Broadband Reconfigurable Metasurface with Reflection Amplitude and Phase Manipulation

This article proposes an active broadband reconfigurable metasurface designed to manipulate the amplitude and phase of reflected waves. The reconfigurable metasurface consists of tie-shaped metallic pattern and PIN diodes, where the PIN diodes are controlled by a bias voltage applied to achieve a 180 phase difference between the ON and OFF states. The operational frequency range of the reconfigurable metasurface spans from 6.5 to 13 GHz, exhibiting a relative bandwidth of 66.7%. Additionally, by controlling the bias voltage applied to the PIN diodes, the metasurface presents different reflected amplitude. The reflected amplitude manipulation experienced across the entire X-band exceeds 15 dB.