This paper proposes the deployment of Frequency Selective Surface (FSS) in any close building that aims to block the signals from the mobile phones without disrupting other types of communication. The proposed FSS is designed as a band-stop filter to attenuate the Global System for Mobile Communications (GSM) frequency bands operating at 900 and 1,800 MHz. The structure consists of a periodic array of double square loop elements etched on FR-4 substrate. The FSS shows a stable frequency response for the angles of incidence ranging from 0-60° with an attenuation of at least 16.7 dB. The measured results are shown to be in a very good agreement with the simulated results.
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