14results about How to "Simple feed structure" patented technology

The invention discloses a terahertz wave band circularly polarized antenna based on sequential rotation feeding, and belongs to the field of radio frequency front-end devices. The circularly polarized antenna is composed of four microstrip patches, chamfers located on a radiation patch, a microstrip line, a microstrip line feed port, a sequential rotation feed network, a dielectric substrate, a metal ground backboard and a microstrip line matching structure. A 90-degree phase difference is generated by strictly designing the electrical length from each port to the feed network to realize circular polarization performance, right-handed circularly polarized waves are radiated, the radiation gain is 10.47 dB, the 3dB axial ratio bandwidth is greater than 8GHZ, the 3dB axial ratio range exceeds 90 degrees, and the complete half-power beam width is covered. The antenna adopts the microstrip line for feeding, the loss of the microstrip line is small, the microwave transmission characteristic is good, and the antenna radiation efficiency is high. The antenna adopts a single-layer board design, has no complex feed network, and is simple in structure and convenient to manufacture.

The invention discloses a millimeter wave polarization and directional diagram reconfigurable antenna, and belongs to the field of radio frequency front-end devices. The antenna is composed of symmetrical rectangular radiation patches, and a semicircular defect, a quarter circle defect, a rectangular branch load, an orthogonal bidirectional feed network, a T-shaped power dividing feed network, a composite beam ohmic contact type MEMS switch, a direct current bias line, a test patch bonding pad, a coplanar waveguide, a gradient matching structure, a dielectric substrate and a metal ground backboard which are located on the radiation patches. When the single-side MEMS switch on the T-shaped power dividing feed network is switched on, energy flows to the radiation unit on the side, and the leftward or rightward wave beam inclination effect can be achieved. When the MEMS on the two sides are both switched on, the radiation pattern points to the Z positive axis, no beam deflection exists, and therefore the pattern reconfigurable function in the left direction, the middle direction and the right direction can be achieved. When a switch on the orthogonal bidirectional feed network is closed, the size of the long line can realize 90-degree phase delay, and two orthogonal degenerate modes are synthesized into a circularly polarized wave to cover a complete half-power beam width.

A slab waveguide slot antenna unit provided by the present invention comprises a radiation unit, an excitation unit and a feed unit, the radiation unit comprises a radiation square cavity and a radiation slot, the excitation unit comprises an excitation square cavity and an excitation slot, the feed unit comprises a feed square cavity and a feed slot, and the feed slot is connected with the excitation square cavity. According to the invention, a special radiation slot design is adopted, so that the radiation aperture efficiency is improved, more input energy can be effectively radiated into a free space, and the transmitting and receiving efficiency of the antenna is improved; the antenna comprises the gaps in the excitation square cavity and the feed square cavity, so that the feed structure is simplified, the antenna is easier to manufacture and maintain, and the cost and the complexity are reduced; the simplification of the feed structure also helps to improve the stability and reliability of the antenna. The whole waveguide antenna has axial symmetry, so that manufacturing and adjustment are more convenient. And the axisymmetric structure is beneficial to keeping the symmetry and consistency of the antenna, so that the stability of the performance is improved.

The invention relates to a low-frequency lightweight high-gain antenna, and relates to the technical field of compact range feed source antennas. The low-frequency lightweight high-gain antenna provided by the invention comprises a dielectric radiation section, a foam support section and a balanced feed section, the dielectric radiation section is composed of a plurality of concentric dielectric cylinders, electromagnetic waves can be radiated out, the antenna gain can be improved, and the foam supporting section is used for supporting the radiation section, so that a certain distance condition is met between the dielectric radiation section and the feed section. The radiation section adopts a balanced feed mode to excite the antenna, and dual polarization is realized at the same time. The antenna provided by the invention has the advantages of simple structure, low processing cost, high gain, light weight, wide bandwidth and the like.

The application relates to the technical field of antennas, in particular to a binary super-gain magnetic dipole antenna based on a zero-phase shift wire ring. The antenna comprises a rectangular dielectric substrate, a circular metal pad, a metal patch and a coaxial line feed; the circular metal pad is fixed to the lower end surface of the dielectric substrate, and the metal patch is attached to the upper end surface of the dielectric substrate; the coaxial line feed is located in the circular metal pad, the outer conductor of the coaxial line feed is connected with the circular metal pad, and the upper end of the coaxial line feed penetrates through the dielectric substrate, and the inner conductor of the coaxial line feed is connected with the metal patch; the application breaks through the design mode of the previous microstrip magnetic dipole antenna, realizes a high-gain double-zero-phase shift ring magnetic dipole antenna under an extremely close spacing, the feed structure is simple, only one feed port is needed to realize the antenna, the antenna has the characteristics of low profile, is convenient to process and has low production cost.

The invention relates to the technical field of IC carrier plate production, in particular to an IC carrier plate automatic sorting device and a working method thereof.The IC carrier plate automatic sorting device comprises a workbench, a feeding conveying belt arranged at one end of the top of the workbench and a discharging conveying belt installed at the other end of the top of the workbench; a mechanical grabbing arm is arranged at the position, at the feeding end of the feeding conveying belt, of the top of the workbench, a feeding frame is arranged at the position, at the feeding end of the feeding conveying belt, of the workbench, a sorting and removing camera is arranged at the position, between the mechanical grabbing arm and the feeding frame, of the workbench, and the feeding frame is of a U-shaped structure. One end of the feeding conveying belt is fixedly installed at the center of one side of the feeding frame through bolts, and a containing groove is formed in the center of the top of the feeding frame. The inclined insertion plate is inserted between the two IC carrier plate bodies through the movable grooves, separation of the IC carrier plate bodies is achieved, damage caused by friction of the two IC carrier plate bodies when the bottom IC carrier plate bodies are pushed out and separated is avoided, the inclined insertion plate is reset through the torsion springs, and the separation protection performance is high.

The invention discloses a three-frequency polarization reconfigurable single-feed patch antenna, comprising a first and a second dielectric substrate, an input port, a PIN diode, an inductor, a capacitor and a voltage module; the first dielectric substrate is located above the second dielectric substrate, and an air layer exists between the two dielectric substrates; a rectangular radiation patch is provided on the top surface of the first dielectric substrate, three sides of the rectangular radiation patch are loaded with open-circuit stubs, the open-circuit stubs are connected to the rectangular radiation patch through PIN diodes, three slits parallel to the adjacent sides are opened inside the rectangular radiation patch, and a PIN diode is bridged at the center of each slit; a floor with slits is provided on the top surface of the second dielectric substrate, and a microstrip feeder of the input port is provided on the bottom surface, and the microstrip feeder of the input port excites the rectangular radiation patch through the slits on the floor. The invention can realize the switching of polarization characteristics in three frequency bands, and has the advantages of diversified functions, flexible design, low profile, low cost, etc.

The present invention discloses a Fabry-Perot cavity antenna with a wide 1dB gain bandwidth based on an artificial electromagnetic metasurface, and belongs to the field of antenna technology. The Fabry-Perot cavity antenna comprises three parts: a microstrip antenna, a partial reflecting surface, and an artificial electromagnetic metasurface above the partial reflecting surface. Among them, the partial reflecting surface has a phase increasing with frequency and a high reflection coefficient in the entire working frequency band; the artificial electromagnetic metamaterial surface above the partial reflecting surface is mainly used to improve the problem of low high-frequency gain caused by the resonance condition not being well satisfied in a broadband case. The present invention mainly increases the gain of the antenna in a broadband while ensuring the stability of the gain by loading a partial reflecting surface and an artificial electromagnetic metasurface above the feeding antenna. The antenna has the advantages of high gain, wide 1dB gain bandwidth, low profile, high directivity, low sidelobe level, etc., and has a high engineering application value in wireless communication applications.

This disclosure relates to an antenna structure and an electronic device. The antenna structure includes: a ground layer; a dielectric substrate disposed on the surface of the ground layer; a feed line disposed within the dielectric substrate; and a radiator disposed on the surface of the dielectric substrate facing away from the ground layer. The radiator includes a radiating portion, a hollow region, a feed point, and a ground point spaced apart from the feed point. The radiating portion encloses the hollow region. The feed point and the ground point are both disposed within the radiating portion. The ground point is electrically connected to the ground layer, and the feed point is electrically connected to the feed line. The radiating portion includes a first radiating region and a second radiating region spaced apart from the first radiating region. The first radiating region radiates signals in a first frequency band, and the second radiating region radiates signals in a second frequency band. The first frequency band is distinct from the second frequency band, and both the first and second frequency bands belong to ultra-wideband frequency bands.

The invention discloses a chain link type assembly robot for a high-precision cement chain, and relates to the field of assembly equipment, and the chain link type assembly robot comprises a main assembly rack, a chain plate feeding frame, a pin shaft feeding frame, a sleeve feeding frame and a press fitting bracket. The invention further discloses an assembly process of the chain link type assembly robot for the high-precision cement chain. The assembly process comprises the following steps of chain plate positioning and feeding, pin shaft and sleeve pre-combination, pin shaft and chain plate pre-combination, asynchronous press fitting and discharging. Pin shafts and sleeves are pre-combined so as to guarantee the precision after chain links are assembled, independent feeding of the pin shafts and the sleeves is completed in an intermittent feeding mode, it is guaranteed that the interval between the fed pin shafts and the sleeves is precise, the precision of the interval between the pin shafts in the chain links is guaranteed from the source, and in addition, the precision of the interval between the pin shafts in the chain links is guaranteed. And the pin shaft and the sleeve are pre-combined in the feeding process, so that the assembling efficiency of the device is effectively improved.

The application belongs to the technical field of electromagnetic radiation, and particularly provides a full-metal antenna unit and an array thereof capable of switching left-handed and right-handed circular polarization, wherein, in the antenna unit, four identical linear polarization antenna array elements are sequentially arranged by rotation, and the radiation and switching of the antenna unit to left-handed and right-handed circularly polarized waves are conveniently realized by applying specific excitation phase differences to the four linear polarization antenna array elements. Further, in the full-metal antenna unit, the single-point feeding metal feeding probe adopted by each linear polarization antenna array element and the symmetrical structure of the two metal prisms adhering to the right-angle edges of the metal ground plate guarantee the stability and reliability of the phase adjustment of the linear polarization wave orthogonal components; meanwhile, the full-metal structure of the entire antenna unit improves the environmental interference resistance of the antenna unit and further reduces the processing difficulty and production cost.

The utility model discloses a single feed dual -frequency four -armed helical circular polarization antenna belongs to communication technical field, including low frequency antenna and high frequency antenna, the low frequency antenna includes low frequency radiator and the low frequency substrate at low frequency radiator bottom, the high frequency antenna includes high frequency radiator and the high frequency substrate at high frequency radiator bottom, and low frequency antenna and high frequency antenna are arranged with the same axis sleeve structure, and low frequency antenna is located at the inside of high frequency antenna, and the bottom of high frequency antenna and low frequency antenna is jointly connected with the PCB mainboard. This single feed dual -frequency four -armed helical circular polarization antenna, through the same circle center sleeve structure of high frequency antenna in and low frequency antenna in, the volume is reduced greatly, and the portable equipment demand is adapted, through the phase shift network, the polarization direction can be changed flexibly, and the signal adaptability is improved, and with small size, light weight and dual -frequency characteristics, can be effectively applied to portable satellite communication equipment, satisfies the communication demand under the mobile scene.

The utility model provides a circularly polarized millimeter wave radar antenna and radar equipment, and belongs to the technical field of antennae, the circularly polarized millimeter wave radar antenna comprises a microstrip antenna array, the microstrip antenna array is composed of a plurality of periodic antenna units, the antenna unit of each period comprises a plurality of elbow structures, each elbow structure comprises a right-angle elbow and an oblique-angle elbow, the antenna is used for radiating and propagating traveling waves; and the impedance structure is located at the tail end of the microstrip antenna array, the impedance structure is an equivalent resonance circuit, and parameters of the resonance circuit are adjusted to obtain required impedance matching. The feed structure of the antenna can be simplified, the energy loss is reduced, and the working bandwidth is improved.

The invention discloses a rectangular coaxial waveguide-based unidirectional broadband spiral slot antenna and a manufacturing method thereof, and relates to the technical field of broadband unidirectional circularly polarized antenna design. The antenna structure is based on a rectangular coaxial waveguide, the broadband performance of the antenna is realized by using the broadband-pass characteristic of the rectangular coaxial waveguide, and meanwhile, the sizes of inner and outer conductors of the coaxial waveguide are reasonably adjusted, so that the characteristic impedance of the waveguide approaches 50 omega. According to the invention, the use of a balun and a matching network is effectively avoided, and the antenna structure is greatly simplified.