A 10x10 1-bit RIS prototype on FR4 with air gap achieves 9 dB gain enhancement and ±30° beam steering at 3.5 GHz via phase-gradient coding and Arduino control.
Design of anom alous reflectors by phase gradient unit cell based digitally coded metasurface,
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Compact Reconfigurable Intelligent Surface with Phase-Gradient Coded Beam Steering and Controlled Substrate Loss
A 10x10 1-bit RIS prototype on FR4 with air gap achieves 9 dB gain enhancement and ±30° beam steering at 3.5 GHz via phase-gradient coding and Arduino control.