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Basic unit, metasurface and arrival angle estimation method based on information metasurface

A basic unit and metasurface technology, applied to electrical components, antennas, etc., to achieve fast and accurate results, simple principles, and low cost

Pending Publication Date: 2021-06-15
JIANGSU EMETASPACE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control signals of traditional tunable metasurfaces are all static, or changing at very low frequencies, so it is a linear device that can only regulate some linear characteristics of electromagnetic waves, such as amplitude, phase, polarization, etc.

Method used

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  • Basic unit, metasurface and arrival angle estimation method based on information metasurface
  • Basic unit, metasurface and arrival angle estimation method based on information metasurface
  • Basic unit, metasurface and arrival angle estimation method based on information metasurface

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Embodiment Construction

[0053] like figure 1 Shown is an integrated method of angle-of-arrival estimation and electromagnetic control based on information metasurface. This method can quickly and accurately estimate the angle of arrival while controlling the incident electromagnetic wave through the information metasurface in the time-space-frequency domain. .

[0054] The information metasurface is formed by periodic arrangement of the same basic unit, and multiple basic units are formed into an array through a feed network, similar to a planar reflection array, and its unit reflection coefficient can be adjusted in real time through an external voltage control signal.

[0055] Basic unit 1 used in the present invention has a structure such as figure 2 As shown, it is divided into three layers: the upper surface structure (such as figure 2 a), dielectric substrate and lower surface structure (such as figure 2 b). The upper surface structure is composed of a metal strip 11 and a rectangular pa...

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Abstract

The invention relates to a basic unit. A unit structure is characterized in that the basic units are periodically arranged to form an information metasurface, a switching diode in each basic unit can be controlled by an external circuit, and then different electromagnetic responses are presented; the electromagnetic response states of the basic units can be arranged and distributed in a spatial dimension according to a spatial coding sequence, and further can be periodically circulated in a time dimension according to a time coding sequence; by designing a corresponding space-time coding matrix, the information metasurface can simultaneously regulate and control electromagnetic waves in a space domain and a frequency domain; and through carrying out signal analysis on the regulated electromagnetic waves, an arrival angle of the incident electromagnetic waves can be estimated, an arrival angle estimation and electromagnetic regulation integrated method based on the information metasurface is formed, and an incident angle of the electromagnetic waves irradiating the information metasurface can be independently regulated while the incident angle is quickly estimated in real time.

Description

technical field [0001] The invention belongs to the technical field of artificial electromagnetic materials, and in particular relates to a basic unit, a metasurface and an information metasurface-based method for estimating the angle of arrival. Background technique [0002] A new type of artificial electromagnetic surface, also known as a metasurface, can control the amplitude, phase, polarization, beam, orbital angular momentum and other parameters of electromagnetic waves by designing its unit characteristics and spatial arrangement, so as to realize the deflection, focusing and absorption of electromagnetic energy And other functions, can be used in antenna, imaging and other fields. By introducing tunable technology, tunable metasurfaces that can control the parameters of electromagnetic waves in real time can be designed. The control signals of traditional tunable metasurfaces are static or change at very low frequencies, so they are linear devices that can only regu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/14H01Q15/18H01Q15/00
CPCH01Q15/14H01Q15/18H01Q15/00
Inventor 苗龙戴俊彦姜汝丹杨林军程强崔铁军
Owner JIANGSU EMETASPACE TECH CO LTD
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