Chen, MLN;
Jiang, LJ;
Sha, WEI;
(2019)
Quasi-Continuous Metasurfaces for Orbital Angular Momentum Generation.
IEEE Antennas and Wireless Propagation Letters
, 18
(3)
pp. 477-481.
10.1109/LAWP.2019.2894772.
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Abstract
A quasi-continuous composite perfect electric conductor-perfect magnetic conductor metasurface and a systematic metasurface design process are proposed for the orbital angular momentum (OAM) generation. The metasurfaces reflect the incident left circularly polarized (LCP)/right circularly polarized (RCP) plane wave to RCP/LCP vortex beams carrying OAM at normal or oblique direction. Unlike conventional metasurfaces that are composed of discrete scatterers, the scatterers on the proposed metasurface form a quasi-continuous pattern. The patterning of the metasurface is calculated through grating vectors, and no optimization of single scatterer is required. Furthermore, the distortions from local-response discontinuity of discrete scatterers are avoided. This letter provides great convenience to high-quality OAM generation.
| Type: | Article |
|---|---|
| Title: | Quasi-Continuous Metasurfaces for Orbital Angular Momentum Generation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LAWP.2019.2894772 |
| Publisher version: | https://doi.org/10.1109/LAWP.2019.2894772 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Metals, Gratings, Strips, Impedance, Surface impedance, Cutoff frequency, Orbits |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10076917 |
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