earticle

영어

In this paper a new volumetric three dimension metamaterial design has been proposed. The structure consists of spherical balls of stainless steel and substrate of Bakelite. The structure is simulated from 1 to 20 GHz and show negative refractive in this range. Reflection and transmission coefficient (s-parameter) is used to calculate the effective permittivity and permeability of the structural. Refractive index of the structure is then calculated using effective permittivity and permeability of the structural. Due to negative refractive index it exhibits several unusual properties like focusing of light even with flat surfaces. This material can be easily incorporated with microstrip antennas to get highly directional beam patterns by using it as a substrate.