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| Number | Title | Issue Date |
| 7417376 | Linear electron beam tube having a dome shape RF window An electron beam tube device such as an inductive output tube of the integral cavity type has a RF window which re-enters the interaction space within the cavity thereby defining a space that is within the interaction cavity but is outside the vacuum. An output coup... | 08/26/2008 |
| 7365493 | Device for producing high frequency microwaves A device is proposed for producing high-frequency microwaves, having a cathode arrangement with heatable cathodes for emitting electrons, two grating arrangements for controlling and focusing the electrons flow and an anode for recaiving the electrons passing throug... | 04/29/2008 |
| 7359206 | Radio frequency isolation system and cover assembly for vacuum electron device A self-guiding cover assembly for a vacuum electron device (VED) enclosure (704, 1316) has a cover (1002, 1302), a pair of guide plates, and a pair of guide elements (1304, 1306). The cover has at least one electrical connector (1314) dis... | 04/15/2008 |
| 7358803 | Broadband high efficiency traveling wave tube amplifier system A power control system for a satellite receiving radio-frequency signals includes a traveling wave tube amplifier system and corresponding traveling wave tube. An anode voltage of the traveling wave tube amplifier system is used to modulate or saturate the current o... | 04/15/2008 |
| 7242135 | High voltage connection for vacuum electron device A high voltage direct current contact for a vacuum electron device (VED), including (a) an outer cathode line having a first hollow cylinder having a first VED connection end, (b) a contact block removably positioned within the outer cathode line, having a heater co... | 07/10/2007 |
| 7230385 | Collector arrangement A collector for an electron beam tube comprises a plurality of electrode stages. The electrode stages are spaced from one another by a non-conductive spacer. The non-conductive spacer is located between portions of electrodes and extends into the collector on a firs... | 06/12/2007 |
| 7218053 | Electron beam tube output arrangement An electron beam tube of the type for amplification of RF signals comprising an electron gun, an interaction region within a vacuum, an RF input and an RF output arrangement, the RF output arrangement comprising an output coaxial line and a coaxial divider, wherein ... | 05/15/2007 |
| 7202605 | Electron beam tube apparatus having a common output combining cavity An electron beam tube apparatus comprises a plurality of electron beam tubes having a common output cavity. Power is coupled to the common cavity from the resonant cavities of the beam tubes, and is then fed to an output line. This arrangement permits the outputs of... | 04/10/2007 |
| 7145297 | L-band inductive output tube 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 a cooling air manifold, the m... | 12/05/2006 |
| 7029296 | Cover assembly for vacuum electron device A self guiding cover assembly for a vacuum electron device (VED) enclosure has a cover, a pair of guide plates, and a pair of guide elements. The cover has a top, a sidewall, an inside and an outside, and at least one electrical connector disposed on the inside of t... | 04/18/2006 |
| 7005801 | Projection type cathode ray tube having improved focus characteristics A projection type cathode ray tube includes a phosphor screen, a cathode, G1, G2 and a main lens composed of first, second and third electrodes. The first and third electrodes are supplied with an anode voltage of the phosphor screen, and the second electrode is sup... | 02/28/2006 |
| 6998783 | Inductive output tube having a broadband impedance circuit An inductive output tube (IOT) provides improved efficiency and larger bandwidth. In one embodiment, an IOT is provided with an electron gun that generates an electron beam, a tube body, a collector for collecting the electron beam, and an extended-interaction outpu... | 02/14/2006 |
| 6879208 | Multi-stage collector having electrode stages isolated by a distributed bypass capacitor In a multistage collector used in a linear beam tube such as an IOT or klystron, electrode stages are separated by ceramic rings having metallised surfaces to provide distributed bypass capacitors. This eliminates or reduces leakage or any radio frequency energy fro... | 04/12/2005 |
| 6781313 | Tubular capacitor for use in an electron beam tube A capacitor includes a conductive tube, covered by insulating material and a layer of conductive material located at the central part of the tube. The geometry presents a low inherent inductance and a continuous, distributed conductance. The capacitor may be used as... | 08/24/2004 |
| 6768266 | Microwave pulse generator incorporating a pulse compressor A pulse generator includes a microwave source that delivers a pulsed signal into a resonant compression cavity equipped with a switching device for opening or closing the resonant compression cavity. The pulsed signal is stored in the resonant compression cavity whe... | 07/27/2004 |
| 6756734 | Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device Expressing a perveance of an electron gun to be determined by a form of the electron gun as Pμ, a voltage to be impressed on an accelerating electrode Va and a beam current Ib, voltage Va which satisfies the following expression, Ib | 06/29/2004 |
| 6633129 | Electron gun having multiple transmitting and emitting sections An electron gun that generates multiple electron bunches and the application of this gun to produce rf energy. The electron gun includes an rf input cavity having a first side with multiple emitting surfaces and a second side with multiple transmitting an... | 10/14/2003 |
| 6583567 | Electron tube device mounted with a cold cathode and a method of impressing voltages on electrodes of the electron tube device A method and device are provided for preventing deterioration of a cold cathode in an electron tube device that utilizes the cold cathode as an electron source. In accordance with the expression defining the beam current of the electron tube device, Ib | 06/24/2003 |
| 6429589 | Oil-cooled multi-staged depressed collector having channels and dual sleeves An oil-cooling system is provided for a multi-staged depressed collector of a linear beam device, such as an inductive output tube or klystron. The multi-staged depressed collector comprises a plurality of electrode stages adapted to have respective elect... | 08/06/2002 |
| 6407495 | Electron beam tube having particular structure of the vacuum envelope containing electron gun An electron beam tube includes an electron gun included within a vacuum envelope defined partly by a ceramic cylinder. The ceramic cylinder includes straight sided portions and with an intervening conical section between them. The straight sided portions ... | 06/18/2002 |
| 6380803 | Linear amplifier having discrete resonant circuit elements and providing near-constant efficiency across a wide range of output power A linear amplifier comprises an electron gun assembly having a cathode, and an anode spaced from the cathode. A relatively high voltage potential is applied between the anode and the cathode, and the cathode provides an electron beam in response to the re... | 04/30/2002 |
| 6356021 | Built-in resistor for cathode-ray tube A built-in resistor for cathode-ray tube which comprises an insulating substrate, a resistance layer formed on one main surface of the insulating substrate, a plurality of terminal electrodes mounted on the resistance layer, and a plurality of terminals c... | 03/12/2002 |
| 6304033 | Electron beam tube having a DC power lead with a damping structure An electron beam tube (1) having an input resonator cavity (2) through which a high-frequency control voltage is applied between cathode (15) and grid (17) of the tube (1), while an annular electrode (8) connected in an electrically conducting manner to t... | 10/16/2001 |
| 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 |
| 6232721 | Inductive output tube (IOT) amplifier system An inductive output tube (IOT) amplifier system is presented 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 coup... | 05/15/2001 |
| 6191651 | Inductive output amplifier output cavity structure A signal output assembly for an inductive output amplifier comprises a primary output cavity including a drift tube enclosing a modulated electron beam. The density modulated beam passes across a gap separating portions of the drift tube and induces an am... | 02/20/2001 |
| 6133786 | Low impedance grid-anode interaction region for an inductive output amplifier A linear beam amplification device includes an axially centered electron emitting cathode and an anode spaced therefrom. The cathode provides an electron beam in response to a relatively high voltage potential defined between the cathode and the anode. A ... | 10/17/2000 |
| 6084353 | Coaxial inductive output tube having an annular output cavity An Inductive Output Tube where, in order to permit the use of coaxial output cavities, the electron beam propagates in first approximation in a radial direction from the cathode. The electron beam is generated by an in first approximation cylindrical cath... | 07/04/2000 |
| 5990622 | Grid support structure for an electron beam device A grid support structure is provided for a linear beam device having an axially centered cathode, an anode spaced therefrom and a grid disposed between the cathode and anode. The grid support structure maintains a proper grid-to-cathode spacing across an ... | 11/23/1999 |
| 5990621 | Electron beam tubes including ceramic material for realizing rf chokes A linear electron beam tube such as an IOT includes an input cavity formed from an inner body portion and an outer body portion which are joined together by a ceramic cylinder. The input cavity surrounds an electron gun and permits electrical connection t... | 11/23/1999 |
| 5932972 | Electron gun for a multiple beam klystron An electron gun provides multiple convergent beamlets in a rectilinear flow for use in multiple drift tubes of a multiple beam klystron. The electron gun comprises a cathode having a concave emitting surface and an anode having a concave surface defined b... | 08/03/1999 |
| 5914067 | Microwave oven equipped with a structurally simple microwave generating apparatus A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode, the first grid having holes for converting electrons from the cathode to the electron beams, a choke structur... | 06/22/1999 |
| 5894197 | Device for attenuating unwanted waves in an electron tube The present invention relates to a device for attenuating unwanted waves appearing in an electron tube which includes at least two coaxial cylindrical electrodes (2, 3). The electrodes (2, 3) contribute to forming the walls of a coaxial resonator. The unw... | 04/13/1999 |
| 5883369 | Structurally simple apparatus for generating a microwave frequency energy An apparatus for generating a microwave frequency energy includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the cathode, a choke structure for serving as a capacitor, wherein the cathode, the fi... | 03/16/1999 |
| 5883367 | Microwave oven equipped with a structurally simple apparatus for generating a microwave frequency energy A microwave oven includes a cooking chamber, a waveguide, and an apparatus for generating a microwave frequency energy. The apparatus includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the catho... | 03/16/1999 |
| 5883368 | Microwave frequency energy generating apparatus provided with a voltage converting means An apparatus for generating a microwave frequency energy includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the cathode, a choke structure for serving as a capacitor, wherein the cathode, the fi... | 03/16/1999 |
| 5850074 | Microwave oven equipped with a microwave generating apparatus designed to reduce secondary electron emission A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode. The first grid has holes for converting electrons from the cathode to the electron beams and a metal film for... | 12/15/1998 |
| 5841114 | Microwave oven equipped with a microwave output controlling apparatus A microwave oven includes a microwave generating apparatus having a cathode, a first grid for controlling the flow of electrons from the cathode, the first grid having holes for converting electrons from the cathode to the electron beams, a choke structur... | 11/24/1998 |
| 5773933 | Broadband traveling wave amplifier with an input stripline cathode and an output stripline anode A broadband, traveling wave amplifier which includes a target anode and an lectron gun for bombarding the anode with an electron beam having an amplitude proportional to that of an input signal. The electron gun includes a NEA semiconductor cold cathode ha... | 06/30/1998 |
| 5767625 | High frequency vacuum tube with closely spaced cathode and non-emissive grid A vacuum tube for handling an r.f. signal having a predetermined frequency range comprises a cathode, a heater, and a non-electron emissive grid. The grid is positioned from the cathode by the distance an emitted electron from the cathode can travel in a ... | 06/16/1998 |
