Journal
APPLIED PHYSICS LETTERS
Volume 108, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4944789
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Funding
- National Natural Science Foundation of China [51477126, 61401335]
- 863 program
- Natural Science Basic Research Plan in Shaanxi Province of China [2013JZ019]
- Technology Innovation Research Project of the CETC
- Fundamental Research Funds for the Central Universities [K5051202051, SPSZ021409]
- AreoSpace T.T.&.C. Innovation Program
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In this paper, a reflective metasurface is designed, fabricated, and experimentally demonstrated to generate an orbital angular momentum (OAM) vortex wave in radio frequency domain. Theoretical formula of phase-shift distribution is deduced and used to design the metasurface producing vortex radio waves. The prototype of a practical configuration is designed, fabricated, and measured to validate the theoretical analysis at 5.8 GHz. The simulated and experimental results verify that the vortex waves with different OAM mode numbers can be flexibly generated by using sub-wavelength reflective metasurfaces. The proposed method and metasurface pave a way to generate the OAM vortex waves for radio and microwave wireless communication applications. (C) 2016 AIP Publishing LLC.
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