Broadband anomalous reflection based on gradient low-Q meta-surface | Zendy

Mingbo Pu | Zendy; Po Chen | Zendy; Changtao Wang | Zendy; Yanqin Wang | Zendy; Zeyu Zhao | Zendy; Chenggang Hu | Zendy; Cheng Huang | Zendy; Xiangang Luo | Zendy

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Broadband anomalous reflection based on gradient low-Q meta-surface

Author(s) -

Mingbo Pu,

Po Chen,

Changtao Wang,

Yanqin Wang,

Zeyu Zhao,

Chenggang Hu,

Cheng Huang,

Xiangang Luo

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4809548

Subject(s) - broadband , metamaterial , bandwidth (computing) , optics , tunable metamaterials , surface wave , materials science , microwave , reflection (computer programming) , dispersion (optics) , phase (matter) , modulation (music) , physics , acoustics , telecommunications , computer science , quantum mechanics , programming language

Gradient–index metamaterial is crucial in the spatial manipulation of electromagnetic wave. Here we present an efficient approach to extend the bandwidth of phase modulation by utilizing the broadband characteristic of low-quality (Q) meta-surface in the reflection mode. The dispersion of the meta-surface is engineered to compensate the phase difference induced by frequency change. Meanwhile, a thin gradient index cover layer is added on the top of meta-surface to extend the phase modulation range to cover the entire [0, 360°]. As a proof of concept, anomalous nearly perfect reflection with relative bandwidth near 40% is demonstrated in the microwave regime

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