pole input terminal, the second end of the 4th resistance is connect with the second end of the first capacitor is followed by first operational amplifier
Output end；
The company of the output end of the second end of 4th resistance, the second end of the first capacitor and first operational amplifier
Connect the output end held as first differential amplifier circuit.
4. control circuit of the power amplifier without overshoot as claimed in claim 3, which is characterized in that second differential amplification
Circuit includes second operational amplifier, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and the second capacitor；
The electrode input end of the second operational amplifier connect respectively the 5th resistance first end and the 6th resistance first
End；First input end of the second end of 5th resistance as second differential amplifier circuit；The of 6th resistance
Two ends ground connection；
The negative input of the second operational amplifier connects the first end of the 7th resistance；The second end of 7th resistance
The second input terminal as second differential amplifier circuit；
The first end of 8th resistance is connect with the first end of second capacitor is followed by the negative of the second operational amplifier
Pole input terminal, the second end of the 8th resistance is connect with the second end of second capacitor is followed by the second operational amplifier
Output end；
The company of the output end of the second end of 8th resistance, the second end of second capacitor and the second operational amplifier
Connect the output end held as second differential amplifier circuit.
5. control circuit of the power amplifier without overshoot as claimed in claim 4, which is characterized in that the third differential amplification
Circuit includes third operational amplifier, the 9th resistance, the tenth resistance, eleventh resistor, twelfth resistor and third capacitor；
The electrode input end of the third operational amplifier connect respectively the 9th resistance first end and the tenth resistance first
End；First input end of the second end of 9th resistance as the third differential amplifier circuit；The of tenth resistance
Two ends ground connection；
The negative input of the third operational amplifier connects the first end of the eleventh resistor；The of the eleventh resistor
Second input terminal of two ends as first differential amplifier circuit；
The first end of the twelfth resistor connect with the first end of the third capacitor and is followed by the third operational amplifier
Negative input, the second end of the twelfth resistor is connect with the second end of the third capacitor to be followed by the third operation and puts
The output end of big device；
The output end of the second end of the twelfth resistor, the second end of the third capacitor and the third operational amplifier
Output end of the connecting pin as the third differential amplifier circuit.
6. such as described in any item control circuits of the power amplifier without overshoot of claim 2-5, which is characterized in that the control
Circuit of the power amplifier without overshoot further includes the second potentiometer and third potentiometer；
The connecting pin at the first termination supply voltage of second potentiometer, second end and third end exports the first preset reference electricity
It is flat, the second end of second potentiometer and the connection at third end terminate first differential amplifier circuit the second input terminal and
The first input end of second differential amplifier circuit；
The connecting pin at the first termination supply voltage of the third potentiometer, second end and third end exports the second preset reference electricity
It is flat, connect the first input end of the third differential amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338081.5A CN106059522B (en) | 2016-05-19 | 2016-05-19 | A kind of control method and circuit of the power amplifier without overshoot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338081.5A CN106059522B (en) | 2016-05-19 | 2016-05-19 | A kind of control method and circuit of the power amplifier without overshoot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106059522A CN106059522A (en) | 2016-10-26 |
| CN106059522B true CN106059522B (en) | 2018-11-27 |
Family
ID=57176465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610338081.5A Active CN106059522B (en) | 2016-05-19 | 2016-05-19 | A kind of control method and circuit of the power amplifier without overshoot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106059522B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108768311B (en) * | 2018-07-09 | 2023-08-25 | 佛山科学技术学院 | Nonlinear regulator and dead zone circuit thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296821A (en) * | 1993-05-03 | 1994-03-22 | Motorola, Inc. | Method and apparatus for controlling transient responses in a power amplifier |
| CN101192859A (en) * | 2006-11-23 | 2008-06-04 | 武汉虹信通信技术有限责任公司 | Method for automatic level control of TD-SCDMA power amplifier |
| CN101977022A (en) * | 2010-09-03 | 2011-02-16 | 中兴通讯股份有限公司 | Complementary-multiplicative power compensation method, device and communication equipment |
| CN103312276A (en) * | 2013-06-18 | 2013-09-18 | 三维通信股份有限公司 | Power overshoot protection circuit for digital television power amplifier |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150194936A1 (en) * | 2014-01-09 | 2015-07-09 | Qualcomm Incorporated | Power amplifier envelope tracking |
-
2016
- 2016-05-19 CN CN201610338081.5A patent/CN106059522B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5296821A (en) * | 1993-05-03 | 1994-03-22 | Motorola, Inc. | Method and apparatus for controlling transient responses in a power amplifier |
| CN101192859A (en) * | 2006-11-23 | 2008-06-04 | 武汉虹信通信技术有限责任公司 | Method for automatic level control of TD-SCDMA power amplifier |
| CN101977022A (en) * | 2010-09-03 | 2011-02-16 | 中兴通讯股份有限公司 | Complementary-multiplicative power compensation method, device and communication equipment |
| CN103312276A (en) * | 2013-06-18 | 2013-09-18 | 三维通信股份有限公司 | Power overshoot protection circuit for digital television power amplifier |
Non-Patent Citations (2)
| Title |
|---|
| Development of a Wideband Highly Efficient GaN Vmcd VHF/UHF Power Amplifier;Lin等;《Progress in Electromagnetics Research C》;20111231;第135-147页 * |
| 通信对抗系统功率放大器的智能自适应控制研究;邹炜等;《中国电子科学研究院学报》;20120630;第7卷(第3期);第284-288页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106059522A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4562525B2 (en) | Maintaining RF amplifier linearity | |
| CN101702618A (en) | Gain control of radio frequency linear power amplifier | |
| KR20150089910A (en) | Power Amplifier | |
| CN106130579B (en) | The automatic controlling method for gain and device of millimeter-wave transmitter | |
| CN101977022B (en) | Complementary-multiplicative power compensation method, device and communication equipment | |
| CN106059522B (en) | A kind of control method and circuit of the power amplifier without overshoot | |
| CN109861661A (en) | A kind of trans-impedance amplifier and trans-impedance amplifier circuit | |
| CN208189975U (en) | A kind of high current high frequency modulated laser Constant-power drive circuit | |
| TWI342109B (en) | Dc offset calibration apparatus and method | |
| CN206878780U (en) | Audio power amplifying circuit | |
| CN104836536B (en) | A kind of power amplifier structure based on negative-feedback | |
| CN109450399A (en) | A kind of electricity tune attenuator circuit | |
| JP2004040795A (en) | Bias control for hbt power amplifier | |
| CN205142063U (en) | Motor constant speed control circuit and motor | |
| CN209131750U (en) | A kind of super low-power consumption gas meter, flow meter | |
| CN208871800U (en) | A kind of building intellectualization ventilation equipment circuit for signal conditioning | |
| CN206948276U (en) | A kind of automaton for Audio Signal Processing | |
| CN107528558A (en) | The automatic power control circuit of microwave amplifier | |
| CN201063634Y (en) | Light receiver | |
| CN106788300B (en) | System for automatic constant differential signal amplitude in high-speed serial interface | |
| CN213367730U (en) | Power amplifier electronic control biasing device with automatic compensation function | |
| CN109765955A (en) | A kind of Voltage Feedback control circuit | |
| CN209314036U (en) | A kind of switching on and shutting down muting control circuit in audio frequency power amplifier | |
| CN208522717U (en) | A kind of positioning device saving function with data | |
| CN206195731U (en) | High dynamic range's amplifier circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |