10 results about "Radiation zone" patented technology

The application discloses a kind of vehicle-mounted UWB-AOA circular polarization high-precision positioning antenna, it is related to vehicle antenna positioning technical field.The vehicle-mounted UWB-AOA circular polarization high-precision positioning antenna includes: dielectric substrate and radiation layer, and the feed layer below radiation layer, and radiation layer is installed at substrate bottom, it is characterized in that, still include: the one end array of feed layer is close to radiation layer is installed with circular polarization antenna, and vehicle positioning is carried out based on circular polarization antenna, metal shielding layer for isolating external interference is arranged below feed layer, UWB transceiver module is installed below shielding layer, time stamp controller is installed in UWB transceiver module, the present application is positioned based on circular polarization antenna vehicle, to ensure the receiving stability of signal in complex environment, in turn, still can obtain stable and reliable three-dimensional positioning result under complex environment, and then guarantee the high-precision positioning demand of vehicle under dynamic operation condition.

The present disclosure belongs to the technical field of antennas. Provided are a panel antenna and an electronic device, which can solve the problems of existing panel antennas, such as low aperture efficiency, uneven radiation amplitude, difficulty in achieving multi-frequency coverage. The panel antenna in the present disclosure comprises a waveguide structure, a first dielectric substrate, a radiation layer and a plurality of switch units, wherein the radiation layer has a plurality of slit openings; the switch units are arranged so as to correspond to the slit openings on a one-to-one basis, and are configured to control whether the slit openings corresponding thereto are open / closed; the radiation layer is divided into a middle region and a peripheral region; and the slit openings located in the middle region among the plurality of slit openings are divided into a plurality of groups, each group of said slit openings comprises at least a plurality of first slit openings, at least some of the first slit openings located in different groups have different sizes, and the closer a group of slit openings to the centre of the middle region, the larger the size of the first slit openings in said group of slit openings. The panel antenna in the present disclosure has the advantages of high aperture efficiency, multi-frequency coverage and even radiation amplitude.

This invention relates to the field of glass curtain wall film technology, specifically to a glass curtain wall radiation cooling film and its preparation process. The cooling film has a layered structure, comprising, from the side closest to the glass substrate outwards: a self-healing adhesion layer for forming a high-strength, self-healing interface with the glass substrate; a photothermal response radiation modulation layer disposed on the self-healing adhesion layer for passively adjusting the emissivity of its infrared band according to ambient temperature; a gradient porous radiation layer disposed on the photothermal response radiation modulation layer for efficiently emitting infrared radiation in the 8-13μm band; and an environmentally friendly interface reinforcement layer disposed on the gradient porous radiation layer. This invention, through its self-healing adhesion layer, achieves, for the first time in the field of radiation cooling films, autonomous repair of interface damage, fundamentally solving the problem of debonding failure caused by stress fatigue in curtain wall applications and greatly extending its service life.

The present disclosure provides a flat plate antenna and electronic equipment, which belong to the technical field of antennas, and can solve the problems of low aperture utilization, uneven radiation amplitude and difficulty in realizing multi-frequency coverage of existing flat plate antennas. The flat plate antenna comprises a waveguide structure, a first dielectric substrate, a radiation layer and a plurality of switch units. The radiation layer has a plurality of slit openings. The switch units are arranged one by one corresponding to the slit openings and are configured to control the switch state of the corresponding slit openings. The radiation layer is divided into a middle region and a peripheral region. Part of the plurality of slit openings located in the middle region is divided into a plurality of groups. Each group of slit openings includes at least a plurality of first slit openings. The sizes of the first slit openings located in different groups are different, and the sizes of the first slit openings in the group closer to the center of the middle region are larger. The flat plate antenna has the advantages of high aperture utilization, multi-frequency coverage and uniform radiation amplitude.

The present invention relates to a heat transfer expansion plate processing and extraction system, and more specifically, by removing and extracting a heat transfer expansion plate installed inside the piping of the Reactor Coolant System (RCS) on the primary side of a nuclear power plant, the heat transfer expansion plate can be removed by remotely operating an electrical discharge machining (EDM) device and a gripper device installed on the equipment after installing equipment inside the reactor; by processing the heat transfer expansion plate remotely in a high-radiation zone, radiation exposure to workers can be reduced; by precisely processing the heat transfer expansion plate using an EDM device, damage inside the reactor can be prevented; by processing cutting grooves and cutting holes using an EDM device, processing time can be shortened and foreign materials generated during cutting can be minimized; by processing a gripper hole inside the heat transfer expansion plate and inserting a gripper, the heat transfer expansion plate can be stably grasped and pulled; and by processing the position of the gripper hole in the heat transfer expansion plate at a desired location, It has the effect of being able to adjust the gripper shape and overall size of the extraction device.

The present disclosure relates to an antenna arrangement with a radome. The antenna arrangement comprises a radiation layer (20), an antenna array element arranged in the radiation layer (20), the antenna array element comprising a plurality of antennas (24) distributed in a region having a region length and region width. The arrangement further comprises a radome (1) having a first main surface (1a) facing the radiation layer (20) and a second main surface (1b) arranged opposite of the first main surface (1a), wherein the second main surface (1b) is substantially flat, wherein the first main surface (1a) comprises at least one void space region (100), the at least one void space region (100) extending into the radome (1) towards the second main surface and comprises one or more void spaces and / or indentations acting as a lens, wherein the at least one void space region (100) has a maximum width (W1) that depends on an operational guided wavelength and a maximum length (L1 ) that depends on the length of the region of the antenna array element.

The present invention relates to the technical field of communications, and provides an antenna and an electronic device. The antenna in the present invention comprises a reflector plate and a radiation unit arranged on the reflector plate; the radiation unit comprises a plurality of dipoles, and the plurality of dipoles include a first dipole and at least one second dipole; the working frequency of the first dipole is less than the working frequency of the second dipole; each dipole comprises a radiation layer; the radiation layer comprises four radiation portions; the distance between the orthographic projection of the center of each radiation portion of the first dipole on the reflector plate and the orthographic projection of the center of the radiation layer of the second dipole on the reflector plate is a first distance; and a filter structure is provided on the radiation portion corresponding to the smallest first distance. By providing a filter structure on the radiation portion of the first dipole close to the second dipole, coupling between the first dipole and the second dipole is reduced, and interference with the first dipole, i.e., the low-frequency dipole, from the second dipole, i.e., the high-frequency dipole, is reduced, thereby effectively suppressing high-frequency signals.

This invention relates to a compact passive cooling and energy storage unidirectional cooling enclosure device, system, and method, belonging to the field of building energy conservation technology. The device comprises, from top to bottom, an integrated sky radiation layer, a gravity heat pipe heat transfer layer, and a phase change energy storage layer. The sky radiation layer is a high-reflectivity, high-emissivity composite coating used for passive radiative cooling; the gravity heat pipe layer incorporates a porous acrylic support structure and integrally formed heat dissipation fins, with a rectification ratio greater than 3, ensuring efficient unidirectional transfer of cooling energy only from the radiation layer to the energy storage layer; the phase change energy storage layer is encapsulated with paraffin wax with a phase change temperature of 20-30°C, used to store nighttime cooling energy and release it during the day. The advantages of this invention are: it can be directly embedded into the building roof, and through an adaptive working mode of "nighttime cooling storage, daytime cooling release, and winter insulation," it effectively solves the problems of insufficient daytime cooling energy in summer and excessive cold in winter associated with traditional radiative cooling materials, achieving year-round energy conservation without power.

The application belongs to the technical field of thermal radiation, and particularly relates to a radiation heat flow regulating device and application thereof. The radiation heat flow regulating device comprises at least two oppositely arranged radiation bodies, each of which comprises a radiation layer; at least one of the radiation bodies comprises a substrate and one or more organic polymer layers, wherein the organic polymer layer is arranged between the substrate and the radiation layer to reduce the radiation absorption of materials other than the radiation layer. The radiation spectrum mismatch between the organic polymer layer and the radiation layer can effectively reduce the heat energy absorbed by the substrate or other materials to establish an efficient heat radiation channel, which is beneficial to improving the thermal rectification ratio of the thermal rectifier and improving the output power and energy conversion efficiency of the thermal photovoltaic device. The radiation heat flow regulating device is prepared into a heat flow regulating device, such as a thermal diode, a thermal triode, a thermal photovoltaic device, a thermal switch, a thermal imager, a thermal lithography instrument and the like, which can effectively regulate the heat flow.