Abstract
In recent years, researches on electromagnetics (EM) wave absorber have been intensively investigated for numerous applications. One of essential issues in the EM wave absorber is the deficiency in its performance particularly bandwidth and absorption characteristics. In this paper, a multilayer EM wave absorber composed of metasurface is studied for X-band application. The utilization of metasurface and multilayer structures is aimed to enhance the characteristics of absorber in bandwidth and absorption performances. The structure of metasurface is configured by combining split ring resonator (SRR) and narrow thin strip deployed on different layers of 0.8mm thick FR4 epoxy dielectric substrate. The proposed EM wave absorber is characterized through its unit cell with the dimension of 3.80mm × 3.80mm. Some attempts by inserting another layer with varied thickness between the SRR layer and the narrow thin strip layer is performed to investigate the absorber characteristics. The characterization result shows that the insertion of another layer could improve the characteristics of proposed EM wave absorber.
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