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This paper proposes a silver printed double square loop FSS for cellular signals suppression at 880 – 960 MHz, 1710 – 1880 MHz and 1920 – 2200 MHz frequency bands. The conductivity of the stencil printed FSS structure deposited on glossy paper is determined. The optimized FSS prototype provides a maximum attenuation of more than 28.1 dB alongside with 320 MHz and 760 MHz bandwidth for the lower and...
This paper proposes a modified nested double square loop Frequency Selective Surface (FSS) in order to achieve a higher FSS packing density. By introducing slots to a conventional square loop, a longer electrical length of the FSS and a lower ratio of l/λ can be accomplished. The optimized FSS prototype provides a maximum attenuation of more than 30 dB alongside with 270 MHz and 690 MHz bandwidth...
This paper proposes a fractal square loop frequency selective surface (FSS) with dual-band stop behavior. The FSS elements are etched on FR-4 substrate to attenuate signals at GSM900, GSM1800 and IMT2000 frequency bands while transmitting other microwave signals. The unit cell geometry is a modification of the conventional square loop which shows an improvement in stability for oblique incidence up...
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