Patents
Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999)
10/1982
10/26/1982US4356430 Gyrotron cavity resonator with an improved value of Q
10/13/1982EP0062599A2 Slow wave structure for a backward wave oscillator tube
10/12/1982CA1133597A1 Backward wave oscillator tube for the production of microwaves
09/1982
09/14/1982US4349424 Ion sputter textured graphite
08/1982
08/18/1982EP0058039A2 Gyrotron device
08/17/1982US4345220 High power microwave generator using relativistic electron beam in waveguide drift tube
05/1982
05/25/1982US4331934 Cerenkov submillimeter electromagnetic wave oscillator
04/1982
04/20/1982CA1122322A1 Electron beam collector for a microwave power tube
04/13/1982US4324967 Microwave heating apparatus having magnetic coupling for driving the antenna
04/07/1982EP0049198A1 Electrons accelerator, and millimeter and infra-millimeter waves generator including the same
03/1982
03/31/1982EP0048648A1 Coupled cavities delay line for a travelling-wave tube, and travelling-wave tube comprising such a line
01/1982
01/26/1982US4313072 Light modulated switches and radio frequency emitters
12/1981
12/15/1981US4306174 Radio wave generator for ultra-high frequencies
12/02/1981EP0040998A1 Extended interaction oscillator
11/1981
11/10/1981US4300105 Two-cavity klystron oscillator
11/03/1981US4298824 Millimeter and sub-millimeter radiation source
10/1981
10/20/1981US4296354 Traveling wave tube with frequency variable sever length
10/06/1981US4293828 Arrangement for suppressing interference waves and harmonic waves in traveling wave tubes with a short circuiting slide in the output wave guide
09/1981
09/29/1981US4292567 In-band resonant loss in TWT's
09/08/1981US4288721 Microwave magnetron-type device
08/1981
08/25/1981US4286230 Near millimeter wave generator with dielectric cavity
08/18/1981US4284922 Linear beam microwave amplifier having section comprising three resonant coupled circuits two of which are resonant cavities which interact with the beam
08/04/1981CA1106456A1 High gain crossed field amplifier
06/1981
06/17/1981EP0030328A1 Multicavity klystron
06/16/1981US4274032 High power liquid cooled double strapped vane type magetron
04/1981
04/21/1981US4263566 Backward wave oscillator tube utilizing successive delay line sections for increased power
04/14/1981CA1099348A1 Method and apparatus for reducing noise in crossed- field amplifiers
03/1981
03/03/1981CA1096970A1 Radio-frequency electron accelerator
01/1981
01/20/1981US4246512 Co-axial multi cavity anode magnetrons
01/07/1981EP0022016A1 Slow-wave structure with varying pitch for a travelling-wave tube, and travelling-wave tube using such a slow-wave structure
12/1980
12/10/1980EP0020209A1 Travelling-wave tube provided with a microwave delay line structure comprising a conductor with variable cross-section
11/1980
11/27/1980WO1980002621A1 Electrovacuum shf device
11/04/1980US4232249 Beam-switched traveling wave tube
10/1980
10/21/1980US4229677 High-power hyperfrequency emission tube
10/01/1980EP0016345A1 Device for suppressing interfering and harmonic waves in travellingwave tubes with a choke piston in the output waveguide
09/1980
09/30/1980US4225806 Generator of meter- or decimeter-long waves
09/30/1980CA1086862A1 Lossless traveling wave booster tube
09/23/1980US4224576 Gyrotron travelling-wave amplifier
08/1980
08/26/1980US4219758 Traveling wave tube with non-reciprocal attenuating adjunct
08/07/1980WO1980001622A1 Amplifying klystron
07/1980
07/29/1980US4215291 Collective particle accelerator
07/22/1980CA1082202A1 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds
07/09/1980EP0013242A1 Generator for very high frequency electromagnetic waves
07/01/1980US4210845 Trirotron: triode rotating beam radio frequency amplifier
06/1980
06/26/1980WO1980001332A1 Method and device for correction of phase shift in amplifying multi-cavity klystron
06/24/1980US4209755 Tunable oscillator comprising dual-cavity klystron
06/10/1980US4207495 Means for improving the collector efficiency of an emitting sole crossed field amplifier
05/1980
05/20/1980US4204138 Permanent magnet-containing magnetron
04/1980
04/29/1980US4200821 Relativistic electron beam crossed-field device
04/29/1980US4200820 High power electron beam gyro device
04/08/1980US4197483 Submillimeter wave generation using surface acoustic waves in piezoelectric materials
03/1980
03/19/1980EP0008896A1 An output section for a microwave amplifier, a microwave amplifier and a circuit for use in a microwave amplifier
03/04/1980CA1073110A1 Co-axial magnetrons
02/1980
02/19/1980US4189660 Electron beam collector for a microwave power tube
02/19/1980US4189441 A ruthenium carbonyl catalyst and an inorganic or tetraalkylammonium iodide or bromide promoter
09/1979
09/25/1979CA1063245A2 Resonant cavity magnetron having a helical cathode
09/18/1979US4168451 Multi-cavity klystron amplifiers
08/1979
08/28/1979US4165949 High efficiency split flow turbine for compressible fluids
05/1979
05/01/1979CA1053799A1 Magnetron employing a permanent magnet of a manganese-aluminium-carbon system alloy
04/1979
04/17/1979US4150340 High-power microwaves from a non-isochronous reflecting electron system (NIRES)
04/10/1979US4149107 Backward wave oscillator tube for the production of microwave
04/03/1979US4147956 Wide-band coupled-cavity type traveling-wave tube
02/1979
02/07/1979EP0000672A1 Meter or decimeter waves generator formed by a resonant structure coupled to a hollow electron beam.
10/1978
10/24/1978US4122372 Dielectrically loaded waveguide for producing high power coherent microwave radiation
10/03/1978CA1039797A1 Electron beam electrical power transmission system
08/1978
08/29/1978CA1037216A2 Cuspated sheets
08/15/1978US4107572 Traveling-wave tube having phase velocity tapering means in a slow-wave circuit
08/08/1978US4105951 Multipactor discharge arrangements
08/08/1978US4105913 Core magnetron and method of manufacturing permanent magnets therefor with low gas emission
07/1978
07/11/1978US4100458 Multipactor discharge tuned co-axial magnetrons
07/11/1978US4100457 Velocity modulation tubes employing harmonic bunching
07/04/1978US4099094 Electronic tube of magnetron type operating as a oscillator or an amplifier
07/04/1978US4099093 Electronic tube for generating millimetric wave pulses
05/1978
05/02/1978US4087718 High gain crossed field amplifier
04/1978
04/04/1978US4082979 Method and apparatus for reducing noise in crossed-field amplifiers
02/1978
02/14/1978US4074169 Magnetron with harmonic frequency output suppression
12/1977
12/06/1977US4061767 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds
10/1977
10/11/1977US4053810 Lossless traveling wave booster tube
07/1977
07/26/1977US4038602 Automodulated realtivistic electron beam microwave source
07/12/1977US4035688 Electronic tunable microwave device
06/1977
06/07/1977US4028583 High power-double strapped vane type magnetron
05/1977
05/31/1977US4027193 Klystron-resonant cavity accelerator system
05/24/1977US4025599 Thermoplastic
04/1977
04/19/1977US4019089 Wideband multi-cavity velocity modulation tube
04/19/1977US4019088 Electrovacuum SHF apparatus
11/1976
11/02/1976US3989979 Magnetron employing a permanent magnet formed of a manganese-aluminum-carbon system alloy
10/1976
10/19/1976US3987333 Magnetron comprising a radially magnetized permanent magnet and an axially magnetized permanent magnet
09/1976
09/21/1976US3982152 Cascade crossed field device
09/14/1976US3980920 Multi-resonator microwave oscillator
08/1976
08/10/1976US3974417 Four-cavity velocity modulation tube
07/1976
07/27/1976US3971966 Planar ring bar travelling wave tube
06/1976
06/29/1976US3967154 Magnetron having horizontally blown type radiator
05/1976
05/18/1976US3958148 Radio frequency noise generating magnetron
05/04/1976US3955019 Cuspated sheet forming
04/1976
04/27/1976US3953759 Interdigital slow wave circuit for electron tubes
03/1976
03/16/1976US3944872 Radio frequency noise generating magnetron
03/02/1976US3942066 Velocity modulation tube including a high resonance-frequency floating prebuncher having a q-value lower than a low resonance-frequency input cavity
02/1976
02/24/1976US3940656 High frequency tube apparatus
02/10/1976US3938056 Method and apparatus for enhancing the output from a traveling wave tube
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