Patents
Sitemap › H01 - Basic electric elements › H01J - Electric discharge tubes or discharge lamps › H01J 23 - Details of transit-time tubes of the types covered by group
Patents for H01J 23 - Details of transit-time tubes of the types covered by group (3,921)
07/1990
07/12/1990WO1990007800A1 Converter of higher-order wave of a round waveguide into a mirror-type transmission line wave
07/04/1990EP0376827A1 Electron beam tube partially cooled by direct radiation
06/1990
06/28/1990DE3843255A1 Travelling-wave tube
06/27/1990CN1008539B Apparatus for thermal treatment specially for drying of leather and like
06/21/1990DE3941055A1 Low-ripple regulated current supply circuit for magnetron - derives smoother output current from rectification of negative-going half-cycles of three=phase mains voltage
06/20/1990CN1043224A Microcomputer control frequency quickly varying magnetron and technique
06/13/1990EP0372975A2 Couplers for extracting RF power from a gyrotron cavity directly into fundamental mode waveguide
06/12/1990US4933594 Electron collector for electron tubes
06/12/1990CA1270329A1 Wide-band extended interaction device
06/05/1990US4931695 High performance extended interaction output circuit
06/05/1990US4931694 Coupled cavity circuit with increased iris resonant frequency
05/1990
05/29/1990US4929418 Method of making a cathode from tungsten powder
05/16/1990EP0368729A1 Vacuum-tight window for a microwave tube, and microwave tube with a window
05/15/1990US4926093 Gyrotron device
05/09/1990EP0367155A2 Extremely high frequency oscillator
05/02/1990EP0366428A2 Magnetron tuning systems
04/1990
04/20/1990CA2001067A1 Re-entrant double-staggered ladder circuit
04/18/1990EP0364335A1 Travelling-wave tube with a gas-tight coupling arrangement between its slow-wave circuit and an external microwave circuit
04/17/1990US4918049 Critical temperature; supercooling
04/05/1990DE3833604A1 Pulsed particle source on the basis of rapidly repolarisable ferroelectrics
04/04/1990EP0362021A1 Fly-path correction device in an electron tube
04/04/1990EP0361047A2 Travelling wave tube
04/04/1990CN1041060A High-voltage through-type ceramic capacitor
03/1990
03/27/1990US4912367 Plasma-assisted high-power microwave generator
03/15/1990DE3830975A1 Multistage collector
03/13/1990US4908549 Motor-driven device for preadjusted frequency tunings for a klystron
03/06/1990US4906896 Disk and washer linac and method of manufacture
02/1990
02/28/1990EP0356337A1 Protection device for a delay line modulator
02/27/1990US4904362 Bar-shaped magnetron or sputter cathode arrangement
02/13/1990US4900985 High-voltage input terminal structure of a magnetron for a microwave oven
02/13/1990US4900973 Electron tube sealing structure
02/06/1990US4899113 Switching helix power supply for a TWT
01/1990
01/31/1990EP0352961A1 Klystrode frequency multiplier
01/30/1990US4897609 Axially coupled gyrotron and gyro TWTA
01/17/1990EP0351263A1 Electron source structure and its use in tubes emitting electromagnetic waves
01/10/1990EP0350360A1 Frequency-agility magnetron with a tuning motor using enhanced cooling
01/10/1990EP0350358A1 Electron gun and electron tube including such an electron gun
01/03/1990EP0348689A2 High-voltage through-type ceramic capacitor
01/02/1990US4891557 Magnetron device
01/02/1990US4891556 Coupled-cavity delay line for traveling-wave tube
12/1989
12/28/1989WO1989012906A1 Coupled cavity circuit with increased iris resonant frequency
12/27/1989EP0347624A1 Method of fabricating a travelling-wave tube delay line
12/26/1989US4890036 Miniature traveling wave tube and method of making
12/19/1989US4888520 Magnetron
12/14/1989WO1989012311A1 High performance extended interaction output circuit
12/12/1989US4887058 Periodic permanent magnet structures
12/06/1989EP0344236A1 Electron cyclotron resonance plasma source
12/05/1989US4885470 Integrally formed radio frequency quadrupole
11/1989
11/30/1989WO1989011754A1 High gain miniature crossed-field amplifier
11/30/1989DE3827411C1 Hollow-beam electron gun for generating a hollow electron beam having low-scattering transverse velocity component
11/29/1989EP0343886A2 Circuit arrangements
11/29/1989EP0343212A1 Method and apparatus for manufacturing slow-wave structures for traveling-wave tubes
11/21/1989US4882666 High frequency high voltage power supply with controlled output power
11/08/1989EP0341107A1 Travelling-wave tube with a coupling arrangement between its delay line and external microwave circuits
11/02/1989EP0339374A1 A magnetron
10/1989
10/25/1989EP0338326A2 Travelling-wave tube with confined-flow periodic permanent magnet focusing
10/19/1989WO1989010000A1 Plasma-assisted high-power microwave generator
10/18/1989EP0243399B1 Precision coining method and coined helix assembly
10/11/1989EP0336850A1 Linear accelerator with self-focalising cavities, with high electron capture rate at low injection voltages
10/03/1989USH693 PYX twister with superconducting confinement
10/03/1989US4872085 Through-type capacitor with improved anti-tracking performance
10/03/1989US4871950 Wide band device for coupling between the delay line of a travelling wave tube and the external circuit transmitting the energy of the tube
09/1989
09/19/1989US4868509 Method and apparatus for detecting magnetron power supply failure
09/12/1989US4866343 Re-entrant double-staggered ladder circuit
08/1989
08/29/1989US4862128 Field adjustable transverse flux sources
08/29/1989US4862126 Superconducting shielded PYX PPM stacks
08/29/1989US4862034 Structure of anode of magnetron and a method of manufacturing the same
08/29/1989US4862031 Magnetron cathode structure
08/29/1989US4861752 High-field permanent-magnet structures
08/24/1989DE3804513A1 Method for producing a travelling-wave tube and device for carrying out the method
08/23/1989EP0329269A1 Cathodes for magnetrons
08/22/1989US4859976 Periodic permanent magnet structures
08/22/1989US4859973 Superconducting shielded PYX PPM stacks
08/22/1989US4859907 Traveling-wave tube with damping of undesired frequencies
08/15/1989US4858095 Magnetron drive apparatus
08/09/1989EP0327116A1 Magnetron
08/08/1989US4855645 Magnetron for microwave oven
08/08/1989US4855644 Crossed double helix slow-wave circuit for use in linear-beam microwave tube
07/1989
07/25/1989US4851736 Helical waveguide to rectangular waveguide coupler
07/25/1989US4851629 High-frequency heating device
07/19/1989EP0324667A1 Electron collector for an electron tube
07/04/1989US4845365 Process and apparatus for producing electrons using a field coupling and the photoelectric effect
06/1989
06/20/1989US4840595 Electron beam catcher for velocity modulated electron tubes
06/14/1989EP0320353A1 Motorised tuning arrangement for preadjusted frequencies of a klystron
06/13/1989CA1255793A1 Double staggered ladder circuit
06/07/1989EP0318695A2 Magnetron drive apparatus
06/06/1989US4837542 Hollow substantially hemispherical permanent magnet high-field flux source for producing a uniform high field
05/1989
05/31/1989EP0217868B1 Electrical interconnection assembly
05/30/1989US4835506 Hollow substantially hemispherical permanent magnet high-field flux source
05/30/1989US4835137 Periodic permanent magnet structures
05/23/1989US4833367 Magnetron with resonant choke structure for supressing unwanted harmonics
05/18/1989WO1989004233A1 Method and apparatus for manufacturing slow-wave structures for traveling-wave tubes
05/18/1989WO1989004217A1 Electron cyclotron resonance plasma source
05/18/1989DE3738105A1 Vacuum-tight radio-frequency coupling arrangement
05/17/1989EP0316092A1 Magnetron Anodes
05/16/1989US4831351 Periodic permanent magnet structures
05/16/1989US4831341 Magnetron with tuning member moveable by passing current through it
05/16/1989US4831335 High gain miniature crossed-field amplifier
05/09/1989US4829527 Wideband electronic frequency tuning for orotrons
05/09/1989US4829276 Optimal periodic permanent magnet structure for electron beam focusing tubes
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