79results about "Magnetrons" patented technology

The invention belongs to the technical field of microwave sources, and provides a filament current and magnetic field current-based power output method, device and system, the method comprises the execution of a plurality of cycles, and the nth cycle comprises the following steps: obtaining and executing a control strategy, then collecting the real-time power of a magnetron, if the deviation value between the real-time power of the magnetron and the target power is within the set range, all the n periods are completed, otherwise, the n + 1th period is entered, and n is larger than or equal to 1; and after all periods are completed, if the deviation value between the real-time power and the target power is greater than a set value and the duration time exceeds the set time, re-executing the power output method. According to the method, a filament current control strategy, a magnetic field current control strategy and a power control strategy are adopted, the three strategies are in a synergistic effect, and the multiple strategies are organically fused, so that the operation of the magnetron is more stable and adaptive.

The application belongs to the technical field of microwave sources, and provides a power output method, device and system based on filament current and magnetic field current, wherein the method comprises executing a plurality of periods, the nth period comprising the following steps: acquiring and executing a control strategy, then collecting the real-time power of the magnetron, if the deviation value of the real-time power of the magnetron and the target power is within the set range, then all the n periods are completed, otherwise the (n+1)th period is entered, n>=1; after all the periods are completed, if the deviation value of the real-time power and the target power is greater than the set value and the duration exceeds the set time, then the power output method is re-executed. The method of the application adopts a filament current control strategy, a magnetic field current control strategy and a power control strategy, and the three strategies work together, and the organic integration of the multiple strategies makes the operation of the magnetron more stable and adaptive.

Embodiments of the present disclosure relate to a vacuum and high voltage radio frequency system for a medical linear accelerator. A radio frequency system for a radiotherapy machine includes: a first portion including a first gas at a first pressure; a second portion comprising a second gas at a second pressure, the second gas being different from the first gas; and a component between the first portion and the second portion, the component containing a first gas at a first pressure.

The invention discloses a PVD (Physical Vapor Deposition) magnetron sputtering high metal ionization non-equilibrium magnetron. The non-equilibrium magnetron comprises a magnet yoke and a magnet block, the magnet block is installed on the magnet yoke and comprises an outer ring magnet, an inner ring magnet and a center magnet, a gap is formed between the outer side of the center magnet and the inner side of the outer ring magnet, the inner ring magnet is clamped in the gap between the outer ring magnet and the center magnet, and the outer ring magnet is provided with an N pole and an S pole which are oppositely distributed in the first direction; the center magnet is provided with an N pole and an S pole which are oppositely distributed in the reverse direction of the first direction. The inner ring magnet is provided with an N pole and an S pole which are oppositely distributed in the radial direction, the magnetic pole of the outer side of the inner ring magnet is the same as that of the end, away from the magnet yoke, of the outer ring magnet, and the magnetic pole of the inner side of the inner ring magnet is the same as that of the end, away from the magnet yoke, of the center magnet. According to the invention, the inner ring magnet with specific polarity configuration is arranged between the outer ring magnet and the central magnet, so that the magnetic field intensity of the magnet block on one side away from the magnet yoke is stronger, and the luminance build-up of the plasma is improved.

The application discloses a cathode filament, a cathode assembly, a magnetron and a microwave cooking electric appliance. The cathode filament is used for the magnetron, the cathode filament is in a spiral structure, the cathode filament comprises two non-main emission areas and a main emission area, the two non-main emission areas are connected to two sides opposite to the main emission area along the length direction of the cathode filament, and the pitch of the non-main emission area is greater than the pitch of the main emission area. In the cathode filament, the pitch of the non-main emission area outside the main emission area is greater than the pitch of the main emission area, the stress of the non-main emission area can be more dispersed, the stress of the cathode filament at the non-main emission area can be effectively reduced, and the breaking resistance of the cathode filament after carbonization is improved.

The application discloses an arrayed multi-path frequency-locked magnetron monitoring system, which comprises an arrayed multi-path magnetron, a multi-path coupling mixer capable of receiving signals emitted by the arrayed multi-path magnetron, a multi-path filter-amplifier assembly connected with an output end of the multi-path coupling mixer, a time-division multi-selection switch connected with an output end of the multi-path filter-amplifier assembly, an output end of an AD sampling assembly is connected with a data processing system and a multi-path frequency synthesis source respectively, an output end of the multi-path frequency synthesis source is connected with a mixing frequency input end of the multi-path coupling mixer, and the monitoring system further comprises a reference clock connected with the AD sampling assembly and the multi-path frequency synthesis source. The application adopts multi-path coupling mixing, multi-path switching, AD acquisition and data processing on multi-path signals in time division, obtains multi-path magnetron parameter information in time division, and improves sampling accuracy by adopting multi-path frequency synthesis source feedback, and reduces equipment volume and power consumption.

The application relates to a coaxial relativistic magnetron outputting TEM modes, belonging to the technical field of high-power microwaves, which comprises an anode, a cathode and a magnet, the anode comprises an inner cavity cylinder and an outer cavity cylinder which are coaxially nested, long anode blocks and short anode blocks are alternately arranged on the inner wall of the inner cavity cylinder in the angular direction, the long anode blocks and the short anode blocks are alternately distributed in the axial direction of the inner cavity cylinder to form symmetrical sector edge cavities inside the inner cavity cylinder, an edge cavity angular coupling slot is arranged on the inner cavity cylinder and corresponds to the sector edge cavities, and an inner cavity axial coupling slot is arranged on the inner cavity cylinder and located between the long anode blocks and the short anode blocks, the application has the advantages of simple and compact structure, suitable permanent magnet packaging and low-order mode output, and can realize high-power and high-efficiency microwave output.

The invention relates to a coaxial relativistic magnetron for outputting a TEM mode, and belongs to the technical field of high-power microwaves, the coaxial relativistic magnetron comprises an anode, a cathode and a magnet, the anode comprises an inner cavity cylinder and an outer cavity cylinder which are coaxially nested, and long anode blocks and short anode blocks are alternately arranged on the inner wall of the inner cavity cylinder in the angular direction; the long anode blocks and the short anode blocks are alternately distributed in the axial direction of the inner cavity cylinder in a long-short mode so that symmetrical fan-shaped side cavities can be formed in the inner cavity cylinder, side cavity angular coupling seams are formed in the positions, corresponding to the fan-shaped side cavities, of the inner cavity cylinder, and inner cavity axial coupling seams are formed in the positions, located between the long anode blocks and the short anode blocks, of the inner cavity cylinder. The invention has the advantages of simple and compact structure, suitability for permanent magnet packaging and low-order mode output and the like, and can realize high-power and high-efficiency microwave output.

The present application relates to the technical field of small magnetron microwave cavity, and discloses a passive hydrogen atom frequency standard small magnetron microwave cavity.The passive hydrogen atom frequency standard small magnetron microwave cavity comprises a cavity tube and four pole pieces, a sealed microwave resonant cavity is formed in the cavity tube, one coupling ring is arranged on each side of the side surface of the cavity tube, the two coupling rings are respectively used for input and output of microwave signals, the outer diameter of the cavity tube is 111mm, the inner diameter of the cavity tube is 105mm, and the height is 188.5mm; the pole piece is in an arc structure, four pole pieces are arranged in a ring in the sealed microwave resonant cavity, a connecting column is protrudingly arranged on the side of each pole piece away from the center of the plurality of pole pieces, the connecting column is connected to the side wall of the cavity tube, the annular inner diameter surrounded by the four pole pieces is 61.6mm, the annular outer diameter is 67.4mm, the height of the pole piece is 145mm, and the spacing between each adjacent two pole pieces is 3.8mm.The passive hydrogen atom frequency standard small magnetron microwave cavity is light in mass, small in size, and meets the magnetic field environment requirement of hydrogen atom transition of the passive hydrogen atom frequency standard.

The invention provides a partitioned magnetron and coating equipment, and belongs to the technical field of semiconductor production equipment.The partitioned magnetron comprises a plurality of magnetic poles and an insulation structure, a first spacer region is arranged between every two adjacent magnetic poles, each magnetic pole is equally divided into a plurality of magnetic blocks, and a second spacer region is arranged between every two adjacent magnetic blocks; and the insulating structure is arranged in the first spacer region and the second spacer region. A first interval area is arranged between every two adjacent magnetic poles, the same magnetic pole is also internally divided into the magnetic blocks which are distributed at intervals, the insulating structures are used for performing separation and insulation, so that the magnetic blocks have good insulativity, when the magnetron performs high-speed scanning, due to the fact that the size of a single magnetic block is small, only tiny vortex current can be generated, and the magnetic blocks can be separated and insulated at intervals. The magnetic pole can be effectively prevented from generating high temperature, so that the demagnetization condition is avoided, and the utilization rate of the target material and the uniformity of a corrosion area on the target material can be improved.

The present application belongs to the field of microwave source technology in vacuum electron devices, and particularly relates to a same-voltage integrated double-frequency output magnetron for microwave oven, which is provided with two magnetrons with different frequencies and sizes, a heat dissipation structure and a magnetic circuit structure, the two magnetrons share one magnetic circuit structure, and the magnetron part and the heat dissipation structure are arranged in the magnetic circuit structure; the heat dissipation structure is provided with three parts of left heat dissipation fins, middle heat dissipation fins and right heat dissipation fins, wherein the left heat dissipation fins are arranged outside one magnetron and extend to the left, the right heat dissipation fins are arranged outside the other magnetron and extend to the right, and the two magnetrons are fixedly connected through the middle heat dissipation fins. In the present application, the same-voltage integrated double-frequency output magnetron is used, the frequencies of the two magnetrons are 2.45 GHz and 5.8 GHz respectively, the frequency difference is large, and the mutual coupling between the two outputs is small; and the double-frequency structure adopts the same voltage and is designed in an integrated manner, so that the structure is simple and suitable for various microwave ovens, and the placement problem of the two magnetrons and the heating uniformity problem are solved.

The application discloses a cathode filament, a cathode assembly, a magnetron and a microwave cooking appliance. The cathode filament has a spiral structure, and a filament material of the cathode filament comprises a filament core and a carbonized layer, the carbonized layer at least wraps the filament core in a circumferential direction of the filament core, a material of the filament core comprises lanthanum tungsten material, and the carbonized layer comprises a lanthanum tungsten carbonized layer. In the cathode filament, the material of the filament core comprises the lanthanum tungsten material, and the carbonized layer comprises the lanthanum tungsten carbonized layer, which reduces the work function of the cathode filament to a certain extent, improves the migration ability of rare earth elements in the cathode filament, and thus the electron emission ability of the cathode filament can be improved to a certain extent, so that the magnetron can adapt to more power requirements of the microwave cooking appliance.

The application provides a relativistic magnetron based on edge-coupled magnetic coupling coaxial TEM mode extraction, which comprises an anode, a cathode and a magnet, wherein the anode comprises an outer cylinder, long anode blocks, short anode blocks, angular coupling slots, a reflecting ring, a coaxial waveguide inner conductor and a coaxial waveguide outer conductor. The long anode blocks and the short anode blocks are alternately distributed inside the outer cylinder, are aligned at one end of the outer cylinder and are alternately distributed in length at the other end; the short anode blocks, the adjacent long anode blocks and the reflecting ring form a fan-shaped edge cavity, and the angular coupling slots are arranged on the outer wall of the fan-shaped edge cavity. The coaxial waveguide outer conductor is connected with the outer cylinder, and the inner conductor is connected with the long anode blocks. When the magnetron works in a pi mode, the high-frequency magnetic field of adjacent resonant cavities is coupled to the coaxial waveguide through the angular coupling slots in phase, the TEM base mode is excited to be axially transmitted, and the full-cavity microwave energy coupling extraction is realized. The microwave energy is extracted through the edge-coupled magnetic coupling mode, the output power and the efficiency are improved, and the structural design is simplified.

A radiation support system for radiation therapy includes a waveguide assembly. The waveguide assembly includes a waveguide (4400) extending along a first axis, a mode launcher (4402) extending along a second axis, the second axis being different than the first axis, and a resonant cavity twist (4401) coupling the waveguide to the mode launcher.

Disclosed are a tube core (12) of a magnetron (100), the magnetron (100) and a microwave appliance. The tube core (12) of the magnetron (100) comprises: an anode component (20), the anode component (20) comprising an anode cylinder (28), wherein an interaction space (38) is provided in the anode cylinder (28); a cathode component (22), the cathode component (22) comprising a filament (40), wherein the filament (40) is located in the anode cylinder (28); and a magnetic pole component (26), the magnetic pole component (26) comprising a first magnetic pole (42) and a second magnetic pole (44), wherein the first magnetic pole (42) and the second magnetic pole (44) are respectively arranged at two ends of the anode cylinder (28) in a first direction, and the first magnetic pole (42) and the second magnetic pole (44) have different shapes and configurations.

This invention provides a high-frequency magnetron structure and vacuum device. The high-frequency magnetron structure includes: an anode tube with an anode resonant cavity; the outer peripheral sidewall of the anode tube includes at least two output structures; the output structure includes an output coupling port that penetrates the anode tube wall and communicates with the anode resonant cavity; and a microwave channel that communicates with the output coupling port. The high-frequency magnetron structure provided by this application is compact, small in size, low in cost, light in weight, requires low voltage, has a low magnetic field, requires a simple operating power supply, and has good phase stability. It also improves the output power of the magnetron and reduces the risk of high-frequency breakdown at the output coupling port. It is suitable for applications requiring high-power microwaves and can meet the high-power microwave requirements of most applications, especially in millimeter-wave, short-millimeter-wave, and even terahertz frequency bands.

Provided are a magnetron and a microwave heating device. The magnetron includes a tube core (21), a first tube shell (21a), a second tube shell (21b), an output ceramic (22), an antenna cap (23), and an antenna (24). The first tube shell (21a), the tube core (21), the second tube shell (21b), the output ceramic (22), and the antenna cap (23) are connected in sequence. The antenna (24) extends into the tube core (21), and sequentially passes through the second tube shell (21b) and the output ceramic (22) and extends into the antenna cap (23). A height H1 of the second tube shell (21b) relative to the tube core (21) is smaller than or equal to 14mm, and a ratio of the height H1 of the tube core (21) to a height H2 of the output ceramic (22) ranges from 0.4 to 2.3.

This invention belongs to the field of microwave source technology in vacuum electronic devices, and particularly relates to a coaxial frequency-locked phase-locked structure and a magnetron array system comprising it. The system includes magnetrons equipped with coaxial cables and at least one coaxial energy coupler. The coaxial energy couplers of adjacent magnetrons are connected by coaxial cables between them. The N+1 magnetrons include at least N coaxial cables, and the electrical parameters such as cable length, impedance, and power capacity can be flexibly selected. N>1 can also be any number. This invention introduces efficient frequency-locking and phase-locking between magnetrons, ensuring phase coherence of the output power between the tubes. This allows the use of a large number of magnetrons in an array to overcome the power capacity limitation of a single tube. It also solves the problem of fixed array configuration and inflexibility in existing frequency-locking and phase-locking hard-connection methods, while maintaining the advantages of high-efficiency frequency-locking and phase-locking. The structure offers high flexibility and efficiency, and the overall system is simple.

This invention discloses an oxide cathode and its sintering apparatus. The oxide cathode includes a cathode cylinder and a porous sponge layer. The cathode cylinder has two annular stepped surfaces, which are spaced apart from each other along the axial direction of the cathode cylinder. The cathode cylinder also has a sintering region located between the two stepped surfaces. The sponge layer is disposed within the sintering region, with its two ends respectively attached to the two stepped surfaces. Simultaneously, the sponge layer does not protrude from the stepped surfaces radially within the cathode cylinder. This invention can effectively suppress the axial scattering of electrons from the non-emission region of the oxide cathode, reduce interference with high-frequency fields, reduce the bombardment of the magnetron anode end cap by scattered electrons from the non-emission region, effectively solve the oxidation problem of the anode end cap during magnetron use, and improve the overall performance of the magnetron.

The application discloses an S-band high-power pulsed magnetron and belongs to the field of vacuum electron devices. The device comprises an anode assembly, a cathode assembly, an input assembly, an output assembly and a permanent magnet. The application adopts an axial output structure, improves the sizes and proportions of the anode and the cathode, simultaneously increases the anode voltage, adopts the permanent magnet to provide a constant magnetic field, and can output a pulsed microwave power of more than 100kW on the basis of a small size.

The application discloses a relativistic magnetron with an energy feedback structure and belongs to the microwave technical field.The relativistic magnetron is a full-cavity extraction structure and comprises an anode, a cathode, an energy extraction structure and a guide magnetic field coil; wherein the energy extraction structure is provided with a ring-shaped microwave reflection plate in an output circular waveguide part, part of energy is reflected back to a cathode-anode gap, the interaction between an electron cloud and a space electromagnetic wave is enhanced, and the output power of the relativistic magnetron is improved. The application effectively improves the output power of the relativistic magnetron while guaranteeing the compactness of the device; meanwhile, the energy feedback structure is simple and easy to process.

The invention discloses a turnup structure cooling fin for a magnetron, which comprises a cooling fin body, a cooling fin central through hole is formed in the middle of the cooling fin body, and a fin primary turnup with a certain height is vertically arranged along the edge of the cooling fin central through hole. The two ends of the two opposite sides of the cooling fin body are connected with a plurality of two-end cooling fins with bending angles respectively, a plurality of sawtooth-shaped flanges are connected along the primary flanging edges of the fins, and stamping and folding structures are arranged on the surfaces of the sawtooth-shaped flanges. According to the magnetron, by designing the two-time flanging structure, the dual capacity of improving the flanging heat exchange coefficient and the heat exchange area is achieved, so that the heat exchange effect is enhanced, the temperature of the center anode body is reduced, and the working performance of the magnetron is further improved.

The application discloses a compact real-time frequency-agile relativistic magnetron, and belongs to the technical field of high-power microwave sources. The device comprises an input structure, an end space structure, an anode cavity structure, a full-cavity extraction output structure arranged in sequence along an axial direction, a cathode coaxially arranged in the anode, and a vacuum tuning mechanism. The vacuum tuning mechanism comprises a tuning slider, a tuning rod and a sealing assembly. The application designs the vacuum tuning mechanism, moves the tuning slider through the tuning rod, adjusts the axial length of the coupling slit and the sector waveguide cavity, changes the resonant frequency of the resonant cavity, and finally realizes real-time frequency-agile of the device in a high-vacuum state. In addition, the compactness of the device is realized by adopting a reentrant coupling cavity structure and a full-cavity extraction structure.

The present application relates to a kind of axial tuning relativistic magnetron based on distributed reentrant cavity structure, the present application is introduced distributed reentrant cavity structure outside the resonant cavity of single-frequency relativistic magnetron, break through the frequency band limit of traditional tuning mode, even in the high-frequency device of shallow resonant cavity depth, still can realize the continuous adjustment of resonant frequency;Compared with traditional axial tuning structure, the magnet of the present application does not need to be arranged around sectoral waveguide, by optimizing the spatial layout of tuning mechanism, the transverse space utilization of system is significantly improved, so that the overall structure is more compact and lightweight;Based on the in-band power efficiency of relativistic magnetron proposed in the present application is not sensitive to the characteristics of tuning structure, and maintains high power conversion efficiency in X band.

The invention discloses a tube core of a magnetron, the magnetron and a microwave electric appliance. According to the embodiment of the invention, the tube core of the magnetron comprises an anode part which comprises an anode cylinder, and the interior of the anode cylinder is provided with an interaction space; the cathode component comprises a lamp filament, and the lamp filament is located in the anode cylinder; the magnetic pole component comprises a first magnetic pole and a second magnetic pole, the first magnetic pole and the second magnetic pole are arranged at the two ends of the anode cylinder in the first direction respectively, and the first magnetic pole and the second magnetic pole are different in shape and structure. In the tube core of the magnetron, the first magnetic pole and the second magnetic pole have different shapes and structures, so that the magnetic field distribution of the interaction space can be changed through the magnetic pole structures, more electrons in the interaction space are in steady-state motion, the purpose of energy exchange is achieved, the generation of stray electrons is reduced, and the noise emitted outwards by the magnetron is reduced.

The invention discloses a high-power magnetron microwave mutual coupling forming method and system based on a transmission line, and belongs to the field of magnetron control technology and microwave synthesis. According to the magnetron array, interconnection of the magnetron pieces is achieved through the coupling waveguide or the H-T waveguide, the transmission coefficient of the H-T waveguide or the coupling waveguide is adjusted to be within the range of-7 dB to-14 dB, and frequency locking and phase locking of the magnetron array are achieved. According to the scheme, the use of a circulator is reduced, the cost is greatly reduced, the weight and the size of the whole system are reduced, and the effect of lightweight microwave synthesis is achieved.

The invention discloses a magnetron for a microwave oven, and belongs to the technical field of microwave sources in vacuum electronic devices. The magnetron comprises an anode assembly, a cathode assembly, an input assembly, an output assembly and a permanent magnet, wherein two ends of an anode blade of the anode assembly adopt double-end single-ring diaphragm belts to replace the existing double-end double-ring diaphragm belts. According to the magnetron disclosed by the invention, high-stability and high-efficiency output is kept on the basis of reducing anode materials and simplifying the assembly process flow of the diaphragm belt and the anode blades, so that the cost of the microwave oven can be further reduced, and the requirements of more people can be met.

The invention discloses a two-wing structure radiating fin for a magnetron, which comprises a radiating fin body, two ends of two opposite sides of the radiating fin body are respectively connected with a plurality of small radiating wings, the radiating fin body between the small radiating wings at two ends forms a middle radiating fin, and the included angles between the small radiating wings and the horizontal direction are different. The small radiating wings at the two ends of the radiating fin body are arranged in a crossed and staggered manner; according to the two-wing structure, through the crossed and staggered arrangement, the situation that the heat exchange capacity is weakened due to the fact that the front wing shields the rear wing and the rear wing is in poor contact with air is reduced, the direct contact capacity of the two wings and the air is effectively improved, disturbance of the two wings of the cooling fin to the air is enhanced, the turbulence effect is enhanced, and the heat exchange efficiency is improved. Therefore, the heat exchange effect of the two wings is improved, the temperature of the central anode body is reduced, and the working performance of the magnetron is further improved.

Disclosed area magnetron device and magnetron sputtering apparatus. The magnetron device includes a magnetron including an outer magnetic pole and an inner magnetic pole, wherein the outer magnetic pole includes an outer linear portion and an outer semicircular portion connected to an end part of the outer linear portion, the inner magnetic pole includes an inner linear portion, and a gap is formed between the inner linear portion and the outer linear portion; and a driving device configured to drive the magnetron to reciprocate along a first direction and a second direction, wherein a distance L1 that the magnetron scans along the first direction satisfies: L1≥d, a distance L2 that the magnetron scans along the second direction satisfies: 0.5d≤L2≤2d, and d is a distance between center lines of the gaps on two sides of the inner linear portion of the magnetron.

The utility model discloses a magnetron assembly of adjustable magnetic field, including magnetron main part, and magnetron main part includes cathode assembly and anode assembly, and the cathode assembly place is provided with permanent magnet no.