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A Programmable Metasurface-Based User Tracking and Wireless Digital Transmission Method

A digital transmission and metasurface technology, applied in radio transmission systems, transmission monitoring, transmission systems, etc., can solve the problems of low integration and flexibility, high cost, and complexity of communication systems, and achieve increased integration and flexibility. efficiency, reducing complexity and cost

Active Publication Date: 2022-06-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a user tracking and wireless digital transmission method based on a programmable metasurface, so as to solve the technical problems of high complexity, high cost, low integration and flexibility of the communication system constructed by the existing method

Method used

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  • A Programmable Metasurface-Based User Tracking and Wireless Digital Transmission Method
  • A Programmable Metasurface-Based User Tracking and Wireless Digital Transmission Method
  • A Programmable Metasurface-Based User Tracking and Wireless Digital Transmission Method

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Embodiment Construction

[0036] In order to better understand the purpose, structure and function of the present invention, a user tracking and wireless digital transmission method based on a programmable metasurface of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] Metasurfaces are reflective metasurfaces that include a large number of binary cells, which are represented as state "1" or state "0" according to the digital encoding of the programmable metasurface. Among them, the gray and yellow patches represent binary cells in different states. If a cell changes from state "1" to state "0", its reflection phase changes by 180°. By designing specific digital codes, programmable metasurfaces can shape their far-field patterns over the airspace. By dynamically switching the sequence of digital codes, the programmable metasurface can also tune the phase of the far field in the temporal domain.

[0038] The fabricated programmable me...

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Abstract

The invention discloses a user tracking and wireless digital transmission method based on a programmable metasurface, wherein the metasurface is a reflective metasurface, and the metasurface is composed of a large number of sub-wavelength binary reconfigurable units. By programming these binary units, the metasurface can use different digital radiation phases to steer the beam radiated from the horn antenna to a specific direction. Utilizing this capability, the metasurface can perform user tracking through beam steering and phase modulation coded signal transmission on the directional beam. Due to its simple structure and flexible control characteristics, this method has broad application prospects in building integrated radar communication systems and identifiable electronic systems.

Description

technical field [0001] The invention belongs to the field of wireless communication systems, in particular to a user tracking and wireless digital transmission method based on a programmable metasurface. Background technique [0002] As a thin-layer version of metamaterials, metasurfaces can manipulate the visualization properties of electromagnetic waves on the surface of a medium. For waves propagating along surfaces, metasurfaces can modulate the surface impedance to form planar functional devices or radiation leaky waves. For the reflection or refraction of waves on the surface, the metasurface can adjust the reflection or refraction coefficient to achieve different functions. From different perspectives, a variety of metasurfaces have been proposed one after another, such as Huygens metasurfaces, impedance metasurfaces, holographic metasurfaces, nonlinear metasurfaces, and programmable metasurfaces. Among them, the programmable metasurface is a dynamic metasurface con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08H04B17/318
CPCH04B7/0617H04B7/086H04B17/318
Inventor 万向黄梓艾王嘉伟
Owner SOUTHEAST UNIV