Multi-beam generations at pre-designed directions based on anisotropic zero-index metamaterials

作者：Cheng Qiang^*; Jiang Wei Xiang; Cui Tie Jun

来源：Applied Physics Letters, 2011, 99(13): 131913.

DOI：10.1063/1.3645628

• electromagnetic wave propagation
• metamaterials

We show that anisotropic zero-index metamaterials (AZIMs) can be utilized to realize single- and multiple-beam generations in the pre-designed directions. It has been shown that a high-gain beam will be generated when a line source is located in an AZIM, directing to the AZIM principle-axis direction. By rotating the principle axis to an arbitrary angle, the beam direction is adjusted correspondingly to that angle. Therefore, multi-beams are generated at the desired directions by designing differently oriented AZIMs. An experiment is carried out to validate this property, which shows good agreement to the theoretical analysis.

• 出版日期2011-9-26
• 单位东南大学