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

Authors :
Mingbo Pu
Po Chen
Changtao Wang
Yanqin Wang
Zeyu Zhao
Chenggang Hu
Cheng Huang
Xiangang Luo
Source :
AIP Advances, Vol 3, Iss 5, Pp 052136-052136 (2013)
Publication Year :
2013
Publisher :
AIP Publishing LLC, 2013.

Abstract

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.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
3
Issue :
5
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.81126c3ce154480796fba10025086ddb
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4809548