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Multilayer annular terahertz metamaterial wave absorber

A technology of terahertz and metamaterials, which is applied in the field of multi-layer annular terahertz metamaterial absorbers and terahertz metamaterial absorbers, to achieve the effects of wide application range, avoiding ohmic loss and heat loss, and flexible design

Inactive Publication Date: 2019-05-31
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, electromagnetic metamaterial absorbers with single band and multiple bands can only have better absorption effect in narrower terahertz bands.

Method used

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  • Multilayer annular terahertz metamaterial wave absorber
  • Multilayer annular terahertz metamaterial wave absorber
  • Multilayer annular terahertz metamaterial wave absorber

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Embodiment Construction

[0027] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] A multi-layer annular terahertz metamaterial absorber can broaden the absorption bandwidth of the absorber by coating the surface of the resonant unit on each layer of dielectric substrate with conductive carbon paste, and realize the ultra-high performance of the absorber in the terahertz band broadband absorption. The terahertz metamaterial wave absorber is formed by periodic arrangement of structural units.

[0029] A kind of multi-layer annular terahertz metamaterial wave absorber proposed in this embodiment, its structure is as follows Figures 1 to 6 As shown, it is composed of the bottom reflection plate 7, the first to third layers of dielectric substrates 4, 5, 6, and the first to third layers of resonant units 1, 2, 3 coated with high resistance surfaces on the dielectric substrates of each layer.

[0030] The coat...

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Abstract

The invention discloses a multilayer annular terahertz metamaterial wave absorber comprising a bottom metal reflector plate and a multilayer structure above the metal reflector plate and characterizedin that the multilayer structure comprises three dielectric substrates and resonant units above respective dielectric substrates, wherein each resonant unit is coated with a high-resistance surface.The wave absorber has a good absorption effect on TE polarized waves and TM polarized waves. By coating the resonant unit above each dielectric substrate with the high-resistance surface, the wave absorber can achieve ultra-wideband wave absorption in the terahertz band. The multilayer annular terahertz metamaterial wave absorber avoids metal ohmic loss and heat loss by coating the resonant unitsabove the dielectric substrates with the high-resistance surfaces, so as to be suitable for operating in the light wave and terahertz band. The multilayer annular terahertz metamaterial wave absorberis simple in structure, flexible in design and powerful in functions.

Description

technical field [0001] The invention relates to a terahertz metamaterial wave absorber, in particular to a multi-layer annular terahertz metamaterial wave absorber, which belongs to the field of radio communication and terahertz devices. Background technique [0002] Metamaterials are artificially designed and processed composite materials. The specific physical properties of this material depend on the intrinsic properties and sub-wavelength structures of the constituent materials. These peculiar physical properties often cannot be passed through the intrinsic physical properties of existing natural materials. properties acquired. Metamaterial is not a new material substance, but a recombination design of existing natural substances, resulting in unique physical properties, which has brought a ideological transformation to the traditional way of thinking about materials and greatly improved People's new understanding of materials. Electromagnetic metamaterials, as an emer...

Claims

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Application Information

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IPC IPC(8): H01Q15/00H01Q17/00G02B1/00G02B5/00
Inventor 章海锋张浩杨靖陈玉清
Owner NANJING UNIV OF POSTS & TELECOMM
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