Journal
PROGRESS IN ELECTROMAGNETICS RESEARCH M
Volume 27, Issue -, Pages 191-202Publisher
ELECTROMAGNETICS ACAD
DOI: 10.2528/PIERM12102101
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Funding
- Nation Basic Research Program of China [2009CB623306]
- National Natural Science Foundation of China [11274389, 61071058, 11204378]
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In this paper, a polarization-independent wide-angle planar metamaterial absorber exhibiting dual directional absorption is proposed. Measurement results indicate that the planar metamaterial absorber achieves absorptivities of 86.87% and 91.48% to the normally incident electromagnetic waves propagating in forward (+z) and backward (-z) directions, respectively. Due to geometry's fourfold rotational symmetry, the absorber is polarization-independent. Additionally, the absorber works well for a wide range of incident angles for both transverse electric and transverse magnetic polarizations. Besides its impressing performance, this planar metamaterial absorber is also extremely thin that it's thickness is approximately 1/32 of the working wavelength.
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