基于周期性人工微结构材料实现和调控宽带微波吸收

We proposed and demonstrated a scheme to realize and tune the broad band microwave absorption properties of composite materials by periodic artificial micro-structure materials (PAMMs). By combining the tunability of PAMMs's dispersion properties and adding one layer or two layers of PAMMs composed of periodic micro-structure cut-wires to the microwave absorbing materials, saying, carbonyl iron powder coating (CIPC) we show by simulations that the composite micro-structure materials can realize broadband absorption in the microwave region. It is found that the frequency region in which the reflection loss is less than -10 dB occurs during 4.65-13GHz. This is a common effect of microwave absorbing materials and PAMMs. In addition, the dependence of the absorbability on the configuration parameters of PAMMs is clarified. Simulation results reveal that the configuration parameters of PAMMs are the main factors in enhancing and tuning microwave absorption properties.