Polarization insensitive switchable metamaterial absorber/reflector for X-band applications

• Main Authors: Mustapha, M. G., Rahim, M. K. A., Murad, N. A., Ayop, O., Tuntrakool, S., Baba, M. A., Iliyasu, A. Y., Jalil, Mohd. Ezwan
• Format: Article
• Language: English
• Published: Institute of Advanced Engineering and Science 2020
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/89891/1/MohamadKamalRahim2020_PolarizationInsensitiveSwitchableMetamaterialAbsorber.pdf; http://eprints.utm.my/id/eprint/89891/; http://dx.doi.org/10.11591/eei.v9i6.2196
• Institution: Universiti Teknologi Malaysia

A unit cell of squared shaped polarization-insensitive switchable metamaterial absorber/reflector is presented. The structure operates at 10.20 GHz under both absorber mode and reflector mode configurations. Copper wire bridging the gaps to form a circular shape structure were used as switches for operation mode selections. The structure was designed on an FR4 substrate, and the incidental wave angles were varied from 0 to 50 degrees. The structure demonstrated almost 100% absorption at resonance, 3.314 GHz percentage bandwidth at 80% as an absorber. On the other hand, as reflector, it demonstrated almost a 90% reflection and a usable bandwidth of 3.327 GHz.