6results about How to "Simple feed structure" patented technology

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.

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 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.