Absorption and Reflection Characteristics of a Circular Disk with Gridded-Square Loop-Loaded FSS Structure for X-Band Operations

This paper presents the absorption and reflection characteristics of a circular disk with gridded-square loop-loaded Frequency Selective Surface (FSS). The paper demonstrates the parameters affecting the absorption and reflection characteristics, and additionally performs the parametric analysis of the proposed structure. The parametric performance is investigated in two aspects: the former being the geometry, and the latter being the material properties. The proposed structure achieves to absorb the electromagnetic waves between 8 and 13GHz; therefore, that structure is available for use in X-band applications to make an invisible surface for the aforementioned band. Moreover, tunability of the frequency is stressed via varying the parameters in light of the parametric analysis in this study.