Due to the global growth in popularity of Fifth Generation (5G) cellular communications, demand for shielding against it has risen a variety applications, mainly related cybersecurity but also isolation, calm areas and so on. This research paper aims provide suitable dual-band fractal FSS (Frequency Selective Surface) 5G lower band frequencies: 750 MHz 3.5 GHz. The unit cell is shape bow tie, w...

This paper is focused on the study of acoustic metasurface cloaking, based on the use of appropriate ultrathin pseudo-surfaces that may act as cloaking devices for a finite range of frequencies. The technique consists in tailoring the appropriate acoustic surface impedance which cancels the scattered field of a diffracting spherical obstacle placed in the trajectory of an impinging acoustical w...

In this paper the effects of parameters of a square loop frequency selective surface to the resonance frequency is studied. Side length of the square loop, width of the conducting patch, thickness and the substrate are varied and their effects on resonance frequency evaluated via a Finite Integration Technique (FIT) based simulator. The absorption and reflected characteristics and the transmiss...

A novel dualband frequency selective surface (FSS) with both a dielectric substrate and superstrate constructed by double-fourlegged loaded slots (DFLLSs) is investigated, in which each periodic cell consists of two neighboring DFLLSs with different dimensions, its resonant frequencies occur at 183 GHz and 220 GHz. Good selectivity performance can be easily achieved both in lower passband and h...

This paper deals with the theoretical investigation on a reduced sized Frequency Selective Surface (FSS). The FSS is designed by cutting a unique shaped slot into square patch. It has been shown, how the variation of the dimension of the slot and periodicity results in shifting of resonant frequency . Compared to conventional square patch FSS the designed FSS can provide reduction in resonant f...

In this paper, a single-layer bandstop Frequency Selective Surface (FSS) is proposed for Wireless Local Area Networks (WLAN) Applications. The unit cell of the proposed FSS consists of a modification in a square patch element by the insertion of triangular shaped slots. The designs demonstrate a wide 3.8 GHz stopband in the WLAN frequency range. Moreover, it shows angular stability at various a...

<span lang="EN-US">In this work, a meta-surface (frequency selective surface) loaded high gain directional antenna system is presented. The developed using ultra-wideband (UWB) element and reflector. UWB designed simulated without has poor impedance bandwidth directivity. A created unit cell equal in the size of substrate. placed over at optimized height (H=30 mm). bandwidth, directivity ...

The multispectral electromagnetic (EM) absorber based on the frequency selective surface (FSS) has been applied with interest in field of stealth technology due to its ability avoid detectors or guided weapons at multiple wavelengths simultaneously. absorption performance is generally accomplished by stacking different types FSS absorbers layers. Herein, a thin and flexible single-layer (MSLF) ...

This paper reports a flexible and stretchable metamaterial-based "skin" or meta-skin with tunable frequency selective and cloaking effects in microwave frequency regime. The meta-skin is composed of an array of liquid metallic split ring resonators (SRRs) embedded in a stretchable elastomer. When stretched, the meta-skin performs as a tunable frequency selective surface with a wide resonance fr...