Research Repository

A Small-Divergence-Angle Orbital Angular Momentum Metasurface Antenna

Xu, Jianchun and Bi, Ke and Zhang, Ru and Hao, Yanan and Lan, Chuwen and McDonald-Maier, Klaus D and Zhai, Xiaojun and Zhang, Zidong and Huang, Shanguo (2019) 'A Small-Divergence-Angle Orbital Angular Momentum Metasurface Antenna.' Research, 2019. 1 - 8. ISSN 2639-5274

[img]
Preview
Text
A Small-Divergence-Angle Orbital Angular Momentum Metasurface Antenna.pdf - Accepted Version

Download (1MB) | Preview

Abstract

Electromagnetic waves carrying an orbital angular momentum (OAM) are of great interest. However, most OAM antennas present disadvantages such as a complicated structure, low efficiency, and large divergence angle, which prevents their practical applications. So far, there are few papers and research focuses on the problem of the divergence angle. Herein, a metasurface antenna is proposed to obtain the OAM beams with a small divergence angle. The circular arrangement and phase gradient were used to simplify the structure of the metasurface and obtain the small divergence angle, respectively. The proposed metasurface antenna presents a high transmission coefficient and effectively decreases the divergence angle of the OAM beam. All the theoretical analyses and derivation calculations were validated by both simulations and experiments. This compact structure paves the way to generate OAM beams with a small divergence angle.

Item Type: Article
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 22 May 2020 14:05
Last Modified: 22 May 2020 14:05
URI: http://repository.essex.ac.uk/id/eprint/26863

Actions (login required)

View Item View Item