A Metasurface Concave Mirror with Simultaneous Control of Polarization State and Beam Pointing

Abstract

The invention provides a super surface concave reflecting mirror for simultaneously adjusting and controlling the polarization state and beam direction. The super surface concave reflecting mirror mainly solves the problem that existing electromagnetic wave regulating and controlling devices cannot simultaneously adjust and control the polarization state and beam direction on concave surfaces. Thesuper surface concave reflecting mirror includes a carrier and a super surface attached to the cylindrical concave surface of the carrier; the super surface is formed by periodically arraying m*n super surface units, and each super surface unit comprises a dielectric plate, a metal resonant ring patch and a metal floor; each metal resonant ring patch is of a rectangular ring structure, an included angle between either side of each metal resonant ring patch and the direction of an electric field of incident ray-polarized electromagnetic waves is 45 degrees, and the metal resonant ring patchesare used for generating two electric field components including the main polarization and the cross polarization with a phase difference of 90 degrees. In addition, by adjusting the size of the two sides of each rectangular ring structure, the polarization conversion efficiency and the reflection phase can be adjusted and controlled. Conversion of the linearly polarized electromagnetic waves intoother arbitrary polarized electromagnetic waves can be achieved, and at the same time adjustment and control of the beam direction are achieved. The super surface concave reflecting mirror can be usedfor microwave communication and radar detection systems.

Description

technical field [0001] The invention belongs to the technical field of microwave communication, and in particular relates to a supersurface concave reflector which can be regulated simultaneously with polarization state and beam pointing, which can be used in microwave communication and radar detection systems. [0002] technical background [0003] In wireless communication systems, polarization state and propagation direction are the two most basic parameters for microwave communication using electromagnetic waves. For different wireless communication systems, the requirements for the polarization state and transmission direction of electromagnetic waves are different. For example, omnidirectional linearly polarized electromagnetic waves are generally used for communication in mobile phone wireless communication networks, and highly directional circular polarized electromagnetic waves are generally used for ground and satellite communications. Polarized electromagnetic wave...

AI Technical Summary

Problems solved by technology

However, it is difficult to control the electromagnetic wave by using a concave surface to convert the polarization into the same state at different positions, and it is even more difficult to control the direction of the electromagnetic wave at the same time. Therefore, the application range of the existing electromagnetic wave polarization conversion device and beam pointing control equipment is difficult Generalized to Concave Surfaces for Loading

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