Four-resonance terahertz band metamaterial based on double ELC asymmetric coupling structure

An asymmetric coupling, terahertz technology, applied in antennas, electrical components, etc., can solve the problems of the second resonance peak resonance strength and bandwidth weakening, and achieve the effects of low processing cost, high controllable precision, and wide bandwidth

Active Publication Date: 2019-02-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The metamaterial has two resonant peaks. Compared with the combination before, the resonant intensity and bandwidth of the first resonant peak (-10dB) are improved, but the resonant strength and bandwidth of the second resonant peak are obviously weakened

Method used

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  • Four-resonance terahertz band metamaterial based on double ELC asymmetric coupling structure
  • Four-resonance terahertz band metamaterial based on double ELC asymmetric coupling structure
  • Four-resonance terahertz band metamaterial based on double ELC asymmetric coupling structure

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Embodiment

[0047] The substrate dielectric substrate material of this embodiment adopts a single crystal quartz crystal with a crystal orientation of 0001, a dielectric constant of about 4.41, a magnetic permeability of 1, a loss tangent of about 0.0004, and a thickness h of 170 m; the metal resonant structure The line material used has a conductivity of 3.72×10 7 S / m, metal aluminum with a thickness h1 of 1m.

[0048] Such as image 3 As shown, the size parameters of the metal structure of the resonance unit are: l=360 μm, w=180 μm, l 1 = 220 μm, l 2 = 100 μm, l 3 = 20 μm, l 4 = 60 μm, l 5 = 100m, g = 80μm, w 1 = 40 μm, w 2 =60μm, w 3 =20μm, l=170μm, P x = 400 μm, P y = 200 μm.

[0049] The four-resonance terahertz band metamaterial based on the double Electric-LC asymmetric coupling structure is designed in the three-dimensional electromagnetic simulation software HFSS (High Frequency Structure Simulator) using the finite element method. Its simulation results are shown in ...

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Abstract

A four-resonance terahertz band metamaterial based on a double ELC asymmetric coupling structure belongs to the technical field of electromagnetic wave full vector transmission control devices. The invention includes a substrate dielectric substrate and a metal structure layer arranged on the surface of the substrate dielectric substrate. There are M*N resonant units with the same structure periodically arranged on the metal structure layer. M and N are natural numbers and M≥2, N≥2. It is characterized in that each resonant unit has two openings and different lengths of metal arms. The resonator combination constitutes, and the resonator is determined according to the following conditions: in the simulation state of a single resonator, the first resonator has three resonance peaks, and the second resonator has two resonance peaks; In a state, the resonance unit has four resonance peaks; the resonance peaks are signal peaks with a transmittance lower than -15dB. The present invention utilizes micro-nano manufacturing technology for processing, and compared with realizing the terahertz reflective polarizer by ion etching, electro-optic crystal and other structures, the present invention has simple structure, small volume, low processing cost and high controllable precision.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave full-vector transmission control devices, and relates to a transmissive terahertz four-resonance metamaterial. Background technique [0002] With the rapid development of wireless communication and high-precision radar technology, the demand for large data file transmission and space high-speed network interconnection is increasing, and there is an urgent need for a new high-speed wireless communication system that can achieve data transmission rates above Tb / s. Terahertz waves have abundant spectrum resources (frequency ranges from 0.1THz to 10THz), and can achieve a data transmission rate of more than 100Gb / s with only appropriate bandwidth efficiency. Compared with millimeter wave communication and optical communication, terahertz wireless communication system has irreplaceable unique advantages, and has broad application prospects in the fields of high-speed short-distance wireles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0026
Inventor 兰峰杨梓强史宗君石明磊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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