Adaptive Metasurface with Control of Transmission and Reflection Modes using PIN Diodes

In this work, an electronically controllable metasurface is presented that can switch the electromagnetic properties from transmission to reflection in the microwave frequency range. The unit cell structure has been analyzed using frequency domain (FD) and time domain (TD) simulations. The singlelayered square-ring unit cell structure is proposed with a defected ground plane which comprises two diodes for reconfiguration. The periodic <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$2 \times 2$</tex> array of the proposed unit cell structure is designed and investigated. When the diodes are in the OFF state, 83 % of the incident signal is transmitted. Whereas, in the ON state, 72 % of the incident signal is reflected. The simulated unit cell structure and adaptive metasurface is realized in this study, indicating the effectiveness of the study in 5 G and beyond communication networks.