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WO/2012/013658 |
The invention relates to a device (10, 40, 60, 150) for generating electromagnetic THz radiation with free electron beams (54, 56, 78, 190, 192), comprising a dynatron tube (22), where the dynatron tube (22) comprises an electron source ...
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WO/2011/144918 |
A high power electron tube, such as a magnetron, has the disadvantage that, to reduce the chances of the ceramic RF window failing in use, the manufacturing step entails a prolonged ageing period of powering the magnetron at low power on...
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WO/2011/120995 |
The thermal control device for radiative dissipation equipment comprises: first means, for capturing at least some of the radiation emitted by the dissipative equipment within at least one predetermined wavelength range of the infrared s...
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WO/2011/117654 |
A magnetron has an anode (1) and a cathode indicated generally by the reference numeral (2), in which the cathode includes two parts joined by sleeves (11, 12) of ferrous alloy spaced by a sleeve (13) of insulating material, the ferrous ...
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WO/2011/058360 |
An isolation transformer for a cathode heater supply for a microwave source has a first U- shaped secondary winding (421), comprising two parallel leg portions joined at one end thereof by a bridging portion. A primary winding (422) is l...
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WO/2011/058361 |
A high frequency cathode heater supply for a microwave source includes a SMPS inverter (13) and an isolation transformer (12) having a primary winding (122) arranged to be powered by the SMPS inverter, a monitor winding (123) passing thr...
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WO/2011/050193 |
A low-voltage, multi-beam, multi-MW RF source that operates at a voltage less than or equal to approximately 60 kV and generates at least one MW. The RF source includes a cathode configured to generate a plurality of beamlets. An input c...
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WO/2011/044466 |
A method of operating a motor is disclosed. The motor has a nameplate operating frequency and at least a first and second wiring configuration for operating at a first nameplate voltage and second, higher, nameplate voltage, respectively...
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WO/2011/037497 |
The invention relates to a device for generation of microwaves comprising a coaxial virtual cathode oscillator (1) with an outer cylindrical tube forming a cathode (2) and connected to a transmission line (8) for feeding the cathode (2) ...
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WO/2011/037498 |
The invention relates to a device for generation of microwaves comprising a virtual cathode oscillator (1) in a coaxial embodiment with an outer cylindrical tube forming a cathode (2) and connected to a transmission line (14) for feeding...
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WO/2011/033287 |
A method of retrieving a phase of a wavefield comprising the steps of: providing an estimate of the wavefield φ0 at an initial plane; and propagating the wavefield to and fro between an entrance plane being a plane having an area to whi...
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WO/2011/022643 |
A crossed field device (10, 110, 210, 310, 410), such as a magnetron or crossed field amplifier, that includes a cathode (12, 112, 212, 312, 412), an anode (14, 114, 214, 314, 414), one or more magnetic elements (16, 116, 316), and one o...
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WO/2011/022643 |
A crossed field device (10, 110, 210, 310, 410), such as a magnetron or crossed field amplifier, that includes a cathode (12, 112, 212, 312, 412), an anode (14, 114, 214, 314, 414), one or more magnetic elements (16, 116, 316), and one o...
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WO/2011/006588 |
The invention relates to a device for preventing parasitic oscillations in electron beam tubes, comprising a beam tunnel (2) having a static magnetic field present in an axial manner and ceramic and metal rings (12, 13) arranged in an al...
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WO/2010/151458 |
A system and method of magnetically insulating the cathode of a cold-cathode electron gun is achieved. A strong magnetic field is applied in the vicinity of the cold cathode to deflect and constrain the flow of electrons emitted from str...
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WO/2010/103028 |
The invention comprises an interaction tip for a power RF cavity comprising at least one opening (83) for the passage of an electron beam along an axis XX'. The interaction tip comprises a body (70) having two interlocked cylindrical ele...
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WO/2010/085653 |
A two-beam accelerator device including a drive beam source and an accelerated beam source for providing a drive beam and accelerated beam, a detuned resonant cavity disposed in the path of the drive beam and the accelerated beam, and a ...
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WO/2010/044719 |
The present invention relates to a coaxial vircator where the cathode is arranged relative the anode in such a way that it is allowed to rotate around its own and the anodes cylindrical axis. In further embodiments are only parts of the ...
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WO/2010/031655 |
The invention relates to an electronic tube that comprises: a microwave structure (10, 30) having a housing (12, 32) under vacuum and having two ends, the microwave structure being subjected to a reference potential (M); an electron cano...
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WO/2009/149291 |
Various embodiments of a coupled cavity traveling wave tube are disclosed herein. For example, some embodiments provide a coupled cavity traveling wave tube including a plurality of core segments arranged in spaced-apart fashion to form ...
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WO/2009/149291 |
Various embodiments of a coupled cavity traveling wave tube are disclosed herein. For example, some embodiments provide a coupled cavity traveling wave tube including a plurality of core segments arranged in spaced-apart fashion to form ...
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WO/2009/136832 |
The invention relates to a device for the generation of microwaves, comprising a virtual cathode oscillator (1) in coaxial construction having an outer substantially cylindrical tube constituting a cathode (2) and connected to a transmis...
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WO/2009/123593 |
A klystron has a hollow beam electron gun that has a circular planar electron emitting surface. A hollow electron beam is directed from the electron gun through a plurality of drift tubes, resonant chambers and magnetic fields to a colle...
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WO/2009/115083 |
The invention relates to a RF component having a reduced multipactor effect, and to a method for reducing the multipactor effect in RF components.
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WO/2009/115083 |
The invention relates to a RF component having a reduced multipactor effect, and to a method for reducing the multipactor effect in RF components.
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WO/2009/089302 |
A grid component (20) for use with a vacuum electron device (VED), such as an inductive output tube (IOT), includes a skirt (2S) that adds structural support and aids in alignment. The grid component has a dome (22) in which a grid patte...
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WO/2009/083215 |
The invention relates to the cooling of an electronic tube such as an IOT for amplifying a high frequency signal. The electronic tube includes an electron gun, a resonance cavity and a collector, the electron gun generating an electron b...
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WO/2009/083214 |
The invention relates to an electronic tube with a resonance cavity for amplifying a high-frequency signal, e.g. higher than 1 GHz, for scientific applications. The tube includes an electron gun, a resonance cavity (7) and a collector (1...
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WO/2009/083540 |
The invention relates to an electron tube, for example one having a resonant cavity, intended to amplify a high-frequency signal used for example for television or radio. The tube comprises an electron gun (1), an anode (5), a resonant c...
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WO/2008/147289 |
The present invention relates to a vircator that provides for a electromagnetic field coupling between the two resonance areas in the vircator. This is achieved by designing the anode of the vircator in such a way that electromagnetic ra...
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WO/2008/135064 |
A collector sweeping method for controlling an electron beam (1) in a beam collector (230) , in particular of a magnetic gyrotron device, comprises the steps of subjecting the electron beam (1) to a transversal sweeping field having a fi...
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WO/2008/131295 |
An output circuit for a microwave tube is provided that has generally high interaction impedance for good efficiency, has high average power capability, and is physically large for a given operating frequency. The output circuit is desig...
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WO/2008/130925 |
A resonant cavity with a bowtie shape supports an electromagnetic field used to deflect the trajectory of an electron beam passing through the cavity. The short transit time of the beam across the gap maintains the cavity fields at near-...
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WO/2008/127783 |
Disclosed herein is a class of mm and sub mm wavelength amplifiers and oscillators operating with miniature helical slow wave circuits manufactured using micro fabrication technology. The helices are supported by diamond dielectric suppo...
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WO/2008/127783 |
Disclosed herein is a class of mm and sub mm wavelength amplifiers and oscillators operating with miniature helical slow wave circuits manufactured using micro fabrication technology. The helices are supported by diamond dielectric suppo...
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WO/2008/109064 |
A terahertz sheet beam klystron (TSBK) includes an electron gun configured to generate a sheet electron beam and a drift tube through which the sheet beam is propagated. The drift tube is provided with multiple resonant cavities and incl...
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WO/2008/076098 |
A coaxial cavity gyrotron with two electron beams includes an electron gun (magnetron injection gun, "MIG," with two beams), a coaxial cavity and a magnetic field tube. The coaxial cavity consists of two parts: an outer conductor 1 and a...
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WO/2008/070503 |
An input circuit of a microwave amplification tube achieves improved instantaneous bandwidth. By directly coupling the transmission line carrying a modulating radio frequency signal to a control grid, a low-Q input circuit is created tha...
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WO/2008/033947 |
A microscale vacuum electronic device (10) provides for a mechanical modulation of cathode (12) position allowing improved high-frequency modulation of an electron beam (24) useful for vacuum electronic devices such as klystrons, klystro...
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WO/2008/033947 |
A microscale vacuum electronic device (10) provides for a mechanical modulation of cathode (12) position allowing improved high-frequency modulation of an electron beam (24) useful for vacuum electronic devices such as klystrons, klystro...
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WO/2008/022004 |
An electron beam amplification device provides trajectory modulation of an electron beam, and includes an electron gun, a modulator, an interceptor, an output circuit, and a collector. The electron gun produces an electron beam. The modu...
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WO/2008/022004 |
An electron beam amplification device provides trajectory modulation of an electron beam, and includes an electron gun, a modulator, an interceptor, an output circuit, and a collector. The electron gun produces an electron beam. The modu...
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WO/2008/010858 |
A waveguide conduit is constructed and adapted to.capture the light emitted by the at least one nanb-resonant structure. The nano-resonant structure emits light in response to excitation by a beam of charged particles, The source of char...
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WO/2008/008504 |
A device for providing electromagnetic oscillations in the sub-millimeter range comprising one or more electron beam generators for providing a first and a second electron beam and one or more magnetic field generators for focusing the f...
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WO/2007/142419 |
Disclosed is a cold cathode klystron oscillator and the oscillation method thereof. The cold cathode klystron oscillator according to the present invention comprises an electron source by a cold cathode that emits a primary electron; a f...
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WO/2007/130095 |
An array of ultra-small structures of between ones of nanometers to hundreds of micrometers in size that can be energized to produce at least two different frequencies of out put energy or data, with the ultra small structures being form...
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WO/2007/130082 |
A nano-resonating structure constructed and adapted to include additional ultra-small structures (314) that can be formed with reflective surfaces. By positioning such ultra-small structures (314) adjacent ultra-small resonant structures...
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WO/2007/114522 |
A wireless communication device having extremely simple constitution is used, and a low-cost and low power consumption wireless network system with high-quality signals is provided. The wireless network system is provided with a pluralit...
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WO/2007/106114 |
A device for coupling output from a resonant structure to a plasmon transmission line includes a transmission line formed adjacent at least one element of the light-emitting resonant structure; a detector microcircuit disposed adjacent t...
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WO/2007/081389 |
When using micro-resonant structures, a resonant structure may be turned on or off (e.g., when a display element is turned on or off in response to a changing image or when a , communications switch is turned on or off to send data diffe...
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