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Patent Searching and Data


Matches 651 - 700 out of 1,989

Document Document Title
JPH04370626A
PURPOSE: To provide a cathode of a high-frequency radio wave generator which can reduce the unnecessary electron emission. CONSTITUTION: While a nose 7 and a skirt 8 are provided concentrically on both side surfaces of an emission belt 6...  
JPH04368752A
PURPOSE: To provide a gyrotron device capable of stable operation and preventing the hazard of equipment breakdown by absorbing the vibration of a collector part due to the boiling of a cooling water with a bellows so as not to transmit ...  
JPH04368753A
PURPOSE: To enable an exchange of an cavity resonator and obtain an arbitrary frequency only with the exchange at low cost by joining the cavity resonator and a beam drift part, together with a collector part, by flanges. CONSTITUTION: A...  
JPH04351836A
PURPOSE: To reduce effect of electric field concentration, and to prevent inhomogeneity of electron beam and oscillation of unnecessary mode by suppressing electron irradiation from the end part of an electron irradiation band by an auxi...  
JPH04129459U  
JPH04506883A  
JPH04334846A
PURPOSE: To enhance stability as well as to facilitate adjustment by making resonance frequency different between each resonator within a range from the vane at the input end or the output end of a slow-wave circuit to the vane at the po...  
JPH04332435A
PURPOSE: To provide a gyrotron device wherein reflecting-mirrors and the orbit of a beam are avoided so that an exhaust route for an electron-gun section may be separated from other regions so as to exhaust the gas from each of these reg...  
JPH04332434A
PURPOSE: To provide a gyrotron device which can be constructed in a compactsize because there is no need to additionally lay any pipe for each of cooling-medium paths even if each mirrors is heated when the gyrotron device is operated by...  
JPH04332433A
PURPOSE: To guide an electron beam of high quality in a gyrotron by arranging a cooled absorber in the proximity of the front of a quasi-optical element, and by absorbing at least one of strong secondary peaks caused by diffraction. CONS...  
JPH04296430A
PURPOSE: To generate an electromagnetic wave in a very high frequency region and its very short pulse with high frequency and broad band by transforming a laser light beam into an electron beam, and generating an electromagnetic wave by ...  
JPH0464131B2  
JPH0463498B2  
JPH04286837A
PURPOSE: To correct abnormal distribution of an electric field in the peripheral part of a cathode and smooth emitted electron beam by forming the peripheral part of the cathode of an electron gun of a microwave tube using an electron no...  
JPH04280043A
PURPOSE: To largely reduce the transfer of the heat generated by a collector section to a focusing magnetic field device section through a case substrate by providing a heat nonconductor between the focusing magnetic field device section...  
JPH0457060B2  
JPH0457059B2  
JPH04252601A
PURPOSE: To provide satisfactory transmitting characteristics over a wide fre quency range by tilting a disc to the propagating direction of a microwave so that an angle made by the propagating direction and the normal of the disc can be...  
JPH04101342U  
JPH04237922A
PURPOSE: To provide an oscillator which can oscillate VHF and is miniaturized. CONSTITUTION: A micro vacuum device, constructing an electronic beam user, supplying an electron beam focusing coil 4, an output coil 5, free electron beam os...  
JPH0453062B2  
JPH04230103A
PURPOSE: To almost eliminate reflection to a microwave incident side by forming a tapered mirror part respectively to the upper-stream of a diverter and the inside wall of a waveguide opposite to the upper-stream end so as to reduce the ...  
JPH04218240A
PURPOSE: To obtain an efficient device by making the respective resonance frequencies of an input cavity and a output cavity coincide with each other in a microwave tube gyro-klystron device. CONSTITUTION: Adjustment parts of an input ca...  
JPH04215232A
PURPOSE: To carry out an operation of a multi-beam microwave tube under a high frequency by making an electron-beam pass through cavity groups which consist of (n) pieces of cavities respectively, and driving the cavities which belong to...  
JPH04215233A
PURPOSE: To carry out operations of a multi-beam microwave tube under a high electric power and a high frequency by fixing a transmission line at a terminal wall of an output cavity, and arranging a collector around the transmission line...  
JPH0443371B2  
JPH04192240A
PURPOSE: To prevent oscillating operations and outputs thereof from being unstable due to spurious milli-waves by providing a milli-wave absorbing means absorbing spurious milli-waves generated by the circuit loss of a mode converter. CO...  
JPH0437536B2  
JPH04167335A
PURPOSE: To prevent efficiency of a millimetric wave generating device from lowering by forming a beam tunnel section provided between an electron gun section and a resonance circuit along a track of hollow-like electron beams, and makin...  
JPH0435868B2  
JPH0424594Y2  
JPH04155728A
PURPOSE: To prevent axial direction deformation due to thermal expansion in vacuum drawing by splitting an outer tube, which forms a water passage in a space to a collector, in such a manner that the split faces are superposed with each ...  
JPH04155727A
PURPOSE: To allow the vertical standing of a brazing rod in a hydrogen furnace by winding the lower end of a wire material on the upper end of a core rod to hold the core rod in a vertical standing condition from the ceiling of an inside...  
JPH04155729A
PURPOSE: To prevent the deterioration of the electron emission capacity of a cathode by varying an anode current on a step-by-step basis when changing over the output of magnetrons CONSTITUTION: When the output of magnetrons is changed o...  
JPH0461845U  
JPH04137439A
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...  
JPH04137806A
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...  
JPH04132143A
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...  
JPH0418416B2  
JPH0487964A
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...  
JPH0482139A
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 ...  
JPH0412580B2  
JPH0451427A
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. ...  
JPH0447645A
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...  
JPH047531B2  
JPH047532B2  
JPH044352Y2  
JPH0428148A
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...  
JPH0422047A
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...  
JPH0419945A
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...  

Matches 651 - 700 out of 1,989