An ultra-wideband band-stop plasmonic filter (UWB-BSF) in mid-infrared (MIR) range based on metal–insulator–metal (MIM) waveguide coupled with a hexagonal resonator is proposed this work. Using RSoft CAD commercial software, the designed BSF numerically and theoretically investigated by 2D Finite-Difference Time-Domain method. To enhance BSFs system mid-infrared, obtaining ultra-wide bandgap wi...

Active network synthesis is important for circuit designer to find new circuits with desired performance. In this paper, a method of Tow-Thomas (TT) Bi-quad band-pass filter circuit generation methods is proposed using nullor representation of the operational amplifier (OPA), and a method for synthesizing active band-stop filters is presented, both of which start from voltage transfer function ...

We report observations of the optical stop band of periodic planar arrays of submicron silica spheres, and of macroporous polymers grown from these silica templates. The stop-band width and peak attenuation depend on the number of layers and on the dielectric contrast between the spheres and the interstitial regions, both of which are experimentally controlled. The results are compared to the p...

In this paper, the utilization of common fabrics for manufacturing e-textile metamaterial is investigated. The proposed design based on a transmission line loaded with split-ring resonators (SRRs) cotton substrate filter signal application. provides stop band between 2.7 GHz and 4.7 GHz, considering four stage SRR topology. Experimental results showed levels higher than −30 dB compact embroider...