13results about How to "Guaranteed radiation performance" patented technology

The invention provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiation branch knot, a second radiation branch knot, a feed source and a signal processing unit. The first radiation branch knot comprises a first feeding point, and the second radiation branch knot comprises a second feeding point; the feed source is used for providing a feed signal. The signal processing unit is connected among the feed source, the first feed point of the first radiation branch knot and the second feed point of the second radiation branch knot, and is used for converting a feed signal provided by the feed source into a first feed signal and a second feed signal, and respectively outputting the first feed signal and the second feed signal to the first feed point and the second feed point, the first feed signal and the second feed signal have the same frequency, and the first radiation branch knot and the second radiation branch knot integrally work in a radiation mode under excitation of the first feed signal and the second feed signal respectively so as to support receiving and transmitting of electromagnetic wave signals of a preset frequency band. According to the invention, the SAR value can be effectively reduced while the antenna performance is ensured.

The invention relates to the technical field of microwaves and antennas, particularly discloses a miniature ultra-wideband planar helical antenna based on a magnetic medium, and aims to solve the problem that indexes such as miniaturization, ultra-wideband, high gain and circular polarization are difficult to consider in the design of an existing helical antenna. The helical antenna structure comprises an antenna radiation unit, a metal stepped shielding inner cavity, a Balun feed structure, a feed connector, a circular metal reflection back cavity and a magnetic dielectric material. According to the invention, the magnetic dielectric material is arranged below the radiation circuit so as to regulate and control the surface current distribution at the tail end of the circuit and centrally regulate and control the size and direction of an electromagnetic field vector in a cavity, so that the reduction of the transverse and longitudinal dimensions of the antenna is effectively realized; the impedance matching bandwidth and the axial ratio bandwidth of the miniaturized antenna can be improved while the high gain of the antenna is kept, the extremely high impedance matching bandwidth can be realized, and the excellent circular polarization characteristic is kept in the bandwidth range.

The invention discloses a wide-angle-domain low-scattering antenna design method based on a characteristic mode theory, and belongs to the technical field of antenna stealth design. The antenna is designed according to radiation performance requirements, then radiation mode analysis is carried out, the important radiation mode is determined according to the mode amplitude, and the area to be reserved of the antenna is determined according to the mode current distribution condition of the important radiation mode of the antenna; then, calculating a wide-angle-domain RCS and a scattering mode of the antenna according to a stealth requirement, selecting a common important scattering mode in the wide-angle domain according to the scattering mode amplitude, and selecting scattering current which can be removed or cut according to the current distribution condition of the common important scattering mode of the antenna and the current distribution characteristics of the important scattering mode; and the mode current of an important radiation mode is not influenced, so that the wide-angle-domain low-scattering antenna design is realized. The antenna designed by the invention has the advantages of integration of radiation and scattering, wide angular domain and low scattering, and can meet single-station / double-station RCS stealth requirements.

The invention relates to an antenna module, a laminated assembly and a vehicle. The antenna module comprises a feed terminal used for accessing an excitation signal corresponding to a target frequency band; the feed arm is connected with the feed terminal, and the size of the feed arm is larger than half of the wavelength of the target frequency band; and a plurality of radiation arms, the plurality of radiation arms are annularly distributed at intervals, and the plurality of radiation arms are coupled with the feed arm to excite the annular current flowing along the plurality of radiation arms, so that the antenna module supports omnidirectional radiation of a target frequency band. The antenna module is small in size and low in cost.

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 present disclosure relates to a dual-polarization radiation unit for an antenna, an antenna, and an antenna system. The dual-polarization radiation unit for an antenna according to the present disclosure includes: four dipoles, wherein the radiation arms of the four dipoles are planar structures and are symmetrical about two mutually perpendicular lines, wherein the two mutually perpendicular lines divide the radiation unit into four regions, and the central parts of the four regions are DC-conductive, and wherein each of the four regions has a hollow region.

The present disclosure relates to a packaged filtering antenna, comprising at least one filtering antenna unit, each filtering antenna unit comprising: a dielectric substrate layer, an antenna radiation patch arranged on a first end surface on top of the dielectric substrate layer, an antenna feed point arranged on a second end surface on the bottom of the dielectric substrate layer, and an absorption type filter arranged in the dielectric substrate layer, an input end of the filter corresponding to the antenna feed point in a Z-axis direction perpendicular to the dielectric substrate layer and being connected by a third group of metallized blind holes; and an output end of the filter corresponding to a second radiation patch hole disc in the Z-axis direction and being connected by a second group of metallized blind holes. The packaged filtering antenna of the present disclosure forms a vertical cascade between the antenna feed point and the filter input end, and between the filter output end and the antenna radiation patch, and integrates the antenna and the filter in the vertical direction, thereby effectively reducing the size of the filtering antenna in a two-dimensional plane, and having the performance of filtering, signal radiation and interference signal absorption.

The present invention discloses a phase gradient-based coded metasurface antenna array structure, comprising a metal patch layer, a first intermediate dielectric layer, a metal floor layer, a second intermediate dielectric layer, a feed network layer, a third intermediate dielectric layer and a DC bias network layer pressed together in sequence; the metal patch layer comprises a plurality of rectangular patch units, and the lower surfaces of the patch units are connected to the feed network layer in a vertical direction through a first feed column; a second feed column is arranged on each side of the first feed column, connecting the patch unit and the DC bias network layer; the present invention also provides a corresponding design method, so that the cross-polarized scattering phase of the designed coded metasurface antenna array structure when four diodes are on and off satisfies the phase difference of 180°±37°, which can achieve the purpose of antenna band stealth inside and outside and present different dynamic scattering effects.

The invention discloses a high-speed aircraft skin structure and a manufacturing method, and belongs to the technical field of aircraft skin design. The skin structure comprises a bearing-high temperature resistant substrate and a radiation and stealth integrated metasurface antenna embedded in the substrate. The invisible integrated metasurface antenna comprises a slotted metal microstrip layer located at the top, a metal through hole located in the middle and a feed network structure located at the bottom. The bearing-high-temperature-resistant substrate is of a double-layer structure, the upper layer is a microstrip line substrate, the lower layer is a feed network substrate, and the microstrip line substrate and the feed network substrate are provided with aligned vertical via holes. The high-speed aircraft skin has the comprehensive capacity of invisibility, information transmission, bearing and high-temperature resistance.

The utility model discloses a curved surface attached flexible circuit board antenna, which comprises a circuit board body and a micropore array, the circuit board body comprises a deformation area and a fixed area, the micropore array is arranged in the deformation area, and the micropore array comprises a plurality of through holes distributed in an array; the circuit board body comprises an insulation surface layer, an insulation grid layer, a conductive circuit layer, a compensation circuit layer and an insulation bottom layer which are stacked in sequence, the conductive circuit layer comprises a radiation circuit and a welding terminal, the line width of the radiation circuit is larger than the aperture of the through hole, the radiation circuit is arranged in the deformation area, and the welding terminal is arranged in the fixing area. The compensation line layer comprises a plurality of compensation radiation rings connected with the radiation line, and the compensation radiation rings surround the periphery of the through hole. According to the utility model, the elastic modulus of a deformation area can be effectively reduced, the stress during bending is released, the stress concentration is avoided, the curved surface attachment effect is stable and reliable, the signal transmission reliability is high, and the structural stability is strong.

This application relates to the field of communication equipment technology, and in particular to a portable ultra-wideband antenna device for a four-in-one 5G backpack. It includes an antenna housing and a multi-in-one connector disposed within the antenna housing. The multi-in-one connector also electrically connects to a radio frequency (RF) connector. An antenna radiating element group is located inside the antenna housing and electrically connected to the RF connector. The antenna radiating element group includes a first antenna, a second antenna, a third antenna, and a fourth antenna arranged sequentially at intervals along the vertical direction of the antenna housing. In this application, the multi-in-one connector integrates the feed lines of the four antenna elements onto a single interface, simplifying the connection to the RF connector and achieving a compact structure. It integrates four independent antenna systems into a lightweight fiberglass rod, avoiding the cumbersome and bulky nature of externally mounted multiple antennas, perfectly meeting the operational or emergency needs of individual soldiers carrying and moving quickly.

The invention discloses electronic equipment, and belongs to the technical field of electronic products. The electronic equipment comprises a frame body, wherein at least one through hole is formed in the frame body; the antenna unit comprises a plurality of antenna flexible printed circuit (FPC) parts and at least one metal plate body; wherein the metal plate body is arranged on the peripheral side of the through hole, and the antenna FPC part is attached to the surface of the frame body; and the two antenna FPC parts arranged at the two sides of the through hole are conducted through the metal plate body.

The invention belongs to the technical field of microstrip antennas, and particularly relates to a low RCS microstrip antenna based on a coding metasurface, which solves the technical problem of how to realize RCS reduction of the antenna and ensure radiation performance of the antenna, and comprises a dielectric substrate, the upper surface of the dielectric substrate is printed with the coding metasurface, and the lower surface of the dielectric substrate is printed with a metal ground plane. The coding metasurface is formed by a rectangular array formed by randomly arranging a first coding unit and a second coding unit, and the reflection phase difference of the first coding unit and the second coding unit is 180 degrees; a microstrip patch antenna is printed in the center of the upper surface of the dielectric substrate, a coaxial line feed port is arranged on the lower surface of the dielectric substrate in an embedded mode, and an inner conductor of the coaxial line feed port is connected with the microstrip patch antenna. According to the invention, the bandwidth of the unit reflection phase is expanded; the electromagnetic waves of the coding metasurface are subjected to diffuse reflection, so that RCS reduction is realized; a microstrip patch antenna is printed in the center of the coding metasurface, so that the radiation performance of the antenna is ensured while the RCS is reduced.