一种新型宽频低损左手材料设计  

Design of a Novel Broadband Low Loss Left-Handed Material

作　　者：王宝 张正平 Wang Bao;Zhang Zhengping(Institute of Big Data and Information Engineering, Guizhou University, Guiyang, Guizhou 550025, Chin)

机构地区：[1]贵州大学大数据与信息工程学院,贵州贵阳550025

出　　处：《激光与光电子学进展》2018年第4期303-308,共6页Laser & Optoelectronics Progress

基　　金：国家科技部国际合作项目(2014DFA00670)

摘　　要：通过在衬底材料单侧周期性排列金属线与方形开口谐振环,设计了一种新型左手结构。通过理论分析和软件仿真,提取了该左手材料的有效电参数。结果表明,在11.7~20.5GHz频段内,该左手结构表现出良好的负折射效应与双负特性,绝对带宽达8.8GHz,对Ku波段(8~12GHz)实现了全覆盖,单元损耗小于0.4dB。加工制作了实物并对其进行了测试,验证了其左手特性。与传统左手材料相比,所设计的左手材料实现了低损耗和宽频带。A novel left-handed structure is designed by periodically arranging metal wires and square diagonal- opening resonators on a single side of a substrate material. Based on the theoretical analysis and software simulation, the effective electromagnetic parameters of this designed left-handed material are extracted. The results show that, in the frequency band of 11.7-20.5 GHz, this structure possesses a good negative refraction effect and double negative characteristics and its absolute bandwidth is 8.8 GHz, which coverages the whole Ku band （8- 12 GHz）, and the loss of unit cell is less than 0.4 dB. Its real object is fabricated and tested, and its left-hand characteristic is confirmed. Compared with the conventional left-handed materials, the designed left-handed material realizes a low loss and a wide bandwidth.

关 键 词：材料 负磁导率 负介电常数 宽频带 绝对带宽 

分 类 号：O441[理学—电磁学]