39results about How to "Improve Radiation Performance" patented technology

This application provides an electronic device, which includes a first device body and a second device body. The first device body has a folded state and an unfolded state relative to the second device body. The first device body includes a first frame and a first metal radiating plate. The first frame has a first antenna radiator and first slits located on both sides of the first antenna radiator. The first metal radiating plate is electrically connected to the first antenna radiator. The second device body includes a second frame and a second metal radiating plate. The second frame has a second antenna radiator and second slits located on both sides of the second antenna radiator. The second metal radiating plate is electrically connected to the second antenna radiator. The first antenna radiator has a feed connection point. The first antenna radiator is positioned corresponding to the second antenna radiator. The first slit is positioned corresponding to the second slit. In the folded state, the first antenna radiator and the second antenna radiator are coupled together through the first metal radiating plate and the second metal radiating plate.

The application discloses a kind of millimeter wave broadband filtering antennas with wide-angle beam scanning function and array, from top to bottom include broadband radiator, metal ground layer and microstrip line feed layer in sequence, the broadband radiator includes first rectangular patch, second rectangular patch and driving patch;By controlling the size of first metal patch, second metal patch and driving patch, the resonant frequency of broadband radiator is regulated;By adjusting the distance between first rectangular patch, second rectangular patch and driving patch, and the spacing of adjacent first metal patch and adjacent second metal patch, the coupling amount of broadband radiator is regulated, and the bandwidth of broadband radiator is further regulated.The application has simple and compact structure, wide impedance bandwidth, and can cover four millimeter wave frequency bands.

The present application relates to the technical field of metallurgical production, in particular to a method for reducing the mixing amount of coke oven gas in lime double-D kiln by oxygen-enriched combustion, specifically, oxygen injection guns and oxygen-enriched valve groups are installed in the air pipeline of the lime double-D kiln to control the oxygen flow, the lime double-D kiln is started, mixed gas containing coke oven gas and converter gas is introduced, the oxygen-enriched valve groups are then started, the oxygen enrichment degree is set from 1% and gradually increased, and the highest oxygen enrichment degree does not exceed 9%, the air-fuel ratio and the excess air coefficient are simultaneously reduced, and the mixed gas flow is reduced. By the method of oxygen-enriched combustion, the oxygen content in the calcination combustion-supporting air is increased, the combustion efficiency is improved, the combustion temperature is optimized, the air demand and the combustion product generation amount are reduced, the heat taken away by the flue gas is reduced, thereby the heat loss of exhaust gas can be reduced, the theoretical combustion temperature and the furnace gas radiation capacity can be improved, and the energy consumption can be greatly reduced.

The present application relates to a kind of high radiation resistance of control rod for stack entropy rare earth zirconate ceramic material and its preparation method and application, belong to nuclear reactor neutron absorption rod material technical field.The control rod ceramic material provided by the present application is prepared by using europium oxide, dysprosium oxide, thulium oxide and zirconium oxide as raw materials, according to certain proportion, after ball milling, calcination, green body forming and green body sintering process, and then processing to obtain the middle entropy rare earth zirconate ceramic material that can be applied to control rod.The rare earth zirconate ceramic material has excellent radiation resistance, large neutron absorption cross section and low reactivity value loss, and has high density, excellent thermal conductivity and low thermal expansion coefficient, and shows good application prospect in the field of control rod materials.

This utility model discloses a circuit board, an antenna device, and an electronic device. The circuit board includes a substrate, a first radiating arm, a second radiating arm, and a first ground layer. The substrate includes a first clearance area and a second clearance area spaced apart along a first direction. The first radiating arm is disposed in the first clearance area and has a first ground portion. The second radiating arm is disposed in the second clearance area and has a second ground portion. The first ground layer is disposed on the substrate and offset from the first and second clearance areas. At least a portion of the first ground layer is disposed between the first and second clearance areas to separate the first and second radiating arms. The first ground layer is grounded to both the first ground portion and the second ground portion. This circuit board can meet the isolation requirements of adjacent antennas, facilitating the integration of the radiating arms of the antenna device onto the circuit board, thereby contributing to the miniaturization of electronic devices.

The invention discloses a radio frequency chip integrated packaging structure and technology, and the structure comprises the following steps: carrying out the primary packaging of a first line which is parallel and is uniformly arranged at intervals, and forming a first packaging layer; holes are drilled in the surface of the first encapsulation layer to expose all end points of the first lines, metal is electroplated on the exposed end points to fill the drilled holes, wiring connecting columns are electroplated on a set of diagonal end points arranged on the two edge first lines, and first stand columns are electroplated on the other exposed end points; electroplating a wiring layer on one surface of the encapsulation layer, and electrically rearranging the wiring connecting columns; the electrical end of the bare chip is electrically connected and mounted with the corresponding wiring layer, and the bare chip and the wiring layer are encapsulated again to form an encapsulation layer II; drilling holes in the surface of the encapsulation layer II to expose the end points of the upright posts I, and electroplating upright posts II on the exposed end points to fill the drilled holes; the bare chip is located in the geometric center of the three-dimensional coil, the induction current and the signal intensity are optimal, the three-dimensional coil has the more omnidirectional induction characteristic, and stable coupling can be kept.

The invention relates to an antenna, base station equipment and electronic equipment, and the antenna comprises a phase inverter and a ground branch knot. Each of the phase inverter and the ground branch knot is provided with at least one bending part, the bending part is provided with a shunt branch knot, and the shunt branch knot is communicated to form two sides of the bending part so as to provide a current shunt. Therefore, the current path is increased by additionally arranging the shunt branches, and branches with different lengths are provided for high frequency and low frequency, so that the anti-phase effect and the radiation effect under a wide frequency band are improved, and the gain level is improved.

This invention belongs to the field of building materials technology and relates to a radiation-cooled paving brick and its preparation method. The radiation-cooled paving brick comprises, from bottom to top, a base layer, a functional layer, and a surface layer. The functional layer comprises, by weight, the following raw material components: 20-50 parts cement-based binder, 20-50 parts radiation-cooling functional filler, 0-30 parts aggregate, 0.5-2.5 parts admixture, and 0.1-0.5 parts reinforcing fiber. Both the functional layer and the base layer of this invention are cement-based materials, resulting in strong bonding. Through the synergistic effect of the functional filler in the functional layer and the cement hydration products with radiation-cooling function, and with the surface coated with an inorganic nano-high-hardness self-cleaning surface layer, a highly efficient and long-lasting radiation-cooling effect can be achieved.

The invention relates to a three-dimensional ultra-wideband Vivaldi antenna, and belongs to the technical field of electromagnetic fields and microwaves. The antenna is expanded in the H-plane direction, and a traditional planar antenna is converted into a three-dimensional antenna, so that the radiation aperture area of the antenna is effectively increased, and the radiation efficiency of the antenna is improved. The antenna comprises a feed structure and a double-radiation structure, the feed structure is composed of a coaxial line, a microstrip line and two microstrip line-to-parallel double lines, and the double-radiation structure is composed of two Vivaldi antennas which are the same in shape and are in mirror symmetry. Under the condition that the size of the E surface of the antenna is kept unchanged, the radiation aperture area is increased through the three-dimensional design, the radiation efficiency of the antenna and the aperture utilization rate of the array antenna are effectively improved, the technical problems that a traditional planar Vivaldi antenna is low in radiation efficiency, and the aperture is wasted during array application are solved, and the antenna is suitable for large-scale popularization and application. And miniaturization of the array antenna can be realized to a certain extent. In addition, the antenna structure form has high universality and can be suitable for antennas in other forms.

The application belongs to the technical field of antennas and relates to a spin-controlled array antenna based on spin-orbital torque, which comprises input patches, a connecting structure, antenna units and a substrate; the input patches are two, one corresponding end of which is connected with an external input source to input an alternating current signal, and the other corresponding end of which is connected with the connecting structure; the connecting structure comprises a plurality of branches to respectively connect different antenna units; the antenna units are a plurality to form a spin-controlled array; the input patches, the connecting structure, the antenna units and the substrate adopt different materials to generate the transfer of spin-orbital torque between the connecting structure and the antenna units by using the ferromagnetic resonance principle, excite spin waves, and convert the spin waves into electromagnetic waves by the antenna units and radiate them out. The application can realize extreme miniaturization on the premise of maintaining the performance of the antenna.

This disclosure relates to an antenna structure, a mid-frame, and an electronic device. The antenna structure includes a first stub and a second stub. The first stub has a feed point. A gap is provided between the second stub and the first stub. The gap between the feed point and the gap includes a first segment. The second stub has a first tuning circuit. The first tuning circuit is used to adjust the length of the second stub used for radiation. The gap between the first tuning circuit and the gap includes a second segment. When the antenna structure operates in a first frequency band, the second segment acts as a parasitic stub of the first segment to excite the eigenmode of the first frequency band. By adjusting the length of the second stub used for radiation through the first tuning circuit, the second segment acts as a parasitic stub of the first stub, thereby enhancing the radiation performance of the first frequency band and improving antenna efficiency. Simultaneously, adjusting the length of the second stub involved in radiation through the first tuning circuit can also take into account the radiation performance of other frequency bands.

The application provides a cross-band coupling interference suppression structure, a suppression system and a suppression method. In the cross-band coupling interference suppression structure, a low-frequency antenna is fixed at a first height position above a frequency selective surface and used for transmitting a low-frequency signal; a high-frequency antenna unit is fixed at a second height position below the frequency selective surface and used for transmitting a high-frequency signal; the frequency selective surface is used for reflecting the low-frequency signal and transmitting the high-frequency signal; and a reflection layer is arranged below the low-frequency antenna unit and used for reflecting the high-frequency signal. The application sets the frequency selective surface capable of transmitting the high-frequency signal and reflecting the low-frequency signal in the cross-band structure, enhances the radiation performance of the low-frequency signal of the low-frequency band antenna by reflecting the low-frequency signal, keeps the high-frequency band antenna electromagnetically transparent, avoids introducing additional insertion loss, reduces the cross-band coupling interference, and improves the working stability of the interference suppression structure.

The microwave millimeter wave co-aperture patch antenna comprises a metal reflecting floor, an upper layer dielectric substrate and a microwave metal patch arranged in a laminated manner, the microwave metal patch has an open slot and a microwave coupling slot, and a millimeter wave metal patch and a microwave feed strip are arranged inside respectively, the outer edge of the open slot is connected to the metal reflecting floor through a grounding rod, a millimeter wave signal excites the TM 01 mode of the millimeter wave metal patch, realizes millimeter wave broadside radiation of the millimeter wave metal patch, part of the energy is coupled to the outer edge of the open slot through the coplanar waveguide, and a vertical current is formed on the grounding rod, thereby generating low elevation angle radiation in the millimeter wave band, the millimeter wave broadside radiation and the low elevation angle radiation interact, and wide beam radiation of the millimeter wave is realized. Through unique structure optimization and technical innovation, the beam width of the millimeter wave is widened, and the miniaturization, low cost and high reliability of the antenna are maintained.

This application provides an antenna device and a communication device. By electrically connecting the active vibrator of the antenna device to the second end of a first conductor, and electrically connecting the first end of the first conductor to radio frequency signal ports on a circuit board, radio frequency signal transmission is achieved between the radio frequency signal ports and the active vibrator. Simultaneously, the first end of a switching element is electrically connected to the second end of the first conductor through a bias circuit, and the second end of the switching element is electrically connected to the second end of a second conductor through a bias circuit, with the first end of the second conductor grounded. This allows the bias circuit to control the on and off states of each switching element. In this way, the antenna device can freely switch between omnidirectional and directional radiation modes, while reducing the number of cables between the circuit board and the antenna body. Furthermore, by setting a radio frequency signal suppression circuit on the sub-bias circuit to suppress radio frequency signals from entering the bias circuit, the antenna radiation performance is improved.

The application discloses an antenna and a communication device, the antenna comprises upper and lower conductors which do not directly contact and have the same extension direction, the upper conductor comprises a radiation section and a resonant patch in sequence along the extension direction; the lower conductor comprises multiple second substructures which are separated in sequence along the extension direction, the radiation section at the first end of the upper conductor and the second substructure at the first end of the lower conductor are connected with the center feeding line and the ground of the feeding coaxial line respectively, the feeding coaxial line feeds the upper and lower conductors, and electromagnetic waves are emitted outward through the upper and lower conductors to realize the omnidirectional broadband radiation characteristic. The application retains the broadband characteristic of the leaky wave antenna and maintains the advantages of high efficiency and high radiation efficiency of the resonant antenna, and realizes the WLAN double-frequency broadband omnidirectional full coverage.

This application discloses a building antenna, relating to the field of wireless communication technology. The building antenna includes a base plate, an upper antenna, and a lower antenna. Both the upper and lower antennas are disposed on the base plate. The electromagnetic waves radiated by the upper antenna cover the upper part of a target building, and the electromagnetic waves radiated by the lower antenna cover the lower part of the target building. Both the upper and lower antennas include a substrate and at least two radiating elements. The substrate is disposed on the base plate, and each radiating element is disposed on the substrate and arranged in an array. The number of radiating elements in the lower antenna is greater than the number of radiating elements in the upper antenna. This solution can solve the problem of uneven signal coverage of current building antennas to target buildings.

The application provides an antenna assembly, which comprises a conductive plate, a ground plate, a conductive wall, a feed source and a matching unit. The conductive plate comprises a first edge, a second edge and a first connecting edge connected between the first and second edges. The ground plate is parallel to and spaced from the conductive plate, and comprises a third edge, a fourth edge and a second connecting edge connected between the third and fourth edges. The ground plate is grounded. The conductive wall is connected between the first and second connecting edges and used for connecting the first connecting edge to the ground. The conductive plate, the ground plate and the conductive wall form a cavity antenna with two open sides. The first and third edges are two opposite edges of one of the open sides, and the second and fourth edges are two opposite edges of the other open side. The cavity antenna supports the reception of electromagnetic wave signals of two frequency bands under the excitation of the feed source and the impedance matching adjustment of the matching unit. The application also provides an electronic device. The application can ensure the antenna performance in an effective clearance area.

This invention discloses a quasi-cavity, small-scale anti-metal UHF tag antenna in the field of radio frequency identification (RFID) technology, aiming to solve the problems of excessive size and volume in existing anti-metal UHF electronic tags. It includes a quasi-metallic cavity, which consists of a metal bottom surface and three metal side surfaces. An internal foam layer is provided, and a dielectric substrate is placed on the foam layer. A tag antenna pattern is printed on the upper surface of the dielectric substrate. The tag antenna pattern, from the outside in, includes an open conductor rectangular ring, two irregularly shaped multi-turn conductor rectangular rings, a lateral adjustment conductor strip, and a longitudinal adjustment conductor strip. The two irregularly shaped multi-turn conductor rectangular rings are symmetrically arranged, and a tag chip is connected to their central portion. This invention has a simple structure, reduces the size of the anti-metal UHF tag antenna, and has better radiation performance and easier impedance adjustment.

The application provides a wearable device, and belongs to the technical field of electronic products. The wearable device comprises a device body and a fixing band. A half-mode resonant cavity antenna unit and a high-dielectric material filling medium are arranged on the fixing band. The half-mode resonant cavity antenna unit comprises a first metal layer, a second metal layer and a metal connecting structure. The distance from the first metal layer to the back of the fixing band is less than the distance from the second metal layer to the back of the fixing band. The metal connecting structure is connected with the first metal layer and the second metal layer respectively. The first metal layer, the second metal layer and the metal connecting structure enclose a metal resonant cavity with an open side. The open side of the metal resonant cavity faces a target side edge of the fixing band. A gap for radiation is arranged on the second metal layer. The high-dielectric material filling medium is arranged between the target side edge and the open side of the metal resonant cavity. The target side edge is a first side edge or a second side edge. The first side edge and the second side edge are two opposite side edges of the fixing band arranged along the length direction.

The application provides a low-profile duplex filter antenna and belongs to the technical field of wireless energy transmission.The low-profile duplex filter antenna comprises an upper metal floor, a dielectric substrate, a lower metal floor, a cavity column, a perturbation via and a suppression via; the lower metal floor is arranged on the lower surface of the lower dielectric substrate; the upper metal floor is arranged on the upper surface of the dielectric substrate; the cavity column penetrates through the upper metal floor, the dielectric substrate and the lower metal floor and surrounds a substrate integrated waveguide cavity; the perturbation via and the suppression via penetrate through the upper metal floor, the dielectric substrate and the lower metal floor; a cross-shaped groove is etched in the center of the upper metal floor; two complementary split ring resonator grooves with different diameters are etched at the connection between the circular cavity and the two side rectangular cavities of the upper metal floor; two feed lines are led out from the two ends of the upper metal floor. The antenna has the characteristics of low profile, is easy to integrate, and simultaneously reduces the manufacturing cost of the antenna and facilitates processing and manufacturing.

The application belongs to the technical field of antennas and relates to a polarization conversion unit, a polarization conversion surface and an electromagnetic stealth slot antenna. The polarization conversion unit comprises, from top to bottom, a patch layer, a dielectric layer and a ground layer. The patch layer comprises a first part and two second parts. The first part and the second parts are rectangular structures, and the edges of the two second parts partially overlap the edges of the first part, so that the patch layer forms a central symmetric structure. The center of the patch layer is directly above the center of the dielectric layer, and the patch layer is distributed along the diagonal of the dielectric layer. The length of the first part is greater than the length of the second part, the width of the first part is twice the width of the second part, and the two vertices of the first part on the same diagonal are respectively arranged at the midpoint of the long side of a second part. The application can reduce the scattering performance while normally radiating electromagnetic waves.

The utility model relates to the technical field of antennas, and discloses a planar ultra-wideband antenna which comprises a telescopic rod, a threaded head is fixedly arranged at the upper end of the telescopic rod, and a cross groove is formed in the upper end of the threaded head. A first double-plane type ultra-wideband antenna body and a second double-plane type ultra-wideband antenna body are arranged in the cross groove in a crossed mode, and the upper end of the threaded head is sleeved with an inner threaded cover in a threaded mode. According to the planar ultra-wideband antenna, through the structural design, the planar ultra-wideband antenna has the advantages of being convenient to disassemble, adjustable in height, enhanced in performance and the like, is suitable for the fields of various wireless communication devices, radar systems, electronic countermeasure devices and the like, and has wide application prospects.

The present invention relates to a system (10) for connecting electronic components (12), and more particularly to a welding or sintering system (10a) comprising a transport device for transporting the electronic components (12) through the system (10), and a plurality of modules (16) for interconnecting the electronic components (12), the modules being hermetically separated, wherein at least one module (16) is a welding and / or sintering module (18), and one module (16) is a cooling module (20). The invention is characterized by an additional module (16), which is a soft cooling module (22), provided between the welding or sintering module (18) and the cooling module (20), for cooling between the process temperature and intermediate temperature of the welding or sintering module (18), and more particularly for cooling below the solder solidification temperature. In a second aspect, it is proposed that in a module (16), more particularly in a welding or sintering module (18), and more particularly in a soft cooling module (22), at least one heat source (50) and at least one cold trap (46) for heating the electronic component (12) are provided in a process chamber (52) that may be hermetically sealed, the heat source being in contact with the electronic component (12) and the cold trap having a surface temperature lower than the operating temperature of the heat source (50) during operation.

This invention proposes a composite rod-type magneto-electro-mechanical antenna and its fabrication method, belonging to the field of mechanical antenna technology. It solves the problems of low power capacity, weak radiation capability, and short communication distance commonly found in existing magneto-electro-mechanical antennas. It comprises a magnetostrictive layer, two transition layers, two sets of driving layers, and two sets of tail mass blocks. The magnetostrictive layer is located at the center, with the transition layer, driving layer, and tail mass blocks arranged sequentially from the center to both ends on either side. Each driving layer is composed of multiple piezoelectric ceramic rings and multiple electrode sheets stacked alternately. Each tail mass block consists of mass block one, a disc spring, and mass block two connected sequentially. The length of this composite rod-type magneto-electro-mechanical antenna is comparable to that of a traditional three-layer magneto-electro-electric antenna. When the antenna adopts the first-order longitudinal mode, it can operate in the very low frequency band. Depending on different application requirements, the composite rod-type magneto-electro-mechanical antenna of this invention can adopt the second-order longitudinal mode or operate in other frequency bands.

The invention relates to an electronic device which comprises a middle frame, a circuit board and a conductive structure, the middle frame comprises a supporting part and a frame surrounding the supporting part, the frame is provided with a breaking joint, and the frame located on one side of the breaking joint forms a first antenna radiator; the circuit board is arranged on the supporting part, and an antenna clearance area is arranged on the circuit board; the conductive structure is arranged in the antenna clearance area, and the conductive structure is used for being coupled with the first antenna radiator. Therefore, the radiation capability of the first antenna radiator can be effectively improved, and the antenna performance of the first antenna radiator is improved, so that the communication performance of the electronic equipment is improved.

The utility model discloses an LORA antenna, which relates to the technical field of antennas and comprises a circuit board and a coaxial line, the circuit board is a flexible circuit board, the front surface of the circuit board is provided with a radiator, a first connection point and a second connection point, one end of the coaxial line is electrically connected with the first connection point, and the other end of the coaxial line is electrically connected with the second connection point. The first connecting point is arranged on the coaxial line, the second connecting point is arranged on the coaxial line on the outer side of the first connecting point, the coaxial line is fixedly connected with the circuit board, and the radiator is connected with the circuit board through the first connecting point and the second connecting point. The structure of the circuit board is not damaged even if the antenna is deformed under the action of external force, so that the antenna is easier to install in equipment, the installation process is more convenient, the compatibility is enhanced, the structural stability is high, and the antenna is stronger in radiation directivity and better in radiation effect due to the fact that the radiator is arranged on the circuit board.

The application discloses a dual-band multi-polarization common-aperture array antenna, and relates to the technical field of microwave antennas, comprising a low-band horizontal polarization array antenna, a low-band vertical polarization array antenna, a high-band vertical polarization array antenna and an electromagnetic surface realized by a dielectric, a copper foil sheet and a dielectric metallization structure; wherein the dielectric is a laminated structure realized by four-layer dielectric plates, and the four-layer dielectric plates are respectively a first dielectric plate, a second dielectric plate, a third dielectric plate and a fourth dielectric plate; each array antenna comprises a plurality of two-dimensionally distributed planar dipoles, and the planar dipoles of the low-band horizontal polarization array antenna are first planar dipoles; the height of the dual-band multi-polarization common-aperture array antenna is 0.12 lambda 0, less than half of the height of a conventional dipole antenna, and the radiation arm length is also shorter, so that the dual-band multi-polarization common-aperture array antenna has the characteristics of flatness and low profile compared with a conventional dipole realized by a metal rod or a metal plate.

The application discloses a pseudo-virtual element method for a small-scale tightly-coupled electric scanning array, which comprises the following steps: S1, performing period boundary debugging and determining basic unit parameters; S2, establishing a complete array comprising effective units (1) and pseudo-virtual elements (2), and performing small signal feeding on the pseudo-virtual elements (2) to determine the size of the pseudo-virtual elements (2) and small signal power; S3, setting the input impedance of the pseudo-virtual elements (2) as Z1, setting the input impedance of the effective units (1) as Z2, simultaneously connecting the virtual elements without adjacent effective units (1) to a preset load as real virtual elements (3), simulating the complete array, and fine-tuning structure parameters and the size of a power divider (4) to complete the design. The application can significantly suppress the performance deterioration caused by the edge effect, improve low-frequency standing wave and radiation performance, maintain array phase consistency and scanning performance, and is suitable for super wideband small-scale tightly-coupled electric scanning arrays and has strong engineering implementation.

This application discloses a combined LTE and WiFi antenna and antenna product. The antenna includes a satellite message and positioning antenna, an antenna board, a base, and multiple supporting components. The satellite message and positioning antenna is mounted on the base, and the multiple supporting components are arranged around the satellite message and positioning antenna as the center on the base. One end of each supporting component is connected to the base, and the other end is connected to the antenna board, used to fix the antenna board above the satellite message and positioning antenna. The antenna board includes a substrate, an LTE wiring section, a WiFi wiring section, and multiple mounting holes for corresponding connections with the supporting components. The substrate supports the LTE and WiFi wiring sections. The LTE wiring section is used for antenna resonance in the LTE frequency band, and the WiFi wiring section is used for antenna resonance in the WiFi frequency band. Compared with the traditional FPC bonding solution near the metal base, this application can effectively improve the radiation efficiency of the LTE antenna and WiFi antenna, while reducing interference with the original satellite message and positioning antenna.