article · Optical and Quantum Electronics
Abstract In this paper, a planar OAM reconfigurable plasma reflective metasurface with size 30 × 30 cm 2 is designed. It consists of the reconfigurable plasma metasurface reflector and a feed horn antenna. The phase distribution of the plasma reflective metasurface combines the OAM phase distribution and the beam focusing required phase distribution. The required phase shifting range is 360 ° which obtained by adjusting the plasma frequency with changing the applied DC biasing voltage for the argon gas. The advantages of the design are high gain 22.4 dBi , narrow divergence angle 5 ° , high purity, good stability, planar structure, and easy fabrication. Beam scanning using the reflective metasurface for l = 1 at ( θ = φ = 0 ° ), ( θ = 10 ° , φ = 0 ° ), ( θ = 20 ° , φ = 0 ° ) and ( θ = 30 ° , φ = 0 ° ) is demonstrated.
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DOI: 10.1007/s11082-024-07203-y
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