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This paper is focused on the analysis and modeling of transmission lines loaded with pairs of shunt-connected stepped impedance resonators (SIRs), and their application to differential sensors for dielectric characterization, and for diagnosis and quality control of material samples by comparison to a reference. It is demonstrated that by placing the SIR junctions in the same position of the line,...
A novel strategy for the design of common-mode suppressed differential (or balanced) filters, based on stepped impedance resonators (SIRs), is presented. The differential mode band pass response is achieved by coupling parallel LC resonators, implemented by a patch capacitance and a grounded inductance, through admittance inverters. Such inverters are implemented by means of 90o transmission lines,...
In this paper, it is shown that aggressive space mapping (ASM) optimization can be applied to the synthesis of stepped impedance resonators (SIR). Specifically, the considered resonators are SIRs shunt connected to a microstrip transmission line, also known as stepped impedance shunt stubs (SISS). These resonators are thus described by means of a shunt connected series LC resonator. It will be shown...
This paper is focused on the analysis of coplanar waveguides (CPW) loaded with symmetric resonators (such as split ring resonators and stepped impedance resonators) whose symmetry plane behaves as an electric wall at the fundamental resonance frequency. If these resonators are symmetrically etched in the back substrate side of the CPW, the resonators are not excited, and signal propagation along the...
In this letter, compact elliptic-function low-pass filters (LPF) implemented in coplanar waveguide technology by etching stepped impedance resonators (SIR) in the back substrate side, are presented. The required transmission zeros of the elliptic-function response are provided by the shunt connected SIRs. As an illustrative example, an order-3 prototype LPF with 1 GHz cutoff frequency is designed...
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