Design of Unit Cells for Intelligent Reflection Surfaces Based on Transparent Materials

Intelligent reflection surfaces (IRS) facilitate wireless environments by increasing spectrum and energy efficiencies. IRS will be considered a key element in 5G and Beyond cellular networks. IRS design is based on the unit cells. In this paper, we present the design of unit cells based on transparent materials at millimetre-wave frequencies. The transparency of the surface is achieved by using materials such as Indium tin oxide (ITO) and quartz. Simulations have been carried out using CST microwave studio to evaluate the reflection characteristics of the proposed unit cells. Simulations suggest a maximum shift in the reflection phase up to 336° for variation in the dimensions of the unit cell with low reflection losses at 60GHz for 5G and Beyond Wireless Networks.