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GENERATION OF ULTRA-WIDEBAND MULTI-MODE VORTEX WAVES BASED ON MONOLAYER REFLECTIVE METASURFACE

By X. Dong, H. Sun, C. Q. Gu, Z. Li, X. Chen, and B. Xu

Full Article PDF (723 KB)

Abstract:
In this paper, a monolayer metasurface that can simultaneously generate multi-mode vortex waves in ultra-wideband is proposed. Smooth phase variation is obtained by properly assigning the arm lengths of arrow-shaped metal on the top of the reflective metasurface unit cell. Different reflective cells are arranged in different sectors to form a phase-shifted surface that can convert a linearly polarized plane wave into a vortex wave. The full-wave simulations show that the designed reflective metasurface can generate vortex wave with multi-mode in ultra-wideband from 18 GHz to 42 GHz, which is in good agreement with the theoretical analysis. The proposed reflective metasurface paves an effective approach to generate vortex wave with multi-mode in ultra-wideband for OAM-based systems. Compared to the traditional ways of generating vortex waves, our design has the advantage of wide bandwidth.

Citation:
X. Dong, H. Sun, C. Q. Gu, Z. Li, X. Chen, and B. Xu, "Generation of Ultra-Wideband Multi-Mode Vortex Waves Based on Monolayer Reflective Metasurface," Progress In Electromagnetics Research M, Vol. 80, 111-120, 2019.
doi:10.2528/PIERM19010504

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