A compact multiband reject inverted double‐E microstrip filter on textile substrate

Abstract

This article presents the development of textile compact microstrip filters using jeans fabric dielectric substrates and pure copper polyester taffeta fabric conducting strips. Microstrip circuits such as antennas, filters, and frequency selective surfaces on textile materials exhibit some advantages over the traditional ones on microwave dielectric substrates, such as high flexibility, low weight, low cost, and easy fabrication. The proposed textile filter with inverted double‐E geometry is analyzed using the wave concept iterative procedure (WCIP), a full‐wave method, and through Ansoft Designer software. Filters with multiband reject performance are designed. For the purpose of validation, prototypes are manufactured and measured. Simulation (WCIP and Ansoft Designer) and measurement results are in excellent agreement. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2543–2548, 2015

Reconfigurable and stable frequency selective surfaces on nonuniform and finite arrays

“…The tangential component of the electric field, , and the surface current density, , are used to represent the incident and reflected waves on the FSS, as shown in Figure . The incident wave ( ) and reflected wave ( ) are described by the system of equations formed by (1) and (2), where Z 0 i is the characteristic impedance of medium…”

Iterative Full-Wave Analysis of Mandelbrot-Inspired Fractal Patch Antenna on Textile Substrate for UWB Applications

“…The WCIP method is a full-wave iterative method whose formulation is based on the electromagnetic wave concept [9][10][11][12][13][14]. It is a method that has been widely used by many researchers worldwide in the analysis of different types of microwave circuits such as antennas, filters, and frequency selective surfaces (FSS), including printed circuits on textile substrates, as presented in recent studies [13,14].…”

“…The brim santista textile material has been used as microstrip substrate, which has the following structural parameters: thickness h = 1.1 mm, relative permittivity ε r = 1.92, and loss tangent tanδ = 0.074 [13]. The patch and ground plane have been fabricated with pure copper polyester taffeta fabric, woven pure copper which is lightweight and flexible Figure 2 shows calculated results using WCIP method for the monopole microstrip Mandelbrot quasifractal geometry with three different substrates: polyester cotton fabric, brim santista textile, and FR4.…”

“…Results for resonant frequency, bandwidth, radiation pattern, and VSWR are obtained using the Wave Concept Iterative Procedure (WCIP). The WCIP is a full wave formulation that has been widely used in recent years in the analysis and characterization of various microwave circuits [9][10][11][12][13][14][15].…”

Iterative full‐wave analysis of compact band‐pass filters with Mandelbrot inspired fractal patch geometries

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