Switchable broadband multifunctional metamaterial absorber/polarization converter

A multi-functional, metamaterial technology, applied to electrical components, antennas, etc., can solve problems such as narrow working bandwidth and low working efficiency

Active Publication Date: 2021-05-25
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current multifunctional absorber / polarization converter can only switch between the absorption function and the linear polarization conversion function, or switch between the linear polarization conversion function and the circular polarization conversion function, and its working bandwidth is narrow or work efficiency is not high

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  • Switchable broadband multifunctional metamaterial absorber/polarization converter
  • Switchable broadband multifunctional metamaterial absorber/polarization converter
  • Switchable broadband multifunctional metamaterial absorber/polarization converter

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Embodiment Construction

[0029]In order to make the objects, technical solutions and results of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are intended to illustrate the invention and are not intended to limit the invention.

[0030]Such asFigure 1 to 5 As shown, a switchable broadband multi-function ultra-material absorber / polarization converter of the present invention includes a resonant pattern layer 1 provided from top to bottom, a first dielectric layer 2, a graphene pattern layer 3, and The diaphragm layer 4, the continuous graphene layer 5, the third dielectric layer 6, the bottom metal plate 7;

[0031]The resonance pattern layer 1 is arranged by a strip-shaped resonator period consisting of several metal block 9 and the photosensilate 8, and the photosensilate 8 is a square-sensitive silicon block, and the metal block 9 is a rectang...

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Abstract

The invention belongs to the field of metamaterial absorbers and polarization converters, and particularly relates to a switchable broadband multifunctional metamaterial absorber / polarization converter which comprises a resonance pattern layer, a first dielectric layer, a graphene pattern layer, a second dielectric layer, a continuous graphene layer, a third dielectric layer and a bottom metal plate which are sequentially arranged from top to bottom. The resonance pattern layer is formed by periodically arranging strip-shaped resonators which are formed by alternately arranging a plurality of metal blocks and photosensitive silicon blocks; and the graphene pattern layer is composed of a single-layer carbon atom graphene plate and a plurality of periodically arranged structural units etched on the single-layer carbon atom graphene plate, and each structural unit is composed of four open semicircular annular grooves connected by a cross-shaped groove. The broadband electromagnetic wave conversion device can work in three modes of broadband perfect absorption of electromagnetic waves, broadband linear polarization wave conversion and broadband circular polarization wave conversion, and can be freely regulated and controlled.

Description

Technical field[0001]The present invention belongs to the field of ultra material absorber and polarized converter, and more particularly to a switchable broadband multifunctional super material absorber / polarized converter.Background technique[0002]Super material is an artificial composite electromagnetic material having a cyclical structure due to its unique electromagnetic response, has caused extensive research interest in recent years and has achieved rapid development. Super material has a very wide application, has been reported with super lens imaging, graphene biosensing, electromagnetic detection, and stealth technologies.[0003]In 2008, Landy et al. Based on open resonant ring - metal wire structure designed the first super material perfect absorber to achieve a single frequency section perfect absorption effect. After that, many different structures and absorbs of different materials are successively proposed, and the absorption operating frequency band is expanded to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/24
CPCH01Q15/0086H01Q15/242
Inventor 杨荣草李照华王佳云张文梅
Owner SHANXI UNIV
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