Globally space-tunable six-beam high-directional angle reflector antenna based on metasurface

Abstract

The invention provides a super-surface based adjustable six-wave-beam high-directional angled reflector antenna in global space to realize multi-wave-beam directional radiation in global space. Wave-beam pointing is dynamically adjustable. The antenna comprises two opposite three-wave-beam angled reflector antenna units, and each antenna unit comprises a dielectric plate with a metal bottom plateprinted on one side and three right-angle isolation plates arranged in a star-shaped manner. The central position of the other side of each dielectric plate is provided with a rotation shaft perpendicular to the surface of the plate. The dielectric plate and the three right-angle isolation plates of each antenna unit form three three-sided angled structures, and a spherical wave feed source is arranged outside the aperture surface of each angled structure. Each right-angle isolation plate includes a right-angle metal plate and right-angle dielectric plates attached to two sides of the right-angle metal plate. Symmetrical metal ring structures arranged periodically are printed on surfaces of the dielectric plates forming the three-sided angled structures and on surfaces of the six right-angle dielectric plates. The dimensions of the symmetrical metal ring structures are determined by coordinate values of positions where the symmetrical metal ring structures are located, coordinate values of the spherical wave feed sources and the incident angles of the electromagnetic waves.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to an angle reflector antenna, in particular to a metasurface-based global space-adjustable six-beam high-directional angle reflector antenna, which can be used in the fields of wireless communication and radar. [0002] technical background [0003] Multi-beam antenna technology can cover a wide range of transmission areas with high gain. The demand for satellite communications, radar reconnaissance, electronic countermeasures, and microwave transmission continues to expand. It has become the next-generation satellite antenna, multi-target tracking radar and global electronic countermeasures. important direction of development. [0004] Multi-beam antennas are generally divided into three categories according to different beamforming principles, namely planar phased array antennas, reflector antennas and lens antennas. For highly directional multi-beam antennas, antenna design and b...

AI Technical Summary

Problems solved by technology

However, the existing design of multi-beam antennas with angled reflectors does not involve dynamic and adjustable scanning of the entire space.

In 2015, the application publication number was CN 104682012A, and the patent application titled "High-gain low-scattering angle reflective surface loaded with gradient corrugation" disclosed a high-gain low-scattering angle reflective surface loaded with gradient corrugation. A set of metal corrugated structures with gradual changes in height is loaded on the corner reflective panel, which simply and effectively calibrates the spherical wave of the feed source to emerge as a plane wave, thereby effectively improving the radiation gain and greatly reducing the backscattering characteristics of the antenna, but the invention only works In the half-space area, and the beam pointing cannot be dynamically adjusted

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