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Abstract
In this paper, a novel three-band microwave metamaterial absorber is presented. The proposed absorber consists of a metallic planar cross and square layer on the top and a metallic ground plane at the bottom. They are separated by a dielectric layer. The experimental results show that the proposed absorber exhibits triple band absorption responses lying in C-band, X-band, and Ku-band. The proposed absorber can perform absorption peaks at three resonant frequencies of 6.16, 8.76, and 12.54 GHz with the absorption of 99.87, 99.98, and 99.99% can be acquired, respectively. In addition, the absorber can operate at large incident angles for both TE and TM polarization.
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Funding
This work was supported by the Chinese Natural Science Foundation [grant number 61307052]; the Chinese Specialized Research Fund for the Doctoral Program of Higher Education [grant number 20123218110017]; the Jiangshu Province Science Foundation [grant number BK2011727]; in part by Funding of Jiangsu Innovation Program for Graduate Education (No. CXZZ13_0166); in part by Youth Funding for Science & Technology Innovation in NUAA (NS2014039); and in part by Open Research Program in Jiangsu Key Laboratory of Meteorological Observation and Information Processing [grant number KDXS1207].