6 results about "Feed horn" patented technology

The application relates to a large-diameter high-power pseudo-Bessel beam generation method and a generation device, and belongs to the technical field of communication. The method comprises the following steps: S100, an electromagnetic beam output by a feed horn is propagated to a first reflecting surface, and a target pseudo-Bessel beam is reversely propagated to a second reflecting surface; S200, the electromagnetic beam is propagated to the second reflecting surface through the first reflecting surface, a phase difference on the second reflecting surface is obtained, and a deformation variable of the second reflecting surface is updated; S300, the target pseudo-Bessel beam is propagated to the first reflecting surface through the second reflecting surface, a phase difference on the first reflecting surface is obtained, and a deformation variable of the first reflecting surface is updated; and S400, steps S100 to S300 are repeated until the relative field distribution of the output electromagnetic beam and the target pseudo-Bessel beam reaches a stable state, and a large-diameter high-power pseudo-Bessel beam is obtained. The application can solve the technical problems of existing media loss and limited power capacity.

The application provides a kind of transmission RIS transceiver downlink multi-stream communication system and method, comprising: transmission RIS transceiver module: including intelligent controller and transmission RIS panel;Intelligent controller generates corresponding control signal, changes the phase of transmission wave in RIS unit by control line, sends to user module;Loudspeaker antenna module: the information of intelligent controller module is loaded into the carrier of emission and sent to user module, and the information of transmission RIS transceiver module is loaded into the carrier of emission and radiated;User module: after receiving the signal sent by loudspeaker antenna module, harmonic extraction, symbol recovery and demodulation operation are carried out.The architecture proposed in the application can realize multi-stream communication only by equipping a radio frequency chain of feed horn antenna, and is a more low-power and low-cost solution.The architecture proposed in the application considers that each transmission unit is limited by its transmission capacity, and is more novel.

Corrective meta surface lens is used to reduce the illumination and spill-over losses and improve the overall efficiency of a parabolic antenna when is horn-mounted, and / or top-mounted, and / or deposited directly on the frontal reflector surface of the parabolic antenna. For the horn-mounted model, a meta surface lens is placed in front of or in the aperture of the feed horn to reduce side lobe level, which results in lower parabolic antenna spill-over losses and overall efficiency improvement by more than 40% (1.5 dB). For the top-mounted model, the meta surface lens is mounted on top of (or above) the parabolic reflector, which results in reduction in illumination losses, and greater than 70% (2.5 dB) efficiency. The meta surface lens has a wideband response, is lightweight and has a lattice structure which makes it a great candidate for withstanding wind forces.

The application discloses a hole bottom processing structure of a feed horn, and relates to the technical field of deep space exploration, weather measurement and satellite remote sensing.The hole bottom processing structure comprises a horn body and a ring-shaped assembly part, and a plurality of corrugated grooves with different diameters are formed in the horn body; a mounting block is arranged on one side of the horn body close to the hole bottom, a mounting cavity is formed in the mounting block, and one side of the mounting cavity is connected with the inside of the horn body. The ring-shaped assembly part is mounted in the mounting cavity, and the ring-shaped assembly part comprises first circular blocks and second circular blocks; five first circular blocks are arranged, the edges of adjacent first circular blocks are attached to each other, and the first circular blocks and the second circular blocks are fixed between the inside of the mounting cavity and the side wall of the mounting cavity through laser welding. The application avoids the problem that a tool cannot be deeply inserted into the hole bottom for processing due to the narrow hole in the horn by designing a split ring-shaped assembly part, and the effect of impedance mutation caused by uneven groove depth is eliminated by using a central hole with different diameters to form a continuous and uniform corrugated groove.

An unitary one-piece construction feed for a high frequency band antenna, the feed including: a feed horn; and a polarizer comprising a void and multiple sets of ridges disposed in the void, wherein the polarizer is in direct contact with the feed horn and the unitary one-piece construction feed is capable of operating with a carrier signal ranging across one or two consecutive bands selected from Ku, K, Ka and Q bands, for example, from 17.3 GHz to 31 GHz.

The application relates to the technical field of antennas, in particular to a 3D printing linear polarization conversion circular polarization scanning antenna, which comprises a phase gradient metasurface, a linear polarization conversion circular polarization metasurface lens and a feed horn antenna arranged in a coaxial line from top to bottom and not in contact with each other in sequence, the phase center of the feed horn antenna is located on the focal point of the linear polarization conversion circular polarization metasurface lens, and the phase gradient metasurface and the linear polarization conversion circular polarization metasurface lens rotate in opposite directions along the same axis. The application realizes two-dimensional beam control through the phase gradient metasurface and the linear polarization conversion circular polarization metasurface lens, so that the application has good beam scanning performance and high electromagnetic wave conversion efficiency, has the characteristics of high gain and low scanning loss, and is formed by adopting the 3D printing technology, so that the production cycle and cost are greatly shortened, precise control of the antenna radiation mode can be realized, and the application can be widely applied in the fields of communication, radar and satellite.