Triple band polarization-independent metamaterial absorber with bandwidth enhancement at X-band
- 6 September 2013
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 114 (9), 094514
- https://doi.org/10.1063/1.4820569
Abstract
In this paper, we propose a triple band polarization-independent metamaterial absorber using square-shaped closed ring resonators over wide angle of incidence. The unit cell consisting of various square loops is designed by using the parametric analysis so that it exhibits a triple band absorption response with two bands lying in C-band and one in X-band for airborne and surveillance radar signal absorption applications. Furthermore, in X-band, the absorber exhibits a broadband response with full width at half maxima bandwidth of 940 MHz (9.43%). The structure exhibits bandwidth enhanced properties for any angle of polarization under normal incidence. It also shows high absorption for wide angle of incidence up to 60°. The proposed structure is fabricated and experimental results show proper matching with the simulated responses.Keywords
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