212 results about "Radiation frequency" patented technology

A locator including a communication interface adapted to communicate ticket data with a database, a memory adapted to store the ticket data received from the database, a first transmitter adapted to controllably radiate at least one radiation frequency, a receiver adapted to generate data corresponding to the transmitted radiation frequency, and a processor adapted to reconfigure ticket data based on the generated data, wherein the communication interface communicates the reconfigured ticket data to a network.

Exemplary embodiments of an apparatus are provided. For example, the exemplary apparatus can include at least one first arrangement providing at least one first electro-magnetic radiation to a sample, at least one second electro-magnetic radiation to a first reference and at least one third electro-magnetic radiation to a second reference. A frequency of radiation provided by the first arrangement generally varies over time. The exemplary apparatus may also include at least one second arrangement which is configured to detect a first interference between at least one fourth electro-magnetic radiation associated with the first electro-magnetic radiation and at least one fifth electro-magnetic radiation associated with the second radiation. The second arrangement is also configured to detect a second interference between at least one sixth electro-magnetic radiation associated with the first electro-magnetic radiation and at least one seventh electro-magnetic radiation associated with the third radiation.

A dynamically variable lens is made from actively tunable electromagnetic metamaterial cells. The lens operates on electromagnetic radiation including: radio frequency waves, microwaves, teraherz waves, near infrared waves, infrared waves and visible waves. The focal length of the lens is changed at a selected frequency. In the alternative, the frequency of radiation operated on is changed as a function of time. A third alternative provides precise control of the index of refraction of the lens. The index of refraction is varied progressively across the lens from one edge to the opposite edge causing the radiation to be directed at an angle.

A wireless communication device is provided with a multipart case, having electrical interfaces that encourage the flow of radiation frequency ground current between case sections. The multipart case has a first planar groundplane section and a second planar groundplane section. For example, the multipart case design may be a slider, double slider, multiple hinge, flip, or swivel case. The second planar groundplane is substantially coplanar with the first groundplane in a case open position, and substantially bi-planar with the first groundplane in a case closed position. The wireless device also includes an antenna located adjacent the second groundplane section first end. A first and a second interface electrically connect the first groundplane section to the second groundplane section second end (the end opposite the antenna).

Described herein is a method by which active millimeter wave radiation may be used to detect and identify the composition of concealed metallic, concealed non-metallic, concealed opaque or concealed semi-transparent materials based on their optical properties. By actively radiating a semi-transparent target anomaly with multiple millimeter wave radiation frequencies, the dielectric properties of the target anomaly can be identified. The dielectric properties of the target anomaly may then be compared to a library of dielectric properties attributed to semi-transparent materials of interest. This method will allow active millimeter wave radiation technology to identify the likely composition of targeted semi-transparent materials through absorption and illumination measurements attributed to the dielectric properties of the targeted composition.

The invention relates to a rapid emulsion breaking method, including microwave radiation. Emulsion breaker is added according to the water content of the rolly oil (calculated by weight percent), the mass ratio of the water and emulsion breaker is 1:0.5*10-4 to 5*10-4, and microwave is adopted for emulsion breaking. The emulsion breaker is one or more than two types of mixtures of polyamine polyoxy-propylene polyoxyethylene ether, resin polyoxy-propylene polyoxyethylene ether, higher-alcohol initiator emulsion breaker or propylene glvcol emulsion breaker. The microwave radiation and microwave radiation frequency are 2450MHz or 915MHz. Under the synergistic reaction, water-in-oil emulsion liquid is broken within a relatively short period, a bigger anhydration rate is achieved, and the emulsion-breaking efficiency is improved. In the circumstance of a little emulsion breaker, microwave radiation breaking method can be adopted, and the emulsion breaking speed is increased by 1-2 orders of magnitude compared with the traditional emulsion breaking by heating. The method is easy to implement, energy efficient, rapid in emulsion breaking, and the emulsion breaking effect is good.

The invention relates to a method for inversing soil moisture content from AMSR-E (Advanced Microwave Scanning Radiometer-EOS) data, which can be used for the remote sensing application departments of monitoring weather and environment, managing land, monitoring a drought and a crop growing situation, monitoring disasters, and the like. The method comprises the following four steps of: firstly, simulating the most part of situations on the earth surface and establishing a database by using a theoretical model; secondly, establishing an inverse algorithm by using a simulation database; thirdly, carrying out the inverse calculation of passive microwave data AMSR-E; and fourthly, carrying out proper evaluation, analysis and modification by using observation data of a meteorological department, thereby increasing the precision and the applicability of the algorithm. The method for inversing soil moisture content from the AMSR-E data can be used for the departments of forecasting weather, monitoring environment, agricultural situations and disaster situations, and the like. The microwave radiation frequency arrangement carried by a Fengyun 3 satellite of China is basically similar to the AMSR-E, and the invention can be applied to the Fengyun 3 satellite of China and a microwave radiometer transmitted by China in the future after being modified.

The invention discloses a domain wall-based nonlinear impulse autocorrelation measuring method and a measuring device in the field of optical impulse characteristic measurement. The method comprises the following steps of dividing a light beam to be measured into two beams, delaying one of the two beams, focusing the two beams of light on a domain wall of a periodically polarized nonlinear ferroelectric crystal to generate corresponding Cerenkov radiation frequency multiplication, ensuring that time domain overlapped sections of the two paths of Cerenkov radiation frequency multiplication generate autocorrelation signals, adjusting the delay of one of the light beams, and measuring a relation between the change of the autocorrelation signals and the change of the delay to obtain an autocorrelation curve so as to obtain the impulse time domain width of the light beam to be measured. By the method and the device, the nonlinear conversion efficiency is improved and the stronger autocorrelation signals are generated.

The invention discloses a zero-order resonant antenna of a compound transmission line based on left and right hands. The zero-order resonant antenna belongs to the technical field of antenna, and comprises a transmission feed line, a left-right hand compound transmission line and a medium base, wherein, the left-right hand compound transmission line is connected with the medium base, and the transmission feed line is connected with the left-right hand compound transmission line; the left-right hand compound transmission line comprises at least one transmission line elements connected in series; and the transmission line elements comprise a left hand transmission line capacitance and a right hand transmission line inductance connected in series, and a right hand transmission line capacitance and a left hand transmission line inductance connected in parallel. The thin metallic conductor sheet on the traditional micro-strip antenna is replaced for the left-right hand compound transmission line so that the invention realizes the micro-strip antenna with high radiant efficiency and low loss; meanwhile, the radiation frequency of the zero-order resonant antenna is unrelated to the physical size of the transmission line elements; therefore, the size of the resonance type micro-strip antenna is greatly reduced so as to realize miniaturization of the antenna and facilitate integration of a microwave monolithic integration receiver system.

Methods and apparatus for irradiating biological tissue by EM radiation having radiation frequency(ies) of at most 10 Gigahertz are disclosed herein. In some embodiments, the tissue is irradiated by passing converging EM waves (e.g. generated using an ellipsoidal mirror 110) through a surrogate medium having a specially shaped ENTRY_SURFACE via which the converging EM waves enter the surrogate medium. In some embodiments, a refractive index at a sub-10 Gigahertz of the surrogate medium is at least 2 or at least 3 or at least 5 and/or substantially matches a refractive index of an irradiated biological tissue. In some embodiments, converging EM waves are formed within the surrogate medium. Some embodiments relate to methods and apparatus for irradiating neuron(s), for example, to non-invasively stimulating or otherwise modify a behavior of neuron(s) using focused or non-focused EM radiation.

Methods and apparatus are provided for simultaneously spraying an ultraviolet (UV)-curable polymer-based coating and initiating a cure process. The apparatus includes a spray nozzle, at least one radiation emitter and a power source. The at least one radiation emitter is configured to emit UV radiation at a frequency corresponding to a radiation frequency for curing a UV-curable polymer of a coating composition. The at least one radiation emitter is associated with the spray nozzle and is aligned to direct UV radiation into a mist emitted from the spray nozzle, when in use. The power source supplies power to the at least one radiation emitter. The method permits irradiation of a mist of coating composition as it exits the spray nozzle thereby initiating the production of free radicals from a photo-initiator and commencing the cure process.

A Cerenkov radiation source of surface plasma waves belongs to the technical field of electromagnetic wave radiation sources, and comprises an electron gun, a medium material layer and a metallic film layer deposited on the surface of the medium material layer. Electron beams emitted by the electron gun skim over the surface of the metallic film layer to excite surface plasma waves on the surface of the metallic film layer, and the surface plasma waves penetrate the metallic film layer to reach the medium material layer; when the ratio Beta between the movement speed of the electron beams emitted by the electron gun and the light velocity in vacuum, and the refractive index n of the medium material layer satisfy the Cerenkov radiation condition that n Beta is larger than 1, the surface plasma waves are converted into Cerenkov radiation in the medium material layer; the radiation frequency is determined by the frequency of the surface plasma waves; and through changing the energy of moving electrons, the frequency of the excited surface plasma waves can be changed, so that the frequency of the electromagnetic radiation source can be tuned. The Cerenkov radiation source has the characteristics of miniaturization, narrow bandwidth, tunability, low voltage and easiness in integration.

The present invention provides an antenna structure. The antenna structure includes a metal housing, a first feeding portion, a first grounding portion and an inner radiator. The metal housing is provided with a coupling portion and a coupling section, the first feeding portion, the first grounding portion and the inner radiator are all arranged in the metal housing, when a current is fed in froma first feeding point, the current flows through the first feeding portion and the inner radiator, and is coupled to one of the coupling portion and the coupling section through the inner radiator, when the current is subjected to secondary coupling by one of the coupling portion and the coupling section to the other one of the coupling portion and the coupling section to commonly excite three different modes to generate three different radiation frequency bands. The antenna structure can effectively control low, middle and high frequencies of the radiation frequency bands and can meet the demands of Carrier Aggregation (CA). The present invention further provides a wireless communication device having the antenna structure.

The invention discloses a single feed line inner multiple frequency antennas; it adopts single feed line structure to receive and send multiple frequency signal. The antennas in the invention adopts the structure of plane piece and metal stripline to form the first, the second low frequency radiation frequency; high frequency resonance component is mounted in the Inner space of plane piece and metal stripline, by optimizing the structure and position, at the same time with forming the third radiation frequency, the first, the second resonance frequency are close with each other, so the bandwidth of antennas is extended efficiently. Because the effective usage of structure inner space is used to adjust and form the receiving and sending multiple frequency signals, the antennas can decrease the mobile telephone inner space; at each frequency point, the impedance speciality keeps identical, the feed circuit is simple, matching performance is well, cost is low.

A sound attenuating trim part, including at least one insulating area with an acoustic mass-spring characteristics having at least a mass layer and a decoupling layer adjacent to the mass layer, whereby the mass layer consists of a porous fibrous layer and a barrier layer, with the barrier layer being located between the porous fibrous layer and the decoupling layer and all layers are laminated together, and whereby the porous fibrous layer at least in the insulating area has adjusted dynamic Young's modulus (Pa) such that the radiation frequency of is at least 3000 (Hz).

The invention discloses an electro-optic intensity modulator chirp parameter testing method based on phase comparison. According to the method, a broadband high precision electro-optic modulator chirpparameter testing requirement can be satisfied, moreover, the problem of calibrating a photoelectric detector in a test is avoided, low frequency testing of electro-optic modulator chirp parameters is realized through utilization of a frequency shift heterodyne structure, and usage of a high frequency bandwidthphotoelectric detector is avoided. An optical carrier is input into the frequency shiftheterodyne structure and is divided into two. The optical carrier of an upper arm is modulated through utilization of a to-be-tested electro-optic modulator. The optical carrier of a lower arm is subjected to frequency shift andis modulated through an auxiliary phase modulator. Two ways of optical signals are beaten by the photoelectric detector and are converted into electric signals. The electric signals are filtered through utilization of a fixed electric filter to obtain the electric signal with a specific frequency. A time domain waveform of the electric signals is obtained through utilization of an oscilloscope. Through two times of adjustment of a bias voltage of the to-be-tested electro-optic intensity modulator, the phase difference of the electric signal with the specific frequency is observed, and the phase difference is computed to obtain chirp parameters of the electro-optic intensity modulator. A frequency of a radiation frequency signal loaded to the to-be-tested modulator is changed. The above-mentioned process is repeated, and the chirp parameters of the electro-optic intensity modulator at different modulation frequencies can be tested.

An electron radiation apparatus is provided. The electron radiation apparatus includes a beat-wave laser system generating a laser beat wave, an electron emitter emitting a density-modulated electron current induced by the laser beat wave, an electron accelerator accelerating the density-modulated electron current and generating a periodically bunched electron beam, and a radiation device receiving the periodically bunched electron beam and generating an electron radiation with a radiation frequency matched to one of the harmonics of the bunching frequency of the periodically bunched electron beam.

The invention provides an electromagnetic radiation source. An electronic gun is used to generate an annular electron beam. A first raster, which is close to one side of the electronic gun, makes the annular electron beam generated by the electronic gun generate a prebunch. A second raster, which is close to one side of a collector corresponding to the electronic gun, is used to make clustered electron groups generate coherent peculiar Smith-Purcell radiation, and a radiation frequency is 5-6 times of an electron group cluster frequency. The radiation frequency is in a Terahertz frequency range. An electromagnetic radiation intensity of the peculiar Smith-Purcell radiation is one to two orders of magnitudes higher than a common Smith-Purcell radiation intensity. Therefore, by using the radiation source of the invention, an electromagnetic wave of the Terahertz frequency range, which possesses a high radiation frequency and a high radiation intensity, can be generated.

The present invention discloses an antenna of an intelligent wrist wearing device and the intelligent wrist wearing device. According to the present invention, an antenna main body routing part and an antenna auxiliary routing part are respectively arranged on a first wrist band and a second wrist band of the intelligent wrist wearing device, by buckling a first metal buckle and a second metal buckle which are connected with the tail ends of the two wrist bands respectively, the antenna main body routing part and the antenna auxiliary routing part which are arranged on the two wrist bands are connected electrically, and the antenna main body routing part is connected with a signal source arranged inside the main body of the intelligent wrist wearing device via a coaxial line, thereby realizing the reconstruction of the antenna after a user wears the intelligent wrist wearing device and buckles the first and second metal buckles. By the reconstruction, the technical effect of improving the performance of the original antenna or expanding the radiation frequency band of the original antenna can be realized based on different implementation modes of increasing the radiation area of the original antenna, increasing the branches of the original antenna, increasing the independent reference ground of the antenna, etc., and the compatible design of the antennas, such as the FM antenna, the NFC antenna, the WPC antenna, etc., also can be realized.

A surface polaritons Cherenkov radiation source (SPCRS) belongs to an electromagnetic wave radiation source technology field. The radiation source comprises: an electron gun, a medium torus (or a medium cylinder) and a metal film layer deposited on an internal surface of the medium torus (or deposited on an external surface of the medium cylinder). An electron beam emitted from the electron gun is swept past from a metal film layer surface so as to excite a surface polaritons wave on the metal film layer surface. The surface polaritons wave penetrates the metal film layer and arrives at a medium material layer. When a ratio beta of a moving speed of the electron beam emitted by the electron gun to a light velocity in vacuum and a refractive index n of the medium material layer satisfy a Cerenkov radiation condition which is n beta>1, the surface polaritons wave is converted into the Cerenkov radiation in the medium material layer. A radiation frequency is determined by the frequency of the surface polaritons wave excited by the electron beam. Through changing moved electron energy, the frequency of the excited surface polaritons wave can be changed so as to tune the frequency of the electromagnetic radiation source. The radiation source of the invention has a small size, a narrow bandwidth and a low voltage, and is tunable and easy to be integrated.

The invention discloses an artificial structural material for electric control and regulation of radiation frequency and a manufacturing method of the artificial structural material. The manufacturing method comprises the following steps: (1) selecting central working frequency f, and further determining spacing intervals between units of the artificial structural material, as well as metal line width, metal type and electromagnetic nature of a substrate material of a metal structure constituting the units of the artificial structural material; (2) selecting a structure which is shaped like double letters E arranged opposite longitudinally as the metal structure, loading a capacitive diode, then computing by using electromagnetic simulation software CST (computer simulation technology), recording corresponding resonant frequency and drawing a resonant frequency-voltage curve; (3) periodically arranging the units of the artificial structural material in the H-plane direction of an antenna, and dividing the units of the artificial structural material into N regions arranged at equal spacing intervals, wherein N is not less than 10, each region comprises the same number of units, and the capacitance applied on the units in each region is equivalent. The artificial structural material disclosed by the invention adopts the metal structure which is shaped like the double letters E arranged opposite longitudinally to apply variable capacitance, so that the influence on electromagnetic property of the material when a conducting wire is externally applied is greatly reduced.