Detection of Orbital Angular Momentum With Metasurface at Microwave Band

@article{Chen2018DetectionOO,
  title={Detection of Orbital Angular Momentum With Metasurface at Microwave Band},
  author={Menglin L. N. Chen and Li Jun Jiang and Wei E. I. Sha},
  journal={IEEE Antennas and Wireless Propagation Letters},
  year={2018},
  volume={17},
  pages={110-113}
}
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… 

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