Class 330/44 - WITH ELECTRON BEAM TUBE AMPLIFYING DEVICE

Subclass of Class 330 - Amplifiers
Definition: Subject matter wherein the amplifying device is a vacuum
No. of patents: 35
Last issue date: 05/03/2011

Number	Title	Issue Date
7936211	Controlling the performance of a thermionic tube Controlling the performance of the thermionic tube (102) having a cathode (103), a plate (104) and a grid (105) is disclosed. The tube is configured to provide amplification of an audio derived signal (106) and is arranged to apply...	05/03/2011
7782130	Bowtie deflector cavity for a linear beam device 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-optimal phase, improving inte...	08/24/2010
7688132	Method and apparatus for RF input coupling for inductive output tubes and other emission gated devices 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 that increases the fractional ba...	03/30/2010
7368874	Dynamic depressed collector A biasing system for use with a multi-stage depressed collector of a high power amplifier includes one or more adjustable power sources. A power controller provides control signals to the power sources depending on the operational RF power level. For low power appli...	05/06/2008
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
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
7019601	Device for amplifying a high frequency signal The present invention pertains to an amplification device for a high-frequency signal. The invention is particularly adapted for the transmission of radiofrequency signals used for television of radio under frequency modulation. The amplification device for a high-f...	03/28/2006
6909235	Power regulator for intermittent use of traveling wave tube amplifiers in communications satellites A traveling wave tube (TWT) amplifier includes a beam forming electrode (BFE) and a BFE modulator having a bias-based keyer so that the TWT amplifier signals are keyed off during periods when RF power is not to be amplified. Biasing the beam forming electrode voltag...	06/21/2005
6593579	RF modulated electron gun A radio frequency (RF) modulated electron gun includes a cathode, electrically coupled to operate as a source of charged particles, and a grid, positioned apart from the cathode. The grid and the cathode are electrically coupled to a grid voltage source a...	07/15/2003
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
6359378	Amplifier having multilayer carbon-based field emission cathode 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 at a concentration of about 8 to 13 percent to the reactor while supplying energy to t...	03/19/2002
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
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
6100639	Thin diamond electron beam amplifier for amplifying an electron beam and method of producing an amplified electron beam using same A thin diamond electron beam amplifier. The illumination side of a thin diamond is illuminated by a seed electron beam creating electron-hole pairs in the diamond. A voltage potential provides an electric field between the illumination side of the diamond...	08/08/2000
6005351	Flat panel display device using thin diamond electron beam amplifier A thin diamond electron beam amplifier. The illumination side of a thin diamond is illuminated by a seed electron beam creating electron-hole pairs in the diamond. A voltage potential provides an electric field between the illumination side of the diamond...	12/21/1999
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
5691667	RF radiation absorbing material disposed between the cathode and anode of an electron beam tube An r.f. radiation absorbing material able to hold off a 30 to 40 kV voltage difference is described as formed by a silicon rubber loaded with ferrite particles. The material is used to reduce self-oscillation in amplifiers....	11/25/1997
5592053	Diamond target electron beam device An electron beam device includes a diamond layer positioned downstream from and in the path of an electron beam. This diamond layer has a conductance that is responsive to the electron beam. Two electrical contacts on the diamond layer provide connections...	01/07/1997
5536992	Linear electron beam tubes arrangements An inductive output tetrode includes a cylindrical ceramic envelope within which is located an electron gun including a cathode and grid. An annular resonant input cavity into which a high frequency signal is coupled surrounds the envelope and is located ...	07/16/1996
5497053	Micro-electron deflector An electron deflection device responsive to an electrical input signal for producing an output signal includes a focusing array for producing a collimated electron beam input ribbon in the direction of a propagation axis, the input ribbon being elongated ...	03/05/1996
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
5162747	Velocity modulation microwave amplifier with multiple band interaction structures Two or more signal interaction structures (16,18), which may be klystron or traveling wave structures (32,50), are axially disposed in series between an electron gun (12) and a collector (14) for selectively velocity modulating an electron beam (20) gener...	11/10/1992
5119506	Circuit for automatically adjusting the rate of change of amplitude of an output signal over selected input signal amplitude bands A linearity correction circuit for television transmission operates at intermediate frequency to introduce appropriate pre-distortion into the amplitude envelope to compensate for non-linearity in the power amplifier states. An array of parallel current s...	06/02/1992
4949011	Klystron with reduced length In a multicavity klystron amplifier, the drift-tube bore is larger (46) in proportion to the beam size (10) in the non-interacting space between gaps (28) than its size (22) at the gaps (28). This decreases the spacecharge wavelength so that the overall p...	08/14/1990
4905086	Television transmitter employing klystron with nonlinearity correction circuit A television transmitter includes a klystron power amplifier, a non-linearity pre-correction circuit in a stage preceding the klystron power amplifier, a non-linearity detection circuit for detecting the non-linearity of the output of the klystron power a...	02/27/1990
4894586	Crossed-field amplifier bias circuit and method for improved starting The present invention discloses a cross-field amplifier having an anode and cathode with a pair of permanent magnets which create a magnetic field perpendicular to an electric field created between the anode and cathode. An electric bias circuit is connec...	01/16/1990
4887049	Solid state space harmonic amplifier A fully monolithic solid state device compatible with standard semiconduc processing for amplifying radio frequency (RF) microwave and/or millimeter wave signals is disclosed. The device includes an input microstrip transmission line which capacitively c...	12/12/1989
4820688	Traveling wave tube oscillator/amplifier with superconducting RF circuit Microwave oscillators and amplifiers which utilize a superconducting slow-wave circuit. The slow circuit is made from materials which exhibit superconductivity at relatively high critical temperatures. The slow wave circuit is integral with the device's v...	04/11/1989
4763043	P-N junction semiconductor secondary emission cathode and tube A crossed-field amplifier has a cathode in the form of a P-N junction semiconductor which is biased to the conductive state to cause the crossed-field amplifier to amplify. The P and N regions of the semiconductor are connected to an energy source which i...	08/09/1988
4757269	Multi-gigawatt high-efficiency RF amplifier An RF amplifier wherein an IREB interacts with RF energy from an RF energy source coupled via an RF cavity to a tube drift region where the IREB is modulated at the frequency of the RF energy source, to provide high gain amplification at high power and hi...	07/12/1988
4674513	Active microwave cavity for electron paramagnetic resonance (EPR) apparatus This disclosure relates to a microwave amplifier (22) having an active X-Band microwave cavity (33) for use in electron paramagnetic resonance (EPR) measurements on large, lossy, irradiated, samples such as a human finger. The amplifier comprises an input...	06/23/1987
4210845	Trirotron: triode rotating beam radio frequency amplifier High efficiency amplification of radio frequencies to very high power levels including: establishing a cylindrical cloud of electrons; establishing an electrical field surrounding and coaxial with the electron cloud to bias the electrons to remain in the ...	07/01/1980
3942132	Combined electron beam semiconductor modulator and junction laser A combined pulse modulated laser in which a modulated cold cathode device is utilized to excite a combined electron beam bombarded semiconductor device grown integrally with a crystal laser to achieve modulation of the laser output with fast rise and fall...	03/02/1976

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Class 330/44 - WITH ELECTRON BEAM TUBE AMPLIFYING DEVICE