CN110417366A - Radio-frequency power amplifier control device and radio-frequency power amplifier - Google Patents
Radio-frequency power amplifier control device and radio-frequency power amplifier Download PDFInfo
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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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- 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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Abstract
This application involves a kind of radio-frequency power amplifier control device and radio-frequency power amplifiers.Wherein, the radio-frequency power amplifier control device, by the way that time delay module is arranged between input signal processing module and adjustment module, so that input radio frequency signal delays a period of time and is input to adjustment module again, realize to adjust at the time of control signal reaches the adjustment module and at the time of the input radio frequency signal reaches adjustment module between time difference counteracting, it is at low cost and good gamma correction effect can be obtained, avoid the appearance of imaging artefacts.
Description
Technical field
This application involves power amplifier technology fields, more particularly to a kind of radio-frequency power amplifier control device and radio-frequency power
Amplifier.
Background technique
In magnetic resonance imaging system, radio-frequency power amplifier is a common device.Radio-frequency power amplifier generally with
Radio-frequency coil connection, after the radiofrequency signal of input is amplified, output to radio-frequency coil.Radio-frequency power amplifier, needle
For different size of RF signal power, there is different amplitude amplifying powers and different output phases, to present non-
Linear feature.However, medical staff be often desirable to radio-frequency power amplifier be it is linear, that is, be directed to different sizes radio frequency
Signal power, radio-frequency power amplifying power is consistent, amplitude enlargement ratio having the same and identical output phase.Therefore, it needs
It wants additional designs regulating device to be adjusted the amplitude enlargement ratio and output phase of radio-frequency power amplifier, realizes that gain is permanent
Fixed and phase-constant, this is referred to as gamma correction.
The correction course of traditional gamma correction equipment mainly includes three steps: one, to the radiofrequency signal of input into
Row detection；Two, by the regulated quantity for needing to adjust is calculated；Three, radio-frequency power amplifier itself is compensated by adjuster
Gain and output phase.
However, traditional gamma correction equipment has a very big problem: correction needs to be implemented data processing in itself
The transmission process of process and control signal causes the control signal actually corrected to lag behind radio frequency letter at the time of reaching regulating device
Number input time.Especially when the radiofrequency signal of input is fast-changing modulated signal, the time interval of generation is lagged
Lead to the gamma correction result badly of radio-frequency power amplifier, and then cause magnetic resonance imaging system Iimaging Stability poor, very
To generation artifact.
Summary of the invention
Based on this, it is necessary to reach regulating device for the control signal actually corrected in traditional gamma correction equipment
Moment lags behind the problem of input time of radiofrequency signal, provides a kind of radio-frequency power amplifier control device and puts with radio-frequency power
Big device.
The application provides a kind of radio-frequency power amplifier control device, the radio-frequency power amplifier control device and radio frequency
Power amplifier module is used cooperatively, and the radio-frequency power amplifier control device includes:
Input signal processing module, at least two paths of signals, wherein at least using input radio frequency signal processing all the way
In signal detection, at least amplify all the way for signal；
Adjustment module, one end are connect with the input signal processing module signal, and the other end is put with the radio-frequency power
The input end signal connection of big module, is adjusted at least one characteristic quantity in the amplification path signal to input, and will
Amplification path signal adjusted is input to the radio frequency power amplification module, so that the amplification path signal adjusted is through institute
After stating radio frequency power amplification module amplification, output radiofrequency signal is generated；
Signal processing and control module, first end are connect with the input signal processing module signal, second other end
It is connect with the adjustment module signal, at least one characteristic quantity in the detection road signal according to input, generates and adjust control
Signal processed, wherein the adjusting control signal is for controlling the adjustment module at least one in the amplification path signal of input
The adjustment degree of a characteristic quantity；
Time delay module, the signal link being set between the input signal processing module and the adjustment module, is used for
Change input signal transmission delay, it is described defeated to adjust at the time of delaying the amplification path signal arrival adjustment module of input
At the time of the amplification path signal entered reaches the adjustment module and at the time of adjusting control signal reaches the adjustment module
Time difference.
The application also provides a kind of radio-frequency power amplifier, the radio-frequency power amplifier control dress referred to including foregoing teachings
It sets.
This application involves a kind of radio-frequency power amplifier control device and radio-frequency power amplifiers, by input signal
Time delay module is set between reason module and adjustment module, so that input radio frequency signal delays a period of time and is input to adjusting mould again
Block, realize to adjust at the time of control signal reaches the adjustment module reached with the input radio frequency signal adjustment module when
The counteracting of time difference between quarter, it is at low cost and good gamma correction effect can be obtained, avoid the appearance of imaging artefacts.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the radio-frequency power amplifier control device that one embodiment of the application provides；
Fig. 2 is matching for the radio-frequency power amplifier control device that provides of one embodiment of the application and radio frequency power amplification module
Signal transmission link figure when conjunction；
Fig. 3 is the structural schematic diagram for the radio-frequency power amplifier control device that another embodiment of the application provides；
Fig. 4 is matching for the radio-frequency power amplifier control device that provides of one embodiment of the application and radio frequency power amplification module
Signal transmission link figure when conjunction；
Fig. 5 is the structural schematic diagram for the radio-frequency power amplifier control device that another embodiment of the application provides；
Fig. 6 is matching for the radio-frequency power amplifier control device that provides of one embodiment of the application and radio frequency power amplification module
Signal transmission link figure when conjunction；
Fig. 7 is the structural schematic diagram for the radio-frequency power amplifier that one embodiment of the application provides.
Appended drawing reference:
10 radio-frequency power amplifiers
100 radio-frequency power amplifier control devices
110 input signal processing modules
120 adjustment modules
130 signal processings and control module
131 input signal detection modules
132 signal processings and control submodule
133 output signal detection modules
132a first end
132b second end
132c adjustable delay module
132d third end
140 time delay modules
150 output signal processing modules
200 radio frequency power amplification modules
The input terminal of 210 radio frequency power amplification modules
The output end of 220 radio frequency power amplification modules
The load of 300 radio frequency power amplification modules
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
The application provides a kind of radio-frequency power amplifier control device 100.
It should be noted that radio-frequency power amplifier control device 100 provided by the present application do not limit its application field with
Application scenarios.Optionally, radio-frequency power amplifier control device 100 provided by the present application is applied to radio-frequency power amplifier 10,
And the radio frequency power amplification module 200 in the radio-frequency power amplifier control device 100 and the radio-frequency power amplifier 10
It is used cooperatively.Optionally, the radio-frequency power amplifier control device 100 is applied to magnetic resonance imaging system.
As depicted in figs. 1 and 2, in the embodiment of the application, the radio-frequency power amplifier control device 100 includes
Input signal processing module 110, adjustment module 120 and signal processing and control module 130.Wherein, the adjustment module 120
One end is connect with 110 signal of input signal processing module.The other end of the adjustment module 120 is put with the radio-frequency power
210 signal of the input terminal connection of big module 200.At one end and the input signal of the signal processing and control module 130
Manage the connection of 110 signal of module.The signal processing is connect with the other end of control module 130 with 120 signal of adjustment module.
In the present embodiment, the radio-frequency power amplifier control device 100 further includes time delay module 140, the delay
Module 140 is set to the signal link between input signal processing module 110 and the adjustment module 120.
The signal processing module is used for input radio frequency signal processing at least two paths of signals.Wherein at least use all the way
In signal detection.Wherein at least amplify all the way for signal.The adjustment module 120, in the amplification path signal to input
At least one characteristic quantity be adjusted.The adjustment module 120 be also used to by amplification path adjusted it is novel be input to it is described
Radio frequency power amplification module 200, so that the amplification path signal adjusted amplifies through the radio frequency power amplification module 200
Afterwards, output radiofrequency signal is generated.The signal processing and control module 130, in the detection road signal according to input extremely
A few characteristic quantity generates and adjusts control signal.The control signal that adjusts is used to control 120 pairs of adjustment module inputs
The adjustment degree of at least one characteristic quantity in amplification path signal.The time delay module 140 prolongs for changing input signal transmission
When.At the time of the amplification path signal that the time delay module 140 is used to delay input reaches adjustment module 120.The delay
Module 140 is believed at the time of the amplification path signal of the adjustable input reaches adjustment module 120 with adjusting control
Number reach adjustment module 120 at the time of time difference.
Specifically, radio-frequency power amplifier control device 100 provided by the present application connects with radio frequency power amplification module 200
It connects.The input signal processing module 110 can be power splitter or coupler.The input signal processing module 110 can incite somebody to action
Input radio frequency signal processing is at least two paths of signals.
Optionally, the input signal processing module 110 can be by input radio frequency signal processing at two paths of signals.Described two
Road signal can be respectively the amplification path signal of detection the road signal and input of input.
Wherein, the detection road signal of the input is transmitted to the signal processing and control module 130.The signal processing
At least one characteristic quantity with control module 130 according to the detection road signal of the input, generates and adjusts control signal, and by institute
It states adjusting control signal and is sent to the adjustment module 120.The adjusting control signal is right for controlling the adjustment module 120
The adjustment degree of at least one characteristic quantity in the amplification path signal of input.
Wherein, the amplification path signal of the input is then transmitted to time delay module 140.The time delay module 140 is preset
Input signal transmission delay, at the time of delaying amplification path signal arrival adjustment module 120 of input.Undergoing the input
After signal transmission delay, the amplification path signal of the input is transmitted to the adjustment module 120.
Due to the detection road signal of input need to be transmitted to through the input signal processing module 110 signal processing with
Control module 130 also needs the detection road signal processing by signal processing and 130 pairs of control module inputs, ultimately generates described
Adjust control signal.The process that above-mentioned adjusting control signal generates needs to consume the regular hour.However, the amplification of the input
Road signal is directly to reach the adjustment module 120.Therefore, the adjusting control signal reaches the adjustment module 120
Moment, hence it is evident that at the time of being later than amplification path signal arrival adjustment module 120 of the input.It is appreciated that the two generates
One time difference causes the adjusting that is actually used in correction control signal to lag behind input at the time of reaching adjustment module 120
At the time of amplification path signal reaches adjustment module 120.Therefore, by adjustment module 120 and input signal processing module 110 it
Between be arranged a time delay module 140.The time delay module 140 has time-delay characteristics, can delay the amplification path letter of the input
Number reach the adjustment module 120 at the time of.The time delay module 140, which realizes, to be adjusted the amplification path signal of the input and arrives
At the time of up to adjustment module 120 and the time difference adjusted at the time of control signal reaches adjustment module 120.
Optionally, the above-mentioned time difference can be 0, when the above-mentioned time difference is 0, the amplification path signal of the input and described
Control signal is adjusted to be while reaching the adjustment module 120.When actually executing, the above-mentioned time difference can be nanosecond
Or the microsecond order of magnitude, the amplification path signal of the input and adjusting control signal can be considered as approximate while reach the tune
Save module 120.
In the present embodiment, by the way that time delay module 140 is arranged between input signal processing module 110 and adjustment module 120,
So that input radio frequency signal delays a period of time and is input to adjustment module 120 again, realizes and the tune is reached to adjusting control signal
The counteracting of time difference between at the time of section module 120 and at the time of input radio frequency signal arrival adjustment module 120, cost
It is low and good gamma correction effect can be obtained, avoid the appearance of imaging artefacts.
As described in fig. 3 and fig. 4, in the embodiment of the application, the signal processing and control module 130 include input
Signal detection module 131 and signal processing and control submodule 132.At the input signal detection module 131 and the signal
Reason is connect with 132 signal of control submodule.
Wherein, the signal processing and control submodule 132 include first end 132a and second end 132b.The first end
132a is connect with 131 signal of input signal detection module.The second end 132b and 120 signal of adjustment module connect
It connects.The input signal detection module 131 is used to detect at least one characteristic quantity of the detection road signal of input.At the signal
Reason and control submodule 132, at least one characteristic quantity of the input for being obtained according to detection detected in the signal of road, generate and adjust
Section control signal.The adjusting controls signal, for control 120 pairs of adjustment module inputs amplification path signal at least one
The adjustment degree of characteristic quantity.
Specifically, the characteristic quantity can be amplitude, be also possible to phase.Circuit for checking input signals can detecte input
Detection road signal amplitude and/or phase.Further, the input signal detection module 131 believes the detection road of input
Number amplitude and/or phase be sent to the signal processing and control submodule 132.
Optionally, the signal processing and control submodule 132 can according to the amplitude of the detection road signal of the input,
Calculate the amplitude of the input radio frequency signal.Further, the signal processing is penetrated with control submodule 132 according to the input
Amplitude and the preset signals requirement of frequency signal, are calculated the adjustment degree of the amplification path signal amplitude of input.The default letter
Number require be 100 module final output of radio-frequency power amplifier control device output radiofrequency signal amplitude.
The amplification path signal amplitude of input is a main data, due to the adjustment journey of the amplification path signal phase of input
Degree can be obtained by the adjustment degree of amplitude, it will be understood that the adjustment degree of the amplification path signal phase of input can also obtain
Out.The signal processing and control submodule 132 are according to the amplification path signal amplitude of the input and/or the adjustment journey of phase
Degree generates and adjusts control signal.The adjusting control signal is applied to the adjustment module 120, for controlling the adjusting mould
The amplitude of the amplification path signal of 120 pairs of block inputs and/or the adjustment degree of phase.By the adjustment module 120 to described defeated
The adjustment of the amplitude and/or phase of the amplification path signal entered, then by further radio frequency power amplification module 200 to adjusted
The amplification of the amplitude and/or phase of the amplification path signal of input, realizes the amplitude to radio-frequency power amplifier control device 100
Enlargement ratio and output phase are according to the adjustment of user demand.
In the present embodiment, by the way that input signal detection module 131 is arranged, the feature of the detection road signal of input can detecte
Amount, and then the characteristic quantity of input radio frequency signal can be obtained.It, can basis by setting signal processing and control submodule 132
User demand, controls to adjust the adjustment degree of at least one characteristic quantity in the amplification path signal of 120 pairs of module inputs, and realization is penetrated
The gamma correction of frequency power amplifier module 200.
In the embodiment of the application, at least one described characteristic quantity includes amplitude and/or phase.
Specifically, the characteristic quantity can only include amplitude.The characteristic quantity can only include phase.The characteristic quantity can
Simultaneously to include amplitude and phase.
It include amplitude and/or phase by the way that characteristic quantity is arranged, so that entire radio-frequency power amplifier control in the present embodiment
The adjustment to the amplification path signal of input may be implemented in device 100, so that output radiofrequency signal is met the needs of users, it is real
The gamma correction of existing radio frequency power amplification module 200.
In the embodiment of the application, the input signal detection module 131 is the detection road letter for detecting input
Number characteristic quantity device.The input signal detection module 131 may include wave detector, diode or phase discriminator.Wherein, institute
The characteristic quantity for stating the detection road signal of input includes amplitude and/or phase.
Specifically, the input signal detection module 131 can be circuit for checking input signals.Optionally, the input
Signal deteching circuit can detect the characteristic quantity of the detection road signal of the input by way of envelope detection.At this point, described
Circuit for checking input signals can detecte the amplitude of the detection road signal of input.
Optionally, the circuit for checking input signals can detect the inspection of the input by way of direct RF sampling
Survey the characteristic quantity of road signal.At this point, the circuit for checking input signals not only can detecte the amplitude of the detection road signal of input, but also
It can detecte the phase of the detection road signal of input.
By the way that the characteristic quantity of the detection road signal of the detection of input signal detection module 131 input is arranged, can calculate
The characteristic quantity of the input radio frequency signal out.Further, the amplification path inputted due to 200 Duis of the radio frequency power amplification module
The adjustment degree of the characteristic quantity of signal is fixed, it will be understood that is needed according to the characteristic quantity of the input radio frequency signal and user
It asks (i.e. user go for the characteristic quantity of final output radiofrequency signal), it can be deduced that 120 pairs of the adjustment module input
Amplification path signal at least one characteristic quantity adjustment degree.It is appreciated that the feature of the detection road signal of the input
Amount is to generate the foundation for adjusting control signal.
In the present embodiment, by the way that the input signal detection module 131 is arranged, the detection road signal of input can detecte
Amplitude and/or phase, amplitude and/or the phase according to the detection road signal for being subsequent input are it can be concluded that show that the input is penetrated
The amplitude and/or phase of frequency signal, and then obtain at least one of the amplification path signal of 120 pairs of adjustment module inputs
The adjustment degree of characteristic quantity, provides data basis.
In the embodiment of the application, the adjustment module 120 is the feature with the amplification path signal for changing input
The device of amount.The adjustment module 120 includes controllable attenuator or phase shifter.Wherein, the spy of the amplification path signal of the input
Sign amount includes amplitude and/or phase.
Specifically, the adjustment module 120 is after receiving the adjusting control signal, the amplification of the adjustable input
The amplitude and/or phase of road signal.Further, amplification path signal adjusted is delivered to described by the adjustment module 120
Radio frequency power amplification module 200.The radio frequency power amplification module 200 can again the amplitude amplification to amplification path signal and/or
Phase adjustment ultimately generates output radiofrequency signal.
In the present embodiment, by the way that adjustment module 120 is arranged, so that the amplification path signal in input enters radio-frequency power amplification
Before module 200, the amplitude and/or phase of the amplification path signal of input are adjusted, so that final output radiofrequency signal
Amplitude and/or phase meet the preset signals requirement of user, realize the gamma correction to radio frequency power amplification module 200.
In the embodiment of the application, the time delay module 140 is to have time-delay characteristics to the amplification path signal of input
Device.The time delay module 140 is one of LC filter, SAW filter and delay line or a variety of combinations.
Specifically, the time delay module 140 can preset input signal transmission delay, delay the amplification path letter of input
Number reach adjustment module 120 at the time of.By the way that time delay module 140, the amplification path signal of the adjustable input is arranged
At the time of reaching adjustment module 120 and the adjusting controls time difference at the time of signal reaches adjustment module 120.
Optionally, the time difference can be 0.When the time difference is 0, the amplification path for adjusting control signal and the input
Signal can reach the adjustment module 120 simultaneously.The adjusting control signal will not lag behind the input amplification path signal.
Certainly, during practical application, the time difference may not just be 0, not occur error completely.The radio frequency of the application
Power amplifier control device 100 can control the time difference and be in the range of 0.01 microsecond to 0.05 microsecond, be approximately
0.It is described to adjust the amplification path signal approximation for controlling signal and the input while reaching the adjustment module 120 through testing, no
It will affect the stability of magnetic resonance imaging system imaging.
In the present embodiment, by the way that the time delay module 140 is arranged, so that the amplification path signal of the input is realized to described
The real-time tracking for adjusting control signal avoids adjusting control signal lag in the amplification path signal arrival adjustment module 120 of input
Caused magnetic resonance imaging system Iimaging Stability is poor, or even generates artifact.
In the embodiment of the application, the input signal transmission delay is greater than 0.2 microsecond.
Specifically, it is greater than 0.2 microsecond by the way that the input signal transmission delay is arranged, the input of long period can be provided
Signal transmission delay is realized and is arrived at the time of adjusting control signal arrival adjustment module 120 with the input radio frequency signal
The counteracting of time difference between at the time of up to adjustment module 120.For example, the input signal transmission delay can be 0.4 microsecond.
The input signal transmission delay can be 0.5 microsecond.The input signal transmission delay can be 0.7 microsecond.The input
Signal transmission delay can be 1 microsecond.
In the embodiment of the application, enter the input signal processing module 110 from the detection road signal of input
Moment, until the time adjusted between at the time of control signal reaches adjustment module 120 include the first transmission time,
Second transmission time, third transmission time and the 4th transmission time.
First transmission time, for the feature of the detection road signal of the input signal detection module 131 detection input
The time of amount, second transmission time are that the signal processing and the detection road signal of 132 pairs of control submodule inputs carry out
It handles and generates the time for adjusting control signal.The third transmission time controls signal via described for the adjusting
Signal processing and control submodule 132 are transmitted to the time of the adjustment module 120.4th transmission time is the letter
Number processing with control submodule 132 in adjustable delay module 132c apply adjustable transmission delay time.
Specifically, due to transmission signal chain road (the i.e. input signal processing module 110- of the amplification path signal of the input
Time delay module 140- adjustment module 120- radio frequency power amplification module 200, this transmission signal chain road) it is radio frequency transmission link,
Therefore, the time delay module provides radio frequency delay.Radio frequency delay is fixed value, can not be changed in real time.It is appreciated that described
The input signal transmission delay that time delay module 140 provides is a fixed value, needs to preset, and in signals transmission
The occurrence of delay time can not be adjusted in real time.Therefore, it is inaccurate to may cause the input signal transmission delay for time-delay mechanism,
At the time of causing the amplification path signal of the input to reach adjustment module 120 and adjusting control signal reaches the tune
Time difference at the time of saving module 120 is excessive or too small, is unable to reach expected delay effect.
In the present embodiment, adjustable delay module 132c can be set in the signal processing and control submodule 132.Institute
The adjustable transmission delay of signal application can be controlled the adjusting by stating adjustable delay module 132c.The biography for adjusting control signal
Defeated signal link belongs to analog domain or numeric field.Therefore, adjustable transmission delay is the delay of analog domain or numeric field, specific number
Value is adjustable.The specific value of the adjustable transmission delay is the 4th transmission time.By the way that adjustable 4th transmission is arranged
Time, the time that adjusting control signal can be made to reach the adjustment module 120 is adjustable, sets with the time delay module 140
The input signal transmission delay cooperation set, realize the amplification path signal for adjusting the input reach the adjustment module 120 when
The purpose for carving time difference at the time of reaching adjustment module 120 with the adjusting control signal, meets user demand.
It, can be right by the adjustable delay module 132c in the signal processing and control submodule 132 in the present embodiment
It adjusts control signal and applies property and be negative the adjustable transmission delay of delay, as the 4th transmission time, with the time delay module 140
The input signal transmission delay of setting cooperates, and realizes that the amplification path signal for adjusting the input reaches the adjustment module 120
Moment and the purpose for adjusting time difference at the time of control signal reaches adjustment module 120, meet user demand.
In the embodiment of the application, by adjusting the numerical values recited of the 4th transmission time, to change described
One transmission time, second transmission time, the summation of the third transmission time and the 4th transmission time with it is described defeated
Enter the relationship of signal transmission delay, with adjust the input amplification path signal reach adjustment module 120 at the time of and institute
State the time difference adjusted at the time of control signal reaches adjustment module 120.
Optionally, first transmission time, second transmission time, the third transmission time and the described 4th pass
The defeated time can satisfy formula 1:
Wherein, TSIt is controlled at the time of reaching adjustment module 120 for the amplification path signal of the input with the adjusting
Signal reaches time difference at the time of adjustment module 120.T is the input signal transmission delay.T1It is passed for described first
The defeated time.T2For second transmission time.T3For the third transmission time.T4For the 4th transmission time.
For example, when the input signal transmission delay be equal to first transmission time, second transmission time,
The third transmission time and the 4th transmission time and when, the amplification path signal of the input reaches the adjustment module
At the time of 120 and the adjusting controls time difference at the time of signal reaches adjustment module 120, is 0.That is, TSIt is 0.
In the present embodiment, since the 4th transmission time is adjustable, when user can be by adjusting the 4th transmission
Between numerical value, adjust the input amplification path signal reach adjustment module 120 at the time of and adjustings control signal
Time difference at the time of adjustment module 120 is reached, to meet user demand.
In the present embodiment, by adjusting the numerical values recited of the 4th transmission time, the amplification of the adjustable input
At the time of road signal reaches adjustment module 120 and described adjust at the time of control signal reaches adjustment module 120
Time difference, so that the adjusting control signal generated and the amplification path signal of input reach adjustment module 120 and can be synchronized to
Up to the adjustment module 120, while meeting user demand, magnetic resonance imaging system Iimaging Stability is improved, avoids generating
Artifact.
As shown in Figure 5 and Figure 6, in the embodiment of the application, the radio-frequency power amplifier control device 100 is also wrapped
Include output signal processing module 150.The output of the output signal processing module 150 and the radio frequency power amplification module 200
220 signals are held to connect.The output signal processing module 150 is used to for the output radiofrequency signal being processed at least two-way letter
Number.It is wherein at least used for signal detection all the way.Wherein at least all the way for exporting to the load of radio frequency power amplification module 200
300。
Specifically, the characteristic quantity for the amplification path signal that foregoing teachings are inputted by 120 Duis of the adjustment module has carried out one
The characteristic quantity of secondary adjustment, the amplification path signal inputted by 200 Duis of the radio frequency power amplification module has carried out secondary adjustment, raw
At output radiofrequency signal.However, the adjustment module 120 is inputted according to the input signal detection module 131 detection
Detection signal characteristic quantity, calculate the characteristic quantity of the input radio frequency signal, gone in conjunction with user final
Export the adjusting control signal that the characteristic quantity of radiofrequency signal generates.The detection to input radio frequency signal is only relied on, can not achieve
Exact non-linear correction to radio frequency power amplification module 200.In other words, the characteristic quantity of the output radiofrequency signal of reality output,
Between the characteristic quantity (characteristic quantity of theory output radiofrequency signal) of the output radiofrequency signal gone for user, it is possible to create accidentally
Difference.For eliminate both error, need to be further processed the output radiofrequency signal, so to the adjusting control signal into
Row adjustment.By the way that the output signal processing module 150 is arranged, the output radiofrequency signal can be further processed.
It, can be to the output radiofrequency signal into one by the way that the output signal processing module 150 is arranged in the present embodiment
Step processing, is processed at least two paths of signals for the output radiofrequency signal, convenient for the subsequent adjustment to control signal is adjusted.
Please continue to refer to Fig. 5 and Fig. 6, in the embodiment of the application, the signal processing is also wrapped with control module 130
Include output signal detection module 133.One end of the output signal detection module 133 and the output signal processing module 150
Signal connection.The other end and the signal processing and 132 signal of control submodule of the output signal detection module 133 connect
It connects.The output signal detection module 133 is used to detect at least one characteristic quantity of the detection road signal of output.The output letter
The detection road signal for the output that number detection module 133 is used to will test is input to the signal processing and control submodule 132,
In order to the signal processing and control submodule 132 according in the detection road signal of the output at least one characteristic quantity with
At least one characteristic quantity of the detection road signal of the input forms closed-loop control.The signal processing and control submodule 132,
According at least one spy of the detection road signal of at least one characteristic quantity and the input in the detection road signal of the output
The error of sign amount adjusts the adjusting and controls signal, and then passes through the amplification adjusted for adjusting control signal to input
The characteristic quantity of road signal is adjusted.
Specifically, the signal processing and control submodule 132 can further include third end 132d.The output signal inspection
The one end for surveying module 133 is connect with 150 signal of output signal processing module.The output signal detection module 133 it is another
One end is connect with the signal processing with the third end 132d signal of control submodule 132.It is penetrated to eliminate the output actually obtained
The characteristic quantity of frequency signal, the error of the characteristic quantity of the output radiofrequency signal gone for user, firstly, passing through setting output letter
At least one characteristic quantity of the detection road signals of numbers 133 pairs of detection module output detects.At least one described characteristic quantity packet
Include amplitude and/or phase.
Further, the signal processing and control submodule 132 receive the detection road signal of the output, obtain simultaneously
The characteristic quantity of the detection road signal of output.Similarly with the detection road signal of input, the signal processing and control submodule 132 can
With the characteristic quantity of the detection road signal of the output obtained according to detection, the spy of the output radiofrequency signal of reality output can be calculated
Sign amount.
Finally, the signal processing and control submodule 132 can characteristic quantities according to input radio frequency signal, reality output
Output radiofrequency signal characteristic quantity and the characteristic quantity of final output radiofrequency signal of user demand (i.e. theoretical export is penetrated
The characteristic quantity of frequency signal), it adjusts the adjusting and controls signal, to export the output radiofrequency signal of user demand, form closed loop control
System.
Entire radio-frequency power amplifier control device 100 is after coming into operation, the spy of the output radiofrequency signal initially exported
Sign amount may be not accurate enough.However, increasingly generating stabilization after radio-frequency power amplifier control device 100 is constantly corrected
, it meets customer need, numerical value accurately exports radiofrequency signal.
In the present embodiment, pass through at least one spy of the detection road signal of 133 pairs of output signal detection module outputs of setting
Sign amount, realize according to the output detection road signal at least one characteristic quantity and the input detection road signal extremely
The error of a few characteristic quantity adjusts the adjusting and controls signal, and then controls signal to defeated by the adjusting adjusted
The characteristic quantity of the amplification path signal entered is adjusted, and generates stable, meets customer need, and numerical value accurately exports radio frequency letter
Number.
As shown in fig. 7, the application also provides a kind of radio-frequency power amplifier control device 100.
In the embodiment of the application, the radio-frequency power amplifier control device 100 includes what foregoing teachings referred to
Radio-frequency power amplifier control device 100.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims by the application.
Claims (12)
1. a kind of radio-frequency power amplifier control device, which is characterized in that the radio-frequency power amplifier control device (100) with
Radio frequency power amplification module (200) is used cooperatively, and the radio-frequency power amplifier control device (100) includes:
Input signal processing module (110), at least two paths of signals, wherein at least using input radio frequency signal processing all the way
In signal detection, at least amplify all the way for signal；
Adjustment module (120), one end are connect with input signal processing module (110) signal, the other end and the radio frequency
Input terminal (210) signal of power amplifier module (200) connects, at least one feature in the amplification path signal to input
Amount is adjusted, and amplification path signal adjusted is input to the radio frequency power amplification module (200), so that the tune
Amplification path signal after whole generates output radiofrequency signal after the radio frequency power amplification module (200) amplification；
Signal processing and control module (130), first end is connect with input signal processing module (110) signal, another
End is connect with the adjustment module (120) signal, at least one characteristic quantity in the detection road signal according to input, is generated
Adjust control signal, wherein the adjusting control signal is for controlling the adjustment module (120) to the amplification path signal of input
In at least one characteristic quantity adjustment degree；
Time delay module (140), the letter being set between the input signal processing module (110) and the adjustment module (120)
Number link, for changing input signal transmission delay, delay input amplification path signal reach the adjustment module (120) when
Carve, with adjust the input amplification path signal reach adjustment module (120) at the time of and adjustings control signal arrive
Time difference at the time of up to the adjustment module (120).
2. radio-frequency power amplifier control device according to claim 1, which is characterized in that the signal processing and control
Module (130) includes:
Input signal detection module (131) and signal processing and control submodule (132)；
The input signal detection module (131) connect with input signal processing module (110) signal, defeated for detecting
At least one characteristic quantity of the detection road signal entered；
The signal processing and control submodule (132), including first end (132a) and second end (132b), the first end
(132a) is connect with input signal detection module (131) signal, the second end (132b) and the adjustment module (120)
Signal connection, at least one characteristic quantity of the input for being obtained according to detection detected in the signal of road, which generates, adjusts control letter
Number, wherein the adjusting control signal is for controlling the adjustment module (120) at least one in the amplification path signal of input
The adjustment degree of characteristic quantity.
3. radio-frequency power amplifier control device according to claim 1 or 2, which is characterized in that at least one described spy
Sign amount includes amplitude and/or phase.
4. radio-frequency power amplifier control device according to claim 2, which is characterized in that the input signal detection mould
Block (131) is the device for the characteristic quantity for detecting the detection road signal of input, and the input signal detection module (131) includes
Wave detector, diode or phase discriminator, wherein the characteristic quantity of the detection road signal of the input includes amplitude and/or phase.
5. radio-frequency power amplifier control device according to claim 1, which is characterized in that the adjustment module (120)
For the device of the characteristic quantity with the amplification path signal for changing input, the adjustment module (120) includes controllable attenuator or shifting
Phase device, wherein the characteristic quantity of the amplification path signal of the input includes amplitude and/or phase.
6. radio-frequency power amplifier control device according to claim 1, which is characterized in that the time delay module (140)
To have the device of time-delay characteristics to the amplification path signal of input, the time delay module (140) is LC filter, SAW filter
With one of delay line or a variety of combinations.
7. radio-frequency power amplifier control device according to claim 1, which is characterized in that the input signal transmission is prolonged
When be greater than 0.2 microsecond.
8. radio-frequency power amplifier control device according to claim 2, which is characterized in that from the detection road signal of input
At the time of into input signal processing module (110), until the adjustings control signal arrival adjustment module (120)
At the time of between time include the first transmission time, the second transmission time, third transmission time and the 4th transmission time；
First transmission time is the feature for the detection road signal that the input signal detection module (131) detects the input
The time of amount；
Second transmission time is that the signal processing and control submodule (132) carry out the detection road signal of the input
It handles and generates the time for adjusting control signal；
The third transmission time is that adjusting control signal is transmitted to via the signal processing and control submodule (132)
The time of the adjustment module (120)；
4th transmission time is that the adjustable delay module (132c) in the signal processing and control submodule (132) applies
Adjustable transmission delay time.
9. radio-frequency power amplifier control device according to claim 8, which is characterized in that passed by adjusting the described 4th
The numerical values recited of defeated time, to change first transmission time, second transmission time, the third transmission time and institute
The summation of the 4th transmission time and the relationship of the input signal transmission delay are stated, is arrived with adjusting the amplification path signal of the input
At the time of up to the adjustment module (120) and the time adjusted at the time of control signal reaches adjustment module (120)
Difference.
10. radio-frequency power amplifier control device according to claim 1, which is characterized in that further include:
Output signal processing module (150) is connect with output end (220) signal of the radio frequency power amplification module (200), is used
In the output radiofrequency signal is processed at least two paths of signals, it is wherein at least used for signal detection all the way, is at least used for all the way
It exports to the load (300) of radio frequency power amplification module (200).
11. radio-frequency power amplifier control device according to claim 10, which is characterized in that the signal processing and control
Molding block (130) further includes output signal detection module (133), and one end and output signal processing module (150) signal connect
It connects, the other end is connect with the signal processing with control submodule (132) signal, for detecting the detection road signal of output extremely
A few characteristic quantity；
The detection road signal for the output that the output signal detection module (133) is used to will test is input to the signal processing
With control submodule (132), in order to which the signal processing and control submodule (132) are according to the detection road signal of the output
In at least one characteristic quantity and the input detection road signal at least one characteristic quantity formed closed-loop control, according to described
At least one feature of the detection road value detection signal of at least one characteristic quantity and the input in the detection road signal of output
Adjusting control signal described in the error transfer factor of amount, and then by the control signal adjusted that adjusts to the amplification path letter of input
Number characteristic quantity be adjusted.
12. a kind of radio-frequency power amplifier, which is characterized in that including radio-frequency power described in claim 1 to 11 any one
Amplifier control device (100).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768760.XA CN110417366A (en) | 2019-08-20 | 2019-08-20 | Radio-frequency power amplifier control device and radio-frequency power amplifier |
| US16/726,865 US11165453B2 (en) | 2019-08-20 | 2019-12-25 | Radio frequency power amplifier control device |
| US17/453,167 US11863219B2 (en) | 2019-08-20 | 2021-11-01 | Radio frequency power amplifier control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768760.XA CN110417366A (en) | 2019-08-20 | 2019-08-20 | Radio-frequency power amplifier control device and radio-frequency power amplifier |
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| Publication Number | Publication Date |
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| CN110417366A true CN110417366A (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910768760.XA Pending CN110417366A (en) | 2019-08-20 | 2019-08-20 | Radio-frequency power amplifier control device and radio-frequency power amplifier |
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| CN113534018A (en) * | 2020-04-14 | 2021-10-22 | 通用电气精准医疗有限责任公司 | Linear compensation method and device of radio frequency amplifier and magnetic resonance imaging system |
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