Design Reflective Metasurface elements for wireless network at MMW applications

Abstract

Reconfigurable intelligent surfaces (RISs) are considered a promising technology for the sixth-generation (6G) for wireless applications. RIS has received significant attention for its potential to enhance the coverage and capacity of wireless networks. This paper presents design RIS, a reconfigurable element working at 70 GHz with two PIN diodes are implemented on each unit. By switch the PIN diodes of the element between "ON" and "OFF" states, which result a change in amplitude and the reflected phase of the incident wave, the phase difference is within 180° is accepted by changing the state of diodes from "OFF " to "ON" and 145° phase shift when the states of diodes are "OFF" and "ON" and amplitude of the reflective wave is 0.4. such metasurface achieves dynamical beam deflection and polarization transformation through the reconfigurable design of the phase distribution. Simulation results show good agreement and verify the beam switching functionality of the proposed RIS