Abstract
AbstractThis report presents a pixelated wideband Metamaterial Absorber (MA) that operates in a microwave region. The proposed metamaterial absorber contains two same-shape resonators made-up of splitted squares in the form of pixels that have been obliquely placed opposite to each other. Wideband absorption of 5.67 GHz (52.88%) that ranges from 6.40 to 12.07 GHz with absorptivity above 90% has been achieved, which covers the X (8 to 12 GHz) band. The Full Width Half Maxima (FWHM) of the structure is 6.84 GHz (58.82%) which ranges from 5.96 to 12.80 GHz. The presence of metamaterial properties in the region of interest has been explained by plotting an Electromagnetic (EM) parameter, real and imaginary curves. The high absorption phenomenon is explained using surface current and electric field distribution at three absorption peaks (6.8, 8.5 and 11.9 GHz). The sensitivity of the polarization for the structure has been examined under normal and oblique incident of the wave. The proposed structure has been designed using ANSYS HFSS 19.1. The advantage of the proposed MA is the wideband absorption with an overall dimension of 16.5 \( \times \) 16.5 \( \times \) 3.2 mm in contrast to that of the other reported microwave MAs.
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