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JP04137439 |
PURPOSE: To set electron beams at the position of the largest oscillation efficiency without their collision against the circuit wall even in the operation of a high order mode and a large current operation by planting an electrode on th...
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JP04137806 |
PURPOSE: To obtain a high power conversion efficiency by providing a Fabry- Perot resonator comprising a mirror with plural slot holes arranged in parallel and a mirror with plural grooves arranged in parallel to the oscillation tube. CO...
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JP04132143 |
PURPOSE: To restrain the synchronous oscillation of plural modes by providing plural emission belts whose radii are different, at a cathode. CONSTITUTION: The 1st and 2nd emission belts 11, 12 which are provided at a cone base shaped cat...
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JP04087964 |
PURPOSE: To prevent defect such as filament breakage, etc., due to vertical movement, etc., during storage/transport of magnetrons from happening, and improve the workability at the time of placing/taking out of contents by a method wher...
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JP04082139 |
PURPOSE: To finely correct the frequency deviation of an electromagnetic wave and the dislocation of an output electromagnetic-wave due to the deviation of arrangement of a mirror system or clue to the like by constructing a gyrotron in ...
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JP04051427 |
PURPOSE: To suppress electron emission from a skirt besides the band-shaped electron emission part certainly by installing a heat shield cylinder in the space between the internal circumferential wall of the skirt and a cathode support. ...
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JP04047645 |
PURPOSE: To suppress unstable operation by forming an auxiliary dielectric window in a collector part and installing a dummy road or an operation detecting part in the outside of the window. CONSTITUTION: Carrying out interaction with ex...
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JP04028148 |
PURPOSE: To enable the output of an electromagnetic wave beam having a Gaussian electromagnetic field distribution of an excellent high frequency trans mission characteristic by arranging a mode converter, a radiator to radiate a high fr...
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JP04022047 |
PURPOSE: To transmit millimeter waves without disturbing the basic mode of oscillation and also obtain electrical insulation by electrically insulating a collector electrode portion and an output window from each other using a slit porti...
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JP04019944 |
PURPOSE: To restrain generation of unnecessary modes by providing through the wall between a collector electrode and an output window slits such that the angle formed between the longitudinal direction of each slit and a pipe axis is les...
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JP04019945 |
PURPOSE: To obtain a variable-frequency gyrotron wherein oscillation is efficiently made in a plurality of oscillation modes by coaxially stacking a plurality of emission belts of different diameters in the cathode of an electron gun. CO...
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JP04009528 |
PURPOSE: To cool an inverter circuit and a magnetron, and prevent erroneous operation of a control circuit by providing on a conductive casing a conductive material guide for guiding air form a cooling fan and a partition plate for parti...
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JP04004594 |
PURPOSE: To make circuit design, which ensures decreased power loss and withstands noise inclusion by allowing a sensing means to sense the anode current as output controlling signal, and senses the charging current as soft start release...
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JP04004595 |
PURPOSE: To allow the cathode filament current to lie always within a certain allowable extent during operation by accommodating thermosensitive ferrite beads in a filter box on the input side of a magnetron, and fitting the beads on a w...
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JP04004593 |
PURPOSE: To prevent generation of abnormal sounds when oscillation is started, by feeding the On power to a switching element from a power supply in conformity to signal given by a signal output part. CONSTITUTION: When power is put on, ...
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JP03283381 |
PURPOSE: To invariably set the cathode filament current within the allowable range during an operation by providing a thermal ferrite bead near a magnetron, and inserting a wire connecting a cathode filament driving coil and the magnetro...
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JP03274802 |
PURPOSE: To simplify the device and to improve the reliability by providing a notch at a circular waveguide to guide an electromagnetic wave, reflecting the electromagnetic wave radiated from the notch on an annular mirror, and making th...
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JP03245440 |
PURPOSE: To enable the adjustments of the relative position of them and the inclination so that the adjustment of a magnetic field and the adjustment to the optimum position of the magnetic field may be done by providing an adjusting mec...
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JP03238734 |
PURPOSE: To carry out stable operation by unitedly forming a part folded toward inside in an emission belt end part and unitedly forming a knife edge par in the part folded inside which touches with the emission belt part in very small s...
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JP03229475 |
PURPOSE: To form a dielectric Cherenkov maser(DCM) having a small size and low power consumption by disposing a superconductor around a dielectric. CONSTITUTION: In a microwave oscillator having a cavity 4 for passing a relativistic elec...
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JP03192633 |
PURPOSE: To absorb electromagnetic waves leaking from a cavity sufficiently, stabilize electron beam current and prevent oscillation of unnecessary modes by constituting so that a beam tunnel has in its inside no cylindrical portions hav...
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JP03165423 |
PURPOSE: To suppress the unnecessary emission of electrons and to increase the operation efficiency by forming a heater in a ring form, providing a nose holder penetrating the central aperture of the heater, and holding a nose by the nos...
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JP03165424 |
PURPOSE: To enable a large power operation by forming a collector in a taper form making the diameter larger gradually to the lower stream side of the electron beams, and providing plural nozzles to spray a coolant to the outer wall of t...
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JP03074029 |
PURPOSE: To work for big output and high frequency for facilitating the transmission of a generated electromagnetic wave by providing a specific optical resonator, an electron beam supplying means and an output wave transmission line. CO...
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JP03037938 |
PURPOSE: To convert kinetic energy of electrons into electromagnetic wave energy efficiently by moving electrons in circle in a resonator with the same frequency as the inherent vibration frequency of the resonator by a magnetic field. C...
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JP03030241 |
PURPOSE: To suppress oscillation due to unnecessary modes to prevent damage of a cathode by covering surfaces opposite to a nose and a skirt of a cathode with an emission suppressing material layer. CONSTITUTION: Emission suppressing mat...
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JP03030240 |
PURPOSE: To simplify process of working and assembly to eliminate cracks of dielectrics due to difference in thermal expansion ratio by a method wherein conductors and dielectrics are periodically laminated in a pipe to constitute an ele...
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JP02265146 |
PURPOSE: To achieve high conversion efficiency by composing a high frequency circuit with a hollow resonator part and a travelling wave transmitting waveguide tube part directly connected with down stream beam of the resonator part and o...
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JP02239542 |
PURPOSE: To provide a quasi-optical gyrotron device, which can turn into large output and high frequency, by using a resonator consisting of a ring-shaped mirror and a flat mirror, and using a pencil-shaped revolving electron beam as ele...
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JP02223135 |
PURPOSE: To optimize the oscillation efficiency without depending on the current control of a magnetic coil and facilitate assembling by supporting one of two mirrors constituting an optical resonator, and providing an expansion wall to ...
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JP02220333 |
PURPOSE: To ensure improved performance with simplified device design by allowing easy and high-precision alignment of the center axis of a gyrotron oscillator tube and the magnetic axis of a superconducting magnet device without using a...
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JP02174040 |
PURPOSE: To make a DC power source unnecessary and prevent the heating by a resistance loss by constituting the collector coil of the gyrotron tube of a gyrotron device with a superconductor. CONSTITUTION: A superconductor made of a ring...
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JP02151267 |
PURPOSE: To prevent a power supply operation from becoming unstable by superposing first and third outputs, superposing second and fourth outputs, and supplying them to two loads. CONSTITUTION: Power supplies 2 and 3 are composed of a tr...
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JP02123637 |
PURPOSE: To absorb and dampen an electromagnetic wave leaking from the gap of a waveguide separation part with an electric wave absorbing body and preventing the electromagnetic wave from reaching an exhaust pump by providing the electri...
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JP02086031 |
PURPOSE: To suppress the leakage of microwaves and efficiently perform the exhaust of an output window section by connecting the inside gap of an insulating ring between a collector section and the output window section to a vacuum chamb...
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JP02065032 |
PURPOSE: To make it possible to control so that the oscillation characteristic of a competing mode is suppressed and that the oscillation of a main mode is generated in a stabilized manner by changing reflection phase from a resonance ca...
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JP02049333 |
PURPOSE: To enable operation on a large electric power in a high frequency band by mechanically integrating the center parts of two dielectric plates constituting a double window. CONSTITUTION: A small projection part 38 is formed on one...
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JP02030036 |
PURPOSE: To make it possible to restrain generation of undesirable high harmonic waves, particularly a fifth harmonic wave, and that of inversed impulse of a cathode, by locating the flange of a top hat in such a manner that its lower fa...
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JP01283742 |
PURPOSE: To make it possible to set specific sizes of clearances of separation parts of waveguides highly accurately in the phase of completion by setting the clearances to be separated electrically with a high accuracy with ceramics par...
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JP01276541 |
PURPOSE: To reduce the heat flux applied to a collector by generating the magnetic field in the opposite direction to the main magnetic field of a resonant cavity section on a solenoid near the resonant cavity section and generating the ...
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JP01235129 |
PURPOSE: To expand oscillatable frequencies by operating a power source feeding the power to an electron gun so that the ratio between the voltage across a cathode and a control electrode and the voltage across the control electrode and ...
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JP01187736 |
PURPOSE: To enable the predetermined gap size of a waveguide separation part to be set with high accuracy in a completion stage by hermetically sealing the waveguide separation part with a sealing ring having flexible parts and connectin...
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JP01187737 |
PURPOSE: To restrain a high-frequency circuit wall from deforming as well as make excellent exhaust efficiency attainable by providing an outer surrounding cylinder having a higher mechanical strength than that of copper and hermetically...
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JP01186735 |
PURPOSE: To prevent the overheat of a cathode via the attenuation of an electromagnetic wave power incident on MIG and enable long pulse and continuous operations by loading a beam tunnel with a circular waveguide made of a cylinder of g...
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JP01120737 |
PURPOSE: To realize a microwave tube utilizing the cyclotron motion of electrons by forming an operating space surrounded by a vane at the center of an anode cylinder and providing a cathode section with an outer shape larger than the in...
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JP01086430 |
PURPOSE: To make the promotion of high output or long hour in an oscillator performable easily and economically by using a liquid nitrogen cooling superconductive coil for a field generating coil of a high-frequency source, requiring a h...
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JP01035832 |
PURPOSE: To improve the stability of operation by making the electric field strength of the drift space of a circuit separator different from the electric field strength in the interaction space region of a low-speed wave circuit by at l...
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JP01027142 |
PURPOSE: To emit electromagnetic waves oscillated in a resonator to outside thereof effectively by furnishing a straight string of slots at either or both of the two mirrors constituting an optical resonator. CONSTITUTION: A resonator 2 ...
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JP01019649 |
PURPOSE: To make it possible to obtain a gyrotron capable of large power and high frequency oscillation by making a cylindrical resonant cavity in the constitution where ring-shaped superconductive line materials are arranged in the laye...
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JP63276851 |
PURPOSE: To improve the withstand voltage characteristic and enhance the reliability by forming the insulative resin layer of a capacitor part of a high voltage input terminal and cylindrical insulating flanges, which are provided protru...
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