A Double-layer banana leaves-based absorber is designed and can be treated as a potential alternative to conventional MAM. The dielectric relaxation parameters of the dry banana leaves in powder form and the composites of dry banana leaves and charcoal powder have are measured by OCP method using vector network analyzer in the frequency range of 1–16 GHz. Further, the return loss of two single-layers and a double-layer with a thickness of 4 and 8.02 mm, respectively, is investigated in the frequency range of 1–20 GHz. Results show that the electromagnetic properties along with absorption performance of the double layer absorber are appreciably ameliorated as compared to its single-layer counterparts.

设计了一种基于香蕉叶的双层吸收器，可以将其视为传统 MAM 的潜在替代品。在 1-16 GHz 的频率范围内，使用矢量网络分析仪通过 OCP 方法测量粉末形式的干香蕉叶和干香蕉叶与木炭粉的复合材料的介电弛豫参数。此外，在 1-20 GHz 的频率范围内研究了厚度分别为 4 和 8.02 mm 的两个单层和一个双层的回波损耗。结果表明，与单层吸收器相比，双层吸收器的电磁特性和吸收性能明显改善。