【作者】 胡敏； 高强； 王晓华；

【Author】 Min Hu;Qiang Gao;Xiao-Hua Wang;School of Physical Electronics, University of Electronic Science and Technology of China;Tinno Mobile Technology Corporation;

【机构】 电子科技大学物理电子学院； 天珑移动技术有限公司；

【摘要】 本文提出了一基于周期金属带线结构的透镜,该结构由平行和垂直的金属条组合而成。借助该结构,携带目标超分辨率信息的倏逝波可耦合到该结构中,并通过谐振的方式辐射到远场。调整单元结构的几何参数,可使该结构在特定的频点产生谐振,从而实现近场倏逝波到远场传播波的转换。利用该特点,本文将其作为一个散射体放在2个亚波长间距点源附近,通过与时间反演技术结合,很好地验证了其对亚波长间距点源的远场有效分辨。更多还原

【Abstract】 In this paper, a lens, based on periodic metal strip structure, is proposed, which is composed of parallel or vertical metal strips. With this structure, the evanescent waves, carrying superresolution information, are coupled and radiate to the far-field. By adjusting the geometrical parameters of the cell, the structure can be resonant at a particular frequency point so that the near-field evanescent wave can be converted to the far-field propagation wave. Using this feature, it works as scatterer near two point-like sources with subwavelength spacing. Combined with the time reversal technique, it can be found that they can be well distinguished in the far-field.更多还原