1490 results about "High radiation" patented technology

A multiple mode feed horn is provided for transmitting and receiving signals. The feed horn includes a transverse electric throat section, a transverse electric profile section, and a transverse electric aperture section. The transverse electric profile section propagates a first transverse electric (TE) mode. The transverse electric aperture section propagates a second TE mode. The multiple mode feed horn prevents propagation of traverse magnetic modes from said throat section to said aperture section.

A system and method are described in which space-time coding techniques are used to transmit and receive multiple data streams within a near vertical incidence skywave (“NVIS”) communication system. Within the NVIS communication system, multiple independent data streams may be transmitted from a transmitting station at a high radiation angle, approaching or reaching 90 degrees. The data streams are reflected off of the ionosphere of the earth and received by one or more receiving stations. In one embodiment, the space-time coding techniques are multiple-input multiple-output (“MIMO”) signal communication techniques.

The invention relates to a D trigger used for single particle upsetting resistance and single particle transient pulse in the technical filed of an integrated circuit, comprising two multichannel switches, two delay circuits, two protecting gate circuits and three inverters; wherein, the multichannel switches are used for forming a feedback loop for latching data; the delay circuits are used for generating signals in delay modes; the protecting gate circuits are used for filtering voltage transient fluctuation of the input signals; in the feedback loop of the D trigger, data input signal D and the delayed mode thereof enter the protecting gate circuit; and the output signals of the protecting gate circuit filter the delayed voltage transient fluctuation of the data input signal D and the width of the voltage transient fluctuation is not wider than the delay of the delay circuit. The invention can be applied to application occasions needing higher radiation resistance, leads the single particle upsetting resistance and single particle transient pulse performance of D trigger to reach the same level as a time sampling D trigger; and simultaneously, the increasing of the unit area is less than that of the time sampling D trigger and the working speed is superior to that of the time sampling D trigger.

A radome (202) includes a dome wall (208) formed from a dielectric material wherein at least a portion of the dielectric material includes a plurality of magnetic particles (206). Radomes according to the invention can form dome walls of variable thickness, yet still have high radiation efficiency across a wide frequency band. Magnetic radomes utilize dielectrics including magnetic particles (206) to match the impedances between medium boundaries, such as an air to dome boundary.

The invention provides a graphene radiation material, which comprises more than one layer of graphene radiation film. Each graphene radiation film comprises a support layer, a graphene layer and a bonding layer, which are combined with one another, wherein the graphene layer is positioned between the support layer and the bonding layer, and comprises more than one layer of graphene or graphene composite material with a mono-molecule thickness. The invention also provides a preparation method for the graphene radiation material and the use of the graphene radiation material. The material has a high heat-conducting property; and by the material, the radiation effect of an electronic product can be improved, the temperature of the electronic product can be reduced, the use comfort of a user can be improved, the reliability of the electronic product can be improved, and the service life of the electronic product can be prolonged. The graphene radiation films have remarkable cooling effects; and moreover, an industrial preparation method can be adopted, so that cost is greatly decreased, and automatic production is realized. The graphene radiation material can be widely applied to equipment such as smart phones, tablet personal computers, notebooks and the like with small spaces and high radiation requirements.

A basic form of a variable capacitive apparatus and its actuating method are disclosed. The apparatus is a simple two-terminal structure and may be set by short duration, low voltage electrical pulses. Materials with perovskite structure or perovskite-related structures, especially colossal magnetoresistive materials, are the active constituents of the apparatus. The apparatus overcomes the shortcomings of its predecessors and offers the advantages of non-volatility, two or multi-level storage, non-destructive reading, free-of-power maintenance and potential high radiation hardness.

The invention provides a fluorine-18-marked pyridazinone analogue. The general structural formula of the analogue is shown as a formula (A), wherein G is selected from S, O or NH; R1 is alkyl with 1-6 carbon atoms; R2 is halogen or halogenation alkyl; L is phenyl, cyclohexyl or a hexa-heterocycle radical containing heteroatoms; m is 1, 2, 3, 4, 5 or 6; n is an integer of 1-15; and M is methylene or ethoxy. A compound marking method is simple, and has high radiation chemistry yield, high stability, a high myocardium initial uptake value, high target to non-target ratio and low using cost. The pyridazinone analogue is applied to the technical fields of radiopharmaceutical chemistry and clinical nuclear medicine as a novel fluorine-18-marked myocardial perfusion developing agent.

The invention relates to a method for preparing a radiating coating of a light-emitting diode (LED) lamp. The radiating coating is prepared from the following components in percentage by weight: 30 to 60 percent of water-base resin, 20 percent of low-molecular polyamide, 10 to 20 percent of carbon nano tube, 1 to 5 percent of silicane coupling agent KH550, 5 to 40 percent of aluminum powder, 10 percent of rare-earth element oxide, 13 percent of silicon nitride, 15 to 20 percent of acetone, 1 to 2 percent of curing agent, 2 to 5 percent of mixture of dust preventive and smoothing agent and 3 to 5 percent of phenol. The radiating coating has high-radiation cooling performance, is used for reducing the surface temperature of a radiating cup, an aluminum substrate, a lampshade and the like in the LED lamp, and has excellent protective and decorative functions; due to the addition of a nano material unit, the contact area of a radiating device and the outside is increased, and a radiating effect is improved obviously; and due to the addition of the rare-earth element oxide, the activity of the radiating coating composition can be improved, and the radiating coating is also an optimal material for doping and stabilizing a coating structure.

A panel-form loudspeaker has a resonant multi-mode radiator panel which is excited at frequencies above the fundamental frequency and the coincidence frequency of the panel to provide high radiation efficiency through multi-modal motions within the panel, in contrast to the pistonic motions required of conventional loudspeakers. The radiator panel is skinned composite with a honeycomb or similar core and must be such that it has a ratio of bending stiffness to the third power of panel mass per unit area (in mks units) of at least 10 and preferably at least 100. An aluminum skinned, aluminum honeycomb cored composite can meet this more severe criterion easily.

The invention discloses a polarized reconfigurable magneto-electric dipole antenna, comprising a square upper PCB board, a square lower PCB board, a feed port and four antenna units. The four antenna units are arranged on the diagonals of the upper PCB board in a central symmetry mode. The lower PCB board comprises a square substrate integrated waveguide resonant cavity and a coupling slot. An inner conductor of the feed port is connected with patches on the upper surface of the lower PCB board. An outer conductor is connected with the patches on the lower surface of the lower PCB board. The polarized reconfigurable magneto-electric dipole antenna provided by the invention has the advantages of simple structure, low loss, wide bandwidth, high gain, high radiation efficiency and convenient switch among three polarized states. The polarized reconfigurable magneto-electric dipole antenna is very applicable to a modern wireless communication system, especially a 5G-band WiFi system.

[Object] To provide an antenna device which has a radiation pattern of wide angle, does not generate nulls in the vicinity of a front of an antenna, and has a high radiation efficiency.

[Organization] An array antenna device 1 having a plurality of radiation elements has: a dielectric substrate 2; two or more series array antennas 10, 20 which are formed on the dielectric substrate and to which the plurality of radiation elements 11 to 13, 21 to 23 are connected in series by conductor lines 15, 25; a distributor 30 formed in a layer different from a layer of the dielectric substrate where the series array antennas are formed, the distributor distributing power via capacitive coupling to the two or more series array antennas; and a phase adjuster (conductor lines 34 to 37) adjusting a phase of power distributed by the distributor.

At least one pair of hodoscope radiation monitors arranged to simultaneously monitor a target region that contains a source of radiation. The hodoscopes are preferably arranged so that their fields of view of the region are approximately orthogonal. The fields of view of the two detectors will overlap in a region that contains the source of radiation. Each of the two detectors will record radiation from the overlap region and, in addition, will record background radiation emanating from other regions within detector fields of view. The present invention provides statistical correlation techniques to estimate the extent to which unusually high radiation originates in the overlap region, irrespective of background in the field-of-view of individual hodoscope detectors. The source of radiation might be spontaneous, might be from an activation process, or might be scattered in from an external beam.

The invention relates to a miniaturization substrate integrated multi-beam antenna which comprises a metal copper-clad upper layer, a dielectric layer and a metal copper-clad lower layer which are sequentially laminated from top to bottom, wherein the metal-clad upper layer comprises a feed upper meter area, a multi-mode upper meter area and N groups of triangular upper meter areas which are sequentially arrayed from the input end to the radiation end; the multi-mode upper meter area is connected with the feed upper meter area; the N groups of triangular upper meter areas are connected with the multi-mode upper meter area; the metal copper-clad lower layer comprises a feed lower meter area, a multi-mode lower meter area and N groups of triangular lower meter areas; the feed lower meter area, the multi-mode lower meter area and the N groups of triangular lower meter areas are sequentially arrayed from the input end to the radiation end; the multi-mode lower meter area is connected with the feed lower meter area; the N groups of triangular lower meter areas are connected with the multi-mode lower meter area; and the dielectric layer is internally provided with N+1 rows of metallized through holes which penetrate through the feed upper meter area and the dielectric layer and are connected with the feed lower meter area as well as penetrate through the feed upper meter area and the dielectric layer and are connected with the multi-mode lower meter area. The invention has the benefit that a multi-beam antenna structure is compact, thus higher radiation efficiency is acquired.

A method is for operation of a counting radiation detector, in particular of a counting X-ray detector, with improved linearity, in which each detector element of the counting radiation detector supplies counting pulses at counting rates as a function of a number of radiation quanta which occur per unit time during operation. In the method, the counting rates which are supplied from each detector element or from subsections of the detector element are converted via a functional relationship to actual counting rates or are multiplied by correction factors which are dependent on the magnitude of the counting rates. The correction factors are determined in advance for the respective detector element or for the subsections of it, and any discrepancy (which occurs as a result of a dead time of the detector element, for example) in the counting rates is corrected from the actual number of radiation quanta which arrive per unit time. The method allows the linearity of counting radiation detectors to be improved, particularly at high radiation intensities, so that the linearity condition for X-ray CT systems is also satisfied.

The invention discloses a high-radiation heat-insulated coating which comprises the following components in parts by weight: 25-37 parts of infrared reflection pigments, 12-20 parts of aluminum-coated hollow microspheres, 15-28 parts of aerogel, 30-55 parts of organic resin, 0.1-0.2 part of a wetter, 0.36-0.47 part of a dispersant, 0.3-0.9 part of a defoamer, 0.02-0.1 part of a preservative, 0.02-0.1 part of a mildew preventive, 0.52-1.12 parts of a thickener, 1.2-2.4 parts of a film-forming aid and 0.03-0.18 part of a pH value regulator. The coating is provided with a plurality of photo-thermal reflection layers and heat-insulated barriers, has a good heat-insulated effect capable of reaching more than 98%, and is excellent in mechanical performance, large in adhesive force, good in weather resistance, water resistance, stain resistance, scrub resistance and the like, safe, environment-friendly and wide in application range.

The invention provides a Loop antenna system with gaps for radiation. The Loop antenna system comprises a metal frame. The two gaps are formed in the bottom edge of the metal frame. The interior of the metal frame is divided into a clearance zone and a main land portion. The clearance zone is located on the side, close to the gaps, in the metal frame and the main land portion is connected with the metal frame. The two ends of the portion, between the two gaps, of the metal frame are connected with a feed source and the main land portion respectively through antenna portions, so that a Loop antenna structural mode is formed and the antenna portions are located in the clearance zone. According to the Loop antenna system, the metal frame of a mobile terminal serves as a part of an antenna to be used in the radiation process. On one hand, radiation is conducted by the two gaps and the Loop antenna together so that the high-radiation antenna system can be formed and have the advantage that the bandwidth is increased; on the other hand, due to the facts that the two gaps are formed in the bottom edge and the Loop antenna is low in sensitivity, the Loop antenna system has the advantages of being low in sensitivity and high in signal strength.

The invention discloses an antenna control system and method of a phased array radar, and belongs to the technical fields of radio orientation, radio navigation, radio wave range finding or velocity measurement, positioning or existence detection via reflection or re-radiation of radio waves, and similar devices with other waves. The system comprises an antenna array module, an array plane selector switch module, a transmitting-receiving amplifier and filter module, a phase shifter and power divider module, a GPS/BD positioning module, an attitude sensor module, a control and power supply module and a wave beam oriented automatic control module. The system and method can satisfy the requirements of minimization, low power consumption, high radiation efficiency and high isolation degree. Compared with a traditional phased array configuration system, the number of RF transmitting-receiving channels is reduced to 1/5, the power consumption is reduced to 1/5 correspondingly, a switch linephase shifter is used, the phase delay within the work bandwidth satisfies the time delay characteristic of a signal space, and different frequency points are directed accurately; all machinery related equipment is omitted; and the total power consumption is reduced greatly.

This invention relates to device and methods for scrubbing configurable logic devices that are used in high-radiation environments.

The invention discloses a multi-ring-arranged double-integrated circuit (IC) chip packaging piece and a production method thereof. The multi-ring-arranged double-IC chip packaging piece comprises a multi-ring quad flat no (QFN) lead frame with a carrier, an internal pin, IC chips and a plastic package body. The production method comprises the following steps of: thinning; scribing; adding the chips primarily; performing pressure welding; inversely adding the chips secondarily; filling the bottom and solidifying; performing plastic packaging and post solidifying; printing; separating pins; electroplating; separating products; testing the products; packing; and warehousing. Compared with a single-row lead frame with the same area as the multi-ring QFN lead frame, the multi-ring QFN lead frame increases the pins by over 40 percent, so that the requirements of high density and multiple input/output (I/O) packages are met; the chips are inversely added, so that the packaging piece has a small number of short welding lines, a short heat conduction distance and high radiation capacity; through the inverse addition of the chips, the capacitance and the inductance between protruding points and the pins are far lower than those of the welding lines between a chip welding disc and the pins, so that the influence on high frequency application is reduced; and the thickness of a QFN can be reduced to be below 0.5mm, so that the intersection and the open circuit of the welding lines are avoided and testing qualified rate and testing reliability are improved.

A method of reducing a wave front aberration is provided for a lithographic process whereby the reducing is based on the selected pattern to be printed and the selected illumination mode used for exposure. Wave front aberrations of a projection system of a lithographic apparatus are measured and reduced by calculating adjustments of optical elements of the projection system and applying the calculated adjustments to the projection system. The calculation of adjustments is based on information on a spatial distribution of radiant intensity in a pupil of the projection system as present during exposing the radiation sensitive layer, and is limited to aberrations in projection lens pupil areas of relative high radiant flux.

The present invention generally relates to power generation methods and secondary processes requiring high radiant and emissivity homogeneous combustion to maximize production output. In one embodiment, the present invention relates to a top cycle power generator with combustion exhaust modified to have radiant flux in excess of 500 kW per square meter and emissivity greater than 0.90, and supercritical CO2 power generating cycle to maximize exergy efficiency.

The invention discloses an iris recognition optical imaging module for mobile terminal security identity authentication. The module comprises near-infrared LED lighting sources (1L and 1R), an optical imaging lens (5) with a fixed focus, a back-focus near-infrared optical filter (6), an imaging sensor (7) and a security chip (9), wherein the timing sequence of a short period T of the highest radiation intensity I generated by the near-infrared LED lighting sources (1L and 1R) is equal to the timing sequence of the period of global trigger exposure of the frame pixel of the imaging sensor (7), and the half-peak radiation or divergence angle FWHM of the near-infrared LED lighting sources (1L and 1R) is larger than or equal to the imaging field angle FOV of the optical imaging lens (5). The invention further provides a method of using the iris recognition optical imaging module which is used for a mobile terminal for security identity authentication.