Metasurfaces have shown their great capability to manipulate electromagnetic waves. As a
new concept, reconfigurable metasurfaces attract researchers' attention. There are many …

This article reviews the latest developments of beam steering antennas that are entirely
passive to realize interference-free, power-efficient, and highly secured end-to-end wireless …

Design of a circularly polarized reconfigurable reflectarray antenna (RRA) at X band is
presented. The RRA element employs concentric dual split rings, and can be mechanically …

Metasurface retroreflectors, which scatter the incident electromagnetic wave back to
incoming direction, have received significant attention due to their compelling advantages of …

This work presents the design and experimental validation of a dual-band fully
reconfigurable circularly polarized (CP) reflectarray (RA) antenna for satellite …

This work provides design and analysis of a beam steering reflectarray antenna, designed at
26 GHz, based on the mechanical rotation of the array. Unit cells based on circular ring …

The growing demands of advanced future communication technologies require investigating
the possible enhancement in the current features of a reflectarray antenna. Its design and …

Due to the exponentially growing global mobile data of wireless communications evolving
from 5G to 6G in recent years, research activities of leveraging terahertz (THz) waves to …

A magnetic-enhanced reflectarray antenna (MERA) based on-negative (ENG) metamaterial
is proposed in this communication. By utilizing the variable-rotation technique (VRT), the …

In this paper, we propose a novel radial line planar phased array in which helical antenna
elements are individually rotated by their respective connected micromotors to realize …