Design of three metasurface acting as left-handed material for reconfigurable antenna

This research paper explains the design of three metasurface which can be used in antennas to bring reconfiguration in terms of frequency, polarization and bandwidth by extracting the negative permeability property of these metasurfaces. The selected unit cells of all the three metasurface designs are complementary split ring resonator (CSRR). A detailed graphical analysis of relative permeability vs. frequency, relative permittivity vs. frequency and refractive index vs. frequency are done by calculating the value of reflection coefficient (S₁₁), transmission coefficient (S₂₁), relative permittivity (ε_r) and relative permeability (μr) at each operating frequency of concerned range. Metasurface 1 has ε_r and μ_r negative from 0.80 to 2.5 GHz. In metasurface 2 negative ε_r and μ_r is observed at 0.9 GHz, 2 to 4.6 GHz, 5.9 to 7 GHz, 7.3 to 8.9 GHz and 9.5 to 10 GHz. Metasurface 3 shows negative ε_r and μ_r value in 1 to 1.4 GHz, 3.7 to 4.4 GHz and 7.1 to 10 GHz range which makes this design more suitable to be used for GPS, WLAN, WiMAX, Wi-Fi and ITU bands as compared to other two metasurface designs. The simulation of the unit cell is done in HFSS software V.13. Above the unit cell we have assigned master slave boundary and downward radiation boundary is assigned. Floquet port has been used for this approach.