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WO/2014/134596A2 |
A sulfur lamp having low microwave leakage comprising a structure made of a plurality of electrically conductive strips. The lamp cage is formed from respective halves removably joined together and configured to be resonant at the microw...
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WO/2014/094580A1 |
A magnetron and a magnetron sputtering device. The magnetron comprises an external magnetic pole (22) and an internal magnetic pole (21) which are opposite in polarities. On the radial section perpendicular to the magnetron, the internal...
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WO/2014/096728A1 |
The present invention relates to a device for generating microwaves with an oscillating virtual cathode, comprising a cathode (2), a thin anode (4) positioned at an inlet of a cylindrical waveguide (5), at least one first open reflector ...
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WO/2014/064227A1 |
The invention proposes a thermionic cathode (1 ) comprising: - a first emitting block (10) comprising at least one electron emission surface (12) configured to emit electrons in at least one predefined direction and at least one non-emis...
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WO/2014/010226A1 |
Provided is a plasma emission device for enhanced emission efficiency, and improved total luminous flux based thereon. The plasma emission device (1) has: an electromagnetic wave generator (2); a waveguide (4) for transmitting electromag...
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WO/2013/134700A1 |
A novel magnetron achieves increased power output at high frequencies by replacing a typical resonant cavity with a slow-wave waveguide structure. Waveguides built into the anode body sustain oscillations having phase change coefficients...
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WO/2013/104637A1 |
For a collector for a travelling wave tube and for a travelling wave tube having such a collector, a structure is provided in which at least one first collector stage (AS1) has a magnetic beam focusing and a smaller diameter and at least...
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WO/2013/090342A1 |
In a particular embodiment, a device is disclosed that includes means for providing a high-power continuous wave (CW) radio frequency (RF) source based on two injection-locked 2-stage CW magnetrons with outputs combined by a 3-dB hybrid ...
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WO/2013/061063A1 |
A filter (20) for reducing a ripple voltage component of a magnetron power supply comprises a first filter element comprising a first inductor (L1) in series with a power supply circuit for the magnetron (13) and a first capacitor (C1) i...
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WO/2013/045183A1 |
In order to reduce the secondary electron emission in a vacuum electron beam arrangement, in particular a travelling wave tube (TWT), a surface structure with an open-pore surface layer (OS) and a method for producing such a surface stru...
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WO/2013/029593A2 |
The invention relates to an apparatus for generating a thermodynamically cold plasma under standard atmospheric conditions by injecting microwave radiation at a frequency of > 3 GHz into a plasma chamber and subsequent superposition of a...
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WO/2012/119786A1 |
The present invention provides an electron gun (12) comprising a cathode (20), for generating electrons; an anode (22); an intermediate electrode (24), located between the cathode and the anode; and a controller (14). The controller appl...
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WO/2012/107763A1 |
An inductive filter 10 for a magnetron power supply lead 20 comprises an electrically insulating tube 105; a power lead 22, 23 located partially within the electrically insulating tube, and substantially coaxial therewith, for supplying ...
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WO/2012/098391A1 |
A magnetron has an anode body (1) and including a ceramic sleeve (7). In higher power generators, stray radiation is emitted from this sleeve in addition to the main power launched from the antenna into the waveguide (2), and RF absorbin...
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WO/2012/048473A1 |
A method and a system for temporal focusing and temporal alignment of an ultra-short electron bunch are provided. The method discloses how to realize the temporal compression and temporal alignment of an electron bunch in a cavity struct...
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WO/2012/013658A1 |
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/2011/144918A1 |
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/2011/120995A1 |
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/2011/117654A1 |
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/2011/058360A1 |
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/2011/058361A1 |
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/2011/050193A1 |
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/2011/044466A1 |
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/2011/037498A1 |
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/2011/037497A1 |
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/2011/033287A1 |
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/2011/022643A2 |
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/2011/006588A1 |
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/2010/151458A1 |
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/2010/103028A1 |
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/2010/085653A1 |
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/2010/044719A1 |
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/2010/031655A1 |
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/2009/149291A2 |
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/2009/136832A1 |
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/2009/123593A1 |
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/2009/115083A2 |
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/2009/089302A1 |
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/2009/083214A1 |
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/2009/083540A1 |
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/2009/083215A1 |
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/2008/147289A1 |
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/2008/135064A1 |
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/2008/130925A2 |
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/2008/131295A1 |
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/2008/127783A2 |
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/2008/109064A1 |
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/2008/076098A1 |
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/2008/033947A2 |
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/2008/022004A2 |
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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