Lightweight electromagnetic absorbing materials with thinner thickness and low density are highly desired for practical applications. In this work, a thin and lightweight magnetic metamaterial absorber was proposed by embedding liquid metal resonant patterns in magnetic composites medium with a low filling rate. Due to the coupling of magnetic medium and metamateria as demonstrated by CST (Computer Simulation Technology) simulation, the strong electromagnetic resonant loss and multiple reflections were rationally introduced. The obtained metamaterial absorber endows the strong absorption performance of -23.63 dB, an effective absorption bandwidth (EAB, with RL less than -10 dB) of 2.46 GHz under 0.9 mm and with a 1.91 g/cm³ density merely. The introduction of resonance patterns in the magnetic composites medium is an efficient way to fabricate lightweight and thin thickness metamaterials for high-performance microwave absorbers.

对于实际应用，非常需要厚度较薄且密度较低的轻质电磁吸收材料。在这项工作中，通过将液态金属共振图嵌入低填充率的磁性复合介质中，提出了一种薄而轻的磁性超材料吸收器。由于CST（计算机仿真技术）仿真证明了磁性介质和超材料的耦合，因此合理地引入了强电磁谐振损耗和多次反射。所获得的超材料吸收器在0.9毫米和1.91 g / cm ^3的条件下具有-23.63 dB的强吸收性能，2.46 GHz的有效吸收带宽（EAB，RL小于-10 dB RL）。仅密度。在磁性复合材料中引入共振模式是制造用于高性能微波吸收器的轻质和薄厚度超材料的有效方法。