CN108055010A - A kind of power amplifier mismatch guard loop of quick dynamic self-adapting and guard method - Google Patents
A kind of power amplifier mismatch guard loop of quick dynamic self-adapting and guard method Download PDFInfo
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- CN108055010A CN108055010A CN201711282426.0A CN201711282426A CN108055010A CN 108055010 A CN108055010 A CN 108055010A CN 201711282426 A CN201711282426 A CN 201711282426A CN 108055010 A CN108055010 A CN 108055010A
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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
- H03F1/52—Circuit arrangements for protecting such 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
- H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/441—Protection of an amplifier being implemented by clamping means
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
Abstract
The present invention proposes a kind of power amplifier mismatch guard loop of quick dynamic self-adapting, including：Voltage-controlled attenuator, driving amplifier, power amplifier, dual directional coupler and dynamic self-adapting mismatch protection module；Dynamic self-adapting mismatch protection module includes power detection module, power conversion module, power display module, self-adaptive processing module and real-time monitoring modular；Self-adaptive processing module carries out adaptive computing according to power amplifier port match situation, completes the adjusting of voltage-controlled attenuator and power amplifier bias voltage；Real-time monitoring modular realizes the reading of power amplifier port match state by way of monitoring in real time, once there is the situation that port mismatch transfinites, makes counter-measure.The present invention substitutes original technology based on devices at full hardware circuit using the software control mismatch guard loop based on highly integrated digital circuit, greatly reduces circuit volume, improves integrated level, is conducive to the miniaturization of power amplifier.
Description
Technical field
The present invention relates to power amplifier field, the power amplifier mismatch of more particularly to a kind of quick dynamic self-adapting is protected
Retaining ring road further relates to a kind of power amplifier mismatch guard method of quick dynamic self-adapting.
Background technology
With the continuous development of the application fields such as radar, communication, electronic countermeasure and aerospace, to power amplifier properties
Increasingly higher demands are also proposed, higher power output can be had by not requiring nothing more than power amplifier, and be required
Mismatch defencive function.Due to the high current working condition and non-linear output characteristic of power amplifier so that it is to use environment
It is it is required that quite harsh.It works under given conditions, power amplifier total power dissipation is fixed, and an energy part for dissipation is converted to radio frequency
Power output, a part are converted into thermal energy.Under power amplifier mismatch Conditions, reflection power and the operating current increase of power amplifier, more
Power be converted into thermal energy, cause power tube temperature raise, when temperature be more than junction temperature when, power tube will be caused to puncture, if
Mismatch is serious, in some instances it may even be possible to cause system failure, operational failure.Therefore, the power amplifier mismatch protection of high efficient and reliable is designed
Loop, carries out the port protection of amplifier output channel, is necessary in practical applications.
At present, many power amplifier products do not design port mismatch defencive function, small part band on domestic and international market
There is the amplifier product of this function, be based on traditional closed loop feedback control technology, the operation principle of the technology is will to reflect work(
The detecting circuit of rate signal is compared with reference voltage, when detecting circuit exceeds reference voltage, then automatically cuts off radio frequency letter
Number, and alarm signal is sent, so as to fulfill port mismatch defencive function.Simulation is used based on traditional closed loop feedback control technology
Circuit builds mismatch guard loop, and functional block diagram is as shown in Figure 1, the mismatch guard loop mainly includes RF switch, driving
Amplifier, power amplifier, directional coupler, wave detector, mismatch guard loop and alarm indication circuit etc..Wherein, radio frequency is believed
The amplification that power signal is completed after RF switch, driving amplifier and power amplifier number is passed sequentially through, and by orientation coupling
The output terminal output of clutch, while the reflected power signal of the reverse coupled end output of directional coupler enters wave detector, power
Signal is converted into analog voltage signal, which enters the voltage comparator of mismatch protection circuit, with reference voltage into
Row compares, and comparative result is exported, and cuts off RF switch, while carries out port Mismatch alarm by alarm indication circuit, from
And realize amplifier port mismatch defencive function.The technical principle is simple, and the response time is short, can in the case of the mismatch of port
Effective guard amplifier and load equipment, but due to analog circuit integrated level itself is not high and intelligent low limitation because
Element causes it that can not meet the highly integrated and intelligentized growth requirement of Modern Electronic measuring apparatus.
Traditional port mismatch protection technique is to build mismatch guard loop using analog circuit, shortcoming mainly include with
Descend some：
(1) circuit level is not high, and function is single, is unfavorable for Integrated Simulation and program control operation, greatly limits amplifier
Miniaturization and intelligence；
(2) since circuit function itself is limited, after in port, mismatch condition is improved, amplifier can not realize self- recoverage
Operation, need to restart amplifier, could work normally, greatly reduce its dependable with function；
(3) particularity due to power amplifier in itself, the uniformity for causing its mismatch guard loop is poor, for difference
Model amplifier, it usually needs different reference voltages is set, and is needed by debugging repeatedly, its optimum efficiency of competence exertion,
Production cost is higher.
The content of the invention
To solve above-mentioned problems of the prior art, the present invention proposes a kind of power of quick dynamic self-adapting and puts
Big device mismatch guard loop and guard method.
The technical proposal of the invention is realized in this way：
A kind of power amplifier mismatch guard loop of quick dynamic self-adapting, including：
Voltage-controlled attenuator, driving amplifier, power amplifier, dual directional coupler and dynamic self-adapting mismatch protection mould
Block；
Voltage-controlled attenuator is the adjustable attenuator that gain is controlled by analog voltage, is decayed to input signal；
Driving amplifier carries out gain amplification to the microwave and millimeter wave signal that voltage-controlled attenuator exports；
Power amplifier is used to carry out power amplification and synthesis to the microwave and millimeter wave signal of driving amplifier output, first profit
Input signal work(is divided into signal of the multichannel constant amplitude with phase with power splitter, after then carrying out power amplification per signal all the way, via
It is exported after synthesizer synthesis；
Dual directional coupler includes signal output part and coupled output, and wherein most signal is defeated via signal output part
Go out, coupled output exports forward power coupled signal and reflection power coupled signal respectively；
Dynamic self-adapting mismatch protection module includes power detection module, power conversion module, power display module, adaptive
Answer processing module and real-time monitoring modular；Wherein, power detection diode is integrated in power detection module, amphiorentation is coupled
The forward power coupled signal and reflection power coupled signal of device output are converted to analog voltage signal；Power conversion module passes through
It calculates, analog voltage signal is converted into performance number；Power display module is by the forward power value of power amplifier and reflects work(
Rate value is shown on liquid crystal display；Self-adaptive processing module carries out adaptive meet the tendency of according to power amplifier port match situation
It calculates, completes the adjusting of voltage-controlled attenuator and power amplifier bias voltage；Real-time monitoring modular by way of monitoring in real time come
Realize the reading of power amplifier port match state.
Optionally, the dynamic self-adapting mismatch protection module carries out adaptive according to power amplifier port match situation
It answers computing, and according to operation result and the default decision condition of program, is set automatically, in severe mismatch, directly
Connect the bias voltage of rupturing duty amplifier, and in the case of slight mismatch, then can automatic power adjustment amplifier it is voltage-controlled
Attenuator attenuation, so as to reduce reflection power value.
Optionally, the workflow of the dynamic self-adapting mismatch protection module includes：
Step (1), power information are read：Input radio frequency signal after power amplifier start, carries out power information first
It reads, and according to the detection characteristic of detector diode, detecting circuit is converted into performance number, so as to obtain the defeated of power amplifier
Go out signal power Ps and reflection signal power Pr；
Step (2), standing-wave ratio calculate：Dynamic self-adapting mismatch protection module is carried out according to following equation (1), (2), (3)
It calculates, obtains port standing-wave ratio VSWR：
Return loss：
Reflectance factor：
Standing-wave ratio：
Step (3), standing-wave ratio judge：
If VSWR ＞ α, α are the default standing-wave ratio tolerance value of program, then illustrate that power amplifier port is in severe mismatch
State is not suitable for working on, and dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage；
If VSWR ＜ α, illustrate that power amplifier port is in slight mismatch state, then into next step；
Step (4), reflection power value judge：
If Pr ＞ β, β are the default reflection power tolerance value of program, then illustrate that amplifier reflection power is excessive, work on
There are risks, and therefore, dynamic self-adapting mismatch protection module will calculate reflection power difference first：
Δ P=Pr- β (4)
Then, according to the correspondence of the voltage-controlled attenuator of advance typing attenuation-voltage, its voltage value of adjust automatically,
So that the attenuation of voltage-controlled attenuator increases Δ P, the voltage-controlled attenuator attenuation and reflection power value of power amplifier are linear
Correspondence, the reflected power signal of power amplifier accordingly reduce Δ P；
If Pr ＜ β illustrate that power amplifier reflection power is normal, without being adjusted, standing state is maintained.
Optionally, if VSWR ＞ α, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage, together
When send alarm signal, user is prompted to check power amplifier and load equipment, improves port match situation, is confirmed in user
After amplifier and load equipment are working properly, the mode manually set opens the bias voltage of power amplifier, and returns
Step (1) is returned, re-reads power amplifier information.
Optionally, standing-wave ratio judges that priority judges higher than reflection power value.
Based on above-mentioned guard loop, the invention also provides a kind of power amplifier mismatch protections of quick dynamic self-adapting
Method comprises the following steps：
Step (1), power information are read：Input radio frequency signal after power amplifier start, carries out power information first
It reads, and according to the detection characteristic of detector diode, detecting circuit is converted into performance number, so as to obtain the defeated of power amplifier
Go out signal power Ps and reflection signal power Pr；
Step (2), standing-wave ratio calculate：Dynamic self-adapting mismatch protection module is carried out according to following equation (1), (2), (3)
It calculates, obtains port standing-wave ratio VSWR：
Return loss：
Reflectance factor：
Standing-wave ratio：
Step (3), standing-wave ratio judge：
If VSWR ＞ α, α are the default standing-wave ratio tolerance value of program, then illustrate that power amplifier port is in severe mismatch
State is not suitable for working on, and dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage；
If VSWR ＜ α, illustrate that amplifier port is in slight mismatch state, then into next step；
Step (4), reflection power value judge：
If Pr ＞ β, β are the default reflection power tolerance value of program, then illustrate that amplifier reflection power is excessive, work on
There are risks, and therefore, dynamic self-adapting mismatch protection module will calculate reflection power difference first：
Δ P=Pr- β (4)
Then, according to the correspondence of the voltage-controlled attenuator of advance typing attenuation-voltage, its voltage value of adjust automatically,
So that the attenuation of voltage-controlled attenuator increases Δ P, the voltage-controlled attenuator attenuation and reflection power value of power amplifier are linear
Correspondence, the reflected power signal of power amplifier accordingly reduce Δ P；
If Pr ＜ β illustrate that power amplifier reflection power is normal, without being adjusted, standing state is maintained.
Optionally, if VSWR ＞ α, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage, together
When send alarm signal, user is prompted to check power amplifier and load equipment, improves port match situation, is confirmed in user
After amplifier and load equipment are working properly, the mode manually set opens the bias voltage of power amplifier, and returns
Step (1) is returned, re-reads booster output information.
Optionally, standing-wave ratio judges that priority judges higher than reflection power value.
The beneficial effects of the invention are as follows：
(1) it is original based on devices at full hardware electricity using the software control mismatch guard loop substitution based on highly integrated digital circuit
The technology on road greatly reduces circuit volume, improves integrated level, is conducive to the miniaturization of power amplifier；
(2) intelligentized mismatch guard method is utilized, port mismatch condition is divided into two kinds of severe mismatch and slight mismatch
Situation, and correct counter-measure can be taken according to mismatch condition, especially in port slight mismatch, amplifier can lead to
It crosses adaptive computing to be automatically adjusted, while ensures not influencing the normal work of power amplifier and system；
(3) dynamic self-adapting mismatch protection module can not only realize mismatch defencive function, and can utilize a variety of connect
Mouth is mutually compatible with the remote control function of power amplifier, you can with real-time read port performance number, standing wave under programmed state
Than with the information such as alarm signal, and can choose whether to open mismatch defencive function according to demand, so as to enhance power amplification
The practicability of device；
(4) there is stronger versatility, without being debugged, can be adapted for the amplifier product of different model, and energy
The open and close of function are enough easily realized by software interface and judge the setting of tolerance value, practicality easy to operate.
Description of the drawings
It 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 attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the functional block diagram of existing mismatch guard loop；
Fig. 2 is the power amplifier mismatch guard loop functional block diagram of the quick dynamic self-adapting of the present invention；
Fig. 3 is the control block diagram of the power amplifier mismatch protection module of the quick dynamic self-adapting of the present invention；
Fig. 4 is the power amplifier mismatch guard loop work flow diagram of the quick dynamic self-adapting of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
It is each under the complex environment of the different applications such as radar, communication, electronic countermeasure and aerospace field in order to tackle
Kind demand also proposed higher requirement to the stability and reliability of power amplifier work, this just needs power amplifier
With mismatch defencive function.When port mismatch occurs in power amplifier, its working condition can be not only influenced, but also is possible to
Clutter interference is introduced in system, if mismatch is serious, in some instances it may even be possible to burn device, cause system failure, operational failure.
The present invention proposes power amplifier mismatch guard loop and the guard method of a kind of quick dynamic self-adapting, the ring
Road and method not only have the characteristics that high integration and intelligentized, but also are put for the microwave and millimeter wave solid state power of different model
Big device is respectively provided with general applicability.
As shown in Fig. 2, the power amplifier mismatch guard loop of the quick dynamic self-adapting of the present invention includes：Voltage-controlled attenuation
Device 1, driving amplifier 2, power amplifier 3, dual directional coupler 4 and dynamic self-adapting mismatch protection module 5.
Wherein, voltage-controlled attenuator 1 is the adjustable attenuator that gain is controlled by analog voltage；Driving amplifier 2 for pair
Microwave and millimeter wave signal carries out gain amplification；Power amplifier 3 is used to carry out power amplification and synthesis to microwave and millimeter wave signal,
Input signal work(is divided into signal of the multichannel constant amplitude with phase first with power splitter, after then carrying out power amplification per signal all the way,
It is exported after being synthesized via synthesizer；Dual directional coupler 4 includes signal output part and coupled output, wherein most signal warp
It is exported by signal output part, coupled output exports forward power coupled signal and reflection power coupled signal respectively；Such as Fig. 3 institutes
Show, dynamic self-adapting mismatch protection module 5 mainly include power detection module, power conversion module, power display module, from
Adapt to processing module and real-time monitoring modular.Wherein, power detection diode has been integrated into mismatch protection module by the present invention,
Power detection module 51 is formed, the forward power coupled signal of dual directional coupler output and reflection power coupled signal are converted
For analog voltage signal, the integrated level of circuit is substantially increased；Power conversion module 52 is turned analog voltage signal by calculating
It is changed to performance number；Power display module 53 shows the forward power value of amplifier and reflection power value on liquid crystal display；
Self-adaptive processing module 54 carries out adaptive computing according to power amplifier port match situation, completes voltage-controlled attenuator and amplification
The functions such as the adjusting of device bias voltage；Real-time monitoring modular 55 realizes power amplifier port by way of monitoring in real time
Reading with state.Once there is the situation that port mismatch transfinites, dynamic self-adapting mismatch protection module then can be when extremely short
Between in (nanosecond rank), make correct counter-measure.
Dynamic self-adapting mismatch protection module 5 is except possessing above-mentioned function, and as shown in Figure 2, dynamic self-adapting mismatch is protected
Protecting module 5 also has the multiple interfaces such as network, GPIB, USB and VGA, can be mutually compatible with the programmable function of amplifier.
The power amplifier mismatch guard loop with quick dynamic self-adapting that the present invention designs can be put according to power
Big device ground port match condition, carries out intelligentized adaptive computing, and sentences according to operation result and software program are default
Fixed condition is set automatically, in severe mismatch, can direct rupturing duty amplifier bias voltage, and slight
In the case of mismatch, then can adjust automatically amplifier voltage-controlled attenuator attenuation, so as to reduce reflection power value, effectively protecting
While protecting amplifier and load equipment against damages, additionally it is possible to ensure the normal work of amplifier and whole system.
The present invention dynamic self-adapting mismatch protection module work flow diagram as shown in figure 4, whole process include twice
Tolerance value judges, is respectively that standing-wave ratio judges to judge with reflection power value, and standing-wave ratio judges that priority is higher than reflection power value
Judge, key step is specifically expressed as follows：
Step (1), power information are read：
Input radio frequency signal after amplifier start, carries out the reading of power information first, and according to the inspection of detector diode
Detecting circuit is converted to performance number by wave property, so as to obtain the output signal power Ps of amplifier and reflection signal power Pr；
Step (2), standing-wave ratio calculate：
Dynamic self-adapting mismatch protection module 5 is calculated according to following equation, obtains port standing-wave ratio VSWR：
Return loss：
Reflectance factor：
Standing-wave ratio：
Step (3), standing-wave ratio judge：
If VSWR ＞ α (the default standing-wave ratio tolerance value of program), illustrate that power amplifier port is in severe mismatch shape
State is not suitable for working on, and therefore, dynamic self-adapting mismatch protection module will automatically cut off power amplifier bias voltage, together
When send alarm signal, user is prompted to check power amplifier and load equipment, improves port match situation, is confirmed in user
After amplifier and load equipment are working properly, the mode that can manually set opens the bias voltage of power amplifier, and
Return to step (1), re-reads booster output information；
If VSWR ＜ α, illustrate that amplifier port is in slight mismatch state, then automatically into next step.
Step (4), reflection power value judge：
If Pr ＞ β (the default reflection power tolerance value of program), illustrate that amplifier reflection power is excessive, work on and deposit
In risk, therefore, dynamic self-adapting mismatch protection module will calculate reflection power difference first：
Δ P=Pr- β (4)
Then, according to the correspondence of the voltage-controlled attenuator of advance typing attenuation-voltage, its voltage value of adjust automatically,
So that the attenuation of voltage-controlled attenuator increases Δ P, it is considered that, voltage-controlled attenuator attenuation and the reflection power value of amplifier are
Linear correspondence, therefore, the reflected power signal of amplifier accordingly reduces Δ P.
Above-mentioned self-regulating process can be completed within the extremely short time (nanosecond rank), and coordinate dynamic self-adapting
Power information after adjustment can be re-started reading and processing, so as to ensure by the real time monitoring function of mismatch protection module
The reflection power of amplifier is always within tolerance value.
If Pr ＜ β illustrate that amplifier reflection power is normal, without being adjusted, standing state is maintained.
The mismatch protective program of compiling is write dynamic self-adapting mismatch protection module by the present invention, and with power amplifier,
Voltage-controlled attenuator and dual directional coupler composition mismatch guard loop, by the attenuation and work(that automatically adjust voltage-controlled attenuator
The bias voltage of rate amplifier chip realizes the mismatch defencive function of power amplifier.
The present invention substitutes traditional analog circuit using the digital circuit with dynamic self-adapting mismatch protection module, builds
Mismatch guard loop not only substantially increases the integrated level of circuit, but also can give full play to the powerful computing of central processing unit
Ability, and simple, efficient algorithm is selected to compile mismatch protection software, therefore, mismatch guard loop has quick response
Feature, the response time is in nanosecond rank.
In order to ensure port mismatch defencive function it is real-time effectively, the present invention devises special dynamic self-adapting mismatch and protects
Module is protected, the power information of simultaneously display amplifier can be read in real time by the module, once there are the feelings that port mismatch transfinites
Condition then can make correct counter-measure within the extremely short time, so as to play port mismatch defencive function to greatest extent.
According to port mismatch, the mismatch guard loop that the present invention designs can carry out intelligentized automatic setting, and
Attenuation-voltage correspondence according to voltage-controlled attenuator has compiled the mismatch protection software with adaptive operational capability,
In the case of slight mismatch, fast and accurately port reflection power can be set to below tolerance value using the software, and it is whole
A process does not influence the normal work of amplifier and system.In addition, the mismatch guard loop can also pass through multiple interfaces form
It is mutually compatible with the programmable function of power amplifier, it, can be convenient using general switching software after being connected with smart machines such as computers
Power information, port standing-wave ratio and alarm signal of reading and display power amplifier etc., so as to substantially increase power amplification
The intelligence of device and versatility.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of power amplifier mismatch guard loop of quick dynamic self-adapting, which is characterized in that including：
Voltage-controlled attenuator, driving amplifier, power amplifier, dual directional coupler and dynamic self-adapting mismatch protection module；
Voltage-controlled attenuator is the adjustable attenuator that gain is controlled by analog voltage, is decayed to input signal；
Driving amplifier carries out gain amplification to the microwave and millimeter wave signal that voltage-controlled attenuator exports；
Power amplifier is used to carry out power amplification and synthesis to the microwave and millimeter wave signal of driving amplifier output, first with work(
Divide device that input signal work(is divided into signal of the multichannel constant amplitude with phase, after then carrying out power amplification per signal all the way, via synthesis
It is exported after device synthesis；
Dual directional coupler includes signal output part and coupled output, and wherein most signal is exported via signal output part,
Coupled output exports forward power coupled signal and reflection power coupled signal respectively；
Dynamic self-adapting mismatch protection module includes power detection module, power conversion module, power display module, adaptive place
Manage module and real-time monitoring modular；Wherein, power detection diode is integrated in power detection module, dual directional coupler is defeated
The forward power coupled signal and reflection power coupled signal gone out is converted to analog voltage signal；Power conversion module passes through meter
It calculates, analog voltage signal is converted into performance number；Power display module is by the forward power value and reflection power of power amplifier
Value is shown on liquid crystal display；Self-adaptive processing module carries out adaptive computing according to power amplifier port match situation,
Complete the adjusting of voltage-controlled attenuator and power amplifier bias voltage；Real-time monitoring modular is realized by way of monitoring in real time
The reading of power amplifier port match state.
2. a kind of power amplifier mismatch guard loop of quick dynamic self-adapting as described in claim 1, which is characterized in that
The dynamic self-adapting mismatch protection module carries out adaptive computing according to power amplifier port match situation, and according to fortune
Result and the default decision condition of program are calculated, is set automatically, in severe mismatch, direct rupturing duty amplifier
Bias voltage, and in the case of slight mismatch, then can automatic power adjustment amplifier voltage-controlled attenuator attenuation, so as to
Reduce reflection power value.
3. a kind of power amplifier mismatch guard loop of quick dynamic self-adapting as claimed in claim 2, which is characterized in that
The workflow of the dynamic self-adapting mismatch protection module includes：
Step (1), power information are read：Input radio frequency signal after power amplifier start, carries out the reading of power information first,
And according to the detection characteristic of detector diode, detecting circuit is converted into performance number, so as to obtain the output of power amplifier letter
Number power P s and reflection signal power Pr；
Step (2), standing-wave ratio calculate：Dynamic self-adapting mismatch protection module is calculated according to following equation (1), (2), (3),
Obtain port standing-wave ratio VSWR：
Return loss：
Reflectance factor：
Standing-wave ratio：
Step (3), standing-wave ratio judge：
If VSWR ＞ α, α are the default standing-wave ratio tolerance value of program, then illustrate that power amplifier port is in severe mismatch state,
Be not suitable for working on, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage；
If VSWR ＜ α, illustrate that power amplifier port is in slight mismatch state, then into next step；
Step (4), reflection power value judge：
If Pr ＞ β, β are the default reflection power tolerance value of program, then illustrate that amplifier reflection power is excessive, work on presence
Risk, therefore, dynamic self-adapting mismatch protection module will calculate reflection power difference first：
Δ P=Pr- β (4)
Then, according to the correspondence of the voltage-controlled attenuator of advance typing attenuation-voltage, its voltage value of adjust automatically so that
The attenuation of voltage-controlled attenuator increases Δ P, and the voltage-controlled attenuator attenuation and reflection power value of power amplifier are linearly corresponding
Relation, the reflected power signal of power amplifier accordingly reduce Δ P；
If Pr ＜ β illustrate that power amplifier reflection power is normal, without being adjusted, standing state is maintained.
4. a kind of power amplifier mismatch guard loop of quick dynamic self-adapting as claimed in claim 3, which is characterized in that
If VSWR ＞ α, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage, is simultaneously emitted by alarm signal,
User is prompted to check power amplifier and load equipment, improves port match situation, confirms amplifier and load in user
After equipment is working properly, the mode manually set opens the bias voltage of power amplifier, and return to step (1), again
Readout power booster output information.
5. a kind of power amplifier mismatch guard loop of quick dynamic self-adapting as claimed in claim 3, which is characterized in that
Standing-wave ratio judges that priority judges higher than reflection power value.
6. a kind of power amplifier mismatch protection side of the quick dynamic self-adapting based on the guard loop of claim 1 or 2
Method, which is characterized in that comprise the following steps：
Step (1), power information are read：Input radio frequency signal after power amplifier start, carries out the reading of power information first,
And according to the detection characteristic of detector diode, detecting circuit is converted into performance number, so as to obtain the output of power amplifier letter
Number power P s and reflection signal power Pr；
Step (2), standing-wave ratio calculate：Dynamic self-adapting mismatch protection module is calculated according to following equation (1), (2), (3),
Obtain port standing-wave ratio VSWR：
Return loss：
Reflectance factor：
Standing-wave ratio：
Step (3), standing-wave ratio judge：
If VSWR ＞ α, α are the default standing-wave ratio tolerance value of program, then illustrate that power amplifier port is in severe mismatch state,
Be not suitable for working on, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage；
If VSWR ＜ α, illustrate that amplifier port is in slight mismatch state, then into next step；
Step (4), reflection power value judge：
If Pr ＞ β, β are the default reflection power tolerance value of program, then illustrate that amplifier reflection power is excessive, work on presence
Risk, therefore, dynamic self-adapting mismatch protection module will calculate reflection power difference first：
Δ P=Pr- β (4)
Then, according to the correspondence of the voltage-controlled attenuator of advance typing attenuation-voltage, its voltage value of adjust automatically so that
The attenuation of voltage-controlled attenuator increases Δ P, and the voltage-controlled attenuator attenuation and reflection power value of power amplifier are linearly corresponding
Relation, the reflected power signal of power amplifier accordingly reduce Δ P；
If Pr ＜ β illustrate that power amplifier reflection power is normal, without being adjusted, standing state is maintained.
7. a kind of power amplifier mismatch guard method of quick dynamic self-adapting as claimed in claim 6, which is characterized in that
If VSWR ＞ α, dynamic self-adapting mismatch protection module automatically cuts off power amplifier bias voltage, is simultaneously emitted by alarm signal,
User is prompted to check power amplifier and load equipment, improves port match situation, confirms amplifier and load in user
After equipment is working properly, the mode manually set opens the bias voltage of power amplifier, and return to step (1), again
Read-out amplifier power information.
8. a kind of power amplifier mismatch guard method of quick dynamic self-adapting as claimed in claim 6, which is characterized in that
Standing-wave ratio judges that priority judges higher than reflection power value.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761413A (en) * | 2018-05-22 | 2018-11-06 | 中国电子科技集团公司第四十研究所 | RF switch protective device and method for high-power RCS tests |
| CN110492854A (en) * | 2019-09-02 | 2019-11-22 | 深圳市强军科技有限公司 | Radio frequency protects circuit and device |
| CN112073008A (en) * | 2020-09-08 | 2020-12-11 | 中电科仪器仪表有限公司 | Power synthesis amplifier, implementation method, device and system |
| CN112180352A (en) * | 2020-08-24 | 2021-01-05 | 西安空间无线电技术研究所 | High-integration-level comprehensive radio frequency sensing array system |
| CN115291667A (en) * | 2021-12-22 | 2022-11-04 | 夏芯微电子(上海)有限公司 | Wireless communication device and adaptive bias voltage adjusting circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008975A2 (en) * | 2007-07-10 | 2009-01-15 | Skyworks Solutions, Inc. | Balanced amplifier with protection circuit |
| CN102098007A (en) * | 2010-12-21 | 2011-06-15 | 广州杰赛科技股份有限公司 | Mismatch protection device for radio frequency (RF) amplifying circuit and method thereof |
| CN102412855A (en) * | 2010-09-20 | 2012-04-11 | 大唐移动通信设备有限公司 | Determination method of impedance match situation and equipment |
| CN106067769A (en) * | 2016-05-19 | 2016-11-02 | 中电科仪器仪表有限公司 | A kind of power amplifier circuit |
-
2017
- 2017-12-07 CN CN201711282426.0A patent/CN108055010A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008975A2 (en) * | 2007-07-10 | 2009-01-15 | Skyworks Solutions, Inc. | Balanced amplifier with protection circuit |
| CN102412855A (en) * | 2010-09-20 | 2012-04-11 | 大唐移动通信设备有限公司 | Determination method of impedance match situation and equipment |
| CN102098007A (en) * | 2010-12-21 | 2011-06-15 | 广州杰赛科技股份有限公司 | Mismatch protection device for radio frequency (RF) amplifying circuit and method thereof |
| CN106067769A (en) * | 2016-05-19 | 2016-11-02 | 中电科仪器仪表有限公司 | A kind of power amplifier circuit |
Non-Patent Citations (1)
| Title |
|---|
| 吴群: "《电磁兼容原理与技术》", 30 June 2010 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761413A (en) * | 2018-05-22 | 2018-11-06 | 中国电子科技集团公司第四十研究所 | RF switch protective device and method for high-power RCS tests |
| CN108761413B (en) * | 2018-05-22 | 2020-05-12 | 中国电子科技集团公司第四十一研究所 | Radio frequency switch protection device and method for high-power RCS test |
| CN110492854A (en) * | 2019-09-02 | 2019-11-22 | 深圳市强军科技有限公司 | Radio frequency protects circuit and device |
| CN112180352A (en) * | 2020-08-24 | 2021-01-05 | 西安空间无线电技术研究所 | High-integration-level comprehensive radio frequency sensing array system |
| CN112073008A (en) * | 2020-09-08 | 2020-12-11 | 中电科仪器仪表有限公司 | Power synthesis amplifier, implementation method, device and system |
| CN115291667A (en) * | 2021-12-22 | 2022-11-04 | 夏芯微电子(上海)有限公司 | Wireless communication device and adaptive bias voltage adjusting circuit |
| CN115291667B (en) * | 2021-12-22 | 2023-08-25 | 夏芯微电子(上海)有限公司 | Wireless communication device and adaptive bias voltage adjustment circuit |
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