Patents
Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921)
01/1981
01/07/1981EP0022016A1 Slow-wave structure with varying pitch for a travelling-wave tube, and travelling-wave tube using such a slow-wave structure
01/06/1981US4243961 Apparatus for selecting the resonance frequency of a microwave device comprising a plurality of cavities
01/06/1981US4243915 Delay line comprising coupled cavities and cooled by fluid-circulation
01/06/1981US4243914 Circulating fluid cooled delay line for high frequency tubes, and high frequency tubes having such a delay line
12/1980
12/10/1980EP0020262A1 Isolated-collector assembly for power tubes and tube comprising such a collector
12/10/1980EP0020253A1 Insulated collector for an electronic power tube
12/10/1980EP0020218A1 Radiation-cooled multistage depressed collector for a microwave tube and microwave tube comprising such a collector
12/10/1980EP0020209A1 Travelling-wave tube provided with a microwave delay line structure comprising a conductor with variable cross-section
12/02/1980US4237402 Slow-wave circuit for traveling-wave tubes
11/1980
11/18/1980US4234855 System for linearly tuning a microwave oscillator
11/12/1980EP0018724A1 Spin-tuned magnetron
11/11/1980US4233540 Magnetron for microwave oven
11/11/1980US4233539 Aluminum carbide or boride or boron carbide coating on copper electrode
11/04/1980CA1088992A1 Traveling wave deflector for electron beams
10/1980
10/28/1980US4230968 Cathode structure for magnetrons
10/28/1980CA1088670A1 Microwave tube assembly
10/21/1980US4229676 Helical slow-wave structure assemblies and fabrication methods
10/07/1980US4227116 Zero-bias gridded gun
09/1980
09/30/1980US4225806 Generator of meter- or decimeter-long waves
09/17/1980EP0015449A1 Gas tight microwave window in a coaxial line, especially for travelling-wave tubes
09/17/1980EP0015448A1 Vacuum tight microwave window in a coaxial line, especially for travelling-wave tubes
09/16/1980US4223246 Microwave tubes incorporating rare earth magnets
09/16/1980US4223245 Magnetron device exhibiting reduced microwave leakage
09/16/1980US4223243 Tube with bonded cathode and electrode structure and getter
09/16/1980CA1085907A1 Thermionic electron source with bonded control grid
08/1980
08/26/1980US4219758 Traveling wave tube with non-reciprocal attenuating adjunct
08/07/1980WO1980001622A1 Amplifying klystron
08/06/1980EP0014128A1 A device to make an electrical and thermal contact between several metallic surfaces, and utilisation thereof
08/05/1980US4216409 Multi-cavity klystron device
07/1980
07/22/1980CA1082202A1 Cyano acetic acid anilide derivatives, process for their manufacture and compositions containing these compounds
07/15/1980US4212423 Magnetron anode manufacture
07/09/1980EP0013212A1 Manufacturing method for a microwave delay line
07/09/1980EP0013205A1 Microwave delay line and travelling-wave tube utilizing same
07/09/1980EP0013201A1 Directly heated cathode and high frequency electron tube comprising such a cathode
07/08/1980US4211954 Alternating phase focused linacs
07/01/1980CA1080790A1 Method of making a high current density long life cathode
06/1980
06/17/1980US4208706 Switching regulator
06/11/1980EP0012034A1 Variable frequency magnetron
06/10/1980US4207496 Microwave output section of an internal magnet type magnetron
06/10/1980US4207495 Means for improving the collector efficiency of an emitting sole crossed field amplifier
06/10/1980US4207494 Microwave tubes provided with permanent magnet type magnetic circuits
06/10/1980US4207492 Slow-wave high frequency deflection structure
06/03/1980CA1078962A1 Magnetron slot mode absorber
05/1980
05/27/1980US4205257 Magnetron strap ring structure
05/27/1980US4205256 Magnetron supporting structure
05/27/1980US4205250 Electronic tubes
05/20/1980US4204138 Permanent magnet-containing magnetron
04/1980
04/29/1980US4200217 Method of manufacturing an article having a press-worked member inwardly of a cylindrical member
04/22/1980US4199709 Injection of an electron beam
04/16/1980EP0009903A1 Spin tuned magnetron
04/16/1980EP0009574A1 Travelling-wave tube comprising a helical slow-wave circuit and method of manufacturing same
03/1980
03/18/1980US4194142 Mode control apparatus for a separable-insert coaxial magnetron
03/04/1980CA1073110A1 Co-axial magnetrons
02/1980
02/21/1980WO1980000282A1 Zero-bias gridded gun
02/19/1980US4189660 Electron beam collector for a microwave power tube
02/05/1980US4187444 Open-circuit magnet structure for cross-field tubes and the like
01/1980
01/22/1980US4185225 Traveling wave tube
01/10/1980WO1980000049A1 Travelling wave tube arrangements
12/1979
12/18/1979US4179639 Anode assembly for electron discharge devices
12/11/1979US4178533 Microwave delay line for travelling wave tube
12/11/1979CA1068003A1 Tunable magnetron
12/11/1979CA1068002A1 Resonant cavity magnetron with choke structure for reducing harmonics in output system
12/04/1979US4177402 Magnetron pole piece assembly
11/1979
11/20/1979US4175245 Magnetron magnet assembly
11/06/1979US4173744 Impedance matched coupling device for microwave tubes
10/1979
10/30/1979CA1065487A1 Magnetron filter
10/03/1979EP0004492A2 Microwave tube containing a delay line cooled by a circulating fluid
10/02/1979US4169987 Magnetron tubes cathode support
10/02/1979CA1063728A1 Dual mode gridded gun
09/1979
09/25/1979CA1063244A1 Resonant cavity magnetron having a helical cathode
08/1979
08/28/1979US4166235 Magnetron comprising ferromagnetic material members axially magnetized in opposite directions
08/28/1979US4165949 High efficiency split flow turbine for compressible fluids
08/21/1979US4165473 Electron tube with dispenser cathode
08/14/1979US4164685 Magnetron device
08/14/1979US4164684 Magnetrons
08/07/1979US4163922 Magnetrons
07/1979
07/31/1979US4163175 Magnetron for which leakage of H.F. noise is minimized
06/1979
06/19/1979US4158791 Helix traveling wave tubes with resonant loss
06/14/1979WO1979000329A1 Magnetron
06/12/1979US4158154 Delay line for transit time amplifier tubes
05/1979
05/29/1979US4156829 Apparatus for suppressing radiation leakage in a magnetron circuit
05/22/1979US4156163 Coupled cavity structure
05/08/1979US4153859 Travelling wave tube with a helical delay line
05/01/1979CA1053799A1 Magnetron employing a permanent magnet of a manganese-aluminium-carbon system alloy
05/01/1979CA1053798A1 Multiperiodic linear accelerating structures
04/1979
04/03/1979US4147955 Travelling wave tubes
04/03/1979US4147953 Cathode construction for linear beam tubes
04/03/1979US4146949 Method for making a magnetron anode
03/1979
03/20/1979US4145635 Electron emitter with focussing arrangement
03/13/1979CA1050659A1 Magnetron with radially magnetized magnets and built-in pole shoes
03/06/1979US4143341 Delay line for traveling wave tubes, in particular to the amplification of mm waves
03/06/1979US4143300 Spin tuned magnetrons
03/06/1979US4143295 Cathode structure for an electron tube
02/1979
02/07/1979EP0000672A1 Meter or decimeter waves generator formed by a resonant structure coupled to a hollow electron beam.
02/06/1979US4138625 Helix type travelling-wave tube amplifier
01/1979
01/30/1979US4137482 Periodic permanent magnet focused TWT
01/30/1979US4136733 Heating device
01/10/1979EP0000309A1 Hollow-beam generator producing monokinetic electrons along helicoidal paths
01/02/1979US4132921 Megnetrons getter
12/1978
12/26/1978US4131825 Ditherable and tunable magnetron comprising axially tuning and rotational tuning members
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