In this paper, a low profile circularly polarized single layer metasurface based antenna is designed and validated through simulation. The antenna consists of non-uniform metasurface on the front side of the substrate and a co-planar waveguide(CPW) fed slot antenna on the back side. The slot is oriented at 450 with respect to xy plane. The metasurface consists of two different sized unit cells to obtain two resonant modes. The each unit cell is rectangular shaped where its dimensions are adjusted to achieve orthogonal phase shift required to obtain circular polarization. The larger dimension center patches are responsible for lower resonant frequency and smaller patches surrounded which are place in the corner are responsible for obtaining higher resonance frequency. The two resonances are combine to achieve wider axial ratio bandwidth. The simulated impedance bandwidth of 55.01% and an ARBW of 12.58% is obtained. The peak gain of 7.92dBi is achieved at 5.75GHz with 0.5dBi variation over the entire bandwidth. The radiation pattern is oriented in broadside direction with better crosspolarization value of minimum -20dB in both XZ and YZ plane. The results demonstrates that this design is well suitable for modern 5G communication which demands the consistent gain, good polarization purity and wide bandwidth.