Design and analysis of compact perfect metamaterial absorber for X-band applications

Abstract

A new tri-ring hexagonal with meandered line design structure based on simple outline is proposed for X-band application in microwave ranges. The finite-difference time-domain (FDTD) method-based CST simulator was approved to observe the perfect metamaterial absorbance (PMA) analysis. Analysis was completed by using three configurations of PMA such as 1 × 1 unit-cell structure; 1 × 2 unit-cell and 1 × 2 array unit-cell structures; 2 × 1 unit-cell and 2 × 1 array unit-cell structures. The structure revealed the resonance frequency within the X-band of the microwave spectra. At resonance frequencies, the absorbance's peaks are 99.95% at 8.006 GHz and 99.61% at 11.525 GHz, correspondingly. X-band operating frequency has been obtained by all design configurations. The dimension of the offered structure is 10.50 mm × 10 mm that comprises all geometrical parameters to suitable the structure inside the area of substrate material. The results of the offered PMA exhibited X-band absorber response over the frequency ranges from 5 to 14 GHz. Hence, the offered structure enables numerous application areas, for instance, satellite communications, security, protection, stealth innovation and wireless computer networks.