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| Number | Title | Issue Date |
| 7403076 | High frequency quasi optical power source capable of solid state implementation In one embodiment, a high frequency quasi optical oscillator power source is provided which includes an array of amplifier devices each having an input antenna tuned for a fundamental frequency. A amplifier coupled to the input antenna amplifies fundamental frequenc... | 07/22/2008 |
| 7378914 | Solid-state high-power oscillators Embodiments of High-Power Millimeter-Wave Oscillators are generally described herein. Other embodiments may be described and claimed. In some embodiments, the oscillator includes a polarized partial reflector to at least partially reflect back signals to a reflectio... | 05/27/2008 |
| 6909104 | Miniaturized terahertz radiation source A miniaturized terahertz radiation source based on the Smith-Purcell effect is provided, in which, from a focused electron source, a high-energy bundle of electrons is transmitted at a defined distance over a reflection diffraction grating composed of transversely d... | 06/21/2005 |
| 6448850 | Electromagnetic wave amplifier and electromagnetic wave generator An electromagnetic wave amplifier and an electromagnetic wave generator operate using electron beams in a vacuum environment. The amplifier, arranged in a vacuum environment, comprises an electron emitting section for emitting electron beams and an amplif... | 09/10/2002 |
| 6300715 | Very high power radiofrequency generator The disclosure relates to a radiofrequency generator including an Inductive Output Tube with an electron gun followed by an anode, the gun being raised to a high voltage in use, means producing an input radiofrequency signal and means of transmitting it t... | 10/09/2001 |
| 5805025 | Radial electron-beam-breakup transit-time oscillator A radial electron-beam-breakup transit-time oscillator (RBTO) provides a compact high power microwave generator. The RBTO includes a coaxial vacuum transmission line having an outer conductor and an inner conductor. The inner conductor defines an annular ... | 09/08/1998 |
| 5777572 | Device for damaging electronic equipment using unfocussed high power millimeter wave beams A device for damaging electronic equipment has a millimeter wave generator, such as a gyrotron oscillator, for producing very high power millimeter waves. A beam former antenna forms the millimeter waves into narrow beams for distance transmission. An ant... | 07/07/1998 |
| 5719470 | Gyrotron capable of outputting a plurality of wave beams of electromagnetic waves An electron beam generated by an electron gun is oscillated in a cavity resonator and output as a millimeter electromagnetic wave. The output electromagnetic wave is transmitted to a cylindrical mode converter. The inner wall surface of this mode converte... | 02/17/1998 |
| 5550432 | Smart adaptive vacuum electronics A system which integrates "intelligent" electronic feedback into the structure of vacuum electronic devices whose subcomponents are electronically and/or electro-mechanically adaptive. By "vacuum electronic device," is meant any source of microwave (or mi... | 08/27/1996 |
| 5374873 | Gyrotron apparatus having vibration absorbing means In a gyrotron apparatus, an oscillator tube unit and a collector are coupled by a bellows. The collector is received in an evaporation boiler jacket. The oscillator tube is supported on a stand and the collector and the boiler jacket is supported on the o... | 12/20/1994 |
| 5373263 | Transverse mode electron beam microwave generator An electron beam microwave device having an evacuated interaction chamber to which are coupled a resonant cavity which has an opening between the resonant cavity and the evacuated interaction chamber and an electron gun which causes a narrow beam of elect... | 12/13/1994 |
| 5281894 | Dual cavity for a dual frequency gyrotron A gyrotron providing first and second microwave frequencies comprises a dual frequency cavity coupled between an electron gun and a waveguide. The electron gun, the dual frequency cavity and a segment of the waveguide are surrounded by a variable magnetic... | 01/25/1994 |
| 5266868 | Gyrotron including quasi-optical mode converter There is provided a gyrotron including a quasi-optical mode converter wherein a solid dielectric layer such as silicon carbide for absorbing unnecessary millimeter waves generated by diffraction of the quasi-optical mode converter is arranged in annular s... | 11/30/1993 |
| 5235248 | Method and split cavity oscillator/modulator to generate pulsed particle beams and electromagnetic fields A compact device called the split cavity modulator whose self-generated oscillating electromagnetic field converts a steady particle beam into a modulated particle beam. The particle beam experiences both signs of the oscillating electric field during the... | 08/10/1993 |
| 5232902 | Method and apparatus for modulating relativistic electron beams to produce microwaves using a superconducting passage A method and an apparatus for enhancing modulation of a relativistic electron beam are described. A relativistic electron beam having been modulated is produced and passed through a superconducting passage having a periodicity in the passing direction of ... | 08/03/1993 |
| 5187409 | Gyrotron having a quasi-optical mode converter A gyrotron having a mode converter located in the path of a wave passing passage, the mode converter comprising a means for mode-converting electromagnetic wave into a radiating electromagnetic wave having an annular-shaped power distribution in a plane p... | 02/16/1993 |
| 5187408 | Quasi-optical component and gyrotron having undesired microwave radiation absorbing means A quasi-optical component for microwave radiation comprises a quasi-optical element (16a) which radiates incident microwave radiation along a major axis (19) and which has a characteristic transverse dimension (D) which is smaller than 50-times one wavele... | 02/16/1993 |
| 5180944 | Gyrotron with a mode convertor which reduces EM wave leakage In a gyrotron having an annular collector for an expanded e-beam and a gyrotron output waveguide with an annular gap for passing the expanded e-beam is provided with a mode converter between the resonator and the gap to shift more energy to the waveguide ... | 01/19/1993 |
| 5164634 | Electron beam device generating microwave energy via a modulated virtual cathode The invention relates to a device for producing microwave energy from an electron beam. The device includes: an electron gun (1), allowing the production of an electron beam (8) in a so-called injection zone (3); a microwave modulation circuit (7), allowing th... | 11/17/1992 |
| 5146184 | Atomic clock system with improved servo system An improved atomic beam clock apparatus and method are disclosed. The invention substantially reduces errors arising from Rabi pulling and variations in the frequency standard resulting from variations in the amplitude of the microwave signal used to exci... | 09/08/1992 |
| 5144194 | Quasi-optical gyrotron having angularly spaced quasi-optical resonators lying in a common plane A quasi-optical gyrotron for the production of electromagnetic radiation in the form of mm waves has several high-power resonators. Resonators have two mirrors each lying on a resonator longitudinal axis aligned perpendicular to an electron beam axis. The... | 09/01/1992 |
| 5138230 | Quasi-optical gyrotron having a rotatable mount for providing resonator mirrors of a selected frequency In a quasi-optical gyrotron an electron beam (1) passes along an electron beam axis (2) and in so doing is compressed by a static magnetic field and forced into gyration, so that it excites in a quasi-optical resonator a standing alternating electro-magne... | 08/11/1992 |
| 5134342 | Quasi-optical gyrotron having a hologram output coupling In a quasi-optical gyrotron which exhibits a quasi-optical resonator having two mirrors (4a, 4b) which opposite one another on a resonator axis (5), the required electromagnetic radiation is coupled out by means of a hologram. In this arrangement, at leas... | 07/28/1992 |
| 5134341 | Quasi-optical gyrotron having a yoke structure shielding the superconductive resonator from unwanted magnetic fields In a quasi-optical gyrotron, two coils (3a, 3b) in a Helmholtz arrangement generate a static magnetic field which is axially symmetrical with respect to an electron beam axis (2). As a result, the electrons passing along the electron beam axis (2) paralle... | 07/28/1992 |
| 5113154 | Microwave generator device with virtual cathode A microwave generator that uses an electron beam and the phenomenon of the oscillating virtual cathode, but makes it possible to obtain energy with improved spectral quality and conversion efficiency as compared with standard vircator generators. This is ... | 05/12/1992 |
| 4745336 | Microwave generation by virtual cathode with phase velocity matching The present invention provides a vircator with improved efficiency. An elongated anode is aligned with an elongated cathode so as to produce an elongated virtual cathode when a direct current voltage source is electrically connected to the elongated catho... | 05/17/1988 |
| 4730170 | Virtual cathode microwave generator having annular anode slit A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit therethrough... | 03/08/1988 |
| 4661744 | Electromagnetic energy generators having resonating cavity with reflecting zones A generator of short electromagnetic waves is provided with a novel form of resonant cavity having improved mode selectivity. The reflecting walls of the cavity correspond to a surface of revolution and the meridian planes include four discrete mirror zon... | 04/28/1987 |
| 4596967 | High power microwave generator A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high ... | 06/24/1986 |
| 4583025 | Autogenerator of beams of charged particles An autogenerating apparatus provides secondary intense relativistic current beam pulses in response to an injected beam pulse. One or more electromagnetic energy storage devices are provided in conjunction with gaps along a beam propagation path for the i... | 04/15/1986 |
| 4553068 | High power millimeter-wave source A simple method and apparatus are disclosed for producing high power gigat level millimeter radiation from an intensely oscillating relativistic turbulent electron plasma created in and beyond the gap of a high voltage diode configuration. The diode is c... | 11/12/1985 |
| 4395655 | High power gyrotron (OSC) or gyrotron type amplifier using light weight focusing for millimeter wave tubes An improved gyrotron oscillator or gyrotron amplifier having a plurality of trong-field magnetic arrays disposed along the length of the device. Each magnetic array comprises n electromagnets, the windings of which are arranged so that the polarity of the ... | 07/26/1983 |
| 4345220 | High power microwave generator using relativistic electron beam in waveguide drift tube Coherent microwave radiation is generated in and transmitted through a waveguide/drift tube by means of an injected relativistic electron beam the parameters of which, in combination with the waveguide/drift tube geometry and dimensions effect a virtual c... | 08/17/1982 |
| 4331934 | Cerenkov submillimeter electromagnetic wave oscillator The device of the invention comprises a body of dielectric material having a metallic surface on one portion thereof. An electron beam is passed adjacent a second portion of the dielectric body in order to generate electromagnetic radiation in the dielect... | 05/25/1982 |
| 4286230 | Near millimeter wave generator with dielectric cavity A high frequency electromagnetic wave generator is disclosed which comprises an electron gun which directs an electron beam through a region generally adjacent a diffraction grating. The grating cooperates with an opposed reflecting surface to produce a s... | 08/25/1981 |
| 4122372 | Dielectrically loaded waveguide for producing high power coherent microwave radiation A method and apparatus for producing high power, coherent microwave radiaton in which a beam of high speed (above 0.5 light speed) electrons are propagated through a linear path in a waveguide tube including low dielectric constant material adjacent the p... | 10/24/1978 |
