Abstract
An orbital angular momentum (OAM) detection approach at microwave band is proposed. A transmittance function is exploited to model a transmissive metasurface. Then, the metasurface is designed to convert an OAM wave to multiple waves, only one of which is Gaussian. The radiation direction of the Gaussian wave is distinguishable according to the order of incident OAM. Consequently, by locating the Gaussian wave, the incident OAM can be conveniently determined. We use a simple field source to simulate the incident OAM wave in full-wave simulation. It largely simplifies the simulation process when an incident wave carrying OAM is needed. Both numerical and full-wave simulation results are provided to validate our design, and they show good agreement with each other. Then, the metasurface is optimized for high directivity. Our work can provide an efficient and effective way for OAM detection in radio communications.
Recommended Citation
M. L. Chen et al., "Detection Of Orbital Angular Momentum With Metasurface At Microwave Band," IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 1, pp. 110 - 113, article no. 8119872, Institute of Electrical and Electronics Engineers, Jan 2018.
The definitive version is available at https://doi.org/10.1109/LAWP.2017.2777439
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Multiple orbital angular momentum (OAM)-beam detection; OAM; Transmissive metasurface
International Standard Serial Number (ISSN)
1536-1225
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Jan 2018
Comments
University Grants Committee, Grant FA2386-17-1-0010