DESIGN AND SIMULATION OF METAMATERIAL UNDER THE THZ FREQUENCY FOR SHORT-RANGE WIRELESS COMMUNICATION

Abstract

This work analyses and designs a new leaf-like metamaterial structure constructed of copper material in the frequency range of 1-10 THz. The suggested metamaterial has a geometrical size of 10 x10 µm2 and is designed on a FR-4 substrate with a thickness of 0.35 µm. The NRW method is used to calculate the designed structure's permittivity ( 𝜺 r), permeability (µr), and refractive index (nr) using scattering parameters. The simulations analysed two different resonance peaks for the transmission (S21) and reflection coefficient (S11) at frequencies of 2.46 THz, 7.83 THz, and 3.15 THz, 8.7 THz, respectively. In this research, the distribution of electric and magnetic fields is also studied. The proposed structure's effective medium ratio (EMR) is 12.1, that demonstrating the compactness and homogeneity of the proposed metamaterial unit cell. The proposed structure can be used in short-range wireless THz communication or ultrafast THz interconnects, as well as the non-destructive detection of hidden weapons, because it resonates in the THz frequency band. Here, we have made design on COMSOL Multiphysics software.