Abstract A two-sided frequency selective surface (FSS) is proposed to shield two bands of the mobile frequencies (EGSM-900 and DCS-1800). The FSS consists an array square concentric-rings cells printed on both sides substrate offer better shielding frequencies. CST Microwave suit used for simulations. equivalent circuit model analysed transmission in terms stop estimated. obtained than 40 dB ac...

This paper reports the design, manufacture and characterisation of a new frequency selective surface (FSS) structure which meets the demanding requirements for transmission of 50.2 – 57.7 GHz radiation simultaneously for TE and TM polarizations at 45 incidence, and reflection of signals in four discrete higher frequency bands centered at 89 GHz, 165.5 GHz, 183.3 GHz and 229 GHz. The FSS is req...

In this communication, a wideband reconfigurable reflectarray based on reflector-backed active second-order bandpass frequency selective surface (FSS) is presented. The reflector composed of periodic short-circuited parallel plate waveguide (PPW) and the FSS stacked non-resonant metallic elements separated by thin dielectric substrates. By integrating microwave varactors in capacitive layers FS...

Three hexagonal patch antennas are designed for circular polarization and experimentally validated. These antennas are labeled; simple hexagonal patch, hexagonal patch with slotted ground and hexagonal patch with parasitic element. The measured impedance bandwidths of the three antennas are 2% for the simple patch, 5.2% for the patch with slotted ground and 6.35% for the antenna with parasitic ...

A method is presented for generating a broad-band rational interpolant approximation of the reflection coefficient of multiple-screen frequency-selective surfaces (FSSs). The technique is structured around a linearization of the system provided by a spectral domain moment method-based analysis of the FSS, followed by a model-order reduction of the linearized system using the dual rational Arnol...

The scattering analysis from metallic Grid FSS consisting of rectangular perforations on a thick metallic screen illuminated by an oblique incident plane wave is presented. The grid structure is analyzed using Scale Changing Technique (SCT) which is based on the partition of the grid-plane into planar sub-domains defined at various scale-levels. Electromagnetic interaction between subsequent sc...

The frequency selective surface (FSS) is a periodic structure with filtering performance for optical and microwave signals. The general periodic arrays made with patterned metallic elements can act as an aperture or patch on a substrate. In this work, two kinds of materials were used to produce unit cells with various patterns. Gold nanoparticles of 25 nm diameter were used to form periodic mon...

Abstract Shape-changing mechanical metamaterials have drawn the attention of researchers toward development continuous-range tunable frequency selective surfaces (FSSs). In this paper, a novel FSS utilizing an origami-inspired “eggbox” structure is presented featuring four-degrees freedom that can change response two orthogonal linear polarizations. The centrosymmetric be folded or rotated alon...

Terahertz (THz) filters and detectors can find a wide application in such fields as: sensing, imaging, security systems, medicine, wireless connection, detection of substances. Thermoelectric materials are promising basis for THz detectors’ development due to their sensitivity the radiation, possibility be heated under radiation produce voltage Seebeck effect. thin films Bi-Sb solid solutions s...