Abstract
Conference Title: 2016 16th Mediterranean Microwave Symposium (MMS) Conference Start Date: 2016, Nov. 14 Conference End Date: 2016, Nov. 16 Conference Location: Abu Dhabi, United Arab Emirates A novel compact dual-band stop frequency selective surface (FSS) for shielding GSM application is proposed. The aim of this design is to block the 900/1800 MHz GSM signals transmitted by mobile phones from entering certain buildings such as mosques, hospitals, embassies, etc. without disturbing other type of communication systems. The proposed FSS design consists of a modified double square loop with folded strips into the inner space at the four corners of both square loops to control both resonant wavelengths of the band stop filter. As a result, the unit cell area is reduced to 0.11 λ, where λ is the free-space wavelength associated with the lower resonant frequency, achieving more than 34% size reduction in the unit cell area as compared to the existed designs in the literature at the same GSM resonant frequencies (GSM 900 and 1800 MHz). So, this will allow a limited area to accommodate more number of periodic FSS elements, also will isolate the desired resonances from grating effects. Furthermore, the proposed design shows a stable frequency response for the angles of incidence ranging from 0 to 60° with shielding efficiency of more than 20 dB at 900 and 1800 MHz mobile bands for both the transverse electric (TE) and the transverse magnetic (TM) polarization.