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JPH0453062B2 |
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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 ...
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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...
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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...
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JPH0443371B2 |
An electron gun of the type comprising two electrodes facing each other and brought to different potentials so as to create therebetween a continuous electric field and a cathode positioned in the extension of the electrode at negative o...
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JPH0437536B2 |
An electron-beam tube for generating high microwave power at high frequencies comprises a fast-wave circuit such as a hollow waveguide. The circuit wave has a component of electric field perpendicular to its propagation axis. This field ...
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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...
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JPH0435868B2 |
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JPH0424594Y2 |
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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 ...
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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...
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JPH0461845U |
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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...
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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...
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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...
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JPH0418416B2 |
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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...
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JPH0412580B2 |
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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. ...
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JPH047531B2 |
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JPH047532B2 |
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JPH044352Y2 |
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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...
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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...
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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...
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JPH0419944A |
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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JPH049528A |
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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JPH041453B2 |
In a crossed-field amplifier tube, an input section of slow-wave circuit (24) is part of the cathode electrode (10). An output section of slow-wave circuit (52) is part of the anode electrode (16). The anode circuit is axially displaced ...
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JPH044593A |
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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JPH0378736B2 |
In the last section of a delay line having coupled cavities for a traveling-wave tube, the following parameters are progressively increased in the direction of propagation of the electron beam: the diameter of the opening provided for th...
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JPH03274802A |
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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JPH03116552U |
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JPH0369134B2 |
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JPH03229475A |
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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JPH0361297B2 |
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JPH03504187A |
The converter consists of a section (1) of a non-regular waveguide provided on its internal surface with a plurality of interconjugating and interchanging SHF focusing and dispersing mirrors (2, 3) located along the axis (6) of the secti...
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JPH0360138B2 |
A frequency agile magnetron employs an altitude compensation vacuum envelope external to the vacuum envelope of the magnetron. The tuning assembly of the magnetron includes a tuning plunger coupled through a first bellows assembly to one...
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JPH03503818A |
PCT No. PCT/FR90/00059 Sec. 371 Date Sep. 13, 1990 Sec. 102(e) Date Sep. 13, 1990 PCT Filed Jan. 26, 1990 PCT Pub. No. WO90/09029 PCT Pub. Date Aug. 9, 1990.The invention relates to a device for producing microwave energy from an electro...
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JPH03192633A |
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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JPH03187127A |
PURPOSE: To amplify a high frequency by forming an array of field emission cathode bodies, and a grid body structure formed out of a plurality of grid electrodes isolated from the cathode bodies and insulated from each other on a substra...
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JPH03179641A |
PURPOSE: To symmetries a part in close vicinity to an interactive space of an anode structure, and obtain excellent performance by making the outside ends of respective anode vanes exist at almost same outside radial distance from the ce...
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JPH03165424A |
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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JPH0345858B2 |
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JPH03152831A |
PURPOSE: To apply a quasi-optical gyrotron to the installation of a layered beam gun by providing two mirrors of a resonator opposite to each other and moving the two mirrors, which have been synchronized with a desired frequency, on an ...
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JPH0336267B2 |
A gyrotron device including an electron gun for emitting a hollow electron beam, solenoid coils for generating magnetic fields so as to produce a cyclotron movement to the electron beam emitted from the electron gun, a plurality of ring ...
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JPH0324591Y2 |
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JPH03502272A |
PCT No. PCT/FR89/00002 Sec. 371 Date Jul. 13, 1990 Sec. 102(e) Date Jul. 13, 1990 PCT Filed Jan. 6, 1989 PCT Pub. No. WO89/06869 PCT Pub. Date Jul. 27, 1989.The present invention is directed to a mode transformer for a microwave energy t...
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JPH0332849B2 |
The ratio b/a of the width a of the forward end surface 30a of each vane 30 to the interval b between the opposed forward end portions of the respective adjacent vanes 30 is set to be not more than 2.3, whereby distribution density of a ...
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JPH0330256B2 |
A gyrotron cavity resonator is connected smoothly and directly to an output waveguide with a very gradually tapered wall so that values of external Q lower than twice the diffraction limit are obtainable.
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JPH0389432A |
PURPOSE: To realize high beam output and high efficiency by forming a cathode in a circle with a plurality of segments having different radiation powers. CONSTITUTION: A cathode 2 is formed in a ring with low radiation power segments 11a...
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