AI Article Synopsis
- Orbital angular momentum (OAM) multiplexing is important for enhancing speed in wireless communication and remote sensing technologies.
- This study introduces an innovative angle-dispersive meta-atom structure aimed at effectively multiplexing multi-channel electromagnetic waves with high transmission efficiency.
- The resulting metasurface operates at the X band, successfully converting incoming transverse-magnetic waves into distinct OAM beams, improving energy transfer to these modes compared to traditional methods.
Article Abstract
Orbital angular momentum (OAM) multiplexing of electromagnetic (EM) waves is of great significance for high-speed wireless communication and remote sensing. To achieve high-efficiency OAM multiplexing for multi-channel incident EM waves, this paper presents a novel angle-dispersive meta-atom structure, which can introduce the required anti-symmetric phase dispersion as well as high transmission efficiency for OAM multiplexing. These meta-atoms are then arranged delicately to form an angle-dispersive metasurface working at the X band, which enables three-channel OAM multiplexing by converting highly directional transverse-magnetic (TM) waves incident from 0 and ±45° to coaxial OAM beams with = 0 and ±2 modes, respectively. The simulation and experimental results reveal that the proposed metasurface can convert a higher proportion of energy to the required OAM modes compared to the conventional OAM multiplexing metasurfaces, which can significantly improve the coaxial transmission efficiency of multi-channel OAM multiplexing.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10781367 | PMC |
| http://dx.doi.org/10.3390/s24010228 | DOI Listing |
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