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In this paper, we use a novel convoluted geometry to design a dual-band Frequency Selective Surface (FSS) with angular stability and independent polarization operation. The geometry allows the design of a dual-band FSS to block ISM and UNII radio bands. We performed a parametric study with the commercial software ANSYS HFSS. A prototype of the designed FSS was built and its transmission characteristics were measured and compared with simulated results. We observed good agreement between numerical and experimental results. The FSS realized a dual-band response at the required bands and it had angular stability and polarization independence.

A Novel Simple Convoluted Geometry to Design Frequency Selective Surfaces for Applications at ISM and UNII Bands