多谐振U形缝隙纳米天线设计及吸收特性

刘媛媛; 熊广; 王杨; 朱路

doi:10.3788/OPE.20172508.2155

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多谐振U形缝隙纳米天线设计及吸收特性

微纳技术与精密机械 | 更新时间：2020-07-07

- 多谐振U形缝隙纳米天线设计及吸收特性
- Design of multi resonant U shaped slots nano-antenna and their absorption properties
- 光学精密工程 2017年25卷第8期页码：2155-2164
- 作者机构：
  
  华东交通大学, 信息工程学院, 江西南昌 330013
- 作者简介：
  
  [ "刘媛媛(1978-), 女, 江西永新人, 副教授, 硕士生导师, 2007年于华东交通大学获得硕士学位, 主要从事能量收集、无线传感器网络, 数据聚合等方面的研究。E-mail:lyy.78@163.com" ]
  [ "熊广(1993-), 男, 江西南昌人, 硕士研究生, 2015年于江西理工大学获得学士学位, 现为华东交通大学硕士研究生, 主要研究方向为天线设计与算法优化" ]
  朱路, E-mail:luyuanwanwan@163.com
- 基金信息：
  
  国家自然科学基金(31101081);国家自然科学基金(61162015);江西省科技支撑项目(20151BBE50095);江西省自然科学基金(20161BAB202061)
- DOI：10.3788/OPE.20172508.2155
  中图分类号： O431.1
- 收稿日期：2017-02-09，
  
  录用日期：2017-4-14，
  
  纸质出版日期：2017-08-25
- 稿件说明：
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刘媛媛, 熊广, 王杨, 等. 多谐振U形缝隙纳米天线设计及吸收特性[J]. 光学精密工程, 2017,25(8):2155-2164.

Yuan-yuan LIU, Guang XIONG, Yang WANG, et al. Design of multi resonant U shaped slots nano-antenna and their absorption properties[J]. Optics and precision engineering, 2017, 25(8): 2155-2164.
刘媛媛, 熊广, 王杨, 等. 多谐振U形缝隙纳米天线设计及吸收特性[J]. 光学精密工程, 2017,25(8):2155-2164. DOI： 10.3788/OPE.20172508.2155.

Yuan-yuan LIU, Guang XIONG, Yang WANG, et al. Design of multi resonant U shaped slots nano-antenna and their absorption properties[J]. Optics and precision engineering, 2017, 25(8): 2155-2164. DOI： 10.3788/OPE.20172508.2155.

摘要

太阳能收集是解决无线传感器网络能量受限的有效手段。针对传统采用光伏电池收集太阳能的方法易受环境与光照时间限制、吸收波段窄等问题，提出了一种耦合对称U形缝隙的多谐振纳米天线阵列用于太阳能收集。该天线的单元结构是在银介质基板上刻蚀4个对称的U形缝隙，U形缝隙附近产生的表面等离激元相互耦合，使其在宽波段内产生多个谐振点，从而提高宽波段的平均吸收率。利用时域有限差分方法分析了多谐振U形缝隙纳米天线阵列的吸收特性。仿真结果表明，天线阵列在400~870 nm，960~1 100 nm两个波段内吸收率较高，并出现多个吸收峰，吸收峰值最大可以达到99%。

Abstract

Solar collection is an effective mean to solve the problem that network energy of wireless sensor is limited. A multi-resonant nano-antenna array of coupling and symmetric U-shaped slots was proposed for solar collection

aiming at problems such as that solar collection of traditional photovoltaic battery was easily limited by environment and illumination time as well as problem of narrow absorption bands. 4 symmetric U-shaped slots were etched in silver dielectric substrate to obtain this antenna unit structure

and then the mutual coupling of surface plasmons produced in the vicinity of U-shaped slots to generate many resonance points in broadband

thus increasing average absorptivity of broadband. Absorption feature of nano-antenna array of multi-resonant U-shaped slots was analyzed through finite difference time domain method. Simulation result indicates that absorptivity of antenna array is higher in two bands of 400~870 nm and 960~1 100 nm

and there are many absorption peaks. Absorption value can reach 99% maximally.

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Keywords

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