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WO/2008/010858A2 |
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/2007/142419A1 |
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/2007/130082A2 |
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/2007/114522A1 |
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/2007/020921A1 |
A linear electron beam (1) generated from an electron source is emitted in vacuum to intersect an electromagnetic beam (4) focused to a magnitude of approximately a wavelength, and the speed of the electron beam is modulated at a frequen...
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WO/2007/019150A2 |
Particles are sorted for emitting coherent radiation, specifically high-energy particles (111) capable of coherent emission. Particles move toward a coherent emission chamber using molecular flow, so coherently emitting particles are col...
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WO/2007/019149A2 |
An enhanced heteroscopic turbine including a macroscopic rotor (10) and an interaction, sorting, or interaction and sorting element (14) incorporated into the rotor that operates on individual particles (3) in a fluid (2). The heteroscop...
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WO/2006/075195A1 |
The subject of this invention is a method and apparatus of transforming consequent wave or field alternations into repetitive unidirectional thrusts in a synchronized manner. In the general classical version of the principle, the magneti...
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WO/2006/052811A2 |
An inductive output tube (IOT) operates in a frequency range above 1000 MHz. An output window may be provided to separate a vacuum, portion of the IOT from an atmospheric pressure portion of the IOT, the output window being surrounded by...
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WO/2006/045766A1 |
The invention relates to a microwave tube consisting of an electron gun comprising a cathode that generates an electron beam (56) in a microwave structure of the tube, and a collector (50) for collecting electrons from the beam. In addit...
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WO/2006/037918A2 |
The invention concerns a microwave generating device comprising a diode (4, 2) consisting of an anode (4) and a cathode (2) and adapted to create a virtual cathode (6) by accumulation of electrons in a circular waveguide (5) capable of p...
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WO/2006/036268A2 |
A clock including: a portable, at least partially evacuated housing; a cell being positioned within the housing and including an internal cavity having interior dimensions each less than about 1 millimeter, an intra-cavity pressure of at...
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WO/2006/000296A1 |
The invention relates to a microwave generator which comprises a housing having two opposite electrodes, separated by an electrode gap filled with a dielectric, and a spark gap in between the two electrodes which sparks, thereby emitting...
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WO2005017938B1 |
The disclosure relates to a sub-millimeter backward wave oscillator (100). More specially, the disclosure relates to a miniature backward wave oscillator (100) having a biplanar interdigital circuit (115, 125). In one embodiment the inte...
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WO/2005/059946A1 |
A klystron has a plurality of electron beam paths and plural damped disc-shaped cavities. The plurality of electron beam paths cut the cavities and the Klystron amplifier further comprises an annular input cavity and an annular output ca...
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WO/2005/036730A1 |
A microwave generator comprises a magnetron having an anode and a cathode, oscillating by the current supplied to the anode, and generating a microwave, electric-field controlling means for controlling one of the frequency/phase and the ...
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WO/2005/020272A2 |
A phase locked magnetron comprises a cathode (2) and anode (6) and an interaction space in between. The cathode is coupled to an injected locking signal, which prompts the operation of the magnetron to be in phase with the phase of the l...
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WO/2005/017939A2 |
A RF amplifier (2) includes a RF input section (4) for receiving a RF input signal (16). At least one single-sided slow-wave structure (12) is associated with the RF interaction section. An electron ribbon beam (10) that interacts with t...
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WO/2004/107382A1 |
A millimeter-wave backward wave oscillator using a high order space harmonic operation of a folded waveguide and a low-voltage linear electron beam is disclosed. The oscillator has an electron beam generator generating a linear electron ...
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WO/2004/100353A2 |
Low-noise, crossed-field devices such as a microwave magnetron, a microwave oven utilizing same, crossed-field amplifier and a method of converting a noisy magnetron to a low-noise magnetron utilize an azimuthally varying, axial magnetic...
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WO/2004/090929A1 |
The present invention relates to the anode of a magnetron for microwave ovens, and manufacturing method and forming apparatus therefore. In particular, the present invention relates to the anode of a magnetron for microwave ovens, and ma...
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WO/2004/049378A2 |
An electrode structure for a vacuum tube is formed by having a ceramic insulating body act as the tube wall. Electrode areas are formed on the inside of the tube by coating the inside of the tube wall with a conductor. These electrode ar...
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WO/2004/044943A2 |
A multiple electron beam pattern generator (100) includes a multiple electron beam source (235) to generate a plurality of electron beams (110) that are modulated according to a pattern. An anode (240) accelerates the electron beams (110...
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WO/2004/021611A2 |
An optical communication system is provided which includes an optical signal tranmitter which communicates high bandwidth, high power frequencies. The optical signal transmitter includes a high efficiency/high power optical source such a...
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WO/2004/006281A2 |
Axially symmetric magnetic fields are provided about the longitudinal axis of each beam of a multi-beam electron beam device (MBEBD). A flux equalizer assembly is disposed between the cathodes and the anodes and near the cathodes of a (M...
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WO/2003/106264A1 |
The invention concerns a device for cooling travelling-wave tubes (26) having a collector (28) preferably operating at high temperature and thermally insulated from the rest of the tube, the device comprising a radiator (15) thermally un...
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WO/2003/105179A1 |
An inductive output tube (IOT) amplifier system for receiving an RF input signal and providing therefrom an amplified RF output signal. The system includes a high tension DC voltage supply and an IOT tube. The IOT tube includes a cathode...
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WO/2003/081628A1 |
An unsymmetrical-dielectric loaded helical structure with negative dispersion characteristics and a wideband TWT using the same is disclosed. The helical structure has a helix disposed between the electron-beam-generating apparatus and t...
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WO/2003/079393A1 |
A magnetron arrangement has a coaxial output (13) including a central conductor (14). The output further comprises a plate (19) located in a predetermined position with respect to the central conductor. The plate optimises the coupling o...
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WO/2003/079394A1 |
A magnetron comprises an anode (2) having at least one vane (3), which defines a plurality of cavities. A dielectric resonator (7) is located such that it is in communication with the vane(s). The dielectric resonator includes a lossy po...
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WO/2003/077273A2 |
A collector structure for a linear beam device is disclosed having a segmented ceramic collector core that permits sustained operation at high temperatures and high power densities, such as encountered in miniature traveling wave tubes. ...
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WO/2003/054904A1 |
A method and apparatus to individually detect the cathode to helix current of multiple TWTs sharing a common cathode to helix voltage supplied by a single HV EPC, which provides the capability to determine which tube has exceeded the lim...
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WO/2003/046941A1 |
An electromagnetic radiation source (22) is provided which includes an anode (42) and a cathode (40) separated by an anode-cathode space (44). The source (22) further includes electrical contacts (54, 56) for applying a dc voltage betwee...
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WO/2003/038854A1 |
An electron beam tube apparatus comprises a plurality of electron beam tubes (21, 22) having a common output cavity (25). Power is coupled to the common cavity from the resonant cavities (23, 24) of the beam tubes, and is then fed to an ...
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WO/2003/030204A2 |
The invention relates to a very high power microwave generator that employs the virtual cathode phenomenon. The inventive microwave generator (60) comprises an emission device (62) that can produce electrons in an output microwave circui...
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WO/2003/015264A1 |
The invention concerns a device for amplifying a high frequency signal. The invention is particularly adapted to transmit radiofrequency signals used for television or radio in frequency modulation. The high frequency signal amplifying d...
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WO/2002/071435A1 |
The invention relates to a device (1) for producing high frequency microwaves comprising a cathode arrangement with heatable cathodes (15) for emitting electrons, two grid arrangements for controlling and focusing fluxes of electrons and...
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WO2000054305A9 |
An optoelectronic device (10) includes an evacuated chamber (12), a negatively-biased source electrode (20) disposed within the evacuated chamber and having a source lead (24) and a collector electrode (22) disposed within the evacuated ...
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WO/2002/065504A1 |
A magnetron comprises an anode (2) having vaner (3a, 3b) which define a plurality of cavities. A dielectric resonator (7) is located such that it is in communication with at least one of the vanes (3a, 3b). In use, the dielectric resonat...
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WO/2002/063652A1 |
The collector of a gyrotron is provided with a hollow cylindrical recess, running coaxial with the axis, in which the collector coil group, for directing the hollow electron beam from the resonator onto the collector wall, is coaxially e...
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WO/2002/029843A1 |
An electron field emission device is provided by placing a substrate in a reactor, heating the substrate and supplying a mixture of hydrogen and a carbon-containing gas to the reactor while supplying energy to the mixture of gases near t...
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WO/2002/025684A1 |
A vacuum electron device (50) for generating signals at microwave radio frequencies utilizes an electron source for emitting electrons through a field produced by a magnet in the RF section of a tube. After the electrons have passed thro...
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WO/2002/015217A1 |
A coaxial gyrotron has a central conductor which is placed on the cathode and consists of monotonically decreasing corrugations in a central, cylindrical area in an axial direction to the collector. The corrugations are evenly distribute...
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WO/2002/001593A1 |
The invention concerns a micro-wave tube comprising at least an electron gun (10) for transmitting electrons to an input waveguide (11) through which they pass transversely and wherein an input signal (Pe) to be amplified is to be propag...
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WO/2001/097250A2 |
In a aspect of the disclosure an optical magnetron (22) is provided which includes a cylindrical cathode (40) having a radius rc, and an annular-shaped anode (42) having a radius ra and coaxially aligned with the cathode (40) to define a...
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WO/2001/088945A1 |
A coupled cavity circuit for a microwave electron tube comprises at least two resonant cavities adjacent to each other. An electron beam tunnel passes through the coupled cavity circuit to allow a beam of electrons to pass through and in...
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WO/2001/075928A1 |
A magnetron includes a decoupling plate (16) located between the end hat (15) of the magnetron cathode (21) and an output coupling member (11). The use of the decoupling plate (16) presents a high impedance and gives a resonant circuit w...
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WO/2001/059802A1 |
A transducer suitable for generating signals in the terahertz region has a resonant cavity (4) with apertures (6) aligned with a cold cathode source (2) being a field emitter array. The resonant cavity (4) consists of an inner cylindrica...
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WO/2001/046985A2 |
A magnetron arrangment has a coaxial output (13) terminating in a probe (14) which launches energy from the magnetron along a rectangular waveguide (17). The coaxial output (13) is arranged in an endfire configuration with respect to the...
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WO/2001/046981A2 |
In a magnetron anode, an anode (6) surrounds a central cathode (1). The anode (6) is of a segmented structure having a plurality of annular segments (9) stacked together along its length. Each annular segment (9) includes a strap (10), t...
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