A Reflective Metasurface to Generate Vortex Beam Carrying Orbital Angular Momentum for C-band Applications
Öz
In this letter, a novel unit cell is proposed which can be used as a phase controller of the electromagnetic wave at a specific frequency or a range of frequencies. The presented unit cell is designed at 6GHz with two stubs whose length changes from 1 mm to 9 mm parallel to the diameter of a square ring. For the design of the reflectarray antenna providing a vortex beam at the desired frequency the calculations of aperture efficiency have been performed and analyzed. By using full-wave simulation two reflectarrays producing orbital angular momentum with modes 1 and 2 have been implemented and verified. The simulation results demonstrate the good performance of the presented reflective antenna to generate an OAM (orbital angular momentum) beam.
Anahtar Kelimeler
Vortex beam, Orbital angular momentum, Metasurface, Reflectarray, Phase distribution
Kaynakça
- L. Allen, M. W. Beijersbergen, R. J. C. Spreeuw and J. P. Woerdman, “Orbital angular momentum of light and the transformation of Laguerre Gaussian laser modes,” Phys. Rev. A vol. 45, no. 8185, 1992
- B. Thide, H. Then, J. Sjöholm, K. Palmer, J. Bergman, T. D. Carozzi, Ya. N. Istomin, N. H. Ibragimov, and R. Khamitova, “Utilization of photon orbital angular momentum in the low-frequency radio domain,” Phys. Rev. Lett. vol. 99, no. 087701, 2007
- X. Hui et al., “Ultralow reflectivity spiral phase plate for generation of millimeter-wave OAM beam," IEEE Antennas and Wireless Propagation Letters, vol. 14, pp. 966-969, 2015
- Y. Chen et al., “A flat-lensed spiral phase plate based on phase-shifting surface for generation of millimeter-wave OAM beam," IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 1156-1158, 2015
- S. M. Mohammadi et al., “Orbital angular momentum in radio—A system study,” IEEE transactions on Antennas and Propagation, vol. 58, no. 2, pp. 565–572, 2009
- Z. Guo and G. Yang, "Radial uniform circular antenna array for dual-mode OAM communication," IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 404-407, 2017.
- Z. Akram, X. Li, Z. Qi, A. Aziz, Li Yu, Hua Zhu, X. Jiang, and X. Li, “Wideband vortex beam reflectarray design using quarter-wavelength element,” IEEE Antennas and Wireless Propagation Letters, vol. 18, no. 7, 2019.
- Shixing Yu, Long Li, Guangming Shi, Cheng Zhu, Xiaoxiao Zhou, Yan Shi, “Design, fabrication, and measurement of reflective metasurface for orbital angular momentum vortex wave in radio frequency domain,” Applied Physics Letters, vol. 108, no. 12, 2016
- Nayeri P, Yang F, Elsherbeni AZ. Reflectarray antennas: theory, designs and applications, 1nd ed. New Jersey: John Wiley & Sons, 2018.
- Yu, F. Yang, A. Z. Elsherbeni, J. Huang, and Y. Rahmat-Samii, “Aperture efficiency analysis of reflectarray antennas,” Microwave and Optical Technology Letters, vol. 52, no. 2, pp. 364-372, 2010