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30 results about "Radiation power density" patented technology
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The radiation energy density is x 10^ J/m 3. In astronomy and astrophysics texts, the energy density in radiation is typically written.
Uwb short-range radar
InactiveUS20070194978A1Avoid radiationMaximum reception sensitivityOscillations generatorsTransmissionFrequency spectrumObject based
A transmitting unit emits a short pulse wave which satisfies a predetermined spectrum mask from an antenna into space. A receiving unit receives a reflected wave produced by an object existing in space of the short pulse wave emitted by the transmitting unit. A signal processing unit analyzes the object based on an output signal from the receiving unit. The transmitting unit has a pulse generator which outputs pulse signals each having a predetermined width at a predetermined frequency, and a burst oscillator which receives the pulse signal output from the pulse generator and performs an oscillation operation for time corresponding to the width of the pulse signal to output the short pulse signal. A width and a cycle of the pulse signal and an oscillation frequency of the burst oscillator are set such that almost an entire main lobe of a spectrum of the short pulse wave falls within a range of 24.0 to 29.0 GHz in the predetermined spectrum mask, and that a radiation power density to an RR radiowave emission prohibited band held by the predetermined spectrum mask is lower than a peak radiation power density of the main lobe by not less than 20 dB.
Owner:ANRITSU CORP
Method for calculating radiation power density of antenna of mobile communication base station
ActiveCN104237651AImprove accuracyAccurate Final Gain ValueAntenna radiation diagramsVertical planeElectromagnetic radiation
The invention discloses a method for calculating the radiation power density of an antenna of a mobile communication base station. The method comprises the steps that a horizontal plane normalization directivity function and a vertical plane normalization directivity function are established, a measuring point away from a vertical plane by the assigned distance is selected for the antenna, the fitting coefficient of the horizontal plane normalization directivity function of the antenna is obtained by obtaining the antenna radiation power data at the measuring point and performing fitting, the final gain value from the antenna of the mobile communication base station to an antenna panel is determined based on the antenna theoretical gain value of the mobile communication base station, a computing model for the radiation power density of the antenna of the base station is established according to the fitting coefficient of the horizontal plane normalization directivity function of the antenna and the finial gain value from the antenna to the antenna panel, and the antenna radiation power density suitable for any azimuth angle can be worked out. The method has the advantages of being high in accuracy and suitable for any azimuth angle.
Owner:STATE GRID CORP OF CHINA +2
Method for measuring electromagnetic radiation pattern and gain of radiator using term waveguide
InactiveUS7336230B2Transmitters monitoringResistance/reactance/impedenceElectromagnetic radiationWaveguide
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse electric and magnetic (TEM) waveguide by changing arrangements of the radiator located within the TEM waveguide; and b) estimating a radiation power density of the radiator in free space, wherein the radiator is modeled as a dipole moment based on the powers of the output port of the TEM waveguide.
Owner:ELECTRONICS & TELECOMM RES INST
Method for measuring electromagnetic radiation pattern and gain of radiator using tem waveguide
InactiveUS20070126427A1Transmitters monitoringResistance/reactance/impedenceElectromagnetic radiationWaveguide
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse electric and magnetic (TEM) waveguide by changing arrangements of the radiator located within the TEM waveguide; and b) estimating a radiation power density of the radiator in free space, wherein the radiator is modeled as a dipole moment based on the powers of the output port of the TEM waveguide.
Owner:ELECTRONICS & TELECOMM RES INST
TOF distance measuring system and movable platform
ActiveCN107076853AImprove signal-to-noise ratioImprove rangeElectromagnetic wave reradiationSignal-to-noise ratio (imaging)Signal processing
The invention provides a TOF distance measuring system and a movable platform. The TOF distance measuring system comprises a light emitter, a receiver, a controller, and an optical system. The optical system comprises at least one of a first optical signal processing device and a second optical signal processing device. Optical signals emitted by the light emitter are processed by the first optical signal processing device, and then the radiation power density of the optical signals emitted by the light emitter is improved. The optical signals reflected by a target object are processed by the second optical signal processing device, and the intensities of the optical signals reflected by the target object are improved. The radiation power density of the optical signals emitted by the light emitter is improved, and / or the intensities of the optical signals reflected by the target object received by the receiver are improved, and the signal to noise ratio of the TOF distance measuring system is improved, and the target object far away from the TOF distance measuring system is detected by the TOF distance measuring system, and therefore the distance measuring range of the TOF distance measuring system is improved.
Owner:SZ DJI TECH CO LTD
Multi-frequency terahertz radiation source based on Dirac semi-metal transmission grating
The invention discloses a multi-frequency terahertz radiation source based on a Dirac semi-metal transmission grating. The multi-frequency terahertz radiation source comprises a transmission grating made of a Dirac semi-metal material, moving electrons sweep past the surface of the grating to excite two types of surface plasma wave modes in the grating, the dispersion characteristics and excitation conditions of the two modes are different, but the two modes can be converted into enhanced multi-frequency coherent terahertz radiation by grating diffraction, and the radiation power density is enhanced by surface plasma waves by two to three orders of magnitude. The multi-frequency terahertz radiation source can be used for development of the coherent terahertz radiation source with room temperature working, multiple frequencies and high power capable of covering the whole terahertz wave band.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Laser fire initiating explosive device optical window in double-self-focusing lens structure
InactiveCN102620613AGuaranteed Power DensityReduce randomnessBlastingMountingsOptical axisLaser power density
The invention relates to a laser fire initiating explosive device optical window in a double-self-focusing lens structure and belongs to the optical window design of laser fire initiating explosive devices. The optical window overcomes the technical defects of the traditional laser fire initiating explosive device optical window in the prior art, the reduction of the laser radiation power density can be avoided, the entrance of proportional reflecting light into a detection optical fiber can also be ensured, and the consistency of the reflectivity of each fire initiating explosive device is improved. The window comprises a laser device, an ignition optical fiber, a detector, a detection optical fiber, a first self-focusing lens and a second self-focusing lens, wherein the laser device is connected with the first self-focusing lens through the ignition optical fiber, the detector is connected with the first self-focusing lens through the detection optical fiber, the first self-focusing lens and the second self-focusing lens are in parallel arrangement, and in addition, optical axes are coaxial. The laser fire initiating explosive device optical window has the advantages that the ignition laser power density is kept, the ignition reliability margin is ensured, in addition, the reflectivity randomness of the optical window is effectively reduced, the quantitative detection of the reflecting light is favorably realized, and the validity of the continuous detection of the optical path is further improved.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Dual-frequency terahertz radiation source based on Dirac semi-metal surface plasmon wave
The invention discloses a dual-frequency terahertz radiation source based on a Dirac semi-metal surface plasmon wave. The dual-frequency terahertz radiation source comprises a dielectric substrate which is covered with a Dirac semi-metal film and has a buffer layer, and moving electrons sweep the surface of a film to excite surface plasmon waves of two modes. When the dielectric constant of the buffer layer is lower than the dielectric constant of the substrate, the two modes can be directly converted into coherent Cherenkov terahertz radiation in the substrate, the power density of the radiation is enhanced to two to three orders of magnitude by the surface plasmon waves, and the dual-frequency terahertz radiation source can be used to develop a dual-frequency coherent terahertz radiationsource with room temperature operation, high power and the coverage of an entire terahertz frequency band.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Device and method for enhancing read-write capacity of RFID tag and intelligent checking device
InactiveCN108427896AImprove read and write performanceEasy to read and writeAntenna supports/mountingsSensing by electromagnetic radiationIncident waveField intensity
The invention relates to a device and method for enhancing the read-write capacity of an RFID tag and an intelligent checking device. The problem that an existing RFID tag is poor in read-write capability is solved. The device enhancing the read-write capacity of the RFID tag comprises at least one RFID reader-writer antenna and at least one RFID read-written tag which are arranged between two mutually parallel reflection plates respectively; the radiation beam direction of the RFID reader-writer antenna is perpendicular to any reflection plate, and the RFID read-written tag is not close to the RFID reader-writer antenna or any reflection plate. The device has the advantages that total reflection is approximatively formed because radiation waves of the read-write antenna are approximatively perpendicular to a metal conductor plate; reflection waves and incident waves are superposed in the forward direction to achieve the enhancing effect, the electromagnetic wave radiation power density is multiplied, the field intensity difference is small, and therefore the tag is easy to read and write; batch dense tags which are close to one another are also successful and fast read and written, and the stability of system acquisition data is improved.
Owner:李卫星
Optical window based on double-self-focusing lens structure
InactiveCN110411283AEffective protectionReduce randomnessBlasting cartridgesFiberPhotovoltaic detectors
The invention belongs to the field of laser initiating explosive devices, and particularly relates to an optical window based on a double-self-focusing lens structure. The optical window comprises anignition laser, a detection laser, an optical switch, a photoelectric detector, a first self-focusing lens, a second self-focusing lens and a sapphire transparent window, wherein the ignition laser isconnected to the optical switch through an ignition input fiber and a detection input fiber correspondingly, the optical switch is connected with the first self-focusing lens through the ignition optical fiber, the photoelectric detector is connected with the first self-focusing lens through the detection optical fiber, the second self-focusing lens and the sapphire transparent window are sequentially placed behind the first self-focusing lens, and optical axes of the first self-focusing lens, the second self-focusing lens and the sapphire transparent window are coaxial. According to the optical window, the technical defects of an existing laser initiating explosive device optical window are overcome, the laser radiation power density is avoided, a certain proportion of detection light isguaranteed to enter the detection optical fiber, the consistency of the reflectivity of the initiating explosive devices is improved, and the capability of the chamber pressure resistance of the optical window is improved.
Owner:NANJING UNIV OF SCI & TECH
Residual passive intermodulation test method
ActiveCN105897348AGuaranteed passive intermodulation indexGuarantee authenticityElectrical testingTransmission monitoringTest requirementsRadiation power density
The present invention provides a residual passive intermodulation test method. The residual passive intermodulation test method comprises: performing self calibration of the system for testing so as to satisfy a presetting test requirement; scanning the background in a testing place so as to check and remove other interferences; performing calibration of the radiation power density of the system for testing according to the max radiation power density of the position where a satellite to be measured is located so as to allow the radiation power density of the system for testing to reach the level of the max radiation power density; and sampling and obtaining the max radiation power density of the satellite to be measured at different positions relative to the different positions in the testing field, and correspondingly obtaining different radiation power densities of the system for testing so as to obtain relatively stable radiation power density reading. According to the invention, an appropriate wireless test system is built and is calibrated so as to ensure that the passive intermodulation index of the satellite test environment reaches the requirement of the satellite passive intermodulation test, and therefore, the test result authenticity is ensured and the test error influence is decreased.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
Cerenkov terahertz radiation source based on multilayer graphene surface plasma wave
InactiveCN109830875APower Boost and TuningSolid masersOptical elementsTerahertz radiationSurface plasmon
The invention discloses a Cerenkov terahertz radiation source based on a multilayer graphene surface plasma wave. The Cerenkov terahertz radiation source comprises multilayer graphene covering a substrate having a buffer layer. The multilayer graphene surface plasma wave energy can be increased by reducing the dielectric constant of the buffer layer and increasing the number of graphene layers. When the dielectric constant of the buffer layer is less than the dielectric constant of the substrate, the surface plasma wave excited by moving electrons can be directly converted into coherent Cherenkov terahertz radiation in the dielectric substrate without wave vector compensation. The radiation power density is increased by the surface plasma waves by two to three orders of magnitude. The Cerenkov terahertz radiation source can be used for developing a coherent high-power radiation source working at room temperature and covering the whole terahertz band.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Method and device for judging whether electromagnetic radiation of base station exceeds standard
InactiveCN105246093AAvoid investmentGet Radiant Power DensityWireless communicationElectromagnetic radiationLow frequency
The embodiment of the invention provides a method and device for judging whether the electromagnetic radiation of a base station exceeds standard, and relates to the field of communications, wherein the base station is classified according to frequency, and then according to the category of the base station, a reasonable radiation power density limiting value is determined. The method adopted by the embodiment of the invention comprises the steps: obtaining the frequency of the base station, and determining the category of the frequency of the base station, wherein the category of the frequency comprises high frequency category and low frequency category; determining a radiation power density limiting value corresponding to the base station according to the category of the frequency of the base station; judging whether the electromagnetic radiation of the base station exceeds standard according to the radiation power density limiting value.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD +1
Visual simulation prediction method for electromagnetic radiation of base station based on simplified directivity function
ActiveCN111355545AHigh electromagnetic radiation intensityHigh reference valueTransmission monitoringComputational physicsElectromagnetic radiation
The invention discloses a visual simulation prediction method for electromagnetic radiation of a base station based on a simplified directivity function. Through mathematically simplifying an antennadirectivity attenuation function, practical simplified calculation of any spatial point is realized; each equivalent position curve of the antenna space limit value is predicted to realize predictionof a single-antenna three-dimensional visual contour surface; meanwhile, prediction of a space electromagnetic radiation power density visualization curve in the vertical direction and prediction of aground 1.7 m high electromagnetic radiation power density visualization curve are achieved. Through open design and conventional multi-parameter adjustment, the established prediction model can accurately calculate and visualize the maximum electromagnetic radiation intensity of a certain position of a single base station, has great reference value for rapid site selection of the base station, electromagnetic radiation environment influence visualization evaluation and environment protection visualization, and has certain social benefits.
Owner:福建省厦门环境监测中心站
Cerenkov terahertz radiation source based on cylinder graphene surface plasma wave
InactiveCN109873287APower Boost and TuningSolid masersNon-linear opticsDielectricTerahertz radiation
The invention discloses a Cerenkov terahertz radiation source based on cylinder graphene surface plasma wave. The Cerenkov terahertz radiation source completely covers a graphene ribbon of a cylindrical dielectric rod, the cylindrical graphene dielectric rod structure has the 2pai periodicity in a circumference direction, so that the surface plasma wave chromatic dispersion can penetrate through the medium light speed line, the surface plasma wave can be matched with the transmission wave vector in the dielectric, so that the surface plasma wave motivated by the annular electron can be directly converted into the coherent Cerenkov terahertz radiation in the dielectric rod without using the wave vector compensation; the radiation power density is enhanced to two to three order of magnitudeby the surface plasma wave. The Cerenkov terahertz radiation source can be used for developing the radiation source which works at room temperature, has coherence and high power and is capable of covering the whole terahertz waveband.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Method for prolonging service life of roller
InactiveCN105274517AExtended service lifeReduce consumptionRollsMetallic material coating processesMulliteAlloy
The invention discloses a method for prolonging the service life of a roller. Alloy powder is sprayed to surface alloy of the turned roller, the alloy powder is melted and combined with a roller base body, and a series of laser heating and fusion alloying points are formed. The alloy powder comprises Cr, Si, Mi, W, mullite and rutile. Under the condition that the laser radiation power density is 104-105 W / cm<2>, heating is carried out, and then quick cooling is carried out at the speed of 103-105 DEG C / s. According to the method, by improving the surface quality and the hardness of the roller, the service life of the roller is prolonged. Thus, roller consumption is greatly reduced, the operating rate of a rolling mill is increased, the workloads for replacing the roller on site are reduced for workers, production cost are reduced for enterprises, and good economic benefits and social benefits can be created.
Owner:INNER MONGOLIA BAOTOU STEEL UNION
Semiconductor laser therapeutic machine for medical cosmetology
InactiveCN113368406AHigh radiation power densityAvoid burnsLight therapyLiquid storage tankEngineering
The invention discloses a semiconductor laser therapeutic machine for medical cosmetology, belongs to the field of semiconductor laser therapeutic machines. When the semiconductor laser therapeutic machine body emits laser and passes through filter, the diffusion sphere and light diffusion particles can promote the diffusion of laser, so that the treatment is more comprehensive, and meanwhile, the laser radiation power density is relatively large, when the temperature is too high, the two deformation memory springs deform and extend oppositely, a first magnet blocks repel a second magnet blocks to move in a liquid storage tank in the extending process, carbon dioxide gas overflows, the carbon dioxide gas has a heat absorption effect, the two deformation memory springs extend oppositely to drive the two extrusion plates to move oppositely to extrude carbon dioxide gas, so that the carbon dioxide gas carrying heat is guided into a gas guide pipe, and meanwhile, the two extrusion plates pull two drawing plates to move oppositely to extract the carbon dioxide gas into a heat conduction cylinder and cooperate with a heat conduction semi-bag and heat conduction fluid to conduct the heat out, so that the skin is prevented from being burnt.
Owner:淮安意德健康管理有限公司
Spectrograph
InactiveCN105277281AAvoid discomfortAppropriately control the frequency of useCorrelation spectrometryOptical radiationUltraviolet lights
The invention provides a spectrograph which is used for analyzing to-be-detected light. The spectrograph comprises a light splitting unit, a light detector, and a processing unit. The light splitting unit enables components with different wavelengths of the to-be-detected light to be decomposed. The light detector detects the decomposed to-be-detected light, so as obtain a spectrum. The processing unit is electrically connected to the light detector, and is used for calculating the proportion of light radiation quantity of the spectrum at a specified band to at least one of the total optical radiation power density, the total optical radiation power intensity and the total optical radiation quantity of the spectrum, wherein the specified band is within visible light from infrared light to ultraviolet light, and invisible light.
Owner:UNITED POWER RES TECH CORP +1
Radiation source capable of dynamically tuning radiation parameters and radiation parameter tuning method
ActiveCN113156738AEnhanced Radiation Power DensityReduce processing difficultyNon-linear opticsGratingLine width
The invention discloses a radiation source capable of dynamically tuning radiation parameters and a radiation parameter tuning method. The radiation source comprises a dielectric substrate, a waveguide and an electrode array are arranged on the dielectric substrate, a plurality of graphene strips are arranged on the waveguide, a gap is formed between every two adjacent graphene strips, and the electrode array is used for adjusting the bias voltage of each graphene strip so as to dynamically tune the radiation parameter of the radiation source under the condition that the radiation frequency is not changed. The metasurface structure formed by the graphene strip is adopted, a waveguide mode is radiated into the space, and on the basis that the grating structure is formed, under the condition that the radiation frequency is not changed, radiation parameters such as the line width and the grating period are actively and dynamically tuned by changing the bias voltage on the graphene strip; in addition, the line width can be tuned in a wider range and can be narrowed to 1 * 10 <-8 > times of the radiation frequency to the minimum, and the radiation power density is remarkably enhanced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Online monitoring instrument
InactiveCN102590133AImprove monitoring accuracyLower resistanceColor/spectral properties measurementsBlack-body radiationClosed loop
The invention relates to an online monitoring instrument, which is used for the online monitoring of air quality, and comprises an infrared light source. The infrared light source comprises a silicon-carbon rod, wherein the silicon-carbon rod comprises two electrodes, and the two electrodes are used for the silicon-carbon rod to access a closed loop of a power supply. The silicon-carbon rod is used as a radiation light source, the silicon-carbon rod has a small resistance value; and the silicon-carbon rod has a function similar to the blackbody radiation under the electrified normal working situation, and the radiation power density is large, so the monitoring precision of the online monitoring instrument can be improved. At the same time, raw materials for producing the online monitoring instrument are inexpensive and are simple to process and mold, so the cost is low, and the online monitoring instrument is easy to popularize.
Owner:内蒙古赛宝伦科技有限公司
tof ranging system and mobile platform
ActiveCN107076853BImprove signal-to-noise ratioImprove rangeElectromagnetic wave reradiationEngineeringLight signal
An embodiment of the present invention provides a TOF ranging system and a movable platform. The TOF ranging system includes: a light emitter, a receiver, a controller, and an optical system. The optical system includes a first optical signal processing device and a second optical signal processing device. At least one of the devices; the optical signal emitted by the light emitter passes through the first optical signal processing device to improve the radiation power density of the optical signal emitted by the light emitter; the optical signal reflected by the target object passes through the second optical signal processing device to improve the receiving The intensity of the light signal reflected by the target object received by the detector. The embodiments of the present invention can improve the signal-to-noise ratio of the TOF ranging system by increasing the radiation power density of the optical signal emitted by the light emitter, and / or increasing the intensity of the optical signal reflected by the target object received by the receiver, so that the TOF ranging system Target objects that are far away from the TOF ranging system can be detected, thereby improving the ranging range of the TOF ranging system.
Owner:SZ DJI TECH CO LTD
Rectenna array division method
ActiveCN106919787BImprove synchronicityImprove rectification efficiencyInformaticsSpecial data processing applicationsPower parameterFeature parameter
The invention discloses a sub-array dividing method of a rectification antenna array. The method comprises steps of inputting rectification antenna array feature parameters, rectification channel efficiency parameters, radiation power parameters and sub-array dividing type parameters, acquiring a radiation power density curve, acquiring a rectification channel efficiency curve, acquiring a sub-array rectification efficiency expression formula, building a target function according to the sub-array rectification efficiency, conducting even sub-array division to the rectification antenna array, selecting an optimized design variable according to the sub-array dividing type, acquiring a constraint function according to the sub-array dividing type, building a rectification antenna array sub-array dividing optimization module, solving a rectification antenna array sub-array dividing optimization module, outputting a sub-array dividing scheme, and acquiring each sub-array module unit number of the sub-array dividing scheme. With rectification efficiency as the target, sub-arrays of the rectification antenna array is divided; and maximum of the whole rectification efficiency of the rectification antenna array can be achieved.
Owner:XIDIAN UNIV
Calculation Method of Radiated Power Density of Mobile Communication Base Station Antenna
ActiveCN104237651BImprove accuracyAccurate Final Gain ValueAntenna radiation diagramsVertical planeElectromagnetic radiation
The invention discloses a method for calculating the radiation power density of an antenna of a mobile communication base station. The method comprises the steps that a horizontal plane normalization directivity function and a vertical plane normalization directivity function are established, a measuring point away from a vertical plane by the assigned distance is selected for the antenna, the fitting coefficient of the horizontal plane normalization directivity function of the antenna is obtained by obtaining the antenna radiation power data at the measuring point and performing fitting, the final gain value from the antenna of the mobile communication base station to an antenna panel is determined based on the antenna theoretical gain value of the mobile communication base station, a computing model for the radiation power density of the antenna of the base station is established according to the fitting coefficient of the horizontal plane normalization directivity function of the antenna and the finial gain value from the antenna to the antenna panel, and the antenna radiation power density suitable for any azimuth angle can be worked out. The method has the advantages of being high in accuracy and suitable for any azimuth angle.
Owner:STATE GRID CORP OF CHINA +2
Online monitoring instrument
InactiveCN102590133BImprove monitoring accuracyLower resistanceColor/spectral properties measurementsBlack-body radiationClosed loop
The invention relates to an online monitoring instrument, which is used for the online monitoring of air quality, and comprises an infrared light source. The infrared light source comprises a silicon-carbon rod, wherein the silicon-carbon rod comprises two electrodes, and the two electrodes are used for the silicon-carbon rod to access a closed loop of a power supply. The silicon-carbon rod is used as a radiation light source, the silicon-carbon rod has a small resistance value; and the silicon-carbon rod has a function similar to the blackbody radiation under the electrified normal working situation, and the radiation power density is large, so the monitoring precision of the online monitoring instrument can be improved. At the same time, raw materials for producing the online monitoring instrument are inexpensive and are simple to process and mold, so the cost is low, and the online monitoring instrument is easy to popularize.
Owner:内蒙古赛宝伦科技有限公司
Method for measuring light-beam central position by array CCD
InactiveCN1333231CHigh detection sensitivityImprove accuracyUsing optical meansLight spotEngineering
A method of using linear array CCD to measure central position of light beam includes presenting radiation power density of CCD surface light spot in Gaussian or quasi-Gaussian distribution , setting error limit and selecting end-off threshold of digital signal output by CCD and relative circuits , applying weighted- regression method to calculate out estimation value of central position for effective digital signal of end-off quasi-Gaussian distribution and using Monte Carlo figure to simulate error distribution for setting out width range of light beam .
Owner:TSINGHUA UNIV
A kind of method for extracting total flavonoids of Auranthus nudica
Owner:JIANGXI POZIN PHARMA
Sub-array dividing method of rectification antenna array
ActiveCN106919787AImprove synchronicityImprove rectification efficiencyInformaticsSpecial data processing applicationsPower parameterFeature parameter
The invention discloses a sub-array dividing method of a rectification antenna array. The method comprises steps of inputting rectification antenna array feature parameters, rectification channel efficiency parameters, radiation power parameters and sub-array dividing type parameters, acquiring a radiation power density curve, acquiring a rectification channel efficiency curve, acquiring a sub-array rectification efficiency expression formula, building a target function according to the sub-array rectification efficiency, conducting even sub-array division to the rectification antenna array, selecting an optimized design variable according to the sub-array dividing type, acquiring a constraint function according to the sub-array dividing type, building a rectification antenna array sub-array dividing optimization module, solving a rectification antenna array sub-array dividing optimization module, outputting a sub-array dividing scheme, and acquiring each sub-array module unit number of the sub-array dividing scheme. With rectification efficiency as the target, sub-arrays of the rectification antenna array is divided; and maximum of the whole rectification efficiency of the rectification antenna array can be achieved.
Owner:XIDIAN UNIV
Mobile telephone with protection device against radiations generated while it is used
InactiveCN1133310CAntenna supports/mountingsAntenna adaptation in movable bodiesMobile phoneTransmitter
The present invention relates to a mobile telephone with protection device against radiations generated while it is used. It is divided into two groups: a first radiation receiver-emitter group (6), consisting of the receiver, the emitter, the antenna (2) and a telescopically extendable support rod for the user, and a second personal communication group (7), consisting of the speaker (3); the microphone (4); the keypad (12); the screen (17); and the said casing (5), both of the groups being connected one another via cable or wirelessly. During communication, the radiation receiver-transmitter group (6) is distanced from the personal communication group (7), so that the power density of the radiation energy that reaches the personal communication group, and therefore the user, van be less than 0.1 microW / cm<2>. In the absence of communication, the emitter group can be inserted in a snug manner in a housing provided for that purpose in the casing. It can be used either in individual or collective usages.
Owner:CONSULTING COMUNICACIO I DISSENY
Visual Simulation Prediction Method of Base Station Electromagnetic Radiation Based on Simplified Directional Function
ActiveCN111355545BHigh electromagnetic radiation intensityHigh reference valueTransmission monitoringComputational physicsElectromagnetic radiation
The invention discloses a base station electromagnetic radiation visualization simulation prediction method based on a simplified directional function, the steps of which are as follows: through mathematical simplification of the antenna directional attenuation function, the practical simplified calculation of any point in space is realized; each equivalent position curve of the antenna space limit is predicted, Realize the prediction of the three-dimensional visualization isosurface of a single antenna; at the same time, realize the prediction of the visualization curve of the space electromagnetic radiation power density in the vertical direction, and the prediction of the visualization curve of the 1.7m high electromagnetic radiation power density on the ground. Through the open design and conventional multi-parameter adjustment, the prediction model established by the present invention can accurately calculate and visualize the maximum electromagnetic radiation intensity at a certain position of a single base station, which is useful for rapid site selection of base stations, visual evaluation of electromagnetic radiation environmental impact, and visualization of environmental protection. Great reference value, with certain social benefits.
Owner:福建省厦门环境监测中心站
Residual passive intermodulation test method
ActiveCN105897348BGuaranteed passive intermodulation indexGuarantee authenticityElectrical testingTransmission monitoringTest requirementsRadiation power density
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
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