Open AccessDesign of a wide-band metamaterial absorber based on resistance films
Author(s) -
Changzhi Gu,
Shaobo Qu,
Zhibin Pei,
Zhuo Xu,
Lin Bao-Qin,
Haijing Zhou,
Bai Peng,
Gu Wei,
Weidong Peng,
Hua Ma
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.087802
Subject(s) - materials science , metamaterial absorber , absorbance , polarization (electrochemistry) , metamaterial , optics , band gap , optoelectronics , substrate (aquarium) , absorption (acoustics) , composite material , tunable metamaterials , physics , chemistry , oceanography , geology
A wide-band, polarization-insensitive and wide-angle metamaterial absorber is presented, which is based on resistance films. A unit cell of the absorber consists of a hexagonal resistance film, a substrate and a metal backboard. Simulated reflectances and absorbances indicate that this absorber has a wide-band strong absorption for the incedent wave from 7.0 GHz to 27.5 GHz, indicating that electrocircuit resonances are more suited to realize a wide-band strong absorption than electromagnetic resonances. Simulated absorbances under different polarization angles and different incident angles show that this absorber is polarization-insensitive and angle-wide. Simulated influence of substrate and resistance film on the absorbance of the absorber indicates that there exist optimal values for the capacitance between the resistance film and the metal backboard and for the resistance of the resistance film, where electrocircuit resonances are strongest and the absorption band is widest.