3 results about "Radial waveguide" patented technology

The invention discloses a heat treatment device for a metal wire and a using method. The heat treatment device comprises a base, and a quantum dot catalytic phase change assembly, a spinning electron resonance heating assembly, an air cooling assembly and a water cooling assembly are sequentially arranged on the base in the advancing direction of the metal wire; the quantum dot catalytic phase change assembly comprises a rotating ring, and a plurality of electrostatic atomizing nozzles and a plurality of infrared semiconductor lasers which are arranged in an annular array mode are installed in the rotating ring. The spinning electron resonance heating assembly comprises a plurality of superconducting magnet rings, a slotted radial waveguide resonant cavity is arranged in the superconducting magnet rings in a sleeved mode, and an oil cooling groove is formed between the slotted radial waveguide resonant cavity and the air cooling assembly. The oil cooling tank, the air cooling assembly and the water cooling assembly sequentially conduct gradient cooling on the metal wire heated by the spinning electron resonance heating assembly. According to the invention, the problems of non-uniform structure properties, deformation and cracking caused by section temperature difference due to a heating mode from outside to inside in the traditional metal wire heat treatment are solved.

The invention discloses a liquid crystal holographic phased array antenna measurement calibration device and a test method, and belongs to the technical field of satellite phased array communication antennas. The equipment comprises a rack assembly, a Z-axis jacking assembly, an X-axis moving assembly, a Y-axis moving assembly, an antenna mounting and fixing plate and a polarization rotation measurement centering assembly. The three-axis coordinate mechanism is installed in an inverted mode, so that reflection interference of metal parts on signals in the testing process is effectively reduced. The antenna circular array center can be automatically centered in combination with a polarization rotation measurement assembly, circular interpolation and linear interpolation motion are supported, and the amplitude-phase test requirements of the circular array antenna in the radial direction and the circumferential direction are met; the invention further provides an automatic test and calibration process for the planar radial waveguide and the liquid crystal tunable resonator array, the resonance driving voltage of each liquid crystal resonant cavity under the specific frequency can be efficiently and accurately calibrated, a foundation is laid for generating a high-precision holographic interference pattern, and the test efficiency and the calibration precision are remarkably improved.

This invention discloses a near-field focusing circularly polarized radial slot array antenna and its design method. Based on a single-layer radial waveguide, the antenna employs direct feeding via coaxial probes. The focal position and circular polarization direction are adjusted by modifying the slot pair layout and slot orientation. Etching helical slots improves the antenna's radiation performance, and loading short-circuit probes suppresses the influence of higher-order modes. This invention addresses the limitations of existing technologies, such as the application scenarios of ring-distributed slot pairs, the difficulty in implementing electromagnetic algorithm analysis, and the low radiation efficiency of existing near-field focusing antennas. This invention achieves near-field focusing characteristics not yet present in existing radial slot array antennas, reducing the structural complexity of existing near-field focusing antennas and improving antenna efficiency.