Abstract: A magnetron includes an anode cylinder; a cathode side tube hermetically coupled to a lower portion of the anode cylinder; and a shield cylinder. The shield cylinder includes a cylindrical part extending in substantially a vertical direction, a flange part which is connected to the cylindrical part and extends in substantially a horizontal direction over the entire periphery of the cylindrical part, and a folded part in which a portion of the flange part is folded toward the cathode side tube. The shield cylinder is electrically coupled to the cathode side tube at a lower end of the anode cylinder.

Abstract: The present invention includes an electron-discharge signal system with a supercharged electron source and process therefor. The system may be any signal modification unit such as a klystron, magnetron, traveling wave tube, etc. The system includes a heat-responsive electron source, supercharger, collector, a wave modification assembly, and a bleeder module. The electron source discharges an electron beam along a predetermined electron path. The supercharger heats the electron source upon absorption of electromagnetic radiation of a predetermined signal characteristic redirected by the system. The bleeder module redirects a portion of the system's output signal to the supercharger, which heats in response thereto. In other embodiments, the system may be operated entirely by electromagnetic radiation from a freestanding signal source.

Abstract: A power supply for use in a UV curing lamp assembly is disclosed. The power supply is powered by two intermediate frequency (200-400 Hz) low voltage sinusoidal power sources that drive the primary windings of a dual laminated transformer. The low voltage sinusoidal power sources are configured to have different phases. The out-of-phase low voltage sine wave sources are converted to high voltage sine waves on the secondary windings of the dual laminated transformer having the same phase difference relationship. A single rectifier comprising six high voltage diodes, called a ladder rectifier, combine the two out-of-phase sine waves into a single, approximately DC output power source. By modulating a phase difference between two input sine wave power sources, the approximate DC output voltage exiting the ladder rectifier may be alternated between a low ripple mode of about a 13.84% ripple, a high current mode, a high voltage mode, and an intermediate mode with a ripple in the range of about 13.84% to about 100%.

Abstract: A light source is powered by a magnetron and has a quartz crucible having a plasma void with an excitable fill, from which light radiates in use. Two aluminum attachment blocks are attached together and the block is attached to a casing of the magnetron by screws—not shown. The quartz crucible is attached to the block by a Faraday cage, in the form of a perforate metal enclosure secured at its rim to the block. An output formation of the magnetron has a conductive, copper cap fitted in electrical contact with it. The cap is extended by a copper rod. The rod extends through the blocks into a bore in the crucible for coupling microwaves from the magnetron into the crucible. An airspace is provided around the cap in the block. From the cap, the rod extends with negligible air gap in an alumina ceramic tube through the airspace and a boss of the block located in an aperture in an end wall of the block.

Abstract: A magnetron has an anode body (1) and including a ceramic sleeve (7). In higher power generators, stray radiation is emitted from this sleeve in addition to the main power launched from the antenna into the waveguide (2), and RF absorbing material is provided. Such absorbers, however, tend to be frequency-selective, and can overheat. According to the invention, a non-metallic jacket (13) containing a dielectric liquid such as water surrounds the sleeve. This provides absorption over a broad band of frequencies, and it is easy to make the jacket have a sufficiently high thermal capacity, for example, by arranging a flow of liquid through it.

Abstract: The device for the treatment of a gaseous medium according to the invention comprises in flow direction of the gaseous medium a plasma-generating device for the generation of a plasma in the gaseous medium. The plasma comprises in particular excited molecules, radicals, ions, free electrons, photons and any combination thereof. Furthermore, the device according to the invention comprises at least one dielectric structure, in particular at least one fused silica tube. The plasma is conveyable into the at least one dielectric structure, in particular after generation in the plasma-generating device.

Abstract: A magnetron of improved performance capable of stabilizing the frequency and phase of magnetron output for use in particle accelerators and other applications. Thin variable-permeability blocks are attached inside the resonant anode structures of a standard magnetron design. A variable bias electromagnet, with field orthogonal in direction to the RF magnetic field, is used to vary the permeability of each block and therefore the resonant frequency of each anode structure. An electronic feedback control circuit adjusts the bias magnetic fields to lock in the frequency and phase of the magnetron output to an external low-level reference signal. Such devices may be used to provide synchronized high-power RF to many locations (e.g. the RF cavities of a particle accelerator), while requiring the distribution only of electrical power and an appropriate low-level RF reference signal.

Abstract: An inductive filter for a magnetron power supply lead comprises an electrically insulating tube; a power lead located partially within the electrically insulating tube, and coaxial therewith, for supplying power from a magnetron power supply to a magnetron, a first core of a first magnetic material and a second core of a second magnetic material coaxially located on the electrically insulating tube; an insulating disc of same external diameter as the first core and the second core and coaxially located on the electrically insulating tube between the first core and the second core. The inductive filter is arranged to filter noise of a first frequency band and noise of a second, different, frequency band different from being transmitted along the power lead and to absorb a predetermined transient voltage from being transmitted along the power lead.

Abstract: A method for operating a device having an anode and a cathode for generating microwave radiation with an accelerating voltage is provided. A chronological sequence of the accelerating voltage is provided by a series of voltage pulses. A first voltage pulse with an operating amplitude is applied between the anode and the cathode in order to determine whether an electric flashover occurs during the applied first voltage pulse. A second voltage pulse is applied following the first voltage pulse with a deionization amplitude that is smaller than the operating amplitude when the electric flashover occurs during the applied first voltage pulse.

Abstract: A plasma lamp system is described with the capability to tune the resonant frequency of the resonator of the plasma lamp system after the manufacturing process has been completed. The tuning method developed allows a simple low-cost approach to continuously tune the resonant frequency and set the desired frequency to an ISM (Industrial Scientific Medical) band or set the resonant frequency to optimize the performance of the system. The tuning ability of the resonator relaxes the tolerance required for the dimensions of the resonator reducing the manufacturing cost and improving the manufacturing yield of the plasma lamp.

Abstract: A magnetron for microwave oven has an anode cylinder, vanes (height: H (mm)), a cathode spirally extending along the central axis, a pair of end hats (outer diameter: DEH1 (mm), DEH2 (mm)) fixed to both ends of the cathode, and a pair of pole pieces. Vanes extend from an inner surface of the anode cylinder to the central axis. Free ends of the vanes form a vane inscribing circle (diameter: Da (mm)). Pole pieces expand like funnels from through-holes (inner diameter: DPP1 (mm), DPP2 (mm)) facing to the end hats and pinch the cathode. The shape of the magnetron satisfies, H?8.5, H/Da?0.95, DEH1/DPP1?0.8, DEH1/DPP2?0.8, DEH2/DPP1?0.8, DEH2/DPP2?0.8, 0.92?Da/DPP1?0.95, and 0.92?Da/DPP2?0.95.

Abstract: A high power electron tube, such as a magnetron, has the disadvantage that, to reduce the chances of the ceramic RF window failing in use, the manufacturing step entails a prolonged ageing period of powering the magnetron at low power on test, in order to drive any absorbed gases out of the RF window. According to the invention, the RF window 6 is internally glazed (8), which makes it possible to avoid the ageing period.

Abstract: Bulk metamaterial cathodes for multi-cavity magnetrons characterized by specific metal-thin-wire medium lattice topologies are used to improve the magnetron output characteristics, including faster startup times and higher microwave radiation powers.

Abstract: A microwave excited ultraviolet lamp system with a data logging and retrieval circuit and method for operating the same. The data logging and retrieval circuit stores operational data in a cache memory using a FIFO data storage protocol. The contents of the cache memory are periodically copied to a larger removable memory so that the removable memory contains a relatively long historical record of the system operational parameters. The data logging and retrieval circuit includes a data port configured to load the contents of the cache memory into an external device when the device is coupled to the data port. A second data port allows the external device to supply power to the data logging and retrieval circuit so that data may be retrieved when the internal power supply is malfunctioning. Data stored in the removable memory may be protected so that it may only be accessed by authorized personnel.

Abstract: A power supply for a magnetron has a PFC DC voltage source and an HV (High Voltage) converter. The voltage source is mains driven and supplies DC voltage above mains voltage on line, smoothed by capacitor to the HV converter. The latter supplies switched alternating current to transformer. This supplies higher voltage alternating current to a rectifier, in turn supplying the magnetron with high, magnetron powering, anode voltage on line. The DC voltage source has an PFC inductor, which is switched by a transistor switch under control of an integrated circuit. It is the inductor which enables the voltage source to provide a variable DC voltage. An input rectifier is provided for rectifying mains voltage. The output voltage of the voltage source is monitored and fed back to the integrated circuit by a voltage divider.

Abstract: A method for operating an arrangement of equipment that include a pulse generator for generating electrical pulses, a microwave generator with a break-through voltage, and a transmission element is provided. For transmission of the pulses, the pulse generator is connected to the microwave generator via the transmission element, which in the arrangement of equipment, acts as an impedance varying over time. The voltage characteristic over time or the current characteristic over time of each pulse is defined such that in an operating mode, the impedance of the transmission element is matched to the impedance of the microwave generator when the break-through voltage is reached.

Abstract: A THz reverse micromagnetron includes a MEMS-based reverse magnetron configuration in which the anode is located at the center of the magnetron surrounded by a cathode ring. Electrons move radially inward in the combined electric and magnetic cross-fields and can reach orbiting angular frequencies in the THz region, even with a magnetic field of the order of 1 T or less. The THz reverse micromagnetron is portable, operates at room temperature, and can be bright.

Abstract: A highly-reliable electronic frequency tuning magnetron comprises an anode for forming a resonant cavity which is segmented into a plurality of spaces in an inner periphery side of a cylindrical anode shell, a cathode provided at the center of the anode shell along its cylindrical axial direction and an exhausted structure having a coaxial central conductor which is connected to the inside of the cavity of the anode shell and is coupled thereto in a high-frequency manner, wherein the coaxial central conductor is externally led through a wall of the exhausted structure via a through-hole and the through-hole is covered by a dielectric portion placed between an external conductor for constituting the coaxial central conductor and the central conductor, wherein a portion of the led coaxial central conductor is conductively connected to a switching element.

Abstract: To the common point C of two transistors of a magnetron, switched converter power circuit is connected a coupling capacitor which provides input to a starter circuit. A transistor switch is in series with the capacitor and a diode. When the switch is off no current flows in D11. When the switch is made, D11 conducts during alternate halves of cycles present at C. A second diode also conducts and allows current to pass through discharge capacitor. This progressively charges until the voltage across it reaches the breakdown voltage of a gas discharge tube GTD. Whereupon the capacitor discharges through the primary winding of transformer TR2. The secondary winding has many more turns and a starter voltage is induced in the starter electrode. This is isolated from the Faraday cage and terminates adjacent the crucible, close to the void.

Abstract: Embodiments of the invention provide an apparatus, method, and program product to control a lamp system. The apparatus comprises a plasma lamp bulb (20) and a microwave generator (12) operable to generate a microwave energy field to excite the plasma lamp bulb (20) to emit ultraviolet light (24). The apparatus further comprises a sensor (70) to measure the intensity of the ultraviolet light (24) and a reflector (42) positioned between the plasma lamp bulb (20) and the sensor (70) The reflector (42) is operable to reflect at least a portion of the ultraviolet light (24) generated by the plasma lamp bulb (20). The method comprises receiving a target intensity for the ultraviolet light (24) and measuring an intensity of the ultraviolet light (24) using a sensor (70). The method further comprises comparing the target intensity to the measured intensity and, in response to the comparison, adjusting power to a microwave generator (12) to adjust the intensity of the ultraviolet light (24).

Abstract: A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue.

Abstract: An electrodeless lighting system and its control method are disclosed. When the electrodeless lighting system starts, a larger amount of filament current of a magnetron is applied to stably drive the magnetron, and when the electrodeless lighting system operates normally, a smaller amount of filament current is applied, thus avoiding interference with a wireless LAN, lengthening a life span of the magnetron, reducing noise, and improving an operational efficiency of the electrodeless lighting system.

Abstract: A plasma lighting system is disclosed. Interference with an electronic device using the same band as that of the plasma lighting system can be avoided by changing the shape of vanes constituting a magnetron, and a filament current of the magnetron at an initial starting stage and that in a normal state are adjusted to be different, thus avoiding interference with a wireless LAN and attenuating noise, and a resonator has a mash form to increase efficiency. Because a rectangular waveguide is bent substantially at a right angle, and the magnetron and the resonator are disposed at one side on the basis of a waveguide space of the waveguide, thus reducing the size and an installation space of the plasma lighting system.

Abstract: A cathode for use in a magnetron may include a plurality of longitudinally oriented emitter regions disposed around a longitudinal axis of the cathode. Each emitter region can be configured to emit electrons and adjacent emitter regions can be separated from one another by openings. The emitter regions can be configured to promote simultaneous cathode priming, magnetic priming, and electrostatic priming.

Abstract: A microwave tube including: a) an electron gun capable of producing a beam of electrons in the form of a hollow axisymmetrical cylinder in repetitive operation; and b) a body in which the beam is intended to propagate, the body ending with a collector and being provided with means for applying an axial magnetic field for guiding the beam and, upstream from the collector, with a resonant structure crossed by the beam, intended to group the electrons into a succession of packets (P). The resonant structure is formed with two coupled cavities which follow along the axis (Z) of the beam, the coupling being achieved via an inter-cavity region crossed by the beam, this structure having axial symmetry the axis of which is that of the beam and being dimensioned so that the transformation of the electrons in packets is accomplished at a frequency which is that of the ? resonant mode of the resonant structure.

Abstract: A two-beam accelerator device including a drive beam source and an accelerated beam source for providing a drive beam and accelerated beam, a detuned resonant cavity disposed in the path of the drive beam and the accelerated beam, and a two-beam focusing device and method of use thereof. The detuned resonant cavity may be rectangular, square, axisymmetrical, and/or cylindrical. The focusing device may include a modified quadrupole magnet having four magnets, a central opening, a channel in the central opening, an opening in one of the four magnets, the opening having a non-magnetic channel lined with a magnetic material.

Abstract: The present invention aims to provide a magnetron in which the getter material is used under the temperature range in which the gettering effect is sufficiently exerted, and even if the getter material evaporates, the vapor of the getter material is not vapor-deposited on the stem ceramic and the antenna ceramic, and therefore, unwilling electrical conduction or performance deterioration is prevented. The magnetron according to the present invention includes an anode cylinder having a cylindrical shape with open side ends and including an inner wall and a plurality of anode vane radially provided on the inner wall, a cathode part provided on a central axis of the anode cylinder, a pair of pole piece, one of which is provided on the one of the open side end and the other one of which is provided on the other open side end, a mounting part provided in the anode cylinder as a different part from the pole piece, and a getter material provided on the mounting part.

Abstract: A modular magnetron for use in UV curing lamp assembly is disclosed. The modular magnetron includes a vacuum tube having a vacuum tube body, a top assembly, and a bottom assembly. The top assembly is configured to substantially overlay the vacuum tube. The bottom assembly is configured to substantially extend about the vacuum tube, the vacuum tube being positioned to partially protrude from the bottom assembly, the bottom assembly including a cooling assembly configured to employ a flexible clamp-type fitting about the vacuum tube body for substantially maintaining thermal and electrical conductivity. The top assembly is configured to be releasably fastened to the bottom assembly about the vacuum tube with removable fasteners.

Abstract: A cathode of a magnetron having a radial extension to accommodate the cathode terminals is supported by arms which have a greater diameter over the region in which they are supported in the glass thimble than over the region of the free ends. This shifts any vibrations to a higher frequency band, which is less liable to be excited in the event the magnetron is moved rapidly as in a linac used for radiotherapy purposes.

Abstract: The magnetron includes: an exhaust pipe in which an antenna is disposed in a vacuum-sealed space, and which extends along the central axis of the antenna; an insulation tube which extends along the central axis of the antenna, and of which one end is fixed to the exhaust pipe by brazing; and an antenna cap including a bottom portion and a tubular portion which is continuous with the bottom portion to extend along the axis of the antenna and of which a diameter on an open end side is larger than a diameter of the exhaust pipe. The tubular portion of the antenna cap covers: a brazed portion where the exhaust pipe and the insulation tube are brazed to each other; and a metalized portion.

Abstract: A modular magnetron for use in UV curing lamp assembly is disclosed. The modular magnetron includes a vacuum tube having a vacuum tube body, a top assembly, and a bottom assembly. The top assembly is configured to substantially overlay the vacuum tube. The bottom assembly is configured to substantially extend about the vacuum tube, the vacuum tube being positioned to partially protrude from the bottom assembly, the bottom assembly including a cooling assembly configured to employ a flexible clamp-type fitting about the vacuum tube body for substantially maintaining thermal and electrical conductivity. The top assembly is configured to be releasably fastened to the bottom assembly about the vacuum tube with removable fasteners.

Abstract: A luminaire has a light source in the form of a quartz crucible, having a plasma void. A power supply has a magnetron for providing microwaves for generating a plasma in the void. An air wave guide is connected below the magnetron and a connector is connected below the wave guide. The plasma crucible is fitted to the bottom of the connector and is enclosed by a Faraday cage. Arranged with the crucible at its focal point is a reflector. It has a central aperture through which the connector extends. A lower, hemispherical shell of a casing for the power supply supports the reflector at a similar aperture, with the interposition of one or more focus adjusting spacers.

Abstract: The present invention is directed towards devices, systems and methods which produce electromagnetic waveforms including radio-frequency waves, microwaves and electromagnetic waves having no field current or electric field (magnetic waves) and subatomic and/or charge-less particles. In one embodiment, the system and method produces a “charge-less” propagating “magnetic” wave and/or charge-less particles and/or subatomic particles which have demonstrated high utility in the structural modification of both solids and liquids for materials processing. The energy generator according to one embodiment comprises a magnetron emitter hermetically sealed in a housing and supplied with a continuous dirty or erratic voltage signal to cause the magnetron emitter to operate erratically and unstably as a broad band signal generator whereby electromagnetic waves are produced in the hermetically sealed housing which facilitates and produces a plasma above the cathode of the magnetron emitter.

Abstract: The hyperfrequency wave generator device according to the invention comprises a plurality of magnetrons, each magnetron comprising: a cathode, and an anode, surrounding the cathode and comprising an inner surface defining a plurality of resonant cavities distributed along its periphery. The generator device also comprises at least one waveguide, each waveguide extending from the anode of a magnetron toward the outside of the magnetron. The plurality of resonant cavities of each magnetron comprises a plurality of resonant connecting cavities, or at least one resonant connecting cavity and at least one resonant output cavity. Each resonant connecting cavity of each magnetron is identical each resonant connecting cavity and, if the magnetron comprises at least one output cavity, to each resonant output cavity of the magnetron.

Abstract: This disclosure is related to a magnetron including a cylindrical cathode having a center axis, an anode coaxially arranged with the cathode so as to be separated from the cathode via a predetermined space, and a pair of pole pieces provided to both ends of the cathode in the axial direction so as to oppose to each other and having opposing faces perpendicular to the axial direction. The pole piece has a first ridge of a ring shape that is formed on the opposing face and is coaxial with the cathode.

Abstract: A seal and fixation assembly includes a cylindrical target having an inside surface with a shoulder that forms a stop within the target. A target retaining ring is disposed about the target. A seal plate is disposed within the target and engages the stop and the inside surface of the target. An end cap is disposed on the end of the target and includes a portion with a beveled surface within the target. A sealing element is disposed between the inside surface of the target, the seal plate, and the beveled surface of the end cap. A clamp is disposed over the end cap and the target retaining ring. Engagement of the end cap and the target retaining ring with the clamp causes the end cap to move within the target toward the stop to compress the sealing element between the target, the seal plate, and the beveled surface.

Abstract: Embodiments of a target tracking system and method with jitter reduction suitable for directed energy systems are generally described herein. In some embodiments, the directed energy system includes a target tracking system to track one or more track points on a moving target, and a beam transmission unit to maintain a directed energy beam on a selected one of the track points in response to tracking control signals provided by the target tracking system. The track points may be smaller than a spot size of the directed energy beam maintained on the target.

Abstract: A plasma electrodeless lamp comprises a substantially hollow metallic body, closely receiving two coupling elements, the first coupling element connected to the output of an RF amplifier, and the second coupling element connected to the input of an RF amplifier. The first coupling element is conductively connected (grounded) to metallic lamp body at its top surface, while the second coupling element is not. The lamp further comprises a vertical metallic post, the post being grounded to the metallic lamp body at the post's bottom surface. The lamp further comprises a dielectric sleeve which closely receives the metallic post, and which is in turn closely supported by the lamp body or alternatively or in combination a tuning stub. The lamp further comprises a bulb that is closely received by the metallic post, and that encloses a gas-fill which forms a radiant plasma when excited.

Abstract: To prevent the continuation of the abnormal state occurring immediately after the lighting start of the electrodeless discharge lamp excited by a DC driven magnetron and to recover promptly from the abnormal state at the steady state period. Lighting start of an electrodeless discharge lamp is performed in soft start mode. Increasing the power supply to the magnetron gradually, the lamp is turned into a lighting state for longer time than the time for the luminescence medium to evaporate fully absorbing microwave. At that period, the output of DC power supply is periodically cut off momentarily, resetting the abnormal state. Then, stable DC power is supplied. At the steady state period, the anode current of the magnetron is controlled to be constant. When rise of the operation voltage of the magnetron is detected, the output of DC power supply is cut off momentary to recover to the steady state.

Abstract: A bandpass filter comprises an air filled aluminum chamber having a lid and a cuboid resonant cavity having a central iris. At opposite end nodes of the cavity, perfect electric conductors (PECs) are provided. Threaded tuning projections opposite the PECs and in the iris are provided, whereby the pass band and the transmission characteristics of the filter in the pass band can be tuned to match the input impedance of the band pass filter and the wave guide to the output impedance of a microwave drive circuit. It is mounted on one end of the filter chamber, with an electrodeless bulb in a central cavity directed axially away from the chamber and the radiator in a further cavity set to one side of the central cavity. When the filter is driven, the wave guide resonates driving the bulb.

Abstract: To provide a magnetron capable of reducing noises in a low frequency band of 30 MHz or less without deteriorating the stability of a load depending on phases, and also ensuring the precision of assembly dimensions without increasing the number of components, a coiled filament 3 is arranged between an input-side end hat 61 and an output-side end hat 7 which are supported by a cathode supporting rod 8. A larger-diameter boss 61a in the end hat 61 extends to the interior of an interaction space, a smaller-diameter boss 61b and one end 3a of the filament 3 are secured to each other, and the other end 3b is secured to a boss 7a of the end hat 7. Here, the dimension of an axial free length part F which forms an electron emission part which is not secured to the end hats 61 and 7 of the filament 3 is set to 50% or more and 80% or less of the axial dimension H of plate-like vanes 2, and the electron emission part is arranged so as to be displaced to the output side.

Abstract: Described is a plasma electrode-less lamp. The device comprises an electromagnetic resonator and an electromagnetic radiation source conductively connected with the electromagnetic resonator. The device further comprises a pair of field probes, the field probes conductively connected with the electromagnetic resonator. A gas-fill vessel is formed from a closed, transparent body, forming a cavity. The gas-fill vessel is not contiguous with (detached from) the electromagnetic resonator and is capacitively coupled with the field probes. The gas-fill vessel further contains a gas within the cavity, whereby the gas is induced to emit light when electromagnetic radiation from the electromagnetic radiation source resonates inside the electromagnetic resonator, the electromagnetic resonator capacitively coupling the electromagnetic radiation to the gas, which becomes a plasma and emits light.

Abstract: An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a tee coupled between the first and the second circulator, and a tuner coupled to the tee. An apparatus for use in a process to regulate power for a particle accelerator includes a first circulator, a second circulator, a 3-dB coupler coupled between the first and the second circulator, and a tuner coupled to the 3-dB coupler.

Abstract: The present invention provides a magnetron which can conduct more magnetic flux in the active space at the periphery of a cathode structure to thereby further improve the efficiency of a magnetic circuit. The magnetron of the present invention includes an anode cylinder on which inner wall a plurality of anode vanes are provided, a pole piece provided on an end side of the anode cylinder, a circular magnet provided on the vicinity of the pole piece, and a magnet ring provided between the anode cylinder and the circular magnet. An outer diameter of the magnet ring is smaller than or equal to the outer diameter of the circular magnet and larger than or equal to the outer diameter of the anode cylinder. The magnet ring has a portion on a surface of the pole piece side whose normal line is non-parallel to the central axis of the anode cylinder.

Abstract: A magnetron for holding deformation of a cathode side tube for alignment of a cathode filament and eliminating the need for alignment at the time of exterior assembly work of the magnetron is provided. The magnetron of the invention includes an anode cylinder; a cathode side tube hermetically coupled to a lower portion of the anode cylinder; and a shield cylinder having a cylindrical part extending in substantially a vertical direction, a flange part which is connected to the cylindrical part and extends in substantially a horizontal direction over the entire periphery of the cylindrical part, and a folded part in which a portion of the flange part is folded toward the cathode side tube, the shield cylinder being electrically coupled to the cathode side tube at a lower end of the anode cylinder.

Abstract: A cooking device includes a cooking chamber; a first deodorization region along which air from the cooking chamber flows and in which a plasma discharge is generated for removing odor-producing materials generated in the cooking chamber from the air; and a bypass region along which air from the cooking chamber flows to bypass the first deodorization region.

Abstract: A magnetron including a cathode, an anode axially aligned with the cathode and including a plurality of radial vanes defining resonant cavities, an output coupler connected to a first set of the vanes, a second set of vanes not connected to the output coupler, and extensions formed on only the vanes of the second set, the extensions extending in the axial direction towards the output coupler in a direction parallel to the axis of the anode, the extensions not being connected to the output coupler, whereby a capacitance between the axial extensions and the cathode at least partly compensates for the capacitance between the output coupler and the cathode.

Abstract: A magnetron has an anode cylinder, ten vanes, three strap rings. The ten vanes are fixed to an inner surface of the anode cylinder and arranged in a radial pattern of which center is at an axis of the anode cylinder. Each of the three strap rings connects vanes that are alternatively arranged. A first strap ring and a third strap ring are arranged on a first end of the vanes in a direction of axis, and a second strap ring is arranged on a second end that is opposite to the first end. Outer diameter of the second strap ring is equal to inner diameter of the first strap ring and outer diameter of the third strap ring is equal to inner diameter of the second strap ring.

Abstract: To provide a magnetron capable of suppressing generation of a reactive current and noise thereby improving oscillation efficiency, and a device using microwaves which includes the magnetron. A magnetron of the present invention includes: an anode cylinder including a plurality of anode vanes provided at a predetermined interval on an inner peripheral surface thereof; a center lead including a first linear portion, a second linear portion which is disposed parallel to the first linear portion and which is disposed out of alignment with the first linear portion in a plane perpendicular to an axial direction of the anode cylinder, and a bent portion which connects the first linear portion to the second linear portion; and a cathode filament which is supported by the center lead within the anode cylinder and which is placed coaxially with the anode cylinder. The center lead is formed so as to become bent between the first linear portion and the second linear portion by the bent portion.

Abstract: The present invention provides a relativistic magnetron with axial extraction, or magnetron with diffraction output (MDO), with a mode converter placed directly within the diffraction output of radiation to effectively convert the operating ?-mode into a radiated mode of simpler radiation patterns.