The forthcoming sixth generation (6G) communication network is envisioned to provide ultra-
fast data transmission and ubiquitous wireless connectivity. The terahertz (THz) spectrum …

Flat optics, metasurfaces, metalenses, and related materials promise novel on-demand light
modulation within ultrathin layers at wavelength scale, enabling a plethora of next …

Metasurfaces consisting of electrically thin and densely packed planar arrays of
subwavelength elements enable an unprecedented control of the impinging electromagnetic …

Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the
propagation of electromagnetic waves in desired directions. For example, metasurfaces …

A double-layered Huygens' unit cell is proposed to design a broadband metasurface lens
(meta-lens) for 5G millimeter-wave antennas. The Huygens' unit cell consists of a pair of …

In this article, we review the topic of Huygens' metasurfaces with an emphasis on existing
and emerging applications at microwave frequencies. Huygens' metasurfaces have …

An ultrathin and low-profile metalens antenna based on chain Huygens' metasurface is
proposed for 28 GHz band applications. The metasurface consists of an array series of …

Space-time-modulated metasurfaces can manipulate electromagnetic waves in space and
frequency domains simultaneously. In this article, an analytical design of space-time …

The ever increasing number of wireless devices and systems has led to a crowded spectrum
and increased the demand for versatile and multi-functional wireless apparatuses. Recently …

We present the end-to-end design of compact passive and lossless metasurface antennas
with integrated feeds. The complete low-profile system consists of a single-layered reactive …