A closed-cell metamaterial absorber (CCMA) made of low-permittivity dielectric (LPD) has been proposed and investigated in this paper. It is realizes five absorption peaks below -10 dB in the range of 6-18GHz, and the strongest absorption can reach near -40 dB. By investigating the distribution of electromagnetic fields, it is found that multi-resonance is caused by the embedding closed-cell. Interestingly, it is flexibly that part of absorption peaks could be moved individually by different parameters of closed-cell arrays. The similarities between the results of experiment and simulation confirm the practical feasibility of CCMA.

中文翻译：

---

基于低介电常数全介电结构的多波段闭孔超材料吸收体（CCMA）

本文提出并研究了一种由低介电常数电介质 (LPD) 制成的闭孔超材料吸收器 (CCMA)。在6-18GHz范围内实现了-10dB以下五个吸收峰，最强吸收可达-40dB附近。通过调查电磁场的分布，发现多谐振是由嵌入的闭孔引起的。有趣的是，部分吸收峰可以灵活地通过闭孔阵列的不同参数单独移动。实验和模拟结果之间的相似性证实了 CCMA 的实际可行性。