文章信息/Info

Title:

Study of Electromagnetic Radiation Control Materials Based on Periodic Structure

作者:

 周佩珩; 陳萬里; 張林博; 張楠; 張輝彬; 謝建良; 鄧龍江

 電子科技大學 電子薄膜與集成器件國家重點實驗室，國家電磁輻射控制材料工程技術研究中心

Author(s):

ZHOU Peiheng;  CHEN Wanli;  ZHANG Linbo;  ZHANG Nan;  ZHANG Huibin;  XIE Jianliang;  DENG Longjiang

 National Engineering Research Center of Electromagnetic Radiation Control Materials, State Key Laboratory of Electronic Thin
Film and Integrated Devices, University of Electronic Science and Technology of China

關鍵詞:

電磁輻射控制; 周期結構; 吸波; 極化轉換; 紅外輻射

Keywords:

electromagnetic radiation control;  periodic structure;  absorption;  polarization conversion;  infrared radiation

DOI:

10.7502/j.issn.1674-3962.2017.09.09

文獻標志碼:

A

摘要:

電磁輻射控制材料可以對電磁波傳導、吸收和反射特性進行調控，成為一類不可或缺的電子信息材料。周期結構靈活的設計和獨特的性能為電磁波輻射控制帶來了新的發展，但其強電磁諧振必然導致“窄帶”問題。主要介紹了基于周期結構的幾種電磁波輻射控制材料，通過結合介質特性的多諧振耦合技術實現了寬帶/高性能設計。電磁諧振結構間的耦合，突破了非對稱開口諧振環（SRR）的極化/入射角敏感性；提出了基于等效電磁參數的諧振關系，形成了場束縛/圖形耦合等周期結構設計/加載技術，使得傳統磁性吸波體-10 dB反射帶寬增加65%且低頻吸收率提高了接近3倍；解決了極化轉換周期結構的寬帶/高效問題，設計的傳輸型極化轉換器具有帶通濾波/交叉極化/非對稱傳輸3種功能�；�于介質疊加的紅外寬帶吸波結構具有熱輻射調控功能，形成了紅外輻射控制的新思路。

Abstract:

As one of the essential electronic information materials, electromagnetic radiation control material manipulates the transmission, absorption and reflection of propagating electromagnetic wave. Due to the flexible design and unique properties, periodic structure has brought new development to electromagnetic radiation control technique, but its character of strong electrical/magnetic resonance also causes the narrow�瞓and problem. In this work, several kinds of electromagnetic radiation control materials based on periodic structure are introduced to realize broadband and high efficiency design by multi�瞨esonance coupling. The coupling between electrical/magnetic resonant components breaks the polarization and incident angel dependence of absorption in asymmetric periodic structure; the resonance condition based on effective electromagnetic parameters is proposed to support the design and loading method of periodic structures, e�眊. field confinement and pattern coupling, and the ��10 dB reflection bandwidth has been increased by 65% while the low�瞗requency absorption has been increased by almost 3 times; the broadband and high�瞖fficiency problem of periodic structure based polarization convector has been solved, while the proposed polarization convector of transmitting type has three functions as band�瞤ass filtering, cross�瞤olarization, and asymmetric transmission. Based on the dielectric layer stacking method, broadband infrared absorbers are proposed with the ability of thermal radiation control, which inspires the new technique for infrared radiation manipulation.