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. pp. 1-8. DOI https://doi.org/10.34133/2019/9686213
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. pp. 1-8. DOI https://doi.org/10.34133/2019/9686213
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. pp. 1-8. DOI https://doi.org/10.34133/2019/9686213
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 |
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Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 22 May 2020 14:05 |
Last Modified: | 30 Oct 2024 19:14 |
URI: | http://repository.essex.ac.uk/id/eprint/26863 |
Available files
Filename: A Small-Divergence-Angle Orbital Angular Momentum Metasurface Antenna.pdf