In this paper, a simple dipole antenna is designed and analyzed using finite element method. The new design consists of two elements with cubodical shape and air gap. The dipole antenna is operating at 0.6 THz. The performance of the cubodical nanorod is measured in terms of return loss, radiation efficiency, directivity and realized gain of the dipole antenna. A comparative analysis is done for various materials Gold (Au), Silver (Ag), Titanium (Ti) in terms of the above mentioned parameters. The antenna is designed and simulated using FEM based electromagnetic solver, Ansys HFSS.