Meta-surface design of ceramic composite absorbing materials based on the fibonacci sequence and the principles of fractal geometry

Abstract This paper presents a meta-surface design method for ceramic-like composite absorbing materials based on the Fibonacci sequence and fractal geometry. By combining the fractal gap square ring (FGSR) pattern with the Fibonacci sequence, a meta-surface structure with multi-level resonance characteristics was constructed, achieving wideband high-efficiency absorbing performance with a reflection loss of less than -10 dB in the 14–18 GHZ band. Parametric modeling and electromagnetic simulation visualization of Fibonacci fractal structures were achieved using CST simulation software, and the influence laws of different structural parameters and intrinsic electromagnetic parameters of materials on wave absorption performance were analyzed. The results show that the fractal meta-surface structure combined with the Fibonacci sequence exhibits excellent wave absorption performance in the 14–18 GHz range, with an average absorption rate of over 90% and a minimum reflectivity of -55 dB, providing a new idea for the design of new broadband wave absorption materials.