This work demonstrates a broad-band negative refractive index (NRI) by using the hybridization effect of dish-net dimer metamaterials (MMs), in the GHz frequency regime. Two symmetric layers of dishnet structure are expected to realize a wideband of negative refractive index with a high transmitted power of 88%, a high figure of merit of 26 at 15.2 GHz and to make the MM insensitive for polarization/wide-incident angle of electromagnetic wave. By adjusting the distance between these layers and their dielectric thickness, the NRI bandwidth are flexibly controlled. Further study indicates that the refractive index strongly depends on tangent loss of the dielectric substrate and number of hybridized modes. Also, we numerically investigate the hybridization characteristic in various operational frequency ranges. The performance of the proposed metamaterial is numerically, theoretically and experimentally demonstrated. This paper strengthens the novelty and computation of NRI metamat...

中文翻译：

---

对称超材料中等离子杂交的宽带负折射率：模拟，实验和表征

这项工作通过使用碟形网状二聚体超材料（MM）在GHz频率范围内的杂交效应，证明了宽带负折射率（NRI）。碟形结构的两个对称层有望实现负折射率宽带，具有88％的高发射功率，在15.2 GHz时具有26的高品质因数，并使MM对电磁波的极化/宽入射角不敏感波。通过调整这些层之间的距离及其介电厚度，可以灵活地控制NRI带宽。进一步的研究表明，折射率在很大程度上取决于介电基片的切线损耗和混合模式的数量。此外，我们在数字上研究了各种工作频率范围内的杂交特性。数值，理论和实验证明了所提出的超材料的性能。本文加强了NRI元数据的新颖性和计算能力。