MICROSTRIP NONUNIFORM IMPEDANCE RESONATORS

Microstrip resonators

Analysis of Microstrip Resonators

An accurate and efficient method was developed for computing the resonant frequencies of microstrip resonators. The formulation of the problem was carried out rigorously using the fullwave analysis rather than the quasi-static approximation. The characteristic equation was derived using Galerkin’s method applied in the Fourier transform domain. The accuracy of the method has been proven by comp...

Microstrip Bandpass Filters Based on Inductive-Coupled Stepped-Impedance Quarter-Wavelength Resonators

Inductive-coupling scheme for microstrip bandpass filters with quarter-wavelength steppedimpedance resonators is proposed. This is realized by a short-end stub which behaves as a K-inverter. It is investigated that the coupling coefficient of the resonators can be easily controlled by the length of the short-end stub. The filter has a compact size and good stopband rejection by employing the qu...

Miniaturised microstrip bandpass filter using stepped impedance ring resonators - Electronics Letters

Introduction: Emerging indoor geolocation systems use either geometric techniques [1, 2], or pattern recognition algorithms [3, 4] to locate a user. This is done in two stages. The first stage is to observe some characteristic of the transmitted signal, such as received signal strength (RSS), or delay (TOA) to derive location metrics. The second stage is to feed these metrics into a geolocation...

A Compact Microstrip Quadruplexer Using Slotline Stepped Impedance Stub Loaded Resonators

In this paper, a novel compact quadruplexer is implemented by using slotline stepped impedance stub loaded resonators (SISLRs) in ground plane. Four folded dual-mode slotline SISLRs with one input and four output coupled line structures are designed at different frequencies for the quadruplexer operation. By properly adjusting the geometrical parameters of a single dual-mode slotline SISLR, its...