Abstract
This paper presents an analysis of a 1-bit unit cell for reflectarray antennas in X-band applications. Reflectarray antennas offer advantages such as lower profiles and lighter weights compared to traditional antennas. The unit cell is made up of four arrow-shaped structures with a single head, enabling the manipulation of electromagnetic waves and beam steering capabilities. The unit cell operates in two modes, bit-0 and bit-l. Simulation results demonstrate that the unit cell achieves a phase difference of 180 degrees for the co-polarization reflection coefficient across a wide range of frequency. Additionally, the paper discusses the potential use of tunable elements and graphene for switching operations to reduce fabrication costs. This research contributes to the development of compact and efficient reflectarray antennas for X-band applications.