An 'H'-shape three-dimensional meta-material used in honeycomb structure absorbing material

作者：Huang Daqing^*; Kang Feiyu; Zhou Zhuohui; Cheng Hongfei; Ding Heyan

来源：Applied Physics A, 2015, 118(3): 1099-1106.

DOI：10.1007/s00339-014-8922-1

An 'H'-shape three-dimensional meta-material structure which loaded on the sidewall of honeycomb structure absorbing material was designed and fabricated in this project. The simulation results demonstrated a super-wide absorption band below -10 dB between 2.3 and 18 GHz, which expanded 7 GHz compared with the absorber without meta-material. The relative impedance curve was analyzed, which showed that the meta-material has little impact on the impedance-matching characteristics of the honeycomb structure absorbing material. We further studied the distribution of both electronic field energy and magnetic field energy. The former one indicated that the low-frequency absorption peaks could easily be moved by adjusting the parameters of the parallel-plate capacitors which generate electric resonance, and the latter one illustrated that the three-dimensional meta-material could generate magnetic resonance between units which would not exist in two-dimensional meta-material. Then we verified the simulation results through experiment which display a similar absorbing curve. The differences between simulation results and experiment results were caused by the addition substrate of the meta-material, which could not be eliminated in this experiment. However, it still implied that we can obtain a meta-material absorber that has a super-wide absorbing band if we can put the meta-material on the sidewall of the honeycomb without attachments.

• 出版日期2015-3
• 单位清华大学; 中国航发北京航空材料研究院