期刊
JOURNAL OF APPLIED PHYSICS
卷 116, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4891716
关键词
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资金
- National Natural Science Foundation of China [61271100]
- Natural Science Foundational Research Fund of Shaanxi Province [2012JM8003, 2010JZ6010]
- Doctoral Foundation of Air Force Engineering University [080914002]
By loading the lumped resistances into the double octagonal rings metamaterials, a wideband, thin, and polarization-insensitive perfect absorber is investigated theoretically and experimentally. The perfect absorber is constructed of double octagonal rings loading the eight lumped resistances and the substrate with height of 3 mm. The effects of the double octagonal rings and eight lumped resistances are explored by absorption and the electric field distributions. The simulated results indicate that the structure obtains 9.25 GHz-wide absorption from 7.93 to 17.18 GHz with absorptivity larger than 90% at the incident angles from 0 degrees to 20 degrees and achieves above 12.2 GHz-wide absorption from 5.8 to 18 GHz with a full width at half maximum at wide incident angles from 0 degrees to 70 degrees. The fabricated metamaterial absorber device was measured and analyzed. A good agreement is observed between the simulation and the measurement. (C) 2014 AIP Publishing LLC.
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