Dual-band polarization-/angle-insensitive metamaterial absorber
Author(s) -
Han Xiong,
Linlin Zhong,
Chao-Ming Luo,
Jing-Song Hong
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4923319
Subject(s) - metamaterial absorber , multi band device , materials science , metamaterial , dielectric , polarization (electrochemistry) , optics , transverse plane , optoelectronics , transverse magnetic , absorption (acoustics) , radiation , resonator , dielectric loss , physics , tunable metamaterials , antenna (radio) , chemistry , telecommunications , structural engineering , computer science , engineering
A dual-band metamaterial absorber (MA) based on triangular resonators is designed and investigated in this paper. It is composed of a two-dimensional periodic metal-dielectric-metal sandwiches array on a dielectric substrate. The simulation results clearly show that this absorber has two absorption peaks at 14.9 and 18.9 GHz, respectively, and experiments are conducted to verify the proposed designs effectively. For each polarization, the dual-band absorber is insensitive to the incident angle (up to 60°) and the absorption peaks remain high for both transverse electric (TE) and transverse magnetic (TM) radiation. To study the physical mechanism of power loss, the current distribution at the dual absorption peaks is given. The MA proposed in this paper has potential applications in many scientific and martial fields
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