CN114464513B - Frequency locking, phase locking and allocation structure of coaxial magnetron - Google Patents
Frequency locking, phase locking and allocation structure of coaxial magnetron Download PDFInfo
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- CN114464513B CN114464513B CN202210099184.6A CN202210099184A CN114464513B CN 114464513 B CN114464513 B CN 114464513B CN 202210099184 A CN202210099184 A CN 202210099184A CN 114464513 B CN114464513 B CN 114464513B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/005—Cooling methods or arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a frequency locking, phase locking and allocation structure of a coaxial magnetron, which comprises a hollow metal bridge and a plurality of output structures arranged on an outer cavity of the coaxial magnetron; the coaxial magnetron comprises a coaxial magnetron and is characterized in that coupling gaps are formed in the wall of an outer conductor of the coaxial magnetron, each coupling gap is connected with one output structure, and the output structures of the two coaxial magnetrons are connected through a hollow metal bridge. The invention injects energy into each other by opening a plurality of coupling gaps on the outer walls of a plurality of coaxial magnetrons and through a hollow metal bridge. Because of perfect impedance matching, the frequency locking and phase locking process does not lose energy, is beneficial to the frequency locking and phase locking of a large-scale array, has very wide application prospect, and has the potential of developing the application field of a high-power microwave source of a novel system. The high-power microwave after the phase locking is locked in the frequency mode further carries out power synthesis, and the simple structure makes its processing easy and more can effectual reduction assembly error moreover, compact structure, and the shock resistance is better.
Description
Technical Field
The invention belongs to the technical field of microwave power sources in vacuum electronic devices, and particularly relates to a frequency locking, phase locking and allocation structure of a coaxial magnetron.
Background
The microwave is widely applied to the aspects of new material manufacturing, chemical production, garbage treatment and the like as a novel energy source, and along with the optimization and development of the domestic industrial structure, the microwave is inevitably applied to more fields as a novel energy source, so that more contributions are made to the low energy consumption and pollution of China, the sustainable development of economy and social progress.
A magnetron is an electric vacuum device for generating microwave energy, and when the magnetron is operated, a direct current voltage of several hundreds volts to several tens kilovolts is applied between a cathode and an anode, and an interaction space must be arranged in a uniform direct current magnetic field parallel to a tube axis. Therefore, when the magnetron works, the direct current electric field and the direct current magnetic field in the interaction space are vertical to each other, electrons emitted by the cathode in the tube interact with the high-frequency field, and energy obtained from the constant electric field is converted into microwave energy. Since the anode of the magnetron is a resonant cavity connected end to end, only high frequency electromagnetic fields of certain discrete frequencies, called oscillation modes, can be maintained. Each mode has a specific frequency and phase velocity. The most important and most common is the pi mode, i.e. the phase shift of two adjacent cavities is 180 °. The electric field corresponding to the operating mode of the magnetron is a standing wave, and the electric field lines on the resonant cavity gap oscillate back and forth along with the oscillation of the high-frequency voltage on the anode section. Standing waves can be thought of as being made up of two oppositely directed travelling waves, one rotating clockwise in the magnetron and the other rotating counterclockwise. The traditional magnetron structure comprises a cylindrical cathode, an anode block, an energy follower, external magnetic steel, various feed leads and the like, and has the characteristics of high power, high efficiency and compact structure. In view of the characteristics of high efficiency, small volume, low cost, reliable work, convenient use and the like, the magnetron has the application range not only limited to military fields of radars, electronic countermeasures, missiles and the like, but also gradually expanded to civil fields of microwave heating, microwave biomedicine, industrial detection and the like.
The magnetron can be divided into a coaxial magnetron, a different cavity magnetron and the like according to the working principle and the structural characteristics. Through long-term practice, the magnetron with the common structure gradually develops a new mode control principle on the basis of an external coupling cavity tuning magnetron, the anode block structure of the principle consists of fan-shaped cavities applied in the common magnetron, and the cylindrical rear walls of the resonant cavities and coaxial metal cylinders with larger radius form a coaxial resonant cavity (external cavity). The anode block is the inner conductor of the coaxial chamber and the outer wall of the tube is the outer conductor of the coaxial chamber. On the rear wall of the series of small cavities of the anode block, every other cavity is axially opened with an elongated slot, which functions as a coupling of the small cavity with the coaxial cavity. From the interaction space point of view, the whole resonant cavity system (inner cavity) should resonate on the pi mode; in the coaxial cavity, the operating mode should be the TE011 mode. Generally, the inner cavity accounts for 10% of the total energy, while the outer cavity accounts for 90%. The coaxial magnetron adopts a mode control method completely different from that of the common magnetron, thereby improving the efficiency and the frequency stability and well solving the contradiction between the efficiency and the frequency stability. Compared with the common magnetron, the coaxial magnetron has the advantages of higher output power, better frequency stability, higher efficiency, longer service life and the like. Coaxial magnetrons, while relatively expensive, have a relatively low life and average hourly cost. At present, the production level of the coaxial magnetron is that the output power reaches 3 megawatts at an S wave band and 1.4 megawatts at an X wave band, but when the coaxial magnetron is applied to a higher power application scene, the output power of a single coaxial magnetron cannot support the requirement. The output power is improved, and the application range of the coaxial magnetron is widened greatly. Because of the limitation of voltage and magnetic field, the current supplied by the cathode and the heat dissipation capability of the whole system, the single coaxial magnetron has an upper output limit on the power capacity thereof, so that the output power of the single coaxial magnetron cannot meet the use requirements in certain high-power occasions. In the moment, the microwave power synthesis is carried out by utilizing a plurality of coaxial magnetrons, and the method is an effective means for expanding the power capacity of the magnetrons.
Disclosure of Invention
Aiming at the defects in the prior art, the frequency locking, phase locking and allocation structure of the coaxial magnetron provided by the invention solves the problem of low power capacity of the conventional magnetron structure.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: a frequency locking, phase locking and allocation structure of a coaxial magnetron comprises a hollow metal bridge and a plurality of output structures arranged on an outer cavity of the coaxial magnetron;
the coaxial magnetron comprises a coaxial magnetron and is characterized in that coupling gaps are formed in the wall of an outer conductor of the coaxial magnetron, each coupling gap is connected with one output structure, and the output structures of the two coaxial magnetrons are connected through a hollow metal bridge.
Furthermore, the size of the coupling gap and the size of the hollow metal bridge are designed according to the number of the coaxial magnetrons in the frequency locking, phase locking and allocation structure;
the frequency locking, phase locking and allocation structures configured for each coaxial magnetron number have corresponding coupling gap size and hollow metal bridge size, and the lengths of the coupling gap and the hollow metal bridge are determined according to the coupling degree required by the coaxial magnetron coupling, the size of exchange energy and working frequency.
The beneficial effects of the above further scheme are: the hollow metal bridge is used for connecting each magnetron to form a whole, a plurality of mutually connected magnetrons form a module through the realization of integral assembly and process, and the array of coaxial magnetrons can be formed according to the structure, so that the array has development potential and value in the field of forming the array.
Further, the output structure comprises an impedance converter, an output window sheet and a standard waveguide which are connected in sequence;
the coaxial resonant cavity, the coupling gap and the output structure of the coaxial magnetron are communicated and matched with the hollow metal bridge to form a microwave energy coupling channel.
The beneficial effects of the above further scheme are: when the coaxial magnetron with the multi-output structure works, the energy occupation ratio of the inner cavity and the outer cavity of the coaxial magnetron does not change remarkably due to the plurality of output structures, so that the inner cavity excites a pi mode, and simultaneously when the outer cavity excites a TE011 mode, energy is injected into the outer cavity of the other coaxial magnetron through the multi-open coupling slits and the hollow metal bridge connected with the multi-open coupling slits, and the signal has certain frequency and phase, can excite the TE011 mode in the injected outer cavity of the coaxial magnetron and further excite the pi mode of the inner cavity.
Further, the hollow metal bridge comprises an outer wall structure and a hollow structure inside the outer wall structure;
the two ends of the hollow structure are coupled with standard waveguides of two coaxial magnetrons.
Further, the hollow structure is a dumbbell-shaped structure.
Further, the length of the hollow metal bridge is integral multiple of the waveguide wavelength.
The beneficial effects of the above further scheme are: between the two coaxial magnetrons, the energy injection process takes place mutually between the coaxial magnetrons and forms a standing wave in the hollow metal section, so that the total energy of the coaxial magnetrons is not lost as a whole.
The invention has the beneficial effects that:
(1) The invention provides a frequency locking, phase locking and allocation structure of coaxial magnetrons, which enables microwave output signals of a plurality of coaxial magnetrons to be coherent, and the output signals of the coaxial magnetrons can be used for power synthesis.
(2) The coupling gaps are formed on the outer walls of the coaxial magnetrons, energy is injected into the coaxial magnetrons through the hollow metal bridge, energy is not lost in the frequency locking and phase locking process due to perfect impedance matching, and the frequency locking and phase locking method is very beneficial to frequency locking and phase locking of large-scale arrays, so that the application prospect of the technology is very wide, and the technology has the potential of creating the application field of a novel high-power microwave source.
(3) Based on the structure provided by the invention, the high-power microwave after frequency locking and phase locking is further subjected to power synthesis, and the structure is simple, so that the high-power microwave is easy to process, can effectively reduce assembly errors, and has compact structure and better shock resistance. Meanwhile, the structure can be used for frequency locking and phase locking of large-scale arrays and has higher production value.
(4) The invention has the advantages of simple structure, good integrity and consistency, easy processing and ensured assembly precision without any additional external device.
(5) The structure of the invention adopts an all-metal structure, and has the advantages of good heat dissipation and high power capacity.
Drawings
FIG. 1 is a cross-sectional view of a 24-cavity coaxial magnetron provided by the present invention.
Fig. 2 is a cross-sectional view of a hollow metal bridge according to the present invention.
FIG. 3 is a cross-sectional view of two 24-cavity coaxial magnetron interconnect couplings provided by the present invention.
FIG. 4 is a cross-sectional view of four 24-cavity coaxial magnetron ring-connected cross-couplings provided by the present invention.
Wherein: 1. an anode resonant cavity; 2. an anode vane; 3. a cathode; 4. an anode inner conductor; 5. an anode interaction space; 6. coupling slots; 7. a coaxial resonant cavity; 8. an outer conductor; 9. a coupling slot; 10. an impedance transformer; 11. outputting the window sheet; 12. a standard waveguide; 13. an outer wall structure; 14. and (3) a hollow structure.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined by the appended claims, and all changes that can be made by the invention using the inventive concept are intended to be protected.
Example 1:
the embodiment of the invention provides a frequency locking, phase locking and allocation structure of a coaxial magnetron, which comprises a hollow metal bridge and a plurality of output structures arranged on an outer cavity of the coaxial magnetron;
the wall of an outer conductor 8 of the coaxial magnetrons is provided with coupling gaps 9, each coupling gap 9 is connected with an output structure, and the output structures of the two coaxial magnetrons are connected through a hollow metal bridge.
The frequency-locking phase-locking structure provided by the embodiment of the invention distributes the energy output of the coaxial magnetron by redesigning the outer cavity of the coaxial magnetron in the way of the output port, and similarly, the coaxial magnetrons with multiple output ports are mutually connected and coupled by using the specially designed hollow metal bridge, so that the coaxial magnetrons become an integral circuit, and the purpose of frequency-locking phase-locking is achieved.
In the embodiment of the present invention, as shown in fig. 1, the 24-cavity coaxial magnetron includes 24 anode resonant cavities 1, 24 anode vanes 2, a cathode 3, an anode inner conductor 4, an anode interaction space 5, a coupling slit 6 between the anode inner conductor 4 and an outer conductor 8, a coaxial resonant cavity 7, an outer conductor 8, a coupling slit 9 connecting the coaxial resonant cavity 7 and an impedance transformer 10, an output window 11, and a standard waveguide 12. The tuning piston system and the magnetic system, as well as the specific cathode structure, are not part of the present invention and will not be described further herein.
In the embodiment of the present invention, the output structure in fig. 1 includes an impedance transformer 10, an output window 11, and a standard waveguide 12, which are connected in sequence; the coaxial resonant cavity 7, the coupling gap 9 and the output structure of the coaxial magnetron are communicated and matched with the hollow metal bridge to form a microwave energy coupling channel.
In an embodiment of the invention, the hollow metal bridge as in fig. 2 comprises an outer wall structure 13 and an inner hollow structure 14; two ends of the hollow structure 14 are coupled with the standard waveguides 12 of the two coaxial magnetrons, and specifically, the hollow structure 14 is a dumbbell-shaped structure.
In the embodiment of the present invention, the hollow structure 14 is designed as a dumbbell-shaped structure to facilitate the processing, different structures have different coupling impedances, and it should be noted that the shape of the hollow structure corresponding to the principle similar to the coupling of the small slit or the small hole is within the scope of the protection claimed in the present application.
In the embodiment of the invention, the outer cavities of the coaxial magnetrons account for 90% of the energy of the whole device, so that through the specially designed hollow metal bridge, the working modes TE011 of the outer cavities of the coaxial magnetrons are closely coupled, and the pi mode of the inner cavity of each coaxial magnetron and the TE011 mode of the outer cavity are closely coupled, so that the pi modes in the inner cavities of the coaxial magnetrons are also closely coupled, and therefore, the pi modes of the inner cavities of the magnetrons and the TE011 of the outer cavities are changed into an integral standing wave field from a discrete standing wave field before no coupling, so that a plurality of electron beams can give out the energy of the coaxial magnetrons together when the energy of the pi modes in the inner cavities of the coaxial magnetrons is exchanged. The oscillation frequencies of the coaxial magnetrons are the same, and the phases of the pi mode of the inner cavity of the magnetron and the TE011 mode of the outer cavity of the magnetron also present a phase difference of 0 DEG or 180 DEG according to the hollow metal bridge of different waveguide wavelengths. Therefore, a plurality of coaxial magnetrons are locked by frequency and phase, can work in a pulse wave state or a continuous wave state, and output equivalent power compared with the condition without frequency and phase locking by adopting the coaxial magnetrons with the structure and connecting the coaxial magnetrons through the hollow metal bridge.
In the embodiment of the present invention, based on the above-mentioned output structures and the structural arrangement of the hollow metal bridge, for stable operation of the coaxial magnetron with multiple output structures, the energy ratio of the inner cavity and the outer cavity of the coaxial magnetron does not change significantly due to the multiple output ports, so that when the inner cavity excites the pi mode, and the outer cavity excites the TE011 mode, energy is injected into the outer cavity of another coaxial magnetron through the multiple coupling slits 9 and the hollow metal bridge connected thereto, and the signal has a certain frequency and phase, and excites the TE011 mode in the outer cavity of the injected coaxial magnetron, thereby exciting the pi mode of the inner cavity. Furthermore, the injection process occurs between the plurality of coaxial magnetrons and a standing wave is formed in the hollow metal section, so that the total energy of the coaxial magnetrons is not lost from the overall view.
In an embodiment of the present invention, the length of the hollow metal bridge in fig. 2 is an integer multiple of the waveguide wavelength. Based on the characteristics, the phase difference of microwave output signals between the coaxial magnetrons is 180 degrees under the length of the hollow metal bridge which is the odd times of the half wavelength, and the phase difference of microwave output signals between the coaxial magnetrons is 0 degree under the length of the hollow metal bridge which is the even times of the half wavelength.
In the embodiment of the invention, the coaxial magnetrons are tightly coupled through redesigning the output structure of the outer cavity and connecting the output structure of the outer cavity through the hollow metal bridge. The most important characteristic is that the TE011 mode with 90% energy ratio injects the TE011 standing wave into the outer cavity of other coaxial magnetron via the gap on the outer cavity, and the outer cavity is controlled to work in the TE011 mode, so that the inner cavity coupled closely with the outer cavity is also injected with energy, and the pi mode of the inner cavity work generates close coupling.
The operation of the device has the following important characteristics:
the outer cavity of the first, coaxial magnetron has a plurality of coupling slots for designing different output configurations.
The second, coaxial magnetron, due to the high efficiency coupling of the external cavity TE011 mode, makes the overall power loss very small.
Thirdly, because the outer cavity of the coaxial magnetron has a great difference from the common magnetron in the gap output mode from the resonant cavity, the design of multiple output ports from the outer cavity does not significantly reduce the original high-quality factor of the outer cavity, and the multiple output ports can change the external quality factor of the coaxial magnetron in a different mode.
Fourthly, under the length of the hollow metal bridge which is the odd multiple of the half wavelength, the phase difference of microwave output signals among the coaxial magnetrons is 180 degrees, and under the length of the hollow metal bridge which is the even multiple of the half wavelength, the phase difference of microwave output signals among the coaxial magnetrons is 0 degree. Because the coaxial magnetron has the characteristics of high efficiency and high frequency stability, the characteristics are still unchanged or even better after frequency locking and phase locking, so that the structure is suitable for large-scale frequency locking and phase locking of the coaxial magnetron and a power synthesis system.
Example 2:
in the embodiment of the present invention, an example of connection between two coaxial magnetrons through the frequency locking, phase locking and adjusting structure in embodiment 1 is provided, as shown in fig. 3, by opening two symmetrical coupling slots 9 on the wall of the outer conductor 8 of two coaxial magnetrons, and then connecting them with each other through the hollow structure 14 shown in fig. 2, so that the coaxial resonant cavities 7 of two different coaxial magnetrons are tightly coupled with each other, when the coaxial magnetron cathode emits electrons and gathers the potential energy of the electrons to the high frequency field of the coaxial magnetrons, a part of the microwave energy of the field is injected into the other coaxial magnetron through the coupling slot 9 and the hollow metal bridge structure, and the other coaxial magnetron has a similar process. The coaxial magnetrons are mutually injected with microwave energy and mutually and tightly coupled to form an integral circuit, and the output microwave signals at the moment have the same frequency and are coherent in phase.
Fig. 4 shows a schematic diagram of 4 coaxial magnetrons interconnected by the structure, microwave energy between the four coaxial magnetrons is injected into the coaxial resonant cavity 7 of another coaxial magnetron, and compared with fig. 3, the relationship of mutual coupling energy becomes more complicated due to the larger number of coaxial magnetrons, so that the design of the middle hollow section and the size of the coupling gap 9 are changed correspondingly. Therefore, the size of the coupling gap 9 and the size of the hollow metal bridge in the embodiment of the invention are designed according to the number of the coaxial magnetrons in the frequency locking, phase locking and allocation structure; the frequency locking, phase locking and allocation structure for each coaxial magnetron has corresponding coupling gap 9 size and hollow metal bridge size, and the lengths of the coupling gap and the metal bridge are determined according to the coupling degree required by magnetron coupling, the size of exchange energy and the working frequency.
In the embodiment of the invention, when the annular connection mode is adopted, the coaxial magnetrons are connected in an ending way through the phase locking and allocating structure, at the moment, the number of the magnetrons is N, the number of the coupling gaps is 2N, and the number of the hollow metal bridges is 2N; when a linear connection mode is adopted, the number of the magnetrons is N, the number of the coupling gaps is 2N-2, and the number of the hollow metal bridges is N-1; the number of the coupling gaps is increased or decreased according to different connection modes, and specifically, reference may be made to the two connection modes given above, but the connection modes are not limited to the two connection modes, because more connection modes may be combined according to the two connection modes. In the embodiment of the present invention, one metal hollow bridge must be provided for two coupling slits, that is, the number of metal hollow bridges is N, and then the number of coupling slits must be 2N.
The frequency locking phase locking and allocating structure provided by the embodiment of the invention is simple, the hollow metal bridge and the coaxial outer cavity form a whole, the structure shown in the figure 4 can be used as a module through the realization of integral assembly and process, and the coaxial magnetron array is formed according to the structure.
Example 3:
according to the embodiment of the invention, the size of the frequency-locking phase-locking structure is designed according to the working frequency f =35GHz, in order to improve the quality factor, pure copper with high conductivity is adopted as a manufacturing material, and silver or gold can be plated on the surface after the processing is finished. The radius of the top end of the anode resonant cavity 1 is 2-3mm,
the radius of the bottom of the anode resonant cavity 1 is 4-5mm, the radius of the cathode 3 is 1-2mm, the wall thickness of the anode inner conductor is 0.3-0.6mm, the height of the anode inner conductor and the outer conductor coupling seam 6 is 4-6mm, the width is 0.1-0.5mm, the radius of the outer conductor 8 is 11-13mm, the coupling seam 9 connecting the coaxial resonant cavity and the impedance converter is 0.1-0.5mm, the length of the impedance converter 10 is 2-4mm, the window sheet is made of common sapphire, and the thickness is 1-2mm. The outer wall structure 13 of the hollow metal bridge has a thickness of 1-2mm, the height of the hollow structure 14 is about 3-5mm, the width is 1-3mm, and the radius of the circle is 1-2mm. Meanwhile, the height of the slot 15 is consistent with that of the hollow structure 14, the width is consistent, the angle of the slot on the outer cavity wall can be any angle according to the actual design requirement, and in the embodiment, the angle with the output port is 90 degrees. The working voltage of the coaxial magnetron is 10-20kV, the magnetic field is 1-2T, and the output power is 10-15kW. The working voltage and the magnetic field after phase locking are unchanged, and the output power is also 10-15kW.
The above embodiment is a Ka band magnetron but the structure is not limited to the Ka band, and the phase-locked structure can be made suitable for any band by adjusting the size of the structure.
Compared with other phase-locked structures, the invention has the characteristics that under the new mode control principle, namely the principle of a coaxial magnetron, the coaxial magnetron is enabled to lock frequency and phase through the design and matching of the hollow metal section, and the whole system has the characteristics of compactness, low voltage, modularization and the like. The characteristics make the new structure of the magnetron have great development potential and value in the field of array formation.
In the description of the present invention, it is to be understood that the terms "center", "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.
Claims (5)
1. A frequency locking, phase locking and allocation structure of a coaxial magnetron is characterized by comprising a hollow metal bridge and a plurality of output structures arranged on an outer cavity of the coaxial magnetron;
coupling gaps (9) are formed in the wall of an outer conductor (8) of the coaxial magnetron, each coupling gap (9) is connected with one output structure, and the output structures of the two coaxial magnetrons are connected through a hollow metal bridge; the size of the coupling gap (9) and the size of the hollow metal bridge are designed according to the number of the coaxial magnetrons in the frequency locking, phase locking and allocation structure;
the frequency locking, phase locking and allocation structure of each coaxial magnetron quantity configuration has corresponding coupling gap size and hollow metal bridge size, and the lengths of the coupling gap (9) and the hollow metal bridge are determined according to the coupling degree required by the coaxial magnetron coupling, the size of exchange energy and the working frequency.
2. The structure of frequency locking, phase locking and matching of coaxial magnetron of claim 1, wherein the output structure comprises an impedance transformer (10), an output window (11) and a standard waveguide (12) connected in sequence;
the coaxial resonant cavity (7), the coupling gap (9) and the output structure of the coaxial magnetron are communicated, and are matched with the hollow metal bridge to form a microwave energy coupling channel.
3. The structure for frequency locking, phase locking and tuning of a coaxial magnetron according to claim 1, characterized in that said hollow metal bridge comprises an outer wall structure (13) and an internal hollow structure (14);
the two ends of the hollow structure (14) are coupled with standard waveguides (12) of two coaxial magnetrons.
4. The structure of claim 3, wherein the hollow structure (14) is a dumbbell-shaped structure.
5. The structure of claim 1, wherein the length of the hollow metal bridge is an integer multiple of the waveguide wavelength.
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| JP2006100066A (en) * | 2004-09-29 | 2006-04-13 | New Japan Radio Co Ltd | Variable frequency magnetron |
| JP2014165032A (en) * | 2013-02-26 | 2014-09-08 | New Japan Radio Co Ltd | Coaxial magnetron |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3223882A (en) * | 1961-03-24 | 1965-12-14 | Gen Electric | Traveling wave electric discharge oscillator with directional coupling connections to a traveling wave structure wherein the number of coupling connections times the phase shift between adjacent connections equal an integral number of wavelengths |
| GB1445346A (en) * | 1972-12-21 | 1976-08-11 | English Electric Valve Co Ltd | Magnetrons |
| FR2336788A1 (en) * | 1975-12-23 | 1977-07-22 | Thomson Csf | NEW ELECTRONIC TUBE OSCILLATOR, AMPLIFIER |
| IL106905A (en) * | 1993-09-03 | 1997-01-10 | Israel State | Magnetron construction particularly useful as a relativistic magnetron |
| JP3649851B2 (en) * | 1997-03-27 | 2005-05-18 | 新日本無線株式会社 | Coaxial magnetron |
| US6384537B2 (en) * | 1999-08-25 | 2002-05-07 | Northrop Grumman Corporation | Double loop output system for magnetron |
| GB2360872B (en) * | 2000-03-30 | 2004-05-05 | Marconi Applied Techn Ltd | Magnetrons |
| JP4914472B2 (en) * | 2009-09-10 | 2012-04-11 | 新日本無線株式会社 | Electronic tuning magnetron |
| CN109686636B (en) * | 2018-12-06 | 2021-03-30 | 电子科技大学 | Magnetron structure with modularization characteristic |
| CN113488363B (en) * | 2021-07-06 | 2022-05-03 | 电子科技大学 | TE (time-out) device11Relativistic magnetron with mode output |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3936766A (en) * | 1975-03-05 | 1976-02-03 | General Electric Company | Magnetron with capacitively coupled external cavity resonator |
| JP2006100066A (en) * | 2004-09-29 | 2006-04-13 | New Japan Radio Co Ltd | Variable frequency magnetron |
| JP2014165032A (en) * | 2013-02-26 | 2014-09-08 | New Japan Radio Co Ltd | Coaxial magnetron |
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