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8179045 |
Slow wave structure having offset projections comprised of a metal-dielectric composite stack
A traveling wave amplifier circuit to receive an RF wave and an electron sheet beam and to effect synchronized interaction therebetween. The circuit includes a wave guide having at least a first...
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8179048 |
High frequency helical amplifier and oscillator
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...
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8174200 |
Piezoelectric transformer driving device, cold-cathode tube inverter, cold-cathode tube driving device, and image forming apparatus
A piezoelectric transformer driving device including: an oscillator; a frequency-divider outputting a pulse by dividing a clock signal from the oscillator by a frequency-divide ratio received...
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7952287 |
Traveling-wave tube 2D slow wave circuit
A two-dimensional circuit for a traveling-wave tube for millimeter and sub-millimeter electromagnetic waves synchronously interacts with an electron beam in a vacuum electronic microwave amplifier...
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7952288 |
Power supply apparatus and high-frequency circuit system
The present invention includes a Zener diode connected between a helix electrode and an anode electrode, a transistor that closes or opens a circuit between a cathode and an anode of the Zener...
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7898181 |
Traveling wave tube
A bottom portion of a metal tape is attached to an end portion of a helix. A coaxial inner conductor for input or output of a high frequency signal is fixed by its end portion being interposed...
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7893620 |
Traveling-wave tube turn-off body energy circuit
An apparatus that includes a traveling-wave tube having an electron gun having a cathode. The apparatus also includes a first power supply for establishing a first electric potential between the...
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7888873 |
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...
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7842907 |
Microwave generator
A microwave generator (10) having a hollow central electrode (12) with a front face including hollow emmission element (18), and having an outer electrode (14), which coaxially surrounds the...
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7812540 |
Method for making electrodes and vacuum tube using same
The invention relates to vacuum tubes and especially to electron tubes. To produce the tube, and especially an electron collector comprising several electrodes, the electrodes are produced in the...
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7750572 |
High-power microwave tube with beam spreading in the collector
The invention relates to a microwave power tube consisting of an electron gun comprising a cathode that generates an electron beam in a microwave structure of the tube, and a collector for...
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7683551 |
Processing method and processing device of conditioning electron gun
Discharge factors existing on a surface of an electrode or an insulator forming an electron gun are removed efficiently and effectively, thus simply and easily enhancing the withstand voltage...
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7638946 |
Apparatus and method for trajectory modulation of an electron beam
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...
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7579778 |
Traveling-wave tube with integrated ion trap power supply
A traveling-wave tube system and a method for protecting a cathode of a traveling-wave tube system. The system has an electron gun and a power supply that applies an electric potential between a...
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7538608 |
Photonic crystal ribbon-beam traveling wave amplifier
A RF amplifier includes a RF input section for receiving a RF input signal. At least one single-sided slow-wave structure is associated with the RF interaction section. An electron ribbon beam that...
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7489084 |
Power supply apparatus and high frequency circuit system
A power supply apparatus for supplying predetermined supply voltages respectively to an anode electrode, a cathode electrode, a collector electrode, and a helix of an electron tube. The power...
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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...
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7348569 |
Acceleration of charged particles using spatially and temporally shaped electromagnetic radiation
A method and apparatus for accelerating charged particles are disclosed, wherein the method comprises using at least a transverse component of a temporally and spatially shaped electromagnetic...
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7315113 |
Color cathode-ray tube and method for producing the same
A conductive film isolated from an inner conductive film is formed on an inner wall of a neck. Assuming that, among a plurality of focusing electrodes constituting an electron gun, a position in a...
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7315126 |
Folded waveguide traveling wave tube having polepiece-cavity coupled-cavity circuit
An amplifying device comprises an electron gun emitting an electron beam, a collector spaced from the electron gun, the collector oriented to collect electrons of the electron beam emitted from the...
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7230384 |
Robust RF interface in a TWT
Apparatus and methods provide a robust radio frequency (RF) interface for a helix-type traveling wave tube (TWT). As a vacuum device, the RF input to the TWT and the RF output from the TWT are...
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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...
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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...
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7190108 |
Methods and apparatus using pulsed and phased currents in parallel plates, including embodiments for electrical propulsion
First and second parallel conducting plates include arrayed conducting segments, preferably with specific spacing relative to each other and to the separation of the plates. Currents through the...
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7173364 |
Cathode ray tube and anode button positioned on funnel therefor
Disclosed are a cathode ray tube and a funnel therefore. An anode button is installed on the funnel to meet the condition of 2.8≦T, in which T is a B/A ratio, A is a distance on a central axis of t...
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7142052 |
Travelling wave amplifiers
A traveling wave amplifier (TWA) comprising two or more amplification modules, the inputs of adjacent amplification modules being connected together by a first inductance component of a first...
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7138860 |
System and method for envelope modulation
A power control system for a satellite receiving radio-frequency signals includes a digital processor and a traveling wave tube amplifier system and corresponding traveling wave tube. An anode...
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7088048 |
Device and process for switching and controlling an electron dose emitted by a micro-emitter
This invention relates to a device for switching and controlling an electron dose emitted by a micro-emitter comprising a sensor module (30) that receives the output current from the micro-emitter...
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7071624 |
Microwave tube system and microwave tube
A microwave tube has a configuration in which the connection between an anode electrode and the helix is cut, the helix is grounded, and a current suppression element is provided between the anode...
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7067980 |
Shinged structures for vacuum microelectronics and methods of manufacturing same
An improved Klystron device is disclosed which has opposed electrostatic (ES) magnetic field generating members which are uniformly spaced along a longitudinal axis to form an electron beam...
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7042174 |
Method of generating independent top and bottom corners correction using one 4th order function
A method and circuit for generating independent top and bottom corner correction using a single fourth order function is described. The top and bottom corner correction signal may be included in an...
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7034463 |
Traveling-wave tube having heat radiating structure with high thermal conductivity
A traveling-wave tube is provided which has a heat radiating structure with good heat conductivity from the collector core to the heat sink. An insulator is disposed around and in contact with the...
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7034462 |
Power supply circuit for traveling-wave tube which eliminates large relay and relay driving power supply
A power supply circuit for a traveling-wave tube disclosed herein eliminates a large relay and a relay driving power supply to reduce the size and cost and to make itself tolerable to vibrations...
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6998782 |
Circuit for generating a process-independent current
Based, in part, on an input video signal, an autobias circuit generates red, green, and blue channel video signals, which are received by external drivers to drive cathodes in a CRT. The autobias...
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6987360 |
Backward wave coupler for sub-millimeter waves in a traveling wave tube
A slow wave structure for coupling RF energy with an electron beam comprises a co-propagating RF section including a plurality of pins having a uniform separation from the plane of an electron beam...
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6940229 |
Glass bulb for cathode ray tube
With respect to a highly flat glass bulb for cathode ray tube having an effective screen diameter along a diagonal axis of a glass panel 10 of more than or equal to 500 mm, and an average radius of...
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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...
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6894439 |
Portable power converter pack
A portable power converter comprising input means to receive low voltage DC input, voltage converter means for converting the low voltage DC input into high DC voltage output, the voltage converter...
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6894732 |
Display apparatus having improved interconnection to video printed circuit board
A display apparatus has a cathode ray tube bulb which includes a panel displaying a picture thereon, a funnel combined with the panel, and a neck connected to the funnel. The display apparatus...
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6803725 |
On-chip vacuum microtube device and method for making such device
In accordance with the invention, improved vacuum microtube devices are provided with arrangements for tunably spacing the gate and the cathode. Tuning can be effected by using an electrostaic or...
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6777876 |
Power-supply unit for microwave tube
In a power-supply unit for a microwave tube, voltage between a helix power supply terminal and a cathode power supply terminal is divided into voltage slightly lower than the voltage of a collector...
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6771023 |
System and method for regulating cathode ray tube beam current using autobias
A system for regulating beam current in a cathode ray tube. The system includes test signal timing and pulse generation logic for outputting test signals operable to stimulate a cathode ray tube at...
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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 ...
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6747412 |
Traveling wave tube and method of manufacture
A traveling wave tube includes a glass or other insulating envelope having a plurality of substantially parallel glass rods supported therewithin which in turn support an electron gun, a collector...
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6703783 |
Focus voltage control arrangement
A video imaging apparatus comprises first and second cathode-ray tubes, each having an ultor electrode and a focus electrode. A power supply generates an ultor voltage, which may have a fluctuating...
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6670620 |
Electron gun, illumination apparatus using the electron gun, and electron beam exposure apparatus using the illumination apparatus
An electron gun, having an electron source, a Wehnelt electrode, and acceleration electrodes, includes a control device for changing a field distribution formed by a first acceleration electrode of...
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6664734 |
Traveling-wave tube with a slow-wave circuit on a photonic band gap crystal structures
A printed circuit Traveling-Wave Tube (TWT) with a vacuum housing containing either a pair of identical meanderline slow-wave interaction circuits or a pair of multi-arm spiral slow-wave...
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6653787 |
High power density multistage depressed collector
A collector for a linear beam has a segmented ceramic collector core that permits sustained operation at high temperatures and power densities. The collector provides efficient heat transfer from...
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6646381 |
Cathode-ray tube apparatus
A main lens of an electron gun assembly comprises a sixth grid, a seventh grid, an eighth grid, and a ninth grid. An asymmetric lens section is created between a fifth grid and the sixth grid on a...
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6614159 |
Electron gun for cathode ray tube
A cathode ray tube has a three-gun type electron gun. The electron gun includes a cathode, a G1 electrode, a G2 electrode aligned in line in this order, the G1 electrode and the G2 electrode having...
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