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83 results about "Pulse forming line" patented technology
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Pulse forming x-ray laser
A capillary discharge x-ray laser driven by a radial pulse forming line. Both Blumlein and transmission line configurations of the pulse forming line in single and multiple stage arrangements are presented.
Owner:SDG LLC
Beam Transport System and Method for Linear Accelerators
A charged particle beam transport system and method for linear accelerators includes a lens stack having two electrodes serially arranged along an acceleration axis between a charged particle source, and a linear accelerator. After producing and extracting a bunch of charged particles (i.e. particle beam) from the particle source, a voltage difference between the two electrodes is ramped in time to longitudinally compress the particle beam to be shorter than the pulsewidth of acceleration pulses produced in the accelerator. Additional electrodes may be provided in the lens stack for performing transverse focusing of the charged particle bunch and controlling a final beam spot size independent of the current and energy of the particle beam. In a traveling wave accelerator embodiment having a plurality of independently switchable pulse-forming lines, beam transport can also be controlled by triggering multiple adjacent lines simultaneously so that the physical size of the accelerating electric field is longer than the charged particle bunch, as well as by controlling trigger timing of the pulse-forming lines to perform alternating phase focusing.
Owner:LAWRENCE LIVERMORE NAT SECURITY LLC
Coiled Transmission Line Pulse Generators
InactiveUS20080284276A1Increase pulse repetition rate capabilityImprove reliabilityMaterial nanotechnologyElectrostatic generators/motorsDielectricTransformer
Methods and apparatus are provided for fabricating and constructing solid dielectric “Coiled Transmission Line” pulse generators in radial or axial coiled geometries. The pour and cure fabrication process enables a wide variety of geometries and form factors. The volume between the conductors is filled with liquid blends of polymers and dielectric powders; and then cured to form high field strength and high dielectric constant solid dielectric transmission lines that intrinsically produce ideal rectangular high voltage pulses. Voltage levels may be increased by Marx and / or Blumlein principles incorporating spark gap or, preferentially, solid state switches (such as optically triggered thyristors) which produce reliable, high repetition rate operation. Moreover, these pulse generators can be DC charged and do not require additional pulse forming circuitry, pulse forming lines, transformers, or an output switch. The apparatus accommodates a wide range of voltages, impedances, pulse durations, pulse repetition rates, and duty cycles. The resulting mobile or flight platform friendly cylindrical geometric configuration is much more compact, light-weight, and robust than conventional linear geometries, or pulse generators constructed from conventional components. Installing additional circuitry may accommodate optional pulse shape improvements. The Coiled Transmission Lines can also be connected in parallel to decrease the impedance, or in series to increase the pulse length.
Owner:SCI ENG SOLUTIONS
Systems and methods for generating high power, wideband microwave radiation using variable capacitance voltage multiplication
InactiveUS20090224610A1Reduce capacitanceIncrease distanceAmmunition projectilesPulse train generatorRadiation pulseElectromagnetic pulse
Systems and methods for generating high power, wideband microwave radiation pulses. A pulse generating device includes a capacitor as a primary electric energy store, a source of mechanical or chemical energy for modifying the capacitance of the capacitor, which then connects to a transmission line or pulse forming line (PFL) with many times increased electromagnetic energy, a switch and a broadband radiating element such as an antenna. A high voltage pulse and accordingly a high amount of electromagnetic energy is formed owing to decreasing the capacitance of an initially charged capacitor by dynamically changing a configuration of capacitor electrodes using mechanical work. The final configuration forms a transmission line, with the voltage and electric energy increased by the ratio of initial capacitance to final capacitance when the charge on the modifying capacitor is conserved. A switch connects opposite charged parts of the transmission line, and the resulting high voltage in the form of a pulse or multiple pulses propagates along the transmission line to a load (antenna) to generate one or more electromagnetic pulses.
Owner:MICROWAVE SCI
Bipolar pulse forming line
InactiveUS20070013315A1Multiple-port networksSubstations coupling interface circuitsElectrical conductorHigh pressure
A bipolar pulse forming transmission line module for linear induction accelerators having first, second, third, fourth, and fifth planar conductors which form an interleaved stack with dielectric layers between the conductors. Each conductor has a first end, and a second end adjacent an acceleration axis. The first and second planar conductors are connected to each other at the second ends, the fourth and fifth planar conductors are connected to each other at the second ends, and the first and fifth planar conductors are connected to each other at the first ends via a shorting plate adjacent the first ends. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short a high voltage from the first end of the third planar conductor to the first end of the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.
Owner:LAWRENCE LIVERMORE NAT SECURITY LLC
Nanosecond rising edge high-voltage square wave pulse generator
ActiveCN102427346AAccurately calibrate the divider ratioAccurately calibrated response timePulse train generatorLow voltageElectrical connection
The invention discloses a nanosecond rising edge high-voltage square wave pulse generator, which comprises a direct current high-voltage power supply, a resistor, a pulse forming line, a pulse transmission line, a mercury switch and a control circuit, wherein the direct current high-voltage power supply is sequentially connected with the resistor, the pulse forming line, the mercury switch, the pulse transmission line and a load; and the control circuit controls the turning on and turning off of the mercury switch. By the nanosecond rising edge high-voltage square wave pulse generator, the divider ratio and response time of a voltage divider can be accurately calibrated; not only the rise time of output square waves is ensured, but also the output voltage of the direct current high-voltage power supply can be continuously regulated; the low-voltage control circuit and a high-voltage main circuit are electrically isolated; and the adopted mercury switch is inevitably at a broken position when a control end is broken, so that electrical connection is cut off, and the whole device is safer.
Owner:CHINA ELECTRIC POWER RES INST +1
Bipolar pulse forming line
InactiveUS7440568B2Multiple-port networksInterconnection arrangementsElectrical conductorHigh pressure
A bipolar pulse forming transmission line module for linear induction accelerators having first, second, third, fourth, and fifth planar conductors which form an interleaved stack with dielectric layers between the conductors. Each conductor has a first end, and a second end adjacent an acceleration axis. The first and second planar conductors are connected to each other at the second ends, the fourth and fifth planar conductors are connected to each other at the second ends, and the first and fifth planar conductors are connected to each other at the first ends via a shorting plate adjacent the first ends. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short a high voltage from the first end of the third planar conductor to the first end of the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.
Owner:LAWRENCE LIVERMORE NAT SECURITY LLC
Beam transport system and method for linear accelerators
Owner:LAWRENCE LIVERMORE NAT SECURITY LLC
Repetition frequency voltage-multiplying square-wave generator based on magnetic switch
ActiveCN102916680AReduced volt-second product requirementsFast chargingPulse train generatorCapacitanceElectrode erosion
The invention discloses a repetition frequency voltage-multiplying square-wave generator based on a magnetic switch. The repletion frequency voltage-multiplying square-wave generator comprises an adjustable pulse source, a magnetic pulse compressor circuit, a square-wave voltage multiplying Marx generator and a matched load. The square-wave generator is connected behind a main capacitor or pulse transformer in a cascading manner, is subjected to parallel charging to various stages of pulse forming lines, and then subjected to series discharging to the matched load so as to obtain output square-wave pulse, and therefore purposes of voltage multiplying, high-repetition frequency and rising edge compression are achieved. The magnetic switch serves as a pulse forming switch and substitutes for a conventional gas switch. Due to the fact that the magnetic switch has no problems of electrode erosion and insulation restoration, the generator can run at high-repetition frequency. In the following embodiment, the square-wave source can reach the repetition working frequency over 20 kHz which is much higher than the 100Hz-level repetition working frequency of a conventional square-wave source based on the pulse forming lines. In addition, the magnetic switch also has an effect of sharpening rising edges of square waves.
Owner:XI AN JIAOTONG UNIV
Novel high-pressure square-wave pulse generating system
The invention provides a novel high-pressure square-wave pulse generating system, comprising a primary charging power supply, a control system, a triggering power supply, a multilevel pulse forming line high pressure generating system and a load system, wherein the primary charging power supply is connected with the control system, the control system is connected with the triggering power supply, the multilevel pulse forming line high pressure generating system comprises a plurality of parallel pulse forming lines, the pulse forming lines are connected to two electrodes of the primary charging power supply through inductors, one electrode of one pulse forming line is grounded, and the opposite electrode of the other pulse forming line is connected with the load system and is grounded, gas spark clearance switches are arranged between the pulse forming lines, two switches are connected with the triggering power supply, and the two extraction electrodes of the pulse forming lines are in flat panel output structures. The multilevel of forming lines are serially overlapped to output high pressure pulse square waves, which reduces a level of pulse compression process and simplifies the system.
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Coiled transmission line pulse generators
InactiveUS7830040B2Reducing the electric field potentialIncrease pulse repetition rate capability and reliabilityMaterial nanotechnologyElectric pulse generator circuitsDielectricTransformer
Owner:SCI ENG SOLUTIONS
High-voltage pulse power supply for measuring space charge under alternating-current electric field
ActiveCN103529255AAvoid the technical problem of high frequency response characteristicsReduce economic costsElectrical measurement instrument detailsElectrical testingHigh-voltage direct currentField-effect transistor
The invention discloses a high-voltage pulse power supply for measuring the space charge under an alternating-current electric field, and belongs to the field of a control circuit design of the high-voltage pulse power supply. The high-voltage pulse power supply comprises a phase control circuit and a high-voltage pulse forming circuit, wherein the phase control circuit comprises a capacitive voltage divider, a second-order low-pass filtering circuit, a voltage zero-crossing comparison circuit and a signal generator; and the high-voltage pulse forming circuit comprises a high-voltage direct-current source, a charging resistor, a coaxial cable, a switch and a matching resistor. The high-voltage pulse power supply disclosed by the invention has the advantages that simulation and design of an electronic circuit, a power electronic device MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) control technology and a pulse power technology are combined, and the design scheme uses a high-voltage direct-current source module without using a pulse transformer, so that the technical difficulty that the requirement for the frequency response characteristic of the transformer is high is avoided and simultaneously the economic cost of the transformer additionally bought is reduced; and the pulse width and the frequency of output pulse of the high-voltage pulse power supply are flexibly adjusted by changing the length of the pulse forming line and setting a pulse-string output function of the signal generator.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Bipolar transmission line type nanosecond pulse generator
InactiveCN108173534ARequirements for lower withstand voltageReduce volumeAc-dc conversionApparatus with intermediate ac conversionCircuit complexityCopper wire
The invention discloses a bipolar transmission line type nanosecond pulse generator, comprising an AC power supply module and a pulse module. The output end of a power frequency AC source is connectedwith the input end of a diode rectifier bridge through an input current limiting resistor. The output end of the diode rectifier bridge is connected with the input end of an H bridge circuit througha voltage stabilization capacitor. The output end of the H bridge circuit is connected with the input end of a boost transformer. The output end of the boost transformer is grounded through an input resistor, the central copper wire of a first coaxial cable, a load output impedor and the central copper wire of a second coaxial cable. The two ends of the first coaxial cable and the two ends of thesecond coaxial cable are jointly grounded. One end of a control switch is connected to a node between the input resistor and the first coaxial cable, and the other end of the control switch is grounded. Pulses are output from both ends of the load output impedor. The beneficial effects are as follows: the AC source is used as an excitation source of a Blumlein pulse forming line, and a bipolar steep-fronted narrow width nanosecond pulse can be produced; and the bipolar transmission line type nanosecond pulse generator has the advantages of simple structure, low circuit complexity, and easy miniaturization.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Pulse-forming line with reentry structure
ActiveCN105071787AImprove transmission efficiencyElectric pulse generator circuitsElectricityEngineering
The invention belongs to the technical field of pulse power, relates to a pulse-forming line with a reentry structure and aims at reducing the axial length of the pulse-forming line. The pulse-forming line comprises three parts, namely a reentry forming line segment, a switching segment and a load segment. Three coaxial cylinders and an insulating medium of the reentry forming line segment form two pulse-forming lines; in other words, an outer line and an inner line are equal in electrical length and wave impedance; the matching impedance of the load is equal to the sum of the impedances of the outer line and the inner line. The pulse-forming line with the reentry structure has the beneficial effect that the output pulse width of the pulse-forming line with the reentry structure adopted is twice the output pulse width of a traditional pulse-forming line under the condition of the same axial length.
Owner:NORTHWEST INST OF NUCLEAR TECH
Coaxial two-stage reentrant pulse forming line
ActiveCN104953987AImprove energy transfer efficiencySimple structureElectric pulse generator circuitsDielectricHigh resistance
The invention discloses a coaxial two-stage reentrant pulse forming line so as to solve the technical problem of structural complexity of an existing pulse forming line. The technical scheme includes that the coaxial two-stage reentrant pulse forming line comprises a reentrant forming line segment, a main switch segment and a load segment. The reentrant forming line segment comprises four metal cylinders identical in length, a rear end cover and an insulated filling dielectric, the diameters of the four metal cylinders decrease gradually, and the four metal cylinders include an external forming line cylinder, a middle forming line cylinder, a fourth forming line cylinder and an internal forming line cylinder, are sleeved together to form an integrated coaxial structure and form three pulse forming lines including an external line, a middle line and an internal line. The coaxial two-stage reentrant pulse forming line has the advantages that output pulse width of the coaxial two-stage reentrant pulse forming line is three times of that of a coaxial line in the background art, and matched output impedance of the coaxial two-stage reentrant pulse forming line is three times of external line wave impedance, so that energy transmission efficiency of a high-resistance load can be improved; in order to achieve the same output pulse width, the length of the coaxial two-stage reentrant pulse forming line is one third of that of each of a coaxial single line and a coaxial Blumlein line; the coaxial two-stage reentrant pulse forming line is simple in structure.
Owner:NORTHWEST INST OF NUCLEAR TECH
Pulse power device based on annular ceramic solid state line
ActiveCN104135250AImprove the withstand voltage levelEvenly distributedPulse shapingPulse power systemsInductor
The present invention discloses a pulse power device based on an annular ceramic solid state line, which includes several pulse forming lines, two charging inductors, and multiple gas switches connected together as a whole based on a Marx voltage superposition; the pulse forming lines are annular pulse forming lines, and an annular surface of each annular pulse forming line is provided with a gas opening; and the annular pulse forming lines successively overlap together to form one column structure, each charging inductor passes through an inner ring of the annular pulse forming line to be disposed inside the column structure, and an annular insulating plate is disposed between every two annular pulse forming lines. The present invention enables the structure to be more compact with the power volume ratio increased by at least 50% comparing with that of the pulse power system currently reported domestically and overseas, while the coaxial design enables more even electric field distribution of the whole device, thereby benefiting reduction of high-voltage breakdown incidents caused by voltage distortion.
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Light guide self-adaptive narrow-spectrum microwave generation method based on high-energy pulse cluster laser
The invention discloses a light guide self-adaptive narrow-spectrum microwave generation method based on high-energy pulse cluster laser, and aims to solve the problems of large size of a microwave generation device, single frequency point and difficult frequency modulation in an existing microwave generation method. According to the technical scheme, a light guide self-adaptive narrow-spectrum microwave generator composed of a high-energy pulse cluster laser device, a voltage source, a wide-band gap semiconductor device and a radiation output assembly is constructed firstly; the high-energy pulse cluster laser device outputs the high-energy pulse cluster laser adjustable in pulse cluster repetition frequency, pulse width, envelope waveform and GHz high-frequency pulse repetition frequency to the wide-band gap semiconductor device; the voltage source is a solid-state pulse forming line, and generates a pulse voltage to act on the wide-band gap semiconductor device; the wide-band gap semiconductor device generates a high-frequency electric signal under the simultaneous action of the laser and the voltage; and the radiation output assembly is used for radiating the high-frequency electric signal and outputting a microwave signal. By adopting the method, the problems of large size of the microwave generation device, single frequency point and difficult frequency modulation can be solved.
Owner:NAT UNIV OF DEFENSE TECH
Unsplit Bipolar Pulse Forming Line
InactiveUS20080265778A1Multiple-port networksSubstations coupling interface circuitsElectrical conductorEngineering
A bipolar pulse forming transmission line module and system for linear induction accelerators having first, second, third, and fourth planar conductors which form a sequentially arranged interleaved stack having opposing first and second ends, with dielectric layers between the conductors. The first and second planar conductors are connected to each other at the first end, and the first and fourth planar conductors are connected to each other at the second end via a shorting plate. The third planar conductor is electrically connectable to a high voltage source, and an internal switch functions to short at the first end a high voltage from the third planar conductor to the fourth planar conductor to produce a bipolar pulse at the acceleration axis with a zero net time integral. Improved access to the switch is enabled by an aperture through the shorting plate and the proximity of the aperture to the switch.
Owner:LAWRENCE LIVERMORE NAT SECURITY LLC
Air-insulated switch and fast-rise-time high-voltage square wave generator
InactiveCN104639117ACompact structureEasy to operatePulse train generatorElectrical conductorEngineering
The invention discloses an air-insulated switch and a fast-rise-time high-voltage square wave generator. The air-insulated switch comprises an inner conductor, outer conductors, an insulating sleeve and a trigger pin which are arranged coaxially, wherein the trigger pin moves forward and backward along the center of a through hole under the action of an electromagnet driving mechanism to impact the inner conductor for triggering. The fast-rise-time high-voltage square wave generator comprises a high-voltage power supply, a charging resistor, a primary pulse forming line, a secondary pulse forming line, the air-insulated switch and a load. The air-insulated switch is compact in structure and convenient to operate, and only requires a certain insulation distance kept between the inner conductor and the outer conductors without no other insulation media (solid films, liquid-insulated media or insulating gases such as nitrogen, and the like) and a vacuumizing mode. The fast-rise-time high-voltage square wave generator has the advantages of fast square wave output rise time, high amplitude value, precision and convenience in square wave amplitude value adjustment and the like.
Owner:NORTHWEST INST OF NUCLEAR TECH
Square-wave generator and system and method for calibratig resistance voltage divider
InactiveCN102053236AFast rising edgeMeet the requirements of square wave signalElectrical measurementsHigh pressureVoltage divider
The invention discloses a system and a method for calibrating a water resistance voltage divider and a square-wave generator. The system comprises a square-wave generator and a water resistance voltage divider connected with the square-wave generator which is used for providing a square-wave signal and comprises a DC (Direct Current) voltage generator, a pulse forming line, a high-voltage gas switch and an output end in connection, wherein the DC voltage generator is used for outputting a DC voltage for charging the pulse forming line; and when the spark gap of the high-voltage gas switch is broken down by the pulse forming line, the output end outputs a square-wave signal. The water resistance voltage divider is calibrated by adopting the square-wave generator, and the generated square-wave signal rising edge has higher speed. A coaxial cable is adopted to connect a square-wave source and a specified-measuring calibration system as well as the measured water resistance voltage divider, and a broadband coaxial attenuator can decrease the amplitude of an original waveform and have less distortion so that the water resistance voltage divider can be accurately calibrated finally.
Owner:XI AN JIAOTONG UNIV +2
Pulse power device based on annular ceramic solid state line
InactiveUS20170194951A1Large filed intensityRaise the possibilityPulse generation by energy-accumulating elementPulse shapingInductorEngineering
A pulse power device based on an annular ceramic solid state line. The pulse power device comprises several pulse forming lines (2), two charging inductors (1), and several gas switches that are connected as a whole based on Marx voltage superposition. The pulse forming lines (2) are annular pulse forming lines (2), and the annular surface of each annular pulse forming line (2) is provided with one gas switch. The annular pulse forming lines (2) are successively superposed together to form a column structure through the gas switches. Each charging inductor (1) passes through the inner ring of each annular pulse forming line (2) to be disposed inside the column structure. An annular insulation plate (3) is disposed between every two annular pulse forming lines (2).
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Preparing process of great size energy-storing dielectric ceramic
The great size energy-storing dielectric ceramic is prepared with ceramic material and borosilicate glass powder, through the steps of: dry stirring to compound mixed powder material for preparing borosilicate glass powder; high temperature smelting the mixed powder material and water quenching to prepare borosilicate glass powder; wet ball milling to obtain water-base slurry comprising ceramic material CaTiO3, BaTiO3, SrTiO3, SrZrO3, PZT, PbTiO3 and / or TiO2 and borosilicate glass powder accounting for 0.5-10 wt% of the solid material; spray pelletizing to prepare spherical grains; cold isostatic pressure forming great size ceramic biscuit; machining and singtering at 1150-1400 deg.c to obtain great size energy-storing dielectric ceramic. The great size energy-storing dielectric ceramic has high density, dielectric constant of 80-2000, voltage withstand higher than 30 kV / cm, and may be used as the energy-storing of pulse forming line and other high voltage system.
Owner:WUHAN UNIV OF TECH
Rolled strip pulse forming line based on high energy storage density liquid medium
InactiveCN106788343AIncrease the pulse widthIncrease the lengthPulse generation by energy-accumulating elementLiquid mediumElectrical conductor
The invention discloses a rolled strip pulse forming line based on a high energy storage density liquid medium, which is designed to solve the problems of small output pulse width, large volume and weight, irrecoverability after breakdown, etc. The invention comprises the high energy storage density liquid medium, metal strips, a retaining plate, and an insulation encapsulation part. The metal strips are in the slots of the retaining plate. The retaining plate is in the insulation encapsulation part. The high energy density liquid medium is poured into the insulation encapsulation part, which surrounds all the metal strips and fills the entire inner space of the insulation encapsulation part. The metal strips are consisted of three swirly convoluted metal strips. The shape of the slots of the retaining plate is swirl lines. In the invention, long conductor length is obtained in a small geometric space with excellent electromagnetic shielding being guaranteed. The energy density is increased. Moreover, the pulse width of the output quasi square wave pulse is increased effectively. Besides, the device is easy to build and maintain with low cost. The invention is appropriate for a high voltage electrical pulse generating system.
Owner:NAT UNIV OF DEFENSE TECH
L-waveband double-injection double-frequency relativistic magnetron
InactiveCN108807117ASmall geometryAvoid Electronic Efficiency ImpactsRising-sun magnetronsPulse forming lineMicrowave technology
The invention discloses an L-waveband double-injection double-frequency relativistic magnetron, and belongs to the technical field of microwave sources in the high-power microwave technology. The magnetron comprises two high-frequency systems which are in axial communication, and the two high-frequency systems adopt single-port radial output. The magnetron meets the requirement for matching with alow-impedance high-power driving source; the geometrical size of the pulse forming line is reduced, and the whole high-power microwave system is miniaturized and compact. Meanwhile, based on the low-impedance high-power driving source, the single high-frequency system connected in the axial direction can still work under a high-impedance condition, so that influence to the electronic efficiency of the single high-frequency system caused by reduction of the geometric size of the pulse forming line is avoided.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Brew Rayne pulse-forming line voltage multiplier
The invention provides a Brew Rayne pulse-forming line voltage multiplier. The voltage multiplier is formed by stacking of a plurality of single-stage flat-plate Brew Rayne pulse-forming lines in a crossed mode, and each single-stage flat-plate Brew Rayne pulse-forming line comprises a ceramic solid-state flat-plate transmission line, a GaAs photoconductor switch, a laser diode triggering system and a non-inductive resistance load. The single-stage flat-plate Brew Rayne pulse-forming lines are compactly distributed on a platform to form a multi-stage stacking flat-plate Brew Rayne pulse-forming line voltage multiplier. According to the Brew Rayne pulse-forming line voltage multiplier, short pulse high voltage output several times higher than the amplitude of output voltage of each ingle-stage flat-plate Brew Rayne pulse-forming line and with a nanosecond pulse width can be obtained, and through the fact that multiple groups of multi-stage stacking flat-plate Brew Rayne pulse-forming line voltage multiplier can be formed by multiple groups of multi-stage flat-plate Brew Rayne pulse-forming line voltage multipliers or multi-stage stacking flat-plate Brew Rayne pulse-forming line with more stages are designed, short pulse high voltage with a higher voltage amplitude and higher peak power can be obtained.
Owner:INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
Coaxial spiral re-entry pulse forming line
ActiveCN105306016ASimple structureWaveform distortion is smallElectric pulse generator circuitsRe entryElectrical conductor
The invention belongs to the technical field of pulse power, relates to a coaxial spiral re-entry pulse forming line and aims at solving a problem that the coaxial spiral re-entry pulse forming line adopts a multistage re-entry structure to realize a complicated structure under multiple pulse widths. The coaxial spiral re-entry pulse forming line comprises three parts including a re-entry forming line segment, a main switch segment and a load segment, wherein the re-entry forming line segment comprises three coaxially nested conductor cylinders, namely an outer cylinder, a middle cylinder with a stepped inner surface and a spiral inner cylinder, and two pulse forming lines (an outer line and a non-uniform spiral re-entry line) are formed, wherein the non-uniform spiral re-entry line includes a plurality of spiral line sections. The coaxial spiral re-entry pulse forming line has the beneficial effects that the multiple-pulse-width output is realized through the spiral re-entry structure, and the coaxial spiral re-entry pulse forming line is simple in structure and easy to realize.
Owner:NORTHWEST INST OF NUCLEAR TECH
Nano-second pulse generator with adjustable pulse width and output impedance
The invention discloses a nano-second pulse generator with adjustable pulse width and output impedance, which is mainly composed of a direct current power supply, a pulse generation circuit, a drive circuit and a trigger circuit. The pulse generation circuit comprises a Blumlein type pulse forming line, a MOSFET (Metal-Oxide -Semiconductor Field Effect Transistor) and a load; the pulse forming line comprises a first transmission line and a second transmission line, which are coaxial lines and are connected with a circuit board of the pulse generation circuit through a BNC or SMA interface; the MOSFET is connected between an inner conductor and an outer conductor at one end of the first transmission line through a source electrode and a drain electrode; the direct current power supply is connected with the inner conductor at the end of the first transmission line; and the trigger circuit is connected with a grid electrode of the MOSFET through the drive circuit. According to the invention, the double-transmission line Blumlein type pulse forming line is adopted, and the MOSFET is used as a high speed switch, thus, high-frequency nano-second pulse output can be realized, moreover, the output impedance and the pulse width of the power supply are adjustable.
Owner:ACAD OF OPTO ELECTRONICS CHINESE ACAD OF SCI
Blumlein-type pulse forming system with thin-film capacitors triggered by square waves
ActiveCN103269214ALow square wave jitterWaveform amplitude is stableElectric pulse generatorCapacitancePulse forming network
The invention discloses a Blumlein-type pulse forming system with thin-film capacitors triggered by square waves. The pulse forming system comprises a Blumlein-type pulse forming network, a square wave trigger, a main switch and a load, wherein the main switch is used for connecting the Blumlein-type pulse forming network with the square wave trigger; the load is connected to the output terminal of the Blumlein-type pulse forming network; the thin-film capacitor with the capacitance value of 0.8 to 2nF is adopted in each stage in the Blumlein-type pulse forming network; the output terminal of each thin-film capacitor is output fixedly by connecting a wide electrode with three screws; and the square wave trigger comprises an energy-stored pulse forming line, a voltage equalizing circuit and a low shaking switch. By utilizing the thin-film capacitors with the low capacitance values, the pulse forming system has the advantages of being good in impact resistance, excellent in electrical performance, wide in working temperature range, very small in influence on self-performance caused by the environment, long in service life and the like.
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Pulse generation device and method with high repetition frequency, high voltage and subnanosecond risetime
The present invention relates to a pulse generation device and method with high repetition frequency, high voltage and subnanosecond risetime. The pulse generation device comprises a multistage step-like pulse forming line; an input of the multistage step-like pulse forming line is provided in parallel with at least two semi-insulating gallium arsenide cryosars, which are temporally conducted in succession; in service, the semi-insulating gallium arsenide cryosars are conducted through triggering by optical pulses; and each cryosar works in a fixed repetition frequency. Each of the semi-insulating gallium arsenide cryosars connected in parallel is temporally conducted in succession. If the time interval is equal to a working period of a single cryosar dividing by a number of the cryosars, the pulse generation device and method based on semi-insulating gallium arsenide cryosars in the present invention is able to realize pulse output with high repetition frequency, high output voltage and subnanosecond risetime.
Owner:NORTHWEST INST OF NUCLEAR TECH
Pulse modulator
PendingCN110943717AOverall small sizeSmall weightPulse frequency/rate modulationTransformerSoftware engineering
The invention provides a pulse modulator, belonging to the technical field of high voltage, the pulse modulator comprises a power supply, a control unit, an energy storage unit, an accurate triggeringunit and a TESLA transformer with a built-in pulse forming line, and a main switch, and a diode. The energy storage unit is used for electric energy storage and first-stage energy compression, the TESLA transformer with the built-in pulse forming line is used for pulse boosting and energy transmission, and the main switch is used for second-stage energy compression. By optimizing the internal circuit structure and systematically integrating integrated components, the pulse modulator has the advantages of being small in number of separated components, small in size, light in weight and the like, miniaturization and compactness of the high-voltage large-current pulse modulator are truly achieved in engineering, and a foundation is laid for practical application in multiple fields and occasions.
Owner:陕西中控微脉智能科技有限公司
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