A switchable broadband multifunctional metamaterial absorber/polarization converter

A multifunctional, metamaterial technology, applied in antennas, electrical components, etc., can solve problems such as low work efficiency and narrow working bandwidth

Active Publication Date: 2022-03-18
SHANXI UNIV
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  • Abstract
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  • 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

Method used

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  • A switchable broadband multifunctional metamaterial absorber/polarization converter
  • A switchable broadband multifunctional metamaterial absorber/polarization converter
  • A switchable broadband multifunctional metamaterial absorber/polarization converter

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Embodiment Construction

[0029] In order to make the object, technical solution and results of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Such as Figure 1 to Figure 5 As shown, a switchable broadband multifunctional metamaterial absorber / polarization converter of the present invention includes a resonant pattern layer 1, a first dielectric layer 2, a graphene pattern layer 3, a first Second dielectric layer 4, continuous graphene layer 5, third dielectric layer 6, bottom metal plate 7;

[0031] The resonant pattern layer 1 is formed by a periodic arrangement of bar-shaped resonators composed of several metal blocks 9 and photosensitive silicon blocks 8 arranged alternately, the photosensitive silicon block 8 is a square photose...

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Abstract

The invention belongs to the field of metamaterial absorbers and polarization converters, in particular to a switchable broadband multifunctional metamaterial absorber / polarization converter, comprising a resonant pattern layer and a first dielectric layer arranged in sequence from top to bottom , a graphene pattern layer, a second dielectric layer, a continuous graphene layer, a third dielectric layer, and a metal plate at the bottom; the resonant pattern layer is formed by a periodic arrangement of strip resonators composed of several metal blocks and photosensitive silicon blocks arranged alternately ; The graphene pattern layer is composed of a single-layer carbon atom graphene plate and several periodic structural units etched on the single-layer carbon atom graphene plate, each structural unit is connected by a cross-shaped groove It consists of four open semicircular grooves. The invention can work in three modes: broadband perfect absorption of electromagnetic waves, broadband linear polarized wave conversion and broadband circular polarized wave conversion, and can be adjusted freely.

Description

technical field [0001] The invention belongs to the field of metamaterial absorbers and polarization converters, in particular to a switchable broadband multifunctional metamaterial absorber / polarization converter. Background technique [0002] Metamaterials, which are artificial composite electromagnetic materials with periodic structures, have attracted extensive research interest and achieved rapid development in recent years due to their unique electromagnetic responses. Metamaterials have a very wide range of applications, such as superlens imaging, graphene biosensing, electromagnetic detection and stealth technology have been reported so far. [0003] In 2008, Landy et al. designed the first metamaterial perfect absorber based on the split resonator ring-metal wire structure to achieve a single-band perfect absorption effect. After that, many absorbers with different structures and different materials were proposed one after another, and the absorption working freque...

Claims

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Application Information

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Patent Type & Authority Patents(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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