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31results about How to "Uniform field distribution" patented technology
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Touch Sensor
ActiveUS20180224964A1Improved noise performanceUniform field distributionInput/output processes for data processingPhysicsCapacitance
A capacitive touch sensor device comprising set of crossing X and Y electrodes whose crossing points form a two-dimensional array of nodes which define a touch sensitive area. As well as the main electrode spines which cross, referred to as zeroth order electrode branches, the electrodes have higher order branches, some of which interdigitate. By varying the dimensions of the electrode branches, such as width and length, the overall area of the X and Y electrodes can be varied relatively independently of each other. It is therefore possible to produce an electrode pattern in which the self capacitances of the X and Y electrodes have a certain ratio, e.g. unity, and thereby compensate for the aspect ratio of the touch sensitive area, and / or to have a certain absolute value, e.g. in order not to overload a touch-sensor controller to which the sensor is to be connected.
Owner:SOLOMON SYSTECH
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
Compact electronic reverberation chamber
ActiveUS8693158B2Uniform field distributionEasy to controlResistance/reactance/impedenceElectromagentic field characteristicsUniform fieldControl signal
A method and apparatus provide an improved EM reverberation chamber which facilitates the dynamic three dimensional (3D) manipulation of EM field polarization within the chamber and produces a uniform field distribution inside the chamber. The chamber includes one or more walls with tunable lumped elements. A controller is provided to generate one or more control signals that are applied to the lumped elements and tunes their impedance in response to the one or more control signals. The result is to generate, within the chamber an electromagnetic field that appears to be random or pseudo-random in polarization, but which is sufficiently uniform in magnitude for EM testing.
Owner:THE UNIVERSITY OF HONG KONG
Safety switch for monitoring a closed position of two parts moveable relative to one another
A safety switch, especially for monitoring guard doors on automatic installations, has an actuator (16) and a sensor (18). The actuator (16) includes an actuator antenna (56) and the sensor (18) includes a sensor antenna (46), the actuator (16) and the sensor (18) being transformer coupled to each other when the guard door is in the closed position, Especially like a transceiver. According to one aspect of the invention, the sensor antenna (46) has magnetic orientation properties such that the actuator (16) in at least two mutually perpendicular spatial directions (64, 66, 68) ) Transformer coupling.
Owner:PILZ (COMPANY)
Compact electronic reverberation chamber
ActiveUS20120206849A1Uniform field distributionFine control of field polarizationElectromagentic field characteristicsElectromagnetic relay detailsUniform fieldElectromagnetic field
A method and apparatus provide an improved EM reverberation chamber which facilitates the dynamic three dimensional (3D) manipulation of EM field polarization within the chamber and produces a uniform field distribution inside the chamber. The chamber includes one or more walls with tunable lumped elements. A controller is provided to generate one or more control signals that are applied to the lumped elements and tunes their impedance in response to the one or more control signals. The result is to generate, within the chamber an electromagnetic field that appears to be random or pseudo-random in polarization, but which is sufficiently uniform in magnitude for EM testing.
Owner:THE UNIVERSITY OF HONG KONG
Ultra-high frequency (UHF) radio frequency identification (RFID) reader-writer antenna
ActiveCN102820536AUniform field distributionEfficient automatic identification functionRadiating elements structural formsMetallic materialsRadio frequency
The invention discloses an ultra-high frequency (UHF) radio frequency identification (RFID) reader-writer antenna. The UHF RFID reader-writer antenna consists of an upper metal material conductive layer, a lower metal material conductive layer and an insulating material medium layer positioned between the upper metal material conductive layer and the lower metal material conductive layer, wherein a lower bottom plate is a rectangular pure copper plate; the upper layer is a traveling wave-shaped antenna formed by a pure copper feeder line which is laid on the upper surface of the insulating material medium layer; in order to cover all polarization directions and fully cover the area of the overall antenna, the traveling wave shape of the antenna is required to be not less than a period; moreover, the leftmost side of the antenna is connected with a feed power supply; the tail end of the rightmost side of the antenna is connected with the lower bottom plate through a matching resistor; and the width of the feed line of the antenna and the resistance of the matching resistor both depend on the structural shape of the overall antenna: namely the lengths, the widths and the thicknesses of the upper conductive layer, the lower conductive layer and the intermediate insulating material medium layer, and the dielectric coefficient of the medium material. The antenna has large coverage and long reading distance; and a plurality of tags can also be read effectively when passing through at a high speed. Moreover, the structure is simple; and the project is easy to implement and low in cost.
Owner:北京测态培元科技有限公司
A plasmonic device
InactiveUS20190391302A1Speed up the processControlled heatingMaterial analysis by optical meansOptical elementsMetalMetal grating
A plasmonic device to enhance optical processes in samples lying on or in the proximity of the surface of the device comprises a substrate and a plasmonic structure. The plasmonic structure comprises advantageously a full metal layer and a metal grating in connection with the full metal layer. In addition the plasmonic device may comprise an optional adhesion layer between the substrate and the plasmonic structure and / or, an optional protective layer above the full metal layer or metal grating.
Owner:XFOLD IMAGING OY
Microwave Heater
InactiveUS20090302031A1Drying processImprove uniformityCeramic shaping apparatusOhmic-resistance heatingMicrowaveDepth of penetration
The invention relates to a microwave heater comprising a plurality of microwave generators each emitting microwaves at a frequency in a range of frequencies ranging from 300 MHz to 5.8 GHz which couple into objects to be heated. At least one of the microwave generators emits the microwaves at a first frequency of an upper part of the range of frequencies, the microwaves of the first frequency displaying a first of depth of penetration into the objects to be heated; and at least one other of the microwave generators emits the microwaves at a second frequency of a lower part of the range of frequencies, the microwaves of the second frequency displaying a second depth of penetration into the objects to be heated, the first penetration depth being substantially smaller than the second penetration depth.
Owner:FRICKE & MALLAH MICROWAVE TECH
Touch Sensor
ActiveUS20180224965A1Improve Noise PerformanceIncreased Design FreedomInput/output processes for data processingTouch panelMutual capacitance
In a capacitive touch sensor device, to avoid floating touches causing signal inversion in mutual capacitance measurements, an electrode pattern is used of the type in which the mutual capacitance arises primarily from co-extending electrode portions of the drive and sense electrodes separated by a gap G. The pattern is dimensioned such that the sum of the gap G between co-extending drive and sense electrode portions and the widths Wy of the sense electrodes is made sufficiently small to avoid signal inversion. Namely, the width, Wy, plus the gap, G, is made less than or equal to one of: 4, 3 or 2 times the distance from the touch sensor electrodes to the touch surface, this distance being the touch panel thickness, h.
Owner:SOLOMON SYSTECH
Projector system
InactiveUS20090046254A1Avoid high in transmissionImprove visibilityProjectorsColor television detailsProjection opticsProjection image
An laser based image projection system for displaying images, which comprises an LCD device and projection optics. By introducing a diffuser between the LCD device and the projection optics, the quality of the projected image is improved. The visibility of material imperfections in the optical the beam path, which were previously visible in the projected image due to the large field-of-depth of the system, is now reduced.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Four-ridge pyramidal horn antenna
ActiveCN110323572AGood compatibilityEvenly distributedWaveguide hornsAntennas earthing switches associationUniform fieldHorn antenna
The invention discloses a four-ridge pyramidal horn antenna. The four-ridge pyramidal horn antenna comprises a rectangular waveguide, a pyramidal horn and a feeding port, wherein the rectangular waveguide is of a hollow structure, one end of the rectangular waveguide is connected with the feeding port, the other end of the rectangular waveguide is connected with the pyramidal horn, the pyramidal horn is a hollow rectangular terrace and comprises a waveguide segment ridge and horn segment ridges, the waveguide segment ridge is arranged in the rectangular waveguide, one end of the waveguide segment ridge is contacted with the feeding port, the other end of the waveguide segment ridge is contacted with the horn segment ridges, the horn segment ridges comprise an upper group and a lower group,and each group comprises two branches arranged at two wide walls of the pyramidal horn in a herringbone shape. By optimizing each parameter of a ridge, more uniform field distribution than that of atraditional horn can be achieved, so that higher gain is achieved.
Owner:NANJING UNIV OF POSTS & TELECOMM
Ultrahigh frequency RFID planar near-field antenna with stable coverage
ActiveCN113437509AUniform field distributionStable Uniform Field DistributionRadiating elements structural formsAntenna earthingsDielectric plateMechanical engineering
The invention provides an ultrahigh frequency RFID planar near-field antenna with stable coverage. The ultrahigh frequency RFID planar near-field antenna comprises a metal floor, a dielectric plate and a radiation layer which are stacked in sequence; the radiation layer is composed of a power division network and 2 to 4 radiators; the power division network is located in the middle of the radiation layer, and the radiators are uniformly distributed around the power division network; each radiator comprises a radiator body, a first jumper, a second jumper group and 3 to 18 groups of absorption branches; each radiator body is located in the middle of the radiator, and the absorbing branches surround the radiator body; the power division network comprises first micro-strips of which the number matches that of the radiators; each radiator body is composed of a main body micro-strip; one end of each first micro-strip is connected with one end of the corresponding main body micro-strip at a first point; each main body micro-strip rotates, bends and extends around the corresponding first point; each absorbing branch comprises an arc-shaped micro-strip and a first lumped element; one end of each arc-shaped micro-strip is grounded through the corresponding first lumped element, and the other end is connected with the corresponding main body micro-strip at the outer edge of the corresponding radiator body; the current direction of each arc-shaped micro-strip is opposite to that of the corresponding main body micro-strip.
Owner:SHENZHEN UNIV
Meta-material-based L waveband slow wave structure
ActiveCN108493568AOvercoming the problem of uneven field distributionUniform field distributionDelay linesWave structureMiniaturization
The invention relates to a meta-material-based L waveband slow wave structure. The meta-material-based L waveband slow wave structure utilizes two mutually orthogonally arranged meta-material resonantunits to form a single periodic slow wave structure, and can overcome the problem that electric fields are not distributed uniformly in an electron beam region because of asymmetry of the meta-material slow wave structure, so that the meta-material-based novel L waveband slow wave structure can operate below the cut-off frequency of a hollow metal waveguide with the same size and has an advantages of miniaturization.
Owner:NAT UNIV OF DEFENSE TECH
Double reentrant resonant cavity on-line measuring device for measuring grain moisture content
ActiveCN109085185AHigh measurement accuracyUniform field distributionResonatorsMoisture content investigation using microwavesPhysicsMeasurement device
The invention discloses a double reentrant resonant cavity on-line measuring device for measuring the grain moisture content, and belongs to the technical field of microwave application. The double reentrant resonant cavity on-line measuring device comprises a reentrant sample cavity and a reentrant testing cavity which are coupled mutually and are in butt joint. A sample barrel is arranged in thecenter of the sample cavity, and two coupling structures are symmetrically arranged on the outer side of the testing cavity. The coupling structures stretch into the testing cavity through probes, and thus the testing cavity and a measuring instrument are coupled. According to the double reentrant resonant cavity on-line measuring device, the testing efficiency and the testing precision can be improved, the influences of the sample stacking density on the testing result can be eliminated, and the practicability of the measuring device is improved.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Touch sensor
ActiveUS10423285B2Increased Design FreedomMitigation and prevention of signalInput/output processes for data processingEngineeringTouch panel
In a capacitive touch sensor device, to avoid floating touches causing signal inversion in mutual capacitance measurements, an electrode pattern is used of the type in which the mutual capacitance arises primarily from co-extending electrode portions of the drive and sense electrodes separated by a gap G. The pattern is dimensioned such that the sum of the gap G between co-extending drive and sense electrode portions and the widths Wy of the sense electrodes is made sufficiently small to avoid signal inversion. Namely, the width, Wy, plus the gap, G, is made less than or equal to one of: 4, 3 or 2 times the distance from the touch sensor electrodes to the touch surface, this distance being the touch panel thickness, h.
Owner:SOLOMON SYSTECH
Touch sensor
ActiveUS10235002B2Uniform field distributionSimple post-processingInput/output processes for data processingZeroth orderCapacitance
A capacitive touch sensor device comprising set of crossing X and Y electrodes whose crossing points form a two-dimensional array of nodes which define a touch sensitive area. As well as the main electrode spines which cross, referred to as zeroth order electrode branches, the electrodes have higher order branches, some of which interdigitate. By varying the dimensions of the electrode branches, such as width and length, the overall area of the X and Y electrodes can be varied relatively independently of each other. It is therefore possible to produce an electrode pattern in which the self capacitances of the X and Y electrodes have a certain ratio, e.g. unity, and thereby compensate for the aspect ratio of the touch sensitive area, and / or to have a certain absolute value, e.g. in order not to overload a touch-sensor controller to which the sensor is to be connected.
Owner:SOLOMON SYSTECH
Metamaterial-based low-frequency-band slow wave structure
ActiveCN112820608AHas the advantage of horizontal miniaturizationLong slow wave structure periodTransit-tube circuit elementsWave structureLow frequency band
The invention relates to a microwave source device in the field of high-power microwaves, in particular to a metamaterial-based low-frequency-band slow wave structure which comprises a first metamaterial resonance unit, a second metamaterial resonance unit and a circular waveguide. The first metamaterial resonance unit and the second metamaterial resonance unit are in 45-degree rotation coupling arrangement to form a single period of the slow wave structure. The metamaterial-based low-frequency-band slow wave structurehas the following technical advantages that the metamaterial-basedslow wave structure can work below the cut-off frequency of the hollow metal circular waveguides with the same size, and has the advantage of transverse miniaturization; due to the sub-wavelength characteristic of the metamaterial, the slow wave structure is shorter in period and has the advantage of miniaturization in the axial direction; due to the local field enhancement effect of the metamaterial-based slow-wave structure, the slow-wave structure has higher coupling impedance, and a device has the advantage of higher beam-wave interaction efficiency; strong electromagnetic coupling between metamaterial slow wave structures is stronger in relativistic electron beam modulation, so that the device has shorter oscillation starting time.
Owner:NAT UNIV OF DEFENSE TECH
A double-entry resonant cavity online measuring device for measuring grain moisture content
ActiveCN109085185BEstablish reasonableHigh Q valueResonatorsMoisture content investigation using microwavesMeasurement deviceMeasuring instrument
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Vacuum microwave smelting device
PendingCN113483570AHeating evenlySolve local overheating problemsStirring devicesCharge treatment typeMicrowaveEngineering
The invention discloses a vacuum microwave smelting device. The vacuum microwave smelting device comprises a furnace body, a crucible, a vacuum system, a wave source, a stirring paddle and a cooling pipeline, wherein the furnace body is a horizontal furnace body with a containing cavity, and a microwave breach is formed in the furnace body; the crucible is arranged in the containing cavity, does not make direct contact with the furnace body and is used for metal smelting; the vacuum system communicates with the containing cavity and is used for vacuumizing the containing cavity; the wave source is connected with the microwave breach through a waveguide and is used for conveying microwaves to the containing cavity; the stirring paddle is arranged in the containing cavity and is used for changing electromagnetic field distribution in the containing cavity; and the cooling pipeline is arranged on the furnace body. According to the vacuum microwave smelting device, the single microwave source, large working area, high vacuum and uniform electromagnetic field space distribution statistics are realized, thus uniform heating is guaranteed, and local overheating is avoided.
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS +1
L-band slow-wave structures based on metamaterials
ActiveCN108493568BLong slow wave structure periodShort startup timeDelay linesWave structureMiniaturization
Owner:NAT UNIV OF DEFENSE TECH
UHF radio frequency identification rfid reader antenna
ActiveCN102820536BUniform field distributionEfficient automatic identification functionRadiating elements structural formsMetallic materialsRadio frequency
Owner:北京测态培元科技有限公司
A pulsed power device based on an annular ceramic solid-state wire
ActiveCN104135250BReduced connection inductanceRaise the FrontierPulse shapingPulse power systemsEngineering
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Semiconductor wafer carrier structure and metal-organic chemical vapor deposition device
PendingUS20220349047A1Uniform field distributionPolycrystalline material growthSemiconductor/solid-state device manufacturingSemiconductorWafering
A semiconductor wafer carrier structure includes a carrier body having a surface; a protective film covering the surface; a susceptor disposed on the carrier body; and a patterned coating film on the susceptor, wherein the patterned coating film has two or more different thicknesses, wherein patterns of the patterned coating film are symmetrically distributed with respect to a center of the susceptor.
Owner:PLAYNITRIDE DISPLAY CO LTD
Four-ridge Pyramid Horn Antenna
ActiveCN110323572BGood compatibilityEvenly distributedWaveguide hornsAntennas earthing switches associationQuadrupoleAcoustics
The invention discloses a four-ridge pyramidal horn antenna, which comprises a rectangular waveguide, a pyramidal horn and a feeding port; the rectangular waveguide is a hollow structure, one end is connected with the feeding port, and the other end is connected with the pyramidal horn; The pyramid horn is a hollow quadrangular truss, including a waveguide section ridge and a horn section ridge; the waveguide section ridge is arranged inside the rectangular waveguide, one end is in contact with the feed port, and the other end is in contact with the horn section ridge; the horn section ridge includes There are two sets of upper and lower sets, each of which is arranged in the shape of a "herringbone" in the two wide walls of the pyramid horn. By optimizing various parameters of the ridge, the invention can realize more uniform field distribution than the traditional horn, thereby realizing higher gain.
Owner:NANJING UNIV OF POSTS & TELECOMM
Solar cell inverter of MgZnO film transistor having circular structure and preparation method thereof
InactiveCN110190133ALow priceSuitable for mass manufacturingTransistorSemiconductor/solid-state device manufacturingEngineeringSolar cell
The invention discloses a solar cell inverter of a MgZnO film transistor having a circular structure and a preparation method thereof. The MgZnO film is prepared, the solar cell inverter structure isdesigned, and the inverter structure is a combination of electrode-insulating layer-channel layer-electrode structures and is formed by sequentially laminating and assembling by a Cr electrode, a SiO2substrate, an MZO channel and an Au electrode. Compared with a traditional inverter, the solar cell inverter has a high blocking voltage and a high pinch-off voltage, is safe and non-toxic and is suitable for use in solar power generation in daily life, the price is lower than that of an IGZO material, the solar cell inverter is suitable for use in large-scale solar cells, a substrate of the solar cell inverter adopts glass, an MZO film is a transparent film, and the solar cell inverter has a greater advantage in aesthetics than conventional solar cells.
Owner:SHANGHAI UNIV
A UHF RFID planar near-field antenna with stable coverage
ActiveCN113437509BUniform field distributionStable Uniform Field DistributionRadiating elements structural formsAntenna earthingsDielectric plateMechanical engineering
Owner:SHENZHEN UNIV
Lighting device
ActiveCN103649817AUniform tiltUniform field distributionOptical elementsLight equipmentComputational physics
Lighting device, comprising a light source (1), which can generate the light (5) used for lighting, optical means, which can generate a first field distribution (7) of the light (5) in a first plane (10), lens means (8), which are arranged downstream of the first plane (10) in the propagation direction of the light (5), such that the first field distribution (7) of the first plane (10) can be imaged by the lens means (8) into a second plane (11), such that a second field distribution (9) can arise there, wherein the plane (12) in which the lens means (8) extend and / or the second plane (11) are / is inclined relative to the first plane (10).
Owner:LIMO GMBH
Microwave pyrolysis carbonization furnace resonant cavity
PendingCN109181722AUniform field distributionImprove efficiencySpecial form destructive distillationResonant cavityCarbonization
The invention discloses a microwave pyrolysis carbonization furnace resonant cavity. The microwave pyrolysis carbonization furnace resonant cavity comprises four rectangular waveguides (2), a resonantcavity (1) is a rectangular parallelepiped box body, and two of the rectangular waveguides (2) are respectively fixed at each of the upper parts of the opposite inner side surfaces of the resonant cavity (1), wherein the feed ports of the two rectangular waveguides (2) in a diagonal position are transversely arranged, the long edges of the transversely-arranged feed ports are parallel to the bottom surface of the resonant cavity (1), the longitudinal ports of the remaining two rectangular waveguides (2) in the diagonal position are transversely arranged, and the short edges of the transversely-arranged feed ports of the longitudinal ports are parallel to the bottom surface of the resonant cavity (1). The field distribution in the cavity can be uniform without increasing the power of existing magnetrons, so the working efficiency is improved.
Owner:HUZHOU TEACHERS COLLEGE
A low-frequency slow-wave structure based on metamaterials
ActiveCN112820608BHas the advantage of horizontal miniaturizationLong slow wave structure periodTransit-tube circuit elementsWave structureLow frequency band
The invention relates to a microwave source device in the field of high-power microwaves, and is a low-frequency slow-wave structure based on metamaterials, comprising a first metamaterial resonance unit, a second metamaterial resonance unit and a circular waveguide; the first metamaterial resonance unit and the The second metamaterial resonant unit is arranged in a 45-degree rotational coupling to form a single period of the slow-wave structure; the present invention has the following technical advantages: using a metamaterial-based slow-wave structure, it can work below the cut-off frequency of a hollow metal circular waveguide of the same size , has the advantage of lateral miniaturization; due to the sub-wavelength characteristics of metamaterials, the slow-wave structure has a shorter period and has the advantage of miniaturization in the axial direction; due to the local field enhancement effect of the metamaterial slow-wave structure, the slow-wave structure has a higher coupling impedance, The device has the advantage of higher beam-wave interaction efficiency; the strong electromagnetic coupling between the slow-wave structures of metamaterials has a strong modulation of the relativistic electron beam, which makes the device have a shorter start-up time.
Owner:NAT UNIV OF DEFENSE TECH
Tubular bag machine for filling a product
ActiveCN103998342AExcellent machine controlAccurate detectionSolid materialPackaging automatic controlBiomedical engineeringControl unit
Owner:星德科包装解决方案私人有限责任公司
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