CN103208406A - Artificial intelligent phase modulation injection locking continuous wave magnetron microwave source - Google Patents
Artificial intelligent phase modulation injection locking continuous wave magnetron microwave source Download PDFInfo
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Abstract
The invention relates to a microwave irradiation source and discloses an artificial intelligent phase modulation injection locking continuous wave magnetron microwave source. According to the technical scheme, the artificial intelligent phase modulation injection locking continuous wave magnetron microwave source comprises a signal source, a magnetron, a circulator, a coupler, a mixer, a filter and a phase discriminator; an injection signal output by the signal source is injected into the magnetron through the circulator; the frequency of a power signal output by the magnet is adjusted; the power signal enters the coupler through the circulator; mixing signals are generated by a part of signals which are output by the mixer through the mixer; the mixing signals are input into the phase discriminator through the filter; the output end of the phase discriminator is connected with the signal source; and based on a leaning algorithm of artificial intelligence, the frequency and phase of the injection signals which are output by the signal source are controlled. By the artificial intelligent phase modulation injection locking continuous wave magnetron microwave source, the frequency and the phase stability of the microwaves which are output by the magnetron are improved, and the requirement of coherent combination is met; and the artificial intelligent phase modulation injection locking continuous wave magnetron microwave source is particularly suitable for the application field of microwave energy transmission.
Description
Technical field
The present invention relates to microwave radiation source, particularly utilize independent signal source microwave to inject magnetron, carry out the microwave source of frequency locking phase modulation (frequency locking and phase place adjustment).Be mainly used in the microwave Coherent Power synthetic technology in microwave energy transfer field.
Background technology
In high power technical field of microwave application such as microwave energy transfer, usually need to obtain high as far as possible microwave power.Because the power output of single microwave source is limited by the power capacity of device own, adopting the microwave power synthetic technology is the effective way that solves this difficult problem.In existing microwave power synthetic technology, be divided into the synthetic and non-coherent power synthetic technology two big classes of Coherent Power.Microwave Coherent Power synthetic technology, the tranmitting frequency of each microwave power source, the necessary certain condition of phase place in the requirement system, usually require the microwave tranmitting frequency of each microwave power source identical with phase place, this just needs to use technology such as powerful microlock, phase shift.Microwave generator commonly used mainly contains solid state device and electric vacuum tube two big classes.Obtain the method that HIGH-POWERED MICROWAVES mainly adopts solid state device to synthesize step by step at present.Owing to be subjected to the restriction on the low side of single power from solid-state device, the multistage synthetic microwave output power of solid state device only reaches a kilowatt magnitude.And special dimensions such as microwave current energy transmission usually need the microwave source of megawatt magnitude.Consider that life-span, cost etc. are all multifactor, U.S. scientist at first proposes to adopt cheap commercial continuous wave magnetron (abbreviating magnetron as) to realize synthesizing in microwave energy transfer.In order to improve combined coefficient, often wish to satisfy the relevant synthetic requirement of microwave.
Magnetron is a kind of complicated magnitude-phase characteristics microwave device that has.Though that commercial magnetron has is cheap, the single tube power output is big, the life-span long, merit matter is than advantages of higher, have that spectral range is wideer, the shortcoming of phase-unstable.Its operating frequency in a big way change at random (be the magnetron of 2450MHz and 5800MHz as centre frequency, its frequency range is respectively 2450 ± 25MHz and 5800 ± 30MHz) usually, and phase place is change at random in 0～2 π scope also.Therefore must increase peripheral auxiliary system to commercial magnetron transforms and controls and realize that could satisfy a plurality of microwave magnetrons source behind the frequency locking phase modulation carries out the synthetic requirement of Coherent Power, phase control magnetron (PCM) occurred thereupon.Phase control magnetron implementation method mainly contains two kinds at present, a kind of is employing frequency respectively and two feedback loops of phase place that proposed by U.S. scientist Brown, carries out the method for frequency locking phase modulation by " buck boost " coil control magnetron external magnetic field that increases; Another kind is that Kyoto Univ Japan researchs and proposes, and changes the method that the anode of magnetron electric current reaches the frequency locking phase modulation by the control high voltage source.These two kinds of methods all realize the frequency locking phase modulation by changing the magnetron running parameter, all relate to the transformation of this body structure of magnetron, and complex structure is realized difficulty.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source, and the method that adopts power to inject is carried out microwave to commercial magnetron and injected the frequency locking phase modulation.
The present invention solve the technical problem, and the technical scheme of employing is that a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source comprises signal source, magnetron, circulator, coupler, frequency mixer, filter and phase discriminator; The injection signal of described signal source output injects magnetron by circulator, adjust the power signal frequency of magnetron output, described power signal enters coupler by circulator, a part of signal of described coupler output produces mixed frequency signal by frequency mixer, described mixed frequency signal is through filter input phase discriminator, described phase discriminator output is connected with signal source, based on the learning algorithm of artificial intelligence, and injection signal frequency and the phase place of the output of control signal source.
Technical scheme of the present invention, use the high stability signal source to produce frequency near the injection signal of magnetron natural resonance frequency, this signal directly is injected in the magnetron through circulator, and when the injection signal amplitude reached a great deal of grade, the magnetron frequency of oscillation was synchronous with the injection signal phase.In frequency-locking range, the output frequency of magnetron is same value with injecting signal, and the output frequency of magnetron has been realized by the method for injecting signal the general commercial magnetron being carried out the control of frequency locking phase modulation directly by injecting signal frequency control.
Owing to inject signal through circulator, magnetron and directional coupler delayed impact at different levels, be subjected to all multifactor impacts such as dc high-voltage source, anode current, filament voltage, magnetron temperature in the magnetron work in addition, still there is dynamic change in the power signal characterisitic parameter of its output (frequency, phase place) in locking, must set up feedback loop and dynamically adjust its deviation constantly, and have the nonlinear change process of a phase place because of above-mentioned reason.For this reason, phase discriminator of the present invention has adopted the control technology field learning algorithm based on artificial intelligence commonly used, has further improved the precision of frequency locking phase modulation.
Feedback control loop of the present invention takes out a part of signal from coupler output, after handling by frequency mixer, filter and phase discriminator, and injection signal frequency and the phase place of the output of control signal source.The concept of mixing referred in the processing of high-power microwave source during the present invention handled signal of communication, the power signal of coupler output is taken out a part, with standard signal input mixer together, get the difference frequency output signal after its mixing, by phase discriminator the phase place of this signal is carried out digital sample then and handle, and then realization is to the control of power signal.Above-mentioned standard signal can be produced by a standard frequency source, is perhaps provided by signal source.
Further, be connected with power amplifier between described signal source and the circulator, be used for amplifying and inject signal to setting power.
Between signal source and circulator, increase power amplifier, can amplify the injection signal power of its output, remedy signal source output signal power defect of insufficient, to satisfy the requirement of magnetron frequency locking.
Concrete, high direct voltage ripple＜1% of described magnetron.
Adopt the DC high-voltage power supply of low ripple, its ripple＜1% can reduce the noise of power supply own to the harmful effect of performance of magnetron, improves the precision of frequency locking phase modulation.
Recommend, described a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source is used for the transmission of Space Microwave energy.
The transmission of Space Microwave energy often needs powerful microwave transmission system, adopts microwave source of the present invention can form relevant microwave power synthesis system, thereby obtains the HIGH-POWERED MICROWAVES emitter, satisfies the high-power requirement of Space Microwave energy transmission.
The invention has the beneficial effects as follows, use the high stability signal source by the method for injecting signal the general commercial magnetron to be injected the frequency locking phase modulation; Adopt feedback loop to realize the mutually steady and phase shift function of magnetron by the phase control to the injection signal of high stability signal source output.The present invention has improved frequency and the phase stability of the output microwave of magnetron, can satisfy relevant synthetic requirement, is particularly suitable for the application of microwave transmission energy.
Description of drawings
Fig. 1 is the example structure schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The present invention adopts microwave to inject the frequency locking technology, before the magnetron starting of oscillation, inject the outside reference frequency microwave signal (the present invention is called the injection signal) of a low level high stability earlier, its frequency is close to the natural resonance frequency (or being called centre frequency) of magnetron.This signal directly is injected in the magnetron through circulator, when the injection signal amplitude reaches a great deal of grade, and magnetron frequency of oscillation and the Phase synchronization of injecting signal.In frequency-locking range, the output frequency of magnetron is same value with injecting signal frequency, and the output frequency of magnetron is directly by injecting signal frequency control.
Embodiment
This example is that the microwave magnetron source of 5.799GHz is that example illustrates structure of the present invention and implementation method to be operated in the C-band frequency.Accordingly, inject signal frequency=5.799GHz, magnetron centre frequency=5.8GHz, standard signal frequency=5.799GHz+100kHz.
A kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source of the present invention comprises signal source 1, power amplifier 12, circulator 2, coupler 3, magnetron 4, frequency mixer 5, filter 6 and phase discriminator 7, as shown in Figure 1.Signal source 1 watt level is about 0dBm, and the injection signal frequency of output is set at 5.799GHz.Power amplifier 12 gains are 40dB, and power output is about 10W.The injection signal of signal source 1 output injects magnetron 3 by circulator 2, adjusts the power signal frequency of magnetron output, makes it be set to 5.799GHz.The power signal of magnetron 3 outputs enters coupler 3 by circulator 2, and its major part is exported as microwave power, and a part of signal of coupler 3 outputs enters feedback loop.This routine feedback loop comprises frequency mixer 5, filter 6 and phase discriminator 7, is phase-locked loop (PLL) common in the communication technology.Frequency mixer 5 produces the mixed frequency signal that frequency is 100kHz with power signal and standard signal mixing, input phase discriminator 7 behind the outer clutter of these mixed frequency signal process filter 6 filtering bands.This routine phase discriminator 7 compares the mixed frequency signal of 100kHz and the 100kHz signal of standard based on the learning algorithm of artificial intelligence, produces a control signal and outputs to signal source 1, injection signal frequency and the phase place of 1 output of control signal source.By adjusting repeatedly, finally make the output frequency of magnetron 4 lock onto 5.799GHz, the injection signal of phase place and signal source 1 output is synchronous.
In this example, the high-voltage DC power supply of magnetron 4 is ripple less than 1% 4200V DC high-voltage power supply.Magnetron 4 is injecting the effect of playing an amplifier under the signal effect, and microwave power that will about 650W by circulator 2 outputs in the coupler 3, and finally this microwave power goes out by the loaded antenna systems radiate.
This routine microwave source frequency stability reaches 10
-8, phase stability is better than ± 2 °, the about 655W of power output, phase place adjustable extent ± 180 °, 1 ° of phase shifts stepping.This microwave source satisfies the synthetic requirement of microwave Coherent Power.
Claims (4)
1. an artificial intelligence phase modulation injection locking continuous wave magnetron microwave source comprises signal source, magnetron, circulator, coupler, frequency mixer, filter and phase discriminator; The injection signal of described signal source output injects magnetron by circulator, adjust the power signal frequency of magnetron output, described power signal enters coupler by circulator, a part of signal of described coupler output produces mixed frequency signal by frequency mixer, described mixed frequency signal is through filter input phase discriminator, described phase discriminator output is connected with signal source, based on the learning algorithm of artificial intelligence, and injection signal frequency and the phase place of the output of control signal source.
2. a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source according to claim 1 is characterized in that, is connected with power amplifier between described signal source and the circulator, is used for amplifying injecting signal to setting power.
3. a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source according to claim 1 is characterized in that high direct voltage ripple＜1% of described magnetron.
4. a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source according to claim 1 is characterized in that, described a kind of artificial intelligence phase modulation injection locking continuous wave magnetron microwave source is used for the transmission of Space Microwave energy.
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Cited By (8)
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| CN103716089A (en) * | 2013-12-26 | 2014-04-09 | 南京航空航天大学 | RF signal optical fiber phase-stabilized transmission method and system |
| CN104701117A (en) * | 2015-03-12 | 2015-06-10 | 四川大学 | Stray energy recovery injection frequency-looking magnetron microwave launching system |
| CN105974994A (en) * | 2016-04-28 | 2016-09-28 | 广东美的厨房电器制造有限公司 | Circuit and method for power output of microwave oven |
| CN110460318A (en) * | 2019-07-02 | 2019-11-15 | 四川大学 | A kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation |
| CN111770601A (en) * | 2020-01-08 | 2020-10-13 | 四川大学 | Magnetron-based frequency scanning microwave oven |
| CN111769020A (en) * | 2020-01-08 | 2020-10-13 | 四川大学 | Microwave source for frequency-locked injection |
| CN114360989A (en) * | 2021-12-27 | 2022-04-15 | 四川大学 | Magnetron automatic phase modulation device, system and method based on injection frequency locking |
| WO2023138167A1 (en) * | 2022-01-21 | 2023-07-27 | 深圳麦时科技有限公司 | Aerosol generating apparatus, control method, control apparatus, and readable storage medium |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716089A (en) * | 2013-12-26 | 2014-04-09 | 南京航空航天大学 | RF signal optical fiber phase-stabilized transmission method and system |
| CN103716089B (en) * | 2013-12-26 | 2016-04-06 | 南京航空航天大学 | A kind of radiofrequency signal stabilized fiber phase transmission method and system |
| CN104701117A (en) * | 2015-03-12 | 2015-06-10 | 四川大学 | Stray energy recovery injection frequency-looking magnetron microwave launching system |
| CN105974994A (en) * | 2016-04-28 | 2016-09-28 | 广东美的厨房电器制造有限公司 | Circuit and method for power output of microwave oven |
| CN110460318A (en) * | 2019-07-02 | 2019-11-15 | 四川大学 | A kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation |
| CN111770601A (en) * | 2020-01-08 | 2020-10-13 | 四川大学 | Magnetron-based frequency scanning microwave oven |
| CN111769020A (en) * | 2020-01-08 | 2020-10-13 | 四川大学 | Microwave source for frequency-locked injection |
| CN114360989A (en) * | 2021-12-27 | 2022-04-15 | 四川大学 | Magnetron automatic phase modulation device, system and method based on injection frequency locking |
| WO2023138167A1 (en) * | 2022-01-21 | 2023-07-27 | 深圳麦时科技有限公司 | Aerosol generating apparatus, control method, control apparatus, and readable storage medium |
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