In this letter, a millimeter-wave (mm-wave) nondiffracting Airy orbital angular momentum
(OAM) beam is experimentally demonstrated by using a single-layer hexagonal lattice …

In this letter, a wideband transmitting metasurface is proposed to generate the orbital
angular momentum (OAM) vortex beam in the Ka-band. The proposed unit cell is a novel …

In this letter, an innovative reflectarray (RA) antenna able to radiate in the same direction
multiple orbital angular momentum (OAM) modes, is presented: depending on the direction …

In this letter, a wideband circularly polarized high-order Bessel beam reflectarray composed
of 30× 30 elements with different spatial orientations is proposed. The element is formed by …

A 3D printed dielectric reflectarray is studied to generate orbital angular momentum (OAM)
beam. The array element consists of a half-wavelength rectangular dielectric block and a …

In this paper, we propose a polarization insensitive metasurface to generate broadband
vortex beams with narrow divergence angle. The metasurface is composed of 30× 30 I …

In this paper, we proposed a reflective metasurface which controls the phase delay of the
electromagnetic (EM) wave through geometric phase manipulation. By coding the …

This Letter presents a single-layer, dual-frequency unit for generating orbital angular
momentum (OAM) in the microwave range. The unit cell consists of a square frame and two …

Orbital angular momentum (OAM) technology, refers to Laguerre-Gaussian (LG) beams,
twisted beams, vector/vortex beams, acoustic vortex beams and fractional vortex beams. It is …

In this letter, a closed-loop cross-dipole antenna array (CLCDAA) is proposed for wideband
orbital angular momentum (OAM) communication. The proposed antenna array is designed …