Design of a wide-band metamaterial absorber based on fractal frequency selective surface and resistive films

Abstract

We present the design of a wide-band metamaterial absorber, based on fractal frequency selective surface and resistive films. The total thickness is only 0.8 mm and shows a polarization-insensitive and wide-angle strong absorption. Due to the multiband resonance properties of the Minkowski fractal loop structure and Ohmic loss properties of resistive films, a strongly absorptive bandwidth of about 19 GHz is demonstrated numerically in the range 6.51–25.42 GHz. This design provides an effective and feasible way to construct a broad-band absorber in stealth technology.