Electronically Reconfigurable 100-GHz Band Reflectarray for Wireless Communication Based on Microfiber/Liquid Crystal Composite

This letter introduces an electronically reconfigurable 100-GHz band reflectarray (RA) utilizing a microfiber/liquid crystal composite. The unit cell design is analyzed through full-wave simulations, while experimental measurements elucidate the RA's characteristics, including reflected power, steering range, and switching times. Results demonstrate that the proposed RA exhibits significant continuous beam steering capabilities, ranging from −40° to 40° at 100 GHz, with swift switching times of less than 230 ms. The maximum reflected power achieves −3.5 dB compared to a metal plate of the same size.