Investigation of a square loop Frequency Selective Surface (FSS) on hybrid material at 2.4 GHz

The design FSS structure consists of square loop FSS structures placed on the FR4 board and glass. The square loop FSS is designed and simulated by using the CST Microwave Studio software for 2.4 GHz based on industrial, scientific and medical bands (ISM) standard. The reflection (S11) and transmission (S21) of the design FSS structure is analyzed based on the six types of configuration that have been set up. The hybrid material (FR4 board and glass) affects the transmission and reflection of the FSS. The highest efficiency for 2.4 GHz is 73% by using configuration 2.