A Full-Duplex Metasurface for Simultaneous and Independent Control of Radiation and Reflection (IMAGE)
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Fig. 2 | Design principle and validation of the full-duplex R2I metasurface. (a) Photograph of the fabricated metasurface and schematics of the reflective and radiative meta-atoms. (b) Simulated unnormalized co-polarized reflection magnitudes for the PIN-ON and PIN-OFF states and their phase difference. (c) Simulated realized gain versus frequency (left) and radiation patterns at 10.55 GHz (right) for both PIN states, normalized to the PIN-OFF peaks of 5.65 dBi at 10.1 GHz and 1.71 dBi at 10.55 GHz, respectively. Shading in (b, c) marks the common operating band. (d-f) Measured and simulated radiation and reflection patterns for three representative spatial coding sequences.
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