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Broadband Anomalous Reflection Based on Gradient Low-Q Meta-Surface

journal contribution
posted on 30.05.2013, 00:00 by M. Pu, Po Chen, C. Wang, Y. Wang, Z. Zhao, C. Hu, C. Huang, X. Luo
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.

History

ISO

eng

Language

English

Publisher

University of Wyoming. Libraries

Journal title

AIP Advances

Collection

Faculty Publication - Geology & Geophysics