激光与光电子学进展, 2018, 55 (4): 041603, 网络出版: 2018-09-11
一种新型宽频低损左手材料设计 下载: 940次
Design of a Novel Broadband Low Loss Left-Handed Material
材料 负磁导率 负介电常数 宽频带 绝对带宽 materials negative magnetic permeability negative dielectric constant broadband absolute bandwidth
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11.7~20.5 GHz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8.8 GHz,对Ku波段(8~12 GHz)实现了全覆盖,单元损耗小于0.4 dB。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。
Abstract
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.
王宝, 张正平. 一种新型宽频低损左手材料设计[J]. 激光与光电子学进展, 2018, 55(4): 041603. Bao Wang, Zhengping Zhang. Design of a Novel Broadband Low Loss Left-Handed Material[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041603.