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JP2002270029A |
To radiate heat generated from a microwave generator to the outside of a case, in a luminaire utilizing microwaves.In this luminaire utilizing microwaves, a transmissive block 151 for transmitting the heat generated in a microwave genera...
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JP2002530823A |
In a production system included in a power modulator for the protection of a load connected to the power modulator, comprising a charging system, a power impulse former, a control arrangement and a pulse transformer with a first protecti...
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JP2002530807A |
(57) [Summary] The present invention relates to a multi-beam electron tube configured around a spindle XX'. The substantially cylindrical cathodes 3 and 4 generate beams 1 and 2, and some 4 of the cathodes are offset with respect to the ...
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JP3326264B2 |
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JP2002529901A |
A high power switching apparatus comprises an annular cathode having a surface capable of emitting a hollow electron beam therefrom and an anode cavity spaced from said cathode. The cavity has an annular opening smaller in dimension than...
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JP3315516B2 |
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JP2002216651A |
To decrease an energy loss for energy saving, namely to improve an oscillation efficiency of a magnetron by increasing the rate of an output power to an input power of the magnetron.As the wire material of a spiral filament 14 which is a...
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JP3308739B2 |
PURPOSE: To provide a magnetron capable of preventing deformation of a positive electrode vein as well as restraining the uniformity of high frequency field strength in the vicinities of respective positions of the inner surface and the ...
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JP2002208356A |
To provide a magnetron in which the property effective for its oscillation can be obtained and quality can be improved, and assembly also can be made easily.This is a magnetron in which a cathode terminal lead wire that supports the cath...
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JP2002203488A |
To provide a multi-cavity klystron device capable of setting the frequency of a high-frequency input signal lower than an operation frequency.This multi-cavity klystron device is provided with an input cavity 12 for inputting the high-fr...
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JP2002197986A |
To provide a method of producing a magnetron, enabling positive airtight brazing of parts to be brazed to a stem insulator.A brazing material 23 is provided for hermetically brazing a joint metal plate 20 into which cathode leads 15a, 15...
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JP2002197985A |
To stabilize the characteristic of a periodic field converging linear beam microwave tube, improve the reliability of vacuum tightness and reduce the cost by lessening a dimensional error of a high frequency operating portion vacuum encl...
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JP2002197984A |
To provide a method of producing a magnetron, which can simply improve the performance of airtight welding.The method of producing the magnetron which consists of an anode vacuum container having an anode cylinder, a plurality of veins r...
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JP3300360B2 |
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JP3300750B2 |
To provide a traveling-wave tube having a stable RF output characteristic, by suppressing mismatching in an interface with an external Circuit. A coaxial circuit 30 comprises, in a divided manner, an RF take-out side coaxial circuit part...
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JP2002190257A |
To provide a method for manufacturing a magnetron which easily enhances the hermetic welding performance.The method for manufacturing the magnetron comprises, an anode vacuum container having an anode cylinder, a plurality of vanes dispo...
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JP3296622B2 |
PURPOSE: To provide a high quality magnetron, the productivity of which is not degraded due to the increase in the number of parts, which produces low harmonic noise, and which does not cause malfunction due to crack in an insulating cyl...
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JP3295838B2 |
To provide an end hat for a magnetron and a manufacturing method for end hats, in which a brazing material is incorporated with a good yield from production. This device includes end hat bodies 1 and 11 and brazing material 5 and 15, whe...
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JP3293605B2 |
To provide an electron gun having a field emission type cold cathode for preventing cracks in the second insulating membrane caused by excess stress on the focusing electrode and insulating membrane to secure the electrical reliability b...
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JP2002163992A |
To provide a magnetron wherein thermal contacts between a positive electrode cylindrical body and cooling fins as well as between the cooling fins and a yoke are ensured, letting the heat conduction and a life-time be improved.The plural...
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JP2002164751A |
To provide a traveling wave tube amplifier capable of improving input and output linearity when inputting a large RF signal, and reducing power consumption when inputting a small RF signal.In this traveling wave tube amplifier, a power s...
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JP2002163993A |
To provide a magnetron of a superior quality wherein a drift in a diameter direction of a focusing plate is prevented and performance improvements such as realization of a high efficiency and a high output of a magnetic circuit are made....
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JP2002163995A |
To provide a magnetron having a mass production property wherein an eccentricity of an antenna conductor is prevented at a time of cutting off a vacuum sealing.After the antenna conductor 4 is arranged in an exhaust pipe 11 and air in a ...
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JP2002163994A |
To provide a high quality magnetron wherein a performance of a hard soldering part is improved.A sealing metal 9 is arranged at an inner side soldering jig 23, a vacuum sealing member 22 of a lower part made of cylindrical silver solder ...
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JP2002157961A |
To provide a device capable of more excellently controlling the size, a space, symmetry and the other parameter in a smaller shape than being normally possible by a present technology.A device base board 10 has a cathode electrode 12, a ...
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JP2002157962A |
To provide a stem for a magnetron hardly causing failure such as a crack and a chip at lead mounting time.In this stem for the magnetron composed of columnar ceramics for supporting a pair of leads, a metallized layer forming surface of ...
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JP3283457B2 |
To obtain a miniaturized airtight high frequency window capable of providing an adequate microwave impedance in a simplified configuration by providing irises for terminal waveguides in the airtight high frequency window. A circular wave...
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JP3282602B2 |
To restrict the periodic expansion of the electron beam in the continuous periodic magnetic field by providing magnets for forming a magnetic field in parallel with a negative electrode and the center axis of an electrode while using the...
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JP2002136102A |
To prevent irreversible deterioration and breakdown of an SI thyristor, by surely preventing a reverse current flowing in the SI thyristor.A parallel part 14A, branched from a power feed line 16 for supplying a current to an SI thyristor...
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JP3278464B2 |
PURPOSE: To provide a magnetron for a microwave oven suppressing the fourth and fifth harmonics generated from a resonator, making the structure of an output section simple and easy to control, and having the oscillation frequency of 245...
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JP2002124195A |
To securely prevent discharge generated between a joint of a cylindrical metal vessel of a stem insulating body and that of cathode leads.A discharge-preventing member (a cylindrical conductor) 12 is provided between a joint 11 of a cyli...
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JP3276994B2 |
PURPOSE: To provide a power source device for gyrotron, for which low capacity and high efficiency are achieved. CONSTITUTION: The power of an acceleration power source is reduced, and high stabilization can be thereby achieved without i...
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JP3277215B2 |
PURPOSE: To prevent leakage of unnecessarily generated electronic wave from a work space part to an electric power input part comprising a center lead downward extended from an upper end shield in the work space part and a side lead arra...
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JP2002110053A |
To provide an improved gridded microwave tube equipped with a cold cathode, an anode, and a grid disposed between the anode and the cathode.In one embodiment, the cold cathode has a refractory metal substrate and carbon nanotube emitters...
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JP3272202B2 |
To provide a uniform plasma density distribution by providing a clearance in the center of the length of each of anisotropic segment columnar magnets in a dipole ring magnet, and setting the size of the clearance to match the place of th...
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JP3269904B2 |
PURPOSE: To inhibit internal stress by the resin mold of a high-voltage generating section while improving the effect of heat dissipation. CONSTITUTION: A power supply device for a travelling wave tube, in which a high-voltage generating...
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JP2002510034A |
The invention relates to a cooling arrangement for cooling an infrared detector. The cooling arrangement functions in an operational mode and a standby mode. In the operational mode, the infrared detector is cooled down to an operational...
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JP2002093332A |
To surely prevent a chock member restraining unwanted radiation of a microwave from discharge generated between a junction of a cylinder-shape metal case of a stem insulation body and a junction of a cathode lead.A ring-shape recessed gr...
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JP3268237B2 |
To enhance a repetitive frequency to take out an electron beam, and make it suitable for taking out an electron beam of high energy by embedding passages making a refrigerant flow to forcedly cool a conductive vessel in a wall of the con...
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JP3269191B2 |
PURPOSE: To stabilize operation even at driving time by connecting a high frequency driving input lead wire being bent respectively mutually in the opposite direction in an antenna shape to the tip parts of negative electrode terminals o...
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JP2002083553A |
To provide an electron gun structure for a microwave tube capable of shortening its manufacturing process.This electron gun structure for a microwave tube is equipped with a cathode electrode 12 for emitting an electron beam E, a Wehnelt...
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JP3266771B2 |
To provide slow-wave structure capable of increasing the heat radiation efficiency without causing unevenness on the heat conduction from a slow- wave serving as a heat source. This circuit is constituted of a vacuum container, a slow-wa...
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JP3267567B2 |
To improve economy, workability and maintainability by providing an anode part applied voltage switching circuit for switching dc voltage to be applied to an anode part of a microwave tube wall and a microwave tube to voltage higher than...
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JP2002075230A |
To make the output control of the microwave application device easily and correctly by preventing appearance of two wave crests in the occupied bandwidth.In the installation of the positive electrode member 2 which is installed on the in...
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JP2002075231A |
To provide a magnetron that has a simple structure and improves assembly precision.In the magnetron, an inclined soldering face 22, a fitting groove 26 and a step portion 27 are formed on the insulating cylinder body 21 for positioning t...
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JP3261726B2 |
PURPOSE: To facilitate the adjustment in the higher harmonic wave band and improve the low-noise performance by forming a resonance cavity, and forming the circular bottom face section of a choke blocking the specific high harmonic waves...
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JP2002506266A |
Both focusing screens (2) are placed on a cylindrical rod (4) and are electrically isolated from a secondary-electron emitter (1), while field-emission emitters (3) are located on both screens and are separated from each other by a vacuu...
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JP2002056785A |
To surely prevent a discharge generated between a junction section of a cylinder-like metal vessel of a stem insulator and a junction section of a cathode lead.A 1st groove 12, a 2nd groove 13, and a 3rd groove 14 are formed in junction ...
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JP2002056784A |
To surely prevent a discharge generated between a junction face of a cylinder-like metal vessel of a stem insulator and a junction face of a cathode lead.An annular groove 11 is formed in a junction face 10 of a cylinder-like metal vesse...
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JP2002056783A |
To provide a magnetron which can be certainly sealed inside of a metal vessel in a vacuum state by improving workability and ensuring brazing performance.The magnetron is constituted with an internal lead 8 in which a pair of cathode lea...
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