Wide-band high absorption electromagnetic absorber with Chaos patterned surface

摘要： A resistive metasurface surface featured by Rossler Chaos reaction-diffusion system patterns is proposed and realized in a wideband electromagnetic absorber. The chaos surface consists of units with both random shapes and dimensions. Simulation results show absorption phenomenon and correlation function analysis indicates new wave-absorbing mode can be generated when correlation of the edges of the chaos patterns matches geometrical size of chaos units. Experimental results indicate unconventional bandwidth ratio with reflectivity lower than -10dB, -15dB, -19dB reaches 96.84%, 80.1% and 56.1%, respectively. High absorption nature makes this structure has application potential in modern anechoic chamber or other electromagnetic wave absorbers.