Perfect Metasurface absorber for microwave applications

Abstract

This design provides two absorption band with an absorption capacity of 99.98%. In this study presents analytical results using the CST program for a very simple design of an electromagnetic wave absorber with a negative refractive index, a copper X-shape printed on an insulating layer separating it from a flat ground layer of copper. This absorption is due to the dipole oscillation. Also, controlling the shape dimensions and thickness of the insulating layer leads to good results in the synthesis of the resonant frequency that contributes to the applications of energy collection and protection from the effects of electromagnetic waves. The results gave the highest value of absorption with h = 1 mm) and by selecting a proper value for g = 1 mm, the proposed design obtained the good absorption results. It is also worth noting that the design can be developed to operate in a wide range of frequencies such as microwaves, terahertz, up to optical frequencies, which may contribute to potential applications in many engineering and optical technologies.