An broadband transparent metamaterial absorber using an ITO resistive-film

Abstract

A broadband two-layer transparent metamaterial unit is proposed as a absorber at X-band, Ku-band and K-band. The transparent soda-lime glass and indium tin oxide (ITO) film were used to design the transparent metamaterial absorber unit. In the case of both TE-polarization and TM-polarization, a high absorption, more than 90%, is shown in the frequency range of 8.1GHz to 28.7GHz. The thickness of the metamaterial absorber unit is 3.3mm. The metamaterial absorber unit has wide incident angle stability and high transparency. It can be widely used in all kinds of household appliances in order to reduce the electromagnetic radiation because the structure is transparent in the visible light band.