1-Bit Reconfigurable Metasurfaces for Frequency and Polarization Control in 5G FR2 Band

Reconfigurable metasurfaces can be used for manipulating wavefronts, but their scalability using available fabrication methods is limited owing to their complex geometries. This study presents a simplified metasurface with dynamic tunability in frequency and polarization within the 5G frequency range 2 (FR2) band. The meta-cells are made of square-ring resonators with PIN diode connections only in x-axis, which can manipulate wavefronts based on diode 1-bit switch (ON and OFF). Numerical simulations demonstrate high extinction ratios of up to 21.5 dB and cross-talk peaks of 22.3 dB, making this design promising for future 5G applications with 1-bit reconfigurable metasurfaces.