基于双梯形金属条的二维超材料性能分析

发布时间：2019-06-28 11:29

【摘要】：提出了一种基于平行金属条和细金属线的双梯形二维超材料结构单元.该结构由介质板以及其两侧放置的一对反向对称梯形金属条组成.与传统二维超材料相比,该结构在电磁波平行入射时具有双左手频带特性,在电磁波双向入射情况下具有良好的左手频带拓展性,且结构易于制备.利用电磁仿真软件分别模拟电磁波垂直入射和平行入射条件下该结构的电磁性能.结果表明:该结构在两种入射情况下均能实现双负特性;梯形上底每增大0.5mm,双入射情况下结构的双负特性分别向高频移动0.2GHz和0.4GHz.该研究对基于平行金属条的左手材料的研究以及二维左手材料的发展具有参考价值.
[Abstract]:A double ladder two dimensional supermaterial structure element based on parallel metal strip and fine metal wire is proposed. The structure consists of a dielectric plate and a pair of reverse symmetrical ladder metal strips placed on both sides of the plate. Compared with the traditional two-dimensional supermaterial, the structure has the characteristics of double left-handed band when the electromagnetic wave is incident in parallel, and has good left-handed band expansion under the condition of two-way incident of electromagnetic wave, and the structure is easy to fabricate. The electromagnetic performance of the structure is simulated by electromagnetic simulation software under the condition of vertical incident and parallel incident of electromagnetic wave, respectively. The results show that the double negative characteristics of the structure can be realized under both incident conditions, and when the upper bottom of the ladder increases 0.5 mm, the double negative characteristics of the structure move to high frequency 0.2GHz and 0.4 GHz, respectively. This study has reference value for the study of left-handed materials based on parallel metal strips and the development of two-dimensional left-handed materials.
【作者单位】：中国矿业大学(北京)机电学院信息工程研究所;
【基金】：国家重点研发计划(No.2016YFC0801804) 国家自然科学基金(No.51674269)资助~~
【分类号】：TB34;O441

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