Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 118, Issue 2, Pages 443-447Publisher
SPRINGER
DOI: 10.1007/s00339-014-8766-8
Keywords
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Funding
- National Natural Science Foundation of China [11204378, 11274389]
- Postdoctoral Science Foundation of China [2013M532131]
- National Natural Science Foundation of Shaanxi Province [2011JQ8031]
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We introduce a design of the metamaterial absorber (MA) consisting of spiral artificial inclusions printed on an ultra-thin dielectric layer backed by a metal plate. Both simulations and experiments show that the MA can achieve absorptions up to 96.49, 94.25, 98.94 and 92.04 % at 6.69, 8.70, 11.90 and 15.14 GHz, respectively. The surface current and power loss density of each absorption frequency were discussed to reveal the physical mechanism. Moreover, the proposed quadri-band MA possesses the advantages of being ultra-thin and polarization-insensitive and thus may find potential applications.
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