Reflectarray antennas have attracted special attention for implementing high gain antennas
as they combine some advantages of phased arrays and reflectors, such as low losses …

Reflectarrays (RAs) exhibit important advantages over conventional antenna arrays,
especially in terms of realizing pencil-beam patterns without the employment of the feeding …

Reflectarrays (RAs) have been attracting considerable interest in recent years due to their
appealing features, in particular, the possibility of realizing pencil-beam radiation patterns …

A novel ultra-wide-band tightly coupled dipole reflectarray (TCDR) antenna is presented in
this paper. This reflectarray antenna consists of a wideband feed and a wideband reflecting …

Advances in terahertz technology rely on the combination of novel materials and designs. As
new devices are demonstrated to address the terahertz gap, the ability to perform high …

In this article, a concept of a phased antenna array based on substrate integrated
waveguide (SIW) technology for 5G base stations is proposed. The array has a cosecant …

Mitigating outage regions is of particular interest for emerging millimeter-wave (mmWave)
and future sub-terahertz frequency cellular networks. Whereas smart radio environments …

We present a new technique for designing wideband, single-layer reflectarray antennas.
The proposed reflectarray exploits a wideband, polarization rotating unit cell that rotates the …

In this article, a novel beamforming patch array with a cosecant fourth power pattern is
proposed for millimeter-wave synthetic aperture radar (SAR) applications. It enables radar …

This paper covers our recent work on terahertz reflectarray antennas, providing a broad,
critical perspective, and contrasting different approaches. The reflectarray antenna is a well …