CN110460318A - A kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation - Google Patents
A kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation Download PDFInfo
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- CN110460318A CN110460318A CN201910591335.8A CN201910591335A CN110460318A CN 110460318 A CN110460318 A CN 110460318A CN 201910591335 A CN201910591335 A CN 201910591335A CN 110460318 A CN110460318 A CN 110460318A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
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Abstract
The present invention relates to a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation, including solid-state signal source, coaxial power splitter, the first RF cable, the second power amplifier, the second circulator, the second magnetron, combiner, load, the second RF cable, the first power amplifier, first annular device, the first magnetron and coupler, the output end of the solid-state signal source is connected with coaxial power splitter, and the end of second power amplifier is connected with the second circulator.The novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation eliminates phase discriminator, phase shifter and central control system in conventional synthesis mode and greatly reduces system cost to simplify system structure；Main devices in system are waveguide device, coaxial transmission line etc., and strong antijamming capability is reliable and stable, and service life greatly improves, and make that whole power synthetic system structure is simple, overall cost is very low and system is stable and reliable in work.
Description
Technical field
The present invention relates to microwave source technical field, specially a kind of novel injection-locked magnetron function based on frequency sweep phase modulation
Rate synthesis system.
Background technique
Magnetron is because it is low with price, high-efficient, power is high, the advantages such as small in size, light-weight have been widely used for
The fields such as chemical industry, metallurgy, food, drying.The fast development of industrial technology results in the urgent need to high-power microwave source, so
And the microwave output power of single magnetron is limited, it is difficult to meet the needs of industrial application.And power combing is to solve the problems, such as this
A kind of effective scheme.
It realizes efficient microwave Coherent Power synthesis, needs the output frequency in each microwave magnetron source consistent, phase
It is identical.However, free oscillation magnetron there are output spectrums it is unstable, consistency is poor the problems such as, it is difficult to realize efficient phase
Dry microwave power synthesis.And injection locking technique by magnetron inject a high stability small signal, can be by magnetic control
The output frequency of pipe is locked in the frequency of Injection Signal.Therefore, injection locking technique is widely used in high-efficiency magnetic keyholed back plate phase
In dry power synthetic system.
Existing technology is in the output that ensure that each microwave magnetron source in power synthetic system by injection locking technique
After frequency is consistent, it is also necessary to the phase difference between each magnetron output signal is adjusted, to guarantee in the combining each magnetron in port
The phase of output signal is consistent, to realize efficient microwave power synthesis.And in current power synthetic system, phase
Adjusting usually realized by the phase shifter in Injection Signal；Need by phase discriminator etc. to the output signal of two-way magnetron into
Row detects and measures the phase difference of two-way magnetron output signal, then by phase difference feedback to central control system and calculates
The phase value to be adjusted out, and by the phase of phase shifter adjusting Injection Signal, finally realize two-way injection-locked magnetron
Output phase is consistent, to realize efficient Coherent Power synthesis.As can be seen that injection-locked magnetron in existing technology
The electronic devices such as power combining schemes system complex, at high cost and phase discriminator and phase shifter are in the complicated electromagnetism ring such as factory floor
Vulnerable to interference under border, stability is poor.In view of the above defect existing in the prior art, it is necessary to be further improved, make it
More for practicability, it can just meet actual use situation.
Summary of the invention
The purpose of the present invention is to provide a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation,
With solve it is mentioned above in the background art it is existing enter lock magnetron power combining schemes system complex, it is at high cost and reflect
The electronic devices such as phase device and phase shifter are under the complex electromagnetic environments such as factory floor vulnerable to interference, the problem of stability difference.
To achieve the above object, the invention provides the following technical scheme: a kind of novel injection locking based on frequency sweep phase modulation
Magnetron power synthetic system, including solid-state signal source, coaxial power splitter, the first RF cable, the second power amplifier, second
Circulator, the second magnetron, combiner, load, the second RF cable, the first power amplifier, first annular device, the first magnetic control
Pipe and coupler, the output end of the solid-state signal source are connected with coaxial power splitter, the output end connection of the coaxial power splitter
There are the first RF cable and the second RF cable, wherein；
The end of first RF cable is connected with the second power amplifier, the output end of second power amplifier
It is connected with the second circulator, one end of second circulator is connected with the second magnetron, the other end of second circulator
It is connected with one end of combiner；
The input terminal of first power amplifier is connected with the second RF cable, the output of first power amplifier
End is connected with first annular device, and one end of the first annular device is connected with combiner.
Preferably, length of the length of first RF cable less than the second RF cable.
Preferably, coupler is connected between the combiner and load, and coupler is used as test.
Preferably, the combiner includes but is not limited to E-T, H-T, evil spirit T.
It compared with prior art, the beneficial effects of the present invention are: should the novel injection-locked magnetron based on frequency sweep phase modulation
Power synthetic system is provided with that two different radio-frequency transmission lines of physical length are separately connected the output end of power splitter and power is put
The input terminal of big device, since the length of the first RF cable and the length difference of the second RF cable are larger, by defeated to signal source
Signal carries out frequency sweep out, and traversal of the phase difference caused by two transmission lines in [0,2 π] range may be implemented；Specifically, i.e.,
During frequency sweep, although the physical length of two transmission lines is constant, the electrical length of transmission line with the variation of frequency and
Variation, changes so as to cause the phase difference of Injection Signal with the variation of frequency.When transmission line phase difference in one cycle
After traversal, necessarily there is a phase difference that can make the same phase of the output signal of two injection-locked magnetrons, to realize efficiently micro-
Wave power synthesis, while phase discriminator, phase shifter and central control system in conventional synthesis mode are eliminated, to simplify
System structure greatly reduces system cost；Meanwhile the main devices in system are waveguide device, coaxial transmission line etc., are resisted dry
It is strong to disturb ability, it is reliable and stable, and service life greatly improves, make that whole power synthetic system structure is simple, overall cost is non-
Normal low and system is stable and reliable in work.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation of the present invention
Figure；
Fig. 2 is a kind of test device of the novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation of the present invention
Structural schematic diagram.
In figure: 1, solid-state signal source, 2, coaxial power splitter, the 3, first RF cable, the 4, second power amplifier, 5, second
Circulator, the 6, second magnetron, 7, combiner, 8, load, the 9, second RF cable, the 10, first power amplifier, 11, first
Circulator, the 12, first magnetron, 13, coupler.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of novel injection-locked magnetron based on frequency sweep phase modulation
Power synthetic system, including solid-state signal source 1, coaxial power splitter 2, the first RF cable 3, the second power amplifier 4, the second ring
Shape device 5, the second magnetron 6, combiner 7, load the 8, second RF cable 9, the first power amplifier 10, first annular device 11,
First magnetron 12 and coupler 13, it is characterised in that: the output end of the solid-state signal source 1 is connected with coaxial power splitter 2, institute
The output end for stating coaxial power splitter 2 is connected with the first RF cable 3 and the second RF cable 4, wherein；
The end of first RF cable 3 is connected with the second power amplifier 4, second power amplifier 4 it is defeated
Outlet is connected with the second circulator 5, and one end of second circulator 5 is connected with the second magnetron 6, second circulator 5
The other end be connected with one end of combiner 7；
The input of first power amplifier 10 is connected with the second RF cable 9, first power amplifier 10
Output end is connected with first annular device 11, and one end of the first annular device 11 is connected with combiner 7.
Further, length of the length of first RF cable 3 less than the second RF cable 9.
Two different radio-frequency transmission lines of physical length are separately connected output end and the first power amplification of coaxial power splitter 2
The input terminal of device 10 and the second power amplifier 4 realizes that two transmission lines draw by carrying out frequency sweep to signal source output signal
Traversal of the phase difference risen in [0,2 π] range；Specifically, i.e., during frequency sweep, although the physics of two transmission lines is long
Spend constant, but the electrical length of transmission line really changes with the variation of frequency, so as to cause Injection Signal phase difference with frequency
The variation of rate and change.After transmission line phase difference traverses in one cycle, necessarily there is a phase difference that can make two injections
The same phase of output signal of magnetron is locked, to realize that efficiently microwave power synthesizes.
Referring to Fig.2, being connected with coupler 13 between the combiner 7 and load 8.
It tests with realizing output power, lock state and combined coefficient, in adjustment signal source during output frequency, leads to
On the coupler for be connected to orientation 13 power meter is crossed, the microwave output power after synthesis can be tested out, and then calculate conjunction
At efficiency；And the frequency recorder by being connected on the coupler 13 of orientation, whether detection frequency spectrum is single-frequency, that is, can determine that note
Enter whether magnetron locks.
Further, microwave magnetron source includes but is not limited to 2.45GHz, 5.8GHz, 915MHz microwave magnetron source.
Further, microwave source includes but is not limited to magnetron, is also possible to other vacuum microwaves such as klystron, travelling-wave tubes
Device, or it is solid state microwave sources.
Further, microwave source includes continuous-type microwave source and pulse microwave source.
Further, combiner 7 includes but is not limited to E-T, H-T, evil spirit T.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (4)
1. a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation, including it is solid-state signal source (1), coaxial
Power splitter (2), the first RF cable (3), the second power amplifier (4), the second circulator (5), the second magnetron (6), combining
Device (7), load (8), the second RF cable (9), the first power amplifier (10), first annular device (11), the first magnetron
(12) and coupler (13), it is characterised in that: the output end of the solid-state signal source (1) is connected with coaxial power splitter (2), described
The output end of coaxial power splitter (2) is connected with the first RF cable (3) and the second RF cable (9), wherein；
The end of first RF cable (3) is connected with the second power amplifier (4), second power amplifier (4)
Output end is connected with the second circulator (5), and one end of second circulator (5) is connected with the second magnetron (6), and described second
The other end of circulator (5) is connected with one end of combiner (7)；
The input terminal of first power amplifier (10) is connected with the second RF cable (9), first power amplifier
(10) output end is connected with first annular device (11), and one end of the first annular device (11) is connected with combiner (7).
2. a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation according to claim 1,
It is characterized in that: length of the length of first RF cable (3) less than the second RF cable (9).
3. a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation according to claim 1,
It is characterized in that: being connected with coupler (13) between the combiner (7) and load (8), and coupler (13) is used as test.
4. a kind of novel injection-locked magnetron power synthetic system based on frequency sweep phase modulation according to claim 1,
Be characterized in that: the combiner includes but is not limited to E-T, H-T, evil spirit T.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116014393A (en) * | 2022-12-08 | 2023-04-25 | 中国电子科技集团公司第十研究所 | Multichannel magnetron frequency control power synthesis microwave source system |
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| CN103208406A (en) * | 2013-04-02 | 2013-07-17 | 四川大学 | Artificial intelligent phase modulation injection locking continuous wave magnetron microwave source |
| US20160322692A1 (en) * | 2015-03-26 | 2016-11-03 | E2V Technologies (Uk) Limited | Combining arrangement |
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| CN102341962A (en) * | 2010-01-05 | 2012-02-01 | 索尼公司 | Antenna device and communications device |
| CN103208406A (en) * | 2013-04-02 | 2013-07-17 | 四川大学 | Artificial intelligent phase modulation injection locking continuous wave magnetron microwave source |
| US20160322692A1 (en) * | 2015-03-26 | 2016-11-03 | E2V Technologies (Uk) Limited | Combining arrangement |
| CN106645921A (en) * | 2017-01-24 | 2017-05-10 | 东南大学 | Direct type millimeter wave signal detector for silicon-based gap coupling type T-shaped knot |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114360989B (en) * | 2021-12-27 | 2023-06-16 | 四川大学 | Magnetron automatic phase modulation device, system and method based on injection frequency locking |
| CN116014393A (en) * | 2022-12-08 | 2023-04-25 | 中国电子科技集团公司第十研究所 | Multichannel magnetron frequency control power synthesis microwave source system |
| CN116014393B (en) * | 2022-12-08 | 2024-04-19 | 中国电子科技集团公司第十研究所 | Multichannel magnetron frequency control power synthesis microwave source system |
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