Reconfigurable electromagnetics through metamaterials—A review

G Oliveri, DH Werner, A Massa - Proceedings of the IEEE, 2015 - ieeexplore.ieee.org
The introduction of electromagnetic (EM) media with unique field manipulation properties,
collectively labelled as metamaterials, has boosted the interest toward the design, the …

Planar gradient metamaterials

Y Xu, Y Fu, H Chen - Nature Reviews Materials, 2016 - nature.com
Metamaterials possess exotic properties that do not exist in nature. Gradient metamaterials,
which are characterized by a continuous spatial variation of their properties, provide a …

A high-gain broadband gradient refractive index metasurface lens antenna

E Erfani, M Niroo-Jazi, S Tatu - IEEE Transactions on Antennas …, 2016 - ieeexplore.ieee.org
The design, simulation, and measurement results of a high-gain broadband gradient
refractive index (GRIN) planar lens fed by an antipodal exponential taper slot antenna …

Broadband true-time-delay microwave lenses based on miniaturized element frequency selective surfaces

M Li, MA Al-Joumayly, N Behdad - IEEE transactions on …, 2012 - ieeexplore.ieee.org
We present a new technique for designing low-profile, ultrawideband, true-time-delay (TTD)
equivalent microwave lenses. Such a lens is composed of numerous spatial time-delay units …