CN105676189A - Power transmitter - Google Patents
Power transmitter Download PDFInfo
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- CN105676189A CN105676189A CN201510960750.8A CN201510960750A CN105676189A CN 105676189 A CN105676189 A CN 105676189A CN 201510960750 A CN201510960750 A CN 201510960750A CN 105676189 A CN105676189 A CN 105676189A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
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Abstract
The invention discloses a power transmitter, which comprises a preposed solid-state amplification module, a traveling-wave tube amplification module, a coupling output module and a control protection module. The control protection module comprises a processor, an automatic level control ALC module, a plurality of information detection modules and an information processing module; the processor is used for generating a control voltage value according to output power of the coupling output module and a preset output power value; the automatic level control ALC module is used for controlling an adjustable attenuator in the preposed solid-state amplification module according to the control voltage value, and carrying out attenuation adjustment on an input signal; the plurality of information detection modules are connected with the preposed solid-state amplification module, the traveling-wave tube amplification module and the coupling output module, and are used for detecting operating parameters of the preposed solid-state amplification module, the traveling-wave tube amplification module, a traveling-wave tube power supply and the coupling output module; and the information processing module is connected with the plurality of information detection modules, is used for processing the operating parameters and controlling the power transmitter to be in operating states corresponding to the operating parameters.
Description
Technical field
The present invention relates to electronic technology field, particularly to a kind of power transmitter.
Background technology
For high-power transmitter, travelling-wave tube is its Primary Component, it is carried out effective detection protection and effectively controlling and can improve travelling-wave tube service life, and guarantee TWT transmitter steady operation.
Traditional TWT transmitter monitoring technology is generally with PLC device or singlechip microcontroller for core; peripheral interface device is connected by PLC device or singlechip microcontroller; and the running parameter of the travelling-wave tube power transmitter that these peripheral interface devices are detected processes, TWT transmitter is carried out detection protection and effectively controls.
For high power travelling wave tube transmitter; it needs the parameter monitored a lot; and the monitoring and protection to high power travelling wave tube transmitter requires higher real-time; the monitoring technology inadequate resource when processing the running parameter of TWT transmitter being core with PLC device or singlechip microcontroller, can not meet requirement of real-time during TWT transmitter work.
Summary of the invention
The embodiment of the present invention provides a kind of power transmitter, for what solve prior art exists, with PLC device or singlechip microcontroller be core monitoring technology can not meet TWT transmitter work time the technical problem of requirement of real-time.
The embodiment of the present application provides a kind of power transmitter, including:
Preposition solid-state amplification module; Travelling-wave tube amplification module, is connected with described preposition solid-state amplification module; Outcoupling module, is connected with described travelling-wave tube amplification module; Control protection module, including: processor, it is connected with described outcoupling module, for the output according to described outcoupling module and preset output power value, generates and control magnitude of voltage; Auto level control ALC module, with described processor, described preposition solid-state amplification module and described outcoupling module connect, and input signal, for the adjustable attenuator in described preposition solid-state amplification module being controlled according to described control magnitude of voltage, is carried out Attenuation adjustable by described ALC module; Multiple information detecting module, respectively with described preposition solid-state amplification module, described travelling-wave tube amplification module and described outcoupling module connect, and described information detecting module is used for detecting described preposition solid-state amplification module, the running parameter of described travelling-wave tube amplification module and described outcoupling module; Message processing module, is connected with the plurality of information detecting module, is used for processing described running parameter, and controls described power transmitter and be in the duty corresponding with described running parameter.
Optionally, the plurality of information detecting module includes temperature detecting module, standing wave detection of mismatch module, input stimulus detection module, current detection module and one or more in voltage detection module.
Optionally, described preposition solid-state amplification module also includes:
Directional coupler, for generating coupled end input signal and straight-through end input signal according to described input signal;
Preselector, is connected with described directional coupler, and described preselector is filtered processing for described straight-through end inputs signal.
Optionally, described preposition solid-state amplification module includes:
Amplify sublink;
Switch, the first end of described switch is connected with described preselector and described message processing module, and the other end of described switch is connected with described amplification sublink;
Described input stimulus detection module generates and exports the input voltage corresponding with described coupled end input signal for inputting signal according to described coupled end;
Described message processing module is used for determining that described input voltage is whether in predetermined voltage range; Wherein, when described input voltage is in described predetermined voltage range, control described switch in the conduction state, and control described preselector to described straight-through end input signal be filtered process.
Optionally, described standing wave detection of mismatch module is used for: generates the forward output voltage corresponding with described output signal according to the output signal of described outcoupling module, and generates the reverse output voltage corresponding with described reflected signal according to the reflected signal of the discharger that described power transmitter connects;
Described message processing module is for determining voltage standing wave ratio according to described forward output voltage and described reverse output voltage; Wherein, when described voltage standing wave ratio is within the scope of default standing-wave ratio, described output signal is decayed, when described voltage standing wave ratio is more than or equal to default standing-wave ratio maximum, close described power transmitter.
Optionally, described outcoupling module includes:
Circulator, is connected with described travelling-wave tube amplification module;
Power absorption load, is connected with described circulator, and described power absorption load is used for absorbing described reflected signal.
Optionally, described power transmitter also includes:
Power module, is connected with described travelling-wave tube amplification module;
Described voltage detection module is for detecting the supply voltage of described power module;
Described message processing module is for determining in the supply voltage threshold value whether described supply voltage exceedes described travelling-wave tube amplification module; Wherein, when described supply voltage exceedes described supply voltage threshold value, control described power module and stop described travelling-wave tube amplification module is powered.
Optionally, described current detection module is for detecting the Body-current of described travelling tube helical line;
Described message processing module is for determining whether described Body-current exceedes the current threshold of described travelling tube helical line; Wherein, when described Body-current exceedes described current threshold, described power transmitter is closed.
Optionally, described temperature detecting module is for detecting the operating temperature of described travelling-wave tube amplification module;
Described message processing module is for determining whether described operating temperature exceedes the temperature threshold values of travelling-wave tube amplification module; Wherein, when described operating temperature exceedes described temperature threshold values, described power transmitter is closed.
Said one in the embodiment of the present application or multiple technical scheme, at least have one or more technique effects following:
In the embodiment of the present application, the control protection module of power transmitter includes processor and message processing module, and processor, for the output according to described outcoupling module and preset output power value, generates and controls magnitude of voltage; Input signal, for the adjustable attenuator in described preposition solid-state amplification module being controlled according to described control magnitude of voltage, is carried out Attenuation adjustable by auto level control ALC module; And message processing module is connected with multiple information detecting module, and the running parameter of the power transmitter that multiple information detecting module detect is processed.
Visible, in the scheme in the embodiment of the present application, processor is mainly for the treatment of the information of ALC module, and then power transmitter is carried out auto level control; The running parameter that multiple information detecting module detect is not take up the resource of processor; processed by message processing module; make to control protection module and can quickly carry out auto level control and running parameter process simultaneously; thus solving in prior art; with PLC device or singlechip microcontroller be core monitoring technology can not meet TWT transmitter work time the technical problem of requirement of real-time; achieve the processing speed accelerating to control protection module, to meet the technique effect of requirement of real-time when TWT transmitter works.
Accompanying drawing explanation
Fig. 1 is the structural representation of power transmitter in the embodiment of the present application;
Fig. 2 is the structural representation controlling protection module of power transmitter in the embodiment of the present application;
Fig. 3 is the schematic diagram of information detecting module in the embodiment of the present application;
Fig. 4 is input stimulus and the output detection schematic diagram of power transmitter in the embodiment of the present application.
Detailed description of the invention
In the technical scheme that the embodiment of the present application provides; control at power transmitter is protected in module; adopt processor and message processing module; the running parameter simultaneously ALC module parameter and the information detecting module of power transmitter detected carries out monitor in real time and process, to meet requirement of real-time during TWT transmitter work.
Below in conjunction with accompanying drawing, the main of the embodiment of the present application technical scheme is realized principle, detailed description of the invention and the beneficial effect that should be able to reach is explained in detail.
As it is shown in figure 1, be the structural representation of power transmitter in the embodiment of the present application. This power transmitter includes: preposition solid-state amplification module 1; Travelling-wave tube amplification module 2, is connected with preposition solid-state amplification module 1; Outcoupling module 3, is connected with travelling-wave tube amplification module 2; Control protection module 4.
Include as in figure 2 it is shown, control protection module 4: processor 41, be connected with outcoupling module 3, for the output according to described outcoupling module 3 and preset output power value, generate and control magnitude of voltage;
Auto level control ALC module 42, with described processor 41, described preposition solid-state amplification module 1 and described outcoupling module 3 connect, input signal, for the adjustable attenuator in described preposition solid-state amplification module 1 being controlled according to described control magnitude of voltage, is carried out Attenuation adjustable by described ALC module 42;
Multiple information detecting module 43, respectively with described preposition solid-state amplification module 1, described travelling-wave tube amplification module 2 and described outcoupling module 3 connect, described information detecting module 43 is used for detecting described preposition solid-state amplification module 1, the running parameter of described travelling-wave tube amplification module 2 and described outcoupling module 3;
Message processing module 44, is connected with the plurality of information detecting module 43, is used for processing described running parameter, and controls described power transmitter and be in the duty corresponding with described running parameter.
In the embodiment of the present application, the circuit of the circuit of multiple information detecting module 43 and message processing module 44 Yu ALC module 42 is separated, the information that processor 41 is relevant for processing ALC module 42, and message processing module 44 constantly to carry out information by interexchange bus and information detecting module 43 mutual. In actual applications, message processing module 44 can be PLD, such as CPLD, FPGA etc. As it is shown on figure 3, information detecting module 43 includes: temperature detecting module 430, standing wave detection of mismatch module 431, input stimulus detection module 432, current detection module 433 and one or more in voltage detection module 434.
Motility for message processing module 44 for CPLD, according to CPLD, it is possible to by actual functional capability demand, CPLD is divided into multiple information reading module, each information reading module works alone. As: temperature read module is for reading the running parameter of temperature detecting module 430 detection, and standing wave mismatch read module is for reading the running parameter of standing wave detection of mismatch module 431 detection. Thus make to control to protect the data that above-mentioned information detecting module 43 can constantly be detected by module 4 to be read out; then by the analysis and processing module in CPLD, the information detected is analyzed, and controls power transmitter and be in the duty corresponding with described running parameter.
In the embodiment of the present application, information detecting module 43 is connected with message processing module 44 by interexchange bus, when the event having necessary notifier processes device 41 occurs, with interrupt mode notifier processes device 41, and the inquiry of real-time response processor 41. Wherein, it is necessary to the event of notifier processes device 41 can need to carry out the fault of real-time response for power transmitter, and these faults can cause that power transmitter is damaged.
Concrete, the information of information detecting module 43 detection can be analyzed and breakdown judge by message processing module 44. Environmental work requirement according to high-power transmitter, by most common failure according to its extent of injury to power transmitter, it is possible to be divided into the classification such as real-time response and non real-time response. As shown in table 1, for the illustration of fault category.
| Fault type | Response requirement |
| Standing wave mismatch | In real time |
| Blasting | In real time |
| High speed overshoot ALC fault | In real time |
| Cross stream | In real time |
| Excess temperature | Non real-time |
| Under-voltage | Non real-time |
Table 1
For example, when the type broken down of power transmitter is standing wave mismatch, controls protection module 4 and this fault must be carried out real-time response. Such as: when standing wave mismatch occurs, control protection module and control power transmitter closedown, so that power transmitter is protected. In the embodiment of the present application, standing wave mismatch is analyzed judging by message processing module 44, then message processing module 44 is when monitoring power transmitter generation standing wave mismatch, it is also possible to interrupt mode notifier processes device 41, and close power transmitter. When the type broken down of power transmitter is under-voltage, controls protection module 4 and can provide alarm prompt or carry out delay protection, and this fault is not carried out real-time response.
It follows that the preposition solid-state amplification module 1 in the embodiment of the present application is illustrated. As it is shown in figure 1, be the structural representation of power transmitter. Wherein, preposition solid-state amplification module 1 includes directional coupler and preselector 12.
Concrete, the straight-through end of directional coupler is connected with preselector 12, and coupled end is connected with controlling protection module 4. Directional coupler generates coupled end input signal and straight-through end input signal for the input signal according to power transmitter. After coupled end input signal input controls protection module 4; under the detection in real time of message processing module 44; input signal is first detected; judge that the frequency of input signal is whether in the working band of power transmitter; and when the frequency of input signal is not in the working band of power transmitter, controls preselector 12 and be filtered processing to input signal. In actual applications, preselector 12 can include frequency-division section band filter, for filtering the out of band signal outside bandwidth of operation.
In the embodiment of the present application, preposition solid-state amplification module 1 also includes amplifying sublink 13, switchs 14, and the first end of described switch is connected with described preselector 12 and described message processing module 44, and the other end of described switch 14 is connected with described amplification sublink 13; Input stimulus detection module 432 generates and exports the input voltage corresponding with described coupled end input signal for inputting signal according to described coupled end. Described message processing module 44 is used for determining that described input voltage is whether in predetermined voltage range; Wherein, when described input voltage is in described predetermined voltage range, control described switch 14 in the conduction state, and control described preselector 12 to described straight-through end input signal be filtered process.
Owing to travelling-wave tube is very sensitive to RF input power overload. If input voltage exceeds travelling-wave tube safety range, can cause that travelling-wave tube damages, therefore, the embodiment of the present application need input voltage is detected. Concrete, as shown in Figure 4, for input stimulus and the output detection schematic diagram of power transmitter. Input at power amplifier connects directional coupler and input power is sampled. Input stimulus detection module 432 includes cymoscope, and utilizes the power that coupled end is inputted signal by cymoscope to carry out detection, it is thus achieved that input, with described coupled end, the input voltage that signal is corresponding. Then, message processing module 44 is according to input voltage, judge that this input voltage is whether in the predetermined voltage range of power transmitter, if input voltage is in predetermined voltage range, then control preselector 12 to be filtered the input signal of the straight-through end of directional coupler processing, and it is in the conduction state to control switch 14 so that the input signal processed by preselector 12 deactivates the amplification link of power transmitter.
In such scheme, by input signal is prejudged, it is possible to prevent the amplifier chain path loss that unexpected signal input causes power transmitter bad. In the embodiment of the present application, in order to prevent voltage standing wave ratio mismatch from causing that travelling-wave tube damages, information detecting module 43 also includes standing wave detection of mismatch module 431. As shown in Figure 4, standing wave detection of mismatch module 431 includes forward cymoscope and reverse cymoscope. Forward cymoscope, for the output signal of outcoupling module 3 is carried out detection, generates the forward output voltage corresponding with described output signal; Reverse cymoscope carries out detection for the reflected signal of the discharger that power transmitter connects, and generates the reverse output voltage corresponding with reflected signal. In the embodiment of the present application, if the outcoupling module of power transmitter 3 is connected with antenna, then forward output represents the power from power transmitter output to antenna, i.e. incident power, forward output voltage is the rectified signal of forward power. Backward power represents the power from antenna end reflection, i.e. reflected wave powers, reverse output voltage is the rectified signal of backward power.
Then, forward output voltage and reverse output voltage are by amplifier and A/D conversion process, convert analog voltage to, and determined voltage standing wave ratio by message processing module 44 according to forward output voltage and reverse output electricity, and when described voltage standing wave ratio is within the scope of default standing-wave ratio, described output signal is decayed. When described voltage standing wave ratio is more than or equal to default standing-wave ratio maximum, close described power transmitter.
It follows that the calculation of the voltage standing wave ratio in the embodiment of the present application is illustrated.
As shown in Figure 4, Po is output, and namely power transmitter output is to the power of antenna, also referred to as incident power; Pf is the sample-power of output; Pr is backward power, also referred to as reflected wave powers. The degree of coupling of the directional coupler in outcoupling module 3 is C, and directivity is D, and the attenuation of forward cymoscope branch road and the attenuator on reverse cymoscope branch road is A, according to classical theoretical calculation formula, has:
Pf=Po C, Pr=Po C D (1)
Forward detection output voltage Vf and reverse detection output voltage Vr is respectively as follows:
The difference of forward and reverse detecting circuit is:
Definition Γ according to reflection coefficient2=Pr/Pf and standing wave computing formula
VSWR=(1+ | Γ |)/(1-| Γ |) (5)
Finally obtaining standing wave computing formula is:
When the voltage standing wave ratio of power transmitter is less than or equal to 3, power transmitter normal operation; When output standing wave is between 3 and 6, it is necessary to decay 10dB by output; When voltage standing wave ratio is more than 6, close power transmitter, so that power transmitter to be protected. Shown that, when VSWR is equal to 3, when corresponding reflection coefficient 1/2, VSWR is equal to 6, corresponding reflection coefficient is 5/7 by formula (5); The value of voltage standing wave ratio is substituted in (6) formula, and suppose that the directivity D of directional coupler is 20dB, it is possible to obtaining voltage standing wave ratio when being 3, the difference of forward and reverse detecting circuit is 0.29, when voltage standing wave ratio is 6, the difference of forward and reverse detecting circuit is 0.14.
If by after forward cymoscope and the gain of latter linked operational amplifier of reverse cymoscope be 10, then Vout=10 × Δ Vd. Therefore, in specific implementation process, it is possible to set two threshold values respectively 1.4 and 2.9, then when the Vout of the output of operational amplifier is compared with two threshold values set, if Vout>=2.9, then power transmitter normal operation; If 1.4<Vout<when 2.9, it is possible to control to protect module 4 to control attenuator and make output decay 10dB; If Vout≤1.4, then control to close power transmitter.
Optionally, in order to protect the safety of travelling-wave tube, except the output of outcoupling module 3 and voltage standing wave ratio are monitored, outcoupling module 3 includes: circulator 31, is connected with described travelling-wave tube amplification module 2; Power absorption load 32, is connected with described circulator 31. Circulator 31 act as rfpa output signal and reflected signal, described power absorption load 32 is used for absorbing described reflected signal, thus avoiding voltage standing wave ratio and reflection power excessive, causes that travelling-wave tube damages.
In the embodiment of the present application, owing to travelling-wave tube has certain safe operating voltage range, when the supply voltage of power module exceedes this safety range, sparking in travelling-wave tube will be caused, cause that travelling-wave tube damages. And if cathode fall is too low, travelling-wave tube will appear from vibration, and electric current also increases as, and when travelling-wave tube oscillation energy reaches certain value, also can damage travelling-wave tube.
Therefore, in order to protect travelling-wave tube, the supply voltage of the power module of travelling-wave tube can be detected in real time by information detecting module 43 by voltage detection module 434, and the detection data of voltage detection module 434 are read out by message processing module 44. Then, it is determined that whether the supply voltage of power module exceedes the supply voltage threshold value of described travelling-wave tube amplification module 2; Wherein, when described supply voltage exceedes described supply voltage threshold value, power off module for power supply, to prevent travelling-wave tube to be damaged. Optionally, in order to the Body-current preventing the helix of travelling-wave tube is excessive, causing that the high-frequency structure of travelling-wave tube damages, in the embodiment of the present application, information detecting module 43 also includes current detection module 433, for detecting the Body-current of described travelling tube helical line; The detection data of current detection module 433 are read out by message processing module 44, and then, message processing module 44 determines whether described Body-current exceedes the current threshold of described travelling tube helical line; And when described Body-current exceedes described current threshold, close described power transmitter.
Optionally, when the ambient temperature residing for travelling-wave tube is beyond normal range of operation, power transmitter cisco unity malfunction can be caused, even damage power transmitter. Therefore, temperature when power transmitter is worked need to be monitored in real time.
Concrete, information detecting module 43 also includes temperature detecting module 430, for detecting the operating temperature of described travelling-wave tube amplification module 2; The detection data of temperature detecting module 430 are read out by message processing module 44, and then, described message processing module 44 is for determining whether described operating temperature exceedes the temperature threshold values of travelling-wave tube amplification module 2; And when described operating temperature exceedes described temperature threshold values, close described power transmitter.
Optionally, temperature detecting module 430 is except detecting the temperature of travelling-wave tube, it is also possible to the cold drawing of power transmitter and the temperature of high voltage power supply are detected.
In the embodiment of the present application, information detecting module 43 mainly includes the devices such as sensor network, multiplex arithmetric amplifier, multi-channel a/d converter and collectively constitutes. For example, temperature detecting module 430 can adopt chip temperature, is pasted on the device needing detection temperature information. As: chip temperature is pasted on cold drawing, to detect cold plate temperature. Then, message processing module 44 it is analyzed judging to temperature information, and power transmitter is controlled. Again such as: current detection module 433 can adopt Hall effect device to detect, power sampling can be sampled by power detection chip, and the application is without limitation. It follows that the auto level control principle in the embodiment of the present application is illustrated.
Concrete, ALC module 42 is made up of high-speed a/d converter, high speed processing chip and high-speed d/a transducer etc., based on pre-decay and change stepping approximate algorithm, realized without overshoot by preset big decay, and compare process by the power detection signal of real-time monitoring output and preset output power value, produce suitable control magnitude of voltage control attenuator through algorithm process and realize power control.
Generally require within 100 μ s owing to ALC starts to control the time. Traditional approximate algorithm is limited by the iterative process flow of AD/DA conversion, and a circulation is accomplished by close to 10 μ s, often longer on response time, if directly accelerating, likely causes control vibration. In the embodiment of the present application, change stepping approximate algorithm is adopted to reach power transmitter power demand value. This algorithm is based on the characteristic curve of cymoscope, in approximately linear interval in characteristic curve, the substantially value of the attenuation needing adjustment is first directly calculated in conjunction with pad value, significantly approach power demand, and finely tune by a small margin in the inelastic region on this basis or in characteristic curve to reach power demand value. Walk approximate algorithm by above-mentioned change, not only realized starting to control without overshoot at a high speed but also will not produce to vibrate.
Optionally, in the embodiment of the present application, controlling protection module 4 can also to High Precision Automatic gain (AGC) adjustable attenuation of the power of preposition solid-state amplification module 1. Concrete, control the actual gain of the detecting circuit computing system that protection module 4 reads according to the cymoscope input from power transmitter and outfan, and by actual gain compared with the gain requirement that user sets. The stepping that the attenuator in preposition solid-state amplification module 1 is adjusted is determined according to comparing the gain difference obtained, and according to the stepping increase determined or the attenuation reducing attenuator, and then the actual gain of power transmitter is controlled.
In the embodiment of the present application, power transmitter also includes: communication interface and memorizer, is connected with processor 41, and the data that processor 41 and message processing module 44 monitor can be uploaded to terminal and display by communication interface. For example, by the output of power transmitter, voltage standing wave ratio, the information such as operating temperature and running voltage is uploaded to terminal and displays.
In the embodiment of the present application, power transmitter also includes: fault warning module, is connected with processor 41, has occurred and that rear outputting alarm signal for fault.
By the one or more technical schemes in the embodiment of the present application, it is possible to achieve following one or more technique effects:
In the embodiment of the present application, the control protection module of power transmitter includes processor and message processing module, and processor, for the output according to described outcoupling module and preset output power value, generates and controls magnitude of voltage; Input signal, for the adjustable attenuator in described preposition solid-state amplification module being controlled according to described control magnitude of voltage, is carried out Attenuation adjustable by auto level control ALC module; And message processing module is connected with multiple information detecting module, and the running parameter of the power transmitter that multiple information detecting module detect is processed.
Visible, in the scheme in the embodiment of the present application, processor is mainly for the treatment of the information of ALC module, and then power transmitter is carried out auto level control; The running parameter that multiple information detecting module detect is not take up the resource of processor; processed by message processing module; make to control protection module and can quickly carry out auto level control and running parameter process simultaneously; thus solving in prior art; with PLC device or singlechip microcontroller be core monitoring technology can not meet TWT transmitter work time the technical problem of requirement of real-time; achieve the processing speed accelerating to control protection module, to meet the technique effect of requirement of real-time when TWT transmitter works.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment. So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a power transmitter, it is characterised in that including:
Preposition solid-state amplification module;
Travelling-wave tube amplification module, is connected with described preposition solid-state amplification module;
Outcoupling module, is connected with described travelling-wave tube amplification module;
Control protection module, including:
Processor, is connected with described outcoupling module, for the output according to described outcoupling module and preset output power value, generates and controls magnitude of voltage;
Auto level control ALC module, with described processor, described preposition solid-state amplification module and described outcoupling module connect, and input signal, for the adjustable attenuator in described preposition solid-state amplification module being controlled according to described control magnitude of voltage, is carried out Attenuation adjustable by described ALC module;
Multiple information detecting module, respectively with described preposition solid-state amplification module, described travelling-wave tube amplification module and described outcoupling module connect, and described information detecting module is used for detecting described preposition solid-state amplification module, the running parameter of described travelling-wave tube amplification module and described outcoupling module;
Message processing module, is connected with the plurality of information detecting module, is used for processing described running parameter, and controls described power transmitter and be in the duty corresponding with described running parameter.
2. power transmitter as claimed in claim 1, it is characterised in that the plurality of information detecting module includes temperature detecting module, standing wave detection of mismatch module, input stimulus detection module, current detection module and one or more in voltage detection module.
3. power transmitter as claimed in claim 2, it is characterised in that described preposition solid-state amplification module also includes:
Directional coupler, for generating coupled end input signal and straight-through end input signal according to described input signal;
Preselector, is connected with described directional coupler, and described preselector is filtered processing for described straight-through end inputs signal.
4. power transmitter as claimed in claim 3, it is characterised in that described preposition solid-state amplification module includes:
Amplify sublink;
Switch, the first end of described switch is connected with described preselector and described message processing module, and the other end of described switch is connected with described amplification sublink;
Described input stimulus detection module generates and exports the input voltage corresponding with described coupled end input signal for inputting signal according to described coupled end;
Described message processing module is used for determining that described input voltage is whether in predetermined voltage range; Wherein, when described input voltage is in described predetermined voltage range, control described switch in the conduction state, and control described preselector to described straight-through end input signal be filtered process.
5. power transmitter as claimed in claim 2, it is characterized in that, described standing wave detection of mismatch module is used for: generates the forward output voltage corresponding with described output signal according to the output signal of described outcoupling module, and generates the reverse output voltage corresponding with described reflected signal according to the reflected signal of the discharger that described power transmitter connects;
Described message processing module is for determining voltage standing wave ratio according to described forward output voltage and described reverse output voltage; Wherein, when described voltage standing wave ratio is within the scope of default standing-wave ratio, described output signal is decayed, when described voltage standing wave ratio is more than or equal to default standing-wave ratio maximum, close described power transmitter.
6. power transmitter as claimed in claim 5, it is characterised in that described outcoupling module includes:
Circulator, is connected with described travelling-wave tube amplification module;
Power absorption load, is connected with described circulator, and described power absorption load is used for absorbing described reflected signal.
7. power transmitter as claimed in claim 2, it is characterised in that described power transmitter also includes:
Power module, is connected with described travelling-wave tube amplification module;
Described voltage detection module is for detecting the supply voltage of described power module;
Described message processing module is for determining whether described supply voltage exceedes the supply voltage threshold value of described travelling-wave tube amplification module; Wherein, when described supply voltage exceedes described supply voltage threshold value, control described power module and stop described travelling-wave tube amplification module is powered.
8. power transmitter as claimed in claim 2, it is characterised in that described current detection module is for detecting the Body-current of described travelling tube helical line;
Described message processing module is for determining whether described Body-current exceedes the current threshold of described travelling tube helical line; Wherein, when described Body-current exceedes described current threshold, described power transmitter is closed.
9. power transmitter as claimed in claim 2, it is characterised in that described temperature detecting module is for detecting the operating temperature of described travelling-wave tube amplification module;
Described message processing module is for determining whether described operating temperature exceedes the temperature threshold values of travelling-wave tube amplification module; Wherein, when described operating temperature exceedes described temperature threshold values, described power transmitter is closed.
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| CN201510960750.8A CN105676189A (en) | 2015-12-18 | 2015-12-18 | Power transmitter |
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| CN110176907A (en) * | 2019-06-26 | 2019-08-27 | 深圳市博威射频科技有限公司 | RF power amplification protects circuit and its control method |
| CN110380743A (en) * | 2019-07-19 | 2019-10-25 | 同方电子科技有限公司 | A kind of high-precision short-wave transmitter power ALC control method |
| CN110350989A (en) * | 2019-07-26 | 2019-10-18 | 中国电子科技集团公司第四十一研究所 | A kind of detection and calibration circuit, radiofrequency signal generating device and method |
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