Microwave Metamaterial Absorber for X, C and Ku Band Applications

This paper presents a Three-band polarization insensitive microwave metamaterial absorber (MMA). The proposed MMA (Metamaterial Absorber) consists of a unit cell made up of a top metallic patch and a ground metallic plane, with these components separated by an FR4 dielectric substrate that is extremely thin, with a thickness of only 0.014 times the wavelength (λ) of the incident electromagnetic waves. This structure has been designed to achieve excellent absorption properties in different frequency bands. The outcome of this work is used to find out the explosive detection, sensing and radar applications. The fabricated microwave Metamaterial Absorber (MMA) has been tested and validated through measurements. Its design was initially analyzed using numerical simulations performed with CST Microwave Studio Software.