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A Design Method for Tunable Metasurfaces Based on Thickness and Dimension Variation

A technology of honeycomb structure and size change, applied in design optimization/simulation, welding equipment, laser welding equipment, etc., can solve the problems of single and fixed working frequency, and achieve the effect of high preparation efficiency, wide application prospect and effective working frequency

Active Publication Date: 2022-03-29
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of single and fixed operating frequency in the existing metasurface absorbing materials, and provides a method for designing and preparing a honeycomb structure tunable metasurface based on changes in thickness and size

Method used

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  • A Design Method for Tunable Metasurfaces Based on Thickness and Dimension Variation
  • A Design Method for Tunable Metasurfaces Based on Thickness and Dimension Variation
  • A Design Method for Tunable Metasurfaces Based on Thickness and Dimension Variation

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1 The design and preparation method of the honeycomb structure tunable metasurface based on thickness and size changes in this example is carried out according to the following steps:

[0025] Step 1, 120ml polyvinyl butyral (PVB) / ethanol (C 2 h 6 O) 10wt.% solution, 12ml tributyl phosphate (TBP), 8ml dibutyl phthalate (DBP) and 12g graphene (C) powder mix, after stirring with glass rod, then in vacuum mixer with Stir at a speed of 300rpm for 20min to obtain a suspension;

[0026] Step 2. Pour the suspension obtained in Step 1 evenly on the casting machine, set the scraper speed to 2mm / s, and set the height to 1mm, form a film by casting method, and dry it naturally at room temperature for 24 hours to obtain a film;

[0027] Step 3. Put the acrylic plate in the laser engraving machine, import the honeycomb structure drawing drawn by AutoCAD into the laser engraving machine, set the engraving speed to 15mm / s, repeat the engraving twice, and engrave according to...

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Abstract

The invention discloses a design method of a honeycomb structure tunable metasurface based on thickness and size changes; it belongs to the technical field of tunable metasurfaces. The invention aims to solve the technical problem that the operating frequency is single and fixed in the existing metasurface absorbing materials. The present invention prepares a plurality of honeycomb structure metasurfaces; then through the arch frame method to test the wave-absorbing performance of multiple honeycomb structure supersurfaces in step 4, the reflection loss curve is obtained, and compared with the simulation results of CST Studio Suite, it is concluded that its operating frequency varies with Finally, a set of tunable metasurfaces with honeycomb structures based on thickness and size changes are obtained. The preparation method of the invention is simple, the preparation efficiency is high, and it is effective for adjusting the working frequency of microwave absorption.

Description

technical field [0001] The invention belongs to the technical field of tunable metasurfaces. Background technique [0002] In recent years, research on metamaterials and metasurface absorbing materials has been increasing day by day, but most of the current metasurface absorbing materials have limited frequency response and absorption strength, that is to say, such absorbing materials lack adaptability and reliability. tuning. In order to broaden the application range of metasurface absorbing materials, especially for broadband wireless communication systems, including emerging cognitive radio systems and smart radar systems, it is necessary to realize the tunability of absorbing materials. In addition, on aircraft stealth coatings, the working frequency shift phenomenon caused by material aging often occurs, resulting in unsatisfactory stealth effects. Tunable metasurface absorbing materials are also needed to maintain the stability of the working frequency and better play...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/10G06F30/20C08L29/14C08K5/521C08K5/12C08K3/04C08J5/18B23K26/362
CPCG06F30/10G06F30/20C08J5/18B23K26/362C08J2329/14C08K5/521C08K5/12C08K3/042
Inventor 李均沈振宇刘璐璐邓楠栋周忠祥
Owner HARBIN INST OF TECH
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