Beam steering by using a gradient refractive index metamaterial planar lens and a gradient phase metasurface planar lens

Yahong Liu, Congcong Liu, Xueyu Jin, Beiyi Zhang, Yinghuai Zhang, Xinqi Zhu, Bin Su, Xiaopeng Zhao

科研成果: 期刊稿件文章同行评审

14 引用 (Scopus)

摘要

Metamaterials are composed of periodic or quasi-periodic subwavelength structures, having electric and/or magnetic responses. Metamaterials can arbitrarily tailor the refractive index by artificially tailoring the unit-cell geometries and dimensions. Recent years, as the two dimensional equivalent of bulk metamaterials, metasurfaces have caused considerable attentions due to the lower profile and simpler to fabricate than bulk metamaterials. Metasurfaces can impart discontinuities on electromagnetic wavefronts and can achieve the arbitrary transmission phase of the whole period range. Metamaterials and metasurfaces have led to the realizations of novel electromagnetic properties and functionalities through tailoring subwavelength structures and integrating functional materials. In this letter, two planar lenses are respectively proposed to control the beam direction of the horn antenna by using a gradient refractive index (GRIN) metamaterial and a gradient phase (GRPH) metasurface. It is shown that the antenna beam direction can be steered by controlling the refractive index of the GRIN metamaterial or the transmission phase of the GRPH metasurface. The differences between the two planar lenses for controlling the antenna beam are illustrated.

源语言英语
页(从-至)330-337
页数8
期刊Microwave and Optical Technology Letters
60
2
DOI
出版状态已出版 - 1 2月 2018

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