Patents
Patents for H01J 25 - Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (1,999)
02/1986
02/18/1986US4571524 Electron accelerator and a millimeter-wave and submillimeter-wave generator equipped with said accelerator
02/13/1986WO1986001032A1 Microwave electron gun
01/1986
01/28/1986US4567452 Broad-band beam buncher
01/28/1986US4567406 High-gain Klystron-tetrode
01/28/1986US4567402 Electron beam injection device for an ultra-high frequency radio electric wave generator
01/07/1986US4563615 Ultra high frequency radio electric wave generators
12/1985
12/31/1985US4562380 Tilt-angle electron gun
12/17/1985US4559476 Radio-frequency amplifier
12/17/1985US4559475 For generating millimeter/submillimeter electromagnetic radiations
12/10/1985US4558258 Klystron unit
12/10/1985US4558256 Velocity tapering of comb-quad traveling-wave tubes
12/03/1985USH6 Generation of a modulated IREB with a frequency tunable by a magnetic field
11/1985
11/19/1985US4554484 Complex cavity gyrotron
11/19/1985US4554483 Active circulator gyrotron traveling-wave amplifier
11/12/1985US4553068 High power millimeter-wave source
10/1985
10/29/1985US4550271 Gyromagnetron amplifier
10/22/1985US4549111 VHF radioelectric wave generator
08/1985
08/06/1985US4533875 Wide-band gyrotron traveling-wave amplifier
07/1985
07/23/1985US4531104 Tunable magnetron of the coaxial-vacuum type
07/23/1985US4531103 Multidiameter cavity for reduced mode competition in gyrotron oscillator
07/23/1985US4531076 Electron beam stimulated electromagnetic radiation generator
07/02/1985US4527094 Altitude compensation for frequency agile magnetron
07/02/1985US4527091 Density modulated electron beam tube with enhanced gain
06/1985
06/19/1985EP0144317A1 Grid structure for certain plural mode electron guns.
05/1985
05/28/1985US4520293 High frequency amplifier
05/21/1985US4518932 Coaxial magnetron having cavity walls vibrated by tuning fork
05/15/1985EP0141525A2 Gyrotron device
04/1985
04/23/1985US4513223 Electron tube with transverse cyclotron interaction
04/02/1985US4508992 Microwave amplifier tube having two ring resonators
03/1985
03/19/1985US4506190 Linear beam tube with reflected electron trap
03/06/1985EP0133771A2 Cathode driven crossed-field amplifier
01/1985
01/29/1985US4496876 Frequency-spreading coupler
01/15/1985US4494039 Gyrotron traveling-wave device including quarter wavelength anti-reflective dielectric layer to enhance microwave absorption
01/03/1985WO1985000074A1 Grid structure for certain plural mode electron guns
01/02/1985CA1180446A Twt slow-wave structure assembled from three ladder- like slabs
01/01/1985US4491765 Quasioptical gyroklystron
11/1984
11/27/1984CA1178710A1 Mode suppression means for gyrotron cavities
11/21/1984EP0125530A2 High-gain klystrode
11/14/1984EP0125167A1 High-power amplifying klystron for feeding a variable load
11/13/1984US4482843 Gyrotron device
11/07/1984EP0124396A1 Electron beam injection device for a microwave generator
11/07/1984EP0124395A1 Electron gun for microwave generators
10/1984
10/30/1984US4480234 Gyrotron backward wave oscillator device
10/30/1984US4480210 Gridded electron power tube
10/24/1984EP0122834A1 Microwave propagation-mode transformer
10/17/1984EP0122186A1 Microwave generator
09/1984
09/26/1984EP0119902A1 Microwave cavity resonator, especially for electromagnetic energy generators
09/25/1984CA1175144A1 Collector-output for hollow beam electron tubes
09/11/1984CA1174358A1 Active dielectric waveguide amplifier or oscillator using a high density charged particle beam
08/1984
08/21/1984CA1173120A1 Extended interaction microwave oscillator
08/14/1984US4465953 Rippled-field magnetron apparatus
07/1984
07/03/1984CA1170365A1 Gyrotron with improved stability
06/1984
06/26/1984US4456851 Electron tube having a low impedance reduced stress anode structure
06/26/1984CA1169966A1 Ladder supported ring bar circuit
06/26/1984CA1169965A1 Gyrotron transverse energy equalizer
06/05/1984US4453108 Device for generating RF energy from electromagnetic radiation of another form such as light
05/1984
05/29/1984CA1168361A1 Microwave delay line incorporating a conductor with a variable cross-section for a travelling-wave tube
05/15/1984CA1167568A1 In-band resonant loss in twt's
05/08/1984CA1167161A1 Gyrotron cavity resonator with an improved value of q
05/08/1984CA1167120A1 High power gyrotron (osc) or gyrotron type amplifier using light weight focusing for millimeter wave tubes
04/1984
04/24/1984US4445071 Circular beam deflection in gyrocons
04/24/1984US4445070 Electron gun for producing spiral electron beams and gyrotron devices including same
03/1984
03/27/1984US4439746 Extended interaction microwave oscillator including a sucession of vanes with orifices
03/20/1984CA1164091A1 Traveling wave tube with frequency variable sever length
02/1984
02/21/1984US4433228 Microwave plasma source
02/14/1984US4431944 Delay line having coupled cavities for a traveling-wave tube and a traveling-wave tube equipped with said line
12/1983
12/20/1983US4422045 Barnetron microwave amplifiers and oscillators
12/20/1983US4422012 Ladder supported ring bar circuit
12/13/1983US4420710 Co-axial magnetrons
11/1983
11/22/1983US4417175 Ion sputter textured graphite electrode plates
11/08/1983US4414486 Coupled cavity type traveling wave tube
11/02/1983EP0092790A1 Klystron unit
11/01/1983US4413208 High gain crossed field amplifier tube and radio transmission system equipped with such a tube
11/01/1983US4413207 Multicavity klystron
10/1983
10/25/1983US4412150 Maser
10/18/1983US4410833 Solid state magnetron
10/04/1983CA1154867A1 Helix traveling wave tubes with reduced gain variation
08/1983
08/30/1983US4401918 Klystron having electrostatic quadrupole focusing arrangement
08/09/1983US4398121 Mode suppression means for gyrotron cavities
07/1983
07/26/1983US4395656 Gyrotron transmitting tube
07/26/1983US4395655 High power gyrotron (OSC) or gyrotron type amplifier using light weight focusing for millimeter wave tubes
07/12/1983US4393332 Gyrotron transverse energy equalizer
07/05/1983US4392079 Method of adjusting phase shift in amplification multicavity klystron and device therefor
07/05/1983US4392078 Electron discharge device with a spatially periodic focused beam
06/1983
06/29/1983EP0082769A1 Frequency multiplier
06/21/1983US4389593 Active dielectric waveguide amplifier or oscillator using a high density charged particle beam
06/14/1983US4388555 Gyrotron with improved stability
04/1983
04/26/1983US4381475 Variable coupling resistance delay line for crossed field tube
03/1983
03/29/1983US4378512 Helix type traveling wave tube
03/22/1983US4377770 Microwave delay line incorporating a conductor with a variable cross-section for a travelling-wave tube
03/16/1983EP0074173A1 Improvements in or relating to magnetrons
03/15/1983US4376908 Impedance tapered dematron
02/1983
02/22/1983CA1141859A1 High power electron beam gyro device
02/01/1983US4371852 Variable pitch delay line for travelling-wave tube and travelling-wave tube equipped with such a line
01/1983
01/25/1983US4370621 High efficiency gyrotron oscillator and amplifier
01/12/1983EP0069426A2 Microwave amplifier tube with two ring resonators
01/11/1983CA1139444A1 Traveling wave tube with non-reciprocal attenuating adjunct
12/1982
12/07/1982US4362968 Slow-wave wideband cyclotron amplifier
11/1982
11/30/1982CA1136764A1 Trirotron: triode rotating beam radio-frequency amplifier
11/09/1982US4358704 Helix traveling wave tubes with reduced gain variation
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