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Terahertz-band metamaterial with three resonance absorption peaks

A technology of metamaterials and resonance absorption, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of poor consistency of double resonance amplitudes, and achieve the effect of low price and high application value

Inactive Publication Date: 2012-04-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The use of Metamaterials to make multi-pass devices was still in March 2004. W.J.Padilla et al. first mentioned the multi-resonance Metamaterial structure in the terahertz frequency band in the literature. It belongs to the ELC structure and is a double resonance. This structure is relatively simple and easy to manufacture. But the consistency of the double resonance amplitude is poor

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  • Terahertz-band metamaterial with three resonance absorption peaks
  • Terahertz-band metamaterial with three resonance absorption peaks
  • Terahertz-band metamaterial with three resonance absorption peaks

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Embodiment Construction

[0016] A terahertz-band metamaterial with triple-resonant absorption peaks, such as figure 1 , 3 As shown, it includes a substrate and metal resonant units arranged periodically on the surface of the substrate. The metal resonant unit is an asymmetric pattern structure formed by metal film lines with a line width of d; the asymmetric pattern structure includes an electric split ring resonator formed by connecting two identical single-open metal rings in the middle, and the electric The width of the opening of the split ring resonator is w 2 , the distance is g 2 ; The asymmetric pattern structure also includes two single-slit metal rings connected back to the long sides of the electrical split ring resonator, wherein the width of the opening of a single-slit metal ring is (d+w 1 ), the opening spacing is g 1 , the width of the opening of the other single-opening metal ring is the line width d of the metal film, and the opening spacing is g 3 , and g 3 > g 1 ; The length...

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Abstract

The invention relates to a terahertz-band metamaterial with three resonance absorption peaks, belonging to the technical field of electromagnetic function materials. The terahertz-band metamaterial comprises a substrate and metal resonance units periodically arranged on the surface of the substrate. Each metal resonance unit comprises an electric snap ring resonator, the middle part of the electric snap ring resonator is formed by oppositely connecting two same single metal snap rings, and each metal resonance unit further comprises two single metal snap rings connected with long edges of twosides of the electric snap ring resonator back to back. In each metal resonance unit, the central electric snap ring resonator is a resonator of a symmetric closed structure, and two side snap rings are resonators of asymmetric open structures, thus a three-resonance structure is realized. The terahertz-band metamaterial with the three resonance absorption peaks, provided by the invention, has three very obvious absorption peaks in the terahertz band, and the three absorption peaks are distinguished clearly. The terahertz-band metamaterial with the three resonance absorption peaks, provided by the invention, can be processed by a micro-electronics processing technique with low cost, and has very large potential application value in the field of terahertz-band communication (including switches, modems, filters and the like).

Description

technical field [0001] The invention belongs to the technical field of electromagnetic functional materials, and relates to metamaterials in the terahertz band. Background technique [0002] Terahertz (Terahertz, THz) waves generally refer to electromagnetic waves with frequencies ranging from 0.1 THz to 10 THz. In terms of frequency, this band is located between millimeter waves and infrared light, and belongs to the far-infrared band; in terms of energy, it is between electrons and photons. Due to its unique frequency and energy characteristics, terahertz electromagnetic waves have shown broad potential in the fields of material analysis, determination of biological macromolecules, radar, remote sensing, homeland security, high-density data communication and transmission, atmospheric and environmental monitoring, and medical diagnosis. application potential and value. [0003] Metamaterials refer to an artificial medium formed by periodically or non-periodically arrangin...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 张雅鑫乔绅凌伟刘盛纲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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