期刊
SOLID STATE COMMUNICATIONS
卷 188, 期 -, 页码 5-11出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2014.02.026
关键词
Metamaterial; Magnetic resonances; Broadband absorption; Metamaterial absorber
资金
- key science and Technology Research projects of the Education Department of Henan province China [13B430228]
- Science and Technology Program of Henan, China [13212210049]
- National Natural Science Foundation of China [61162018]
A multi-resonance structure design of nearly perfect absorber (PA) was proposed based on square patch at microwave frequencies. One-layer square patch metamaterial has an absorption of 99.9%. The multi-layer metamaterials can extend the bandwidth of nearly perfect absorber. By stacking several such effectively enhanced due to the hybridization of magnetic polarizations in different layers. Numerical simulations reveal that the multi-layer metamaterials with different resonance frequencies can extend the absorption bandwidth. The full bandwidth at half-maximum (FWHM) bandwidth is improved to 2 GHz with 4-layers square patch structure. The simulated and experimental results are coincided well. The mechanism of nearly perfect absorption is explained in detail. (C) 2014 Elsevier Ltd. All rights reserved.
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