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A Vortex-Type Multilayer Metasurface Array Antenna

An array antenna and metasurface technology, applied in the field of communication, can solve the problems of reducing electromagnetic wave vortex effect, reducing antenna beam gain, disadvantage of wireless communication, etc. Effect

Active Publication Date: 2021-08-10
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technical solution can realize the phase difference between each unit through the unit structure of the spiral structure to form a vortex electromagnetic wave, but this technical solution needs to accurately arrange the unit structure in a helical shape, which makes its production more troublesome; and the electromagnetic wave beam will It has a large diffusion effect, which leads to the reduction of antenna beam gain and the vortex effect of electromagnetic waves, which is extremely unfavorable to wireless communication

Method used

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  • A Vortex-Type Multilayer Metasurface Array Antenna
  • A Vortex-Type Multilayer Metasurface Array Antenna
  • A Vortex-Type Multilayer Metasurface Array Antenna

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Embodiment 1

[0025] Embodiment 1: a kind of vortex-type multilayer metasurface array antenna, as attached figure 1 As shown, the array antenna is an array phase plate 6 composed of more than two phase shifting units 15; figure 2 As shown, the phase shifting unit 15 includes an upper dielectric layer 1 and a lower dielectric layer 2 connected up and down. The dielectric constants of the upper dielectric layer 1 and the lower dielectric layer 2 are both 2.0, silicon dioxide can be used, and the thickness is uniform. 0.8mm, the upper dielectric layer 1 and the lower dielectric layer 2 are squares with side length p=3mm; the four sides of the upper dielectric layer 1 and the lower dielectric layer 2 are flush; the upper surface of the upper dielectric layer 1 1. The connecting surface of the upper dielectric layer 1 and the lower dielectric layer 2, and the bottom surface of the lower dielectric layer 2 are all provided with a metal patch 3; the thickness of the metal patch 3 is 0.035mm, and ...

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Abstract

The invention discloses a vortex-type multilayer metasurface array antenna. The array antenna is an array phase plate composed of more than two phase shifting units; the phase shifting unit includes an upper dielectric layer and a lower dielectric layer connected up and down. The upper surface of the upper dielectric layer, the connection surface between the upper dielectric layer and the lower dielectric layer, and the bottom surface of the lower dielectric layer are all provided with metal patches; the metal patch is composed of an outer ring and an inner ring; the The phase plate of the array divides the first quadrant to the eighth quadrant counterclockwise. The inner radius of the outer ring of the metal patch in each quadrant is the same, and the inner radius of the outer ring decreases from the first quadrant to the eighth quadrant. . The invention has a very superior transmission vortex effect of the incident wave, the transmission efficiency can reach more than 70%, and has a good energy transmission efficiency; in addition, the invention has a simple structure, a high utilization rate per unit area of ​​the phase shifting unit, and has a manufacturing process The advantages of simplicity and low cost.

Description

technical field [0001] The invention relates to a vortex-type multilayer metasurface array antenna, which belongs to the communication field. Background technique [0002] The angular momentum of electromagnetic waves includes spin angular momentum and orbital angular momentum. As an important physical quantity in physics, orbital angular momentum (OAM) has rapidly promoted the new development of nonlinear optics, quantum optics, atomic optics and astronomy since it was confirmed by Allen et al. in 1992. Different from the spin angular momentum, the orbital angular momentum is associated with the helical phase wave front, which can theoretically take infinite values ​​and be orthogonal to each other. Electromagnetic waves carrying orbital angular momentum are different from ordinary plane waves. The center intensity of the beam is zero, and the phase wave front presents a spiral characteristic, also known as vortex electromagnetic waves. The vortex electromagnetic wave use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/06H01Q21/22H01Q1/38H01P1/18
Inventor 徐弼军孙志超闫梦瑶童鑫
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY