Ultra-thin wideband magnetic-type metamaterial absorber based on LC resonator at low frequencies

作者：Zhang, Linbo^*; Zhou, Peiheng; Chen, Haiyan; Lu, Haipeng; Xie, Jianliang; Deng, Longjiang

来源：Applied Physics A, 2015, 121(1): 233-238.

DOI：10.1007/s00339-015-9415-6

• DESIGN

In this paper, we propose to realize a broad absorption band in the frequency regimes of 2-6 GHz based on multiple resonances. A magnetic-type metamaterial absorber with cross-arrow pattern is further demonstrated numerically and experimentally. Two absorption resonances are generated by LC resonance, leading to bandwidth expansion. The equivalent circuit theory and the surface current distributions of the proposed absorber are discussed to analyze the physical mechanism. Moreover, the broad bandwidth can be maintained as incident angle up to 30A degrees for transverse electric polarization and 45A degrees for transverse magnetic polarization. Finally, experimental results show that the proposed absorber with the total thickness of 2.4 mm exhibits a -10 dB absorption bandwidth by more than 70 %. The low-frequency absorber has potential applications in the area of eliminating microwave energy.

• 出版日期2015-10
• 单位电子科技大学