9 results about "Radial waveguide" patented technology

Provided is a power distributor / combiner 1 that outputs an input microwave power after distributed or combined; the power distributor / combiner 1 including: a main body 10 that defines a radial waveguide 101 as a substantially cylindrical cavity; a center terminal 11 as an electromagnetic field coupling terminal, arranged in the radial waveguide 101 of the main body 10 while aligned with the center axis C of the radial waveguide 101; and a plurality of peripheral terminals 12 as electromagnetic field coupling terminals, arranged in the radial waveguide 101 radially away from the center terminal 11, and the radial waveguide 101 having a radius R smaller than a quotient of a free-space wavelength at a frequency of the microwave power, divided by 2.619.

Systems and methods for generating and electronically steering an orbital angular momentum (OAM) electromagnetic beam are disclosed. A system can include a beamforming device generating beamforming signals modulated based on OAM-mode-related phase shifts, and a beamsteering device generating beamsteering signals by modulating the beamforming signals based on steering-angle-related phase shifts. The system can also include an antenna fed with the beamsteering signals for emitting the OAM beam. The antenna includes at least one slotted radial waveguide partitioned into sectors, where each sectors receive a respective beamsteering signal. In some embodiments, the radial extent of the sector partitions is less than that of the cavity. In some embodiments, multiple sectorized waveguides are provided whose radiating surfaces are coplanar to provide the antenna with a flat radiating surface. The disclosed embodiments can provide electronic steering of OAM beams with improved radiation performances in terms grating / side lobe suppression and impedance matching.

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.

A low-profile, high-power microwave (HPM) antenna system that includes an antenna array formed of a plurality of low-profile dipole cells; an enclosure to surround the antenna array; and a radome cover disposed on top of the enclosure.

An apparatus for steering a beam includes a beamforming device for receiving electromagnetic (EM) waves and outputting, based on the received EM waves, EM waves having one or more orbital angular momentum (OAM) modes. The apparatus further includes phase shifters for modulating, based on one or more steering patterns, the EM waves outputted by the beamforming device. The apparatus further includes a radial waveguide divided into multiple waveguide sectors. Each waveguide sector has an input connected to one of the phase shifters, and one or more slot line antennas for transmitting the EM waves modulated by the phase shifter connected to the input, wherein the one or more slot line antennas are oriented differently to the one or more slot line antennas of each other waveguide sector.

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.

The invention relates to the technical field of electronics, and discloses a radial waveguide power synthesis amplifier which comprises two radial waveguide power synthesis distributors and a plurality of power units, the two radial waveguide power synthesis distributors are arranged in parallel at intervals, and waveguide cavities are formed in the radial waveguide power synthesis distributors. A center feed probe and a plurality of branch feed probes are arranged in the waveguide cavity, and a plurality of first connectors which are coaxially and correspondingly connected with the branch feed probes one by one are arranged on the opposite surfaces of the two radial waveguide power synthesis distributors respectively; the plurality of power units are connected between the two radial waveguide power synthesis distributors at intervals along the circumferential direction, one end of each power unit is connected with one first connector on one radial waveguide power synthesis distributor, and the other end of each power unit is connected with one first connector on the other radial waveguide power synthesis distributor. The power capacity is large, the insertion loss is small, and the use flexibility is high.

The present invention provides a hybrid three-power-division filter, which relates to the technical field of radio frequency microwave circuits, and comprises: a coaxial line, which is used to transmit an input signal along a first direction; three output rectangular waveguides are arranged at equal angles along the radial direction of the coaxial line, and are used to output the signal along a second direction; a dielectric substrate, which is assembled on the cross section of the coaxial line and the E-plane of the three rectangular waveguides, and the dielectric substrate is composed of a laid coaxial probe, an impedance conversion circuit, a microstrip bandpass filter and a microstrip-waveguide transition conversion circuit; the present invention provides a structural mode of combining a coaxial line planar probe with a rectangular waveguide E-plane dielectric loading circuit to realize a circuit structure of a hybrid coaxial-radial waveguide with three-way power division and outputting signals in a specific frequency band.

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.