Results 1 to 10 of about 812 (129)
Highly Sensitive Reflective-Mode Defect Detectors and Dielectric Constant Sensors Based on Open-Ended Stepped-Impedance Transmission Lines [PDF]
Sensors, 2020 In this paper, reflective-mode phase-variation sensors based on open-ended stepped-impedance transmission lines with optimized sensitivity for their use as defect detectors and dielectric constant sensors are reported.
Pau Casacuberta +5 more
doaj +10 more sources
Miniature Microwave Notch Filters and Comparators Based on Transmission Lines Loaded with Stepped Impedance Resonators (SIRs) [PDF]
Micromachines, 2015 In this paper, different configurations of transmission lines loaded with stepped impedance resonators (SIRs) are reviewed. This includes microstrip lines loaded with pairs of SIRs, and coplanar waveguides (CPW) loaded with multi-section SIRs. Due to the
Lijuan Su +3 more
doaj +6 more sources
Dual-Band and Wideband Bandpass Filters Using Coupled Lines and Tri-Stepped Impedance Stubs
Micromachines, 2023 In this paper, two bandpass filters—one with a dual-band response and the other with a wideband response—were designed, implemented, and experimented with.
Abdullah J. Alazemi
doaj +3 more sources
Transmission Lines Loaded With Pairs of Stepped Impedance Resonators: Modeling and Application to Differential Permittivity Measurements [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2016 Differential techniques are widely used in communication and sensor systems, as these techniques have been shown to improve the performance. This paper shows how differential sensing of permittivity can be conducted in a simple way. For that purpose, a microstrip line loaded with a pair of stepped-impedance resonators is used in two different resonator
Jordi Naqui +2 more
exaly +4 more sources
IEEE Access, 2020 Two different types of three pairs of coupled lines (TPCL) structures with bandpass and all-stop filtering (ASF) characteristics, respectively, are proposed and analyzed through impedance matrix deduction and input admittance calculation.
Donghao Li, Kai-Da Xu, Anxue Zhang
doaj +3 more sources
A microstrip bandpass filter using coupled lines loaded by open stubs [PDF]
Scientific ReportsA compact simple structure bandpass filter based on terminated three coupled line structures with high selectivity is introduced through odd and even-mode analysis.
Sadegh Heydari Kahkesh, Akram Sheikhi
doaj +2 more sources
IEEE Transactions on Microwave Theory and Techniques, 2021 Altres ajuts: Universidad Politécnica de Madrid Young Researchers (Grant Number: VJIDOCUPM18MGB) i ICREA This article presents an exhaustive study of the sensitivity in reflective-mode phase-variation sensors based on an open-ended transmission line with a step-impedance discontinuity. Such discontinuity delimits the sensing region (which extends up to
Jonathan Muñoz-Enano +2 more
exaly +3 more sources
Coaxial Low-Pass Filter Design and Manufacture
IEEE Access, 2023 In this study, a low-pass filter with coaxial transmission lines is designed and produced. The objective for designing a coaxial low-pass filter was to utilize both low-loss transmission and high breakdown voltage capability for high power microwave ...
E. Yilmaz, M. Ucuncu
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Oscillators Based on Step-Impedance and Slow Wave Transmission Lines for Sensing Applications
IEEE Transactions on Microwave Theory and Techniques, 2023 This work investigates the capabilities of oscillators based on step-impedance and slow wave structures to sense dielectric constants. The material under test (MUT) is placed over the structure and the objective is to achieve a high sensitivity of the oscillation frequency with the advantage of low phase noise, enabled by the high quality factor of the
Pontón Lobete, María Isabel +3 more
openaire +2 more sources
Validation of the Reference Impedance in Multiline Calibration With Stepped Impedance Standards
IEEE Open Journal of Instrumentation and Measurement, 2023 This article presents a new technique for evaluating the consistency of the reference impedance in multiline thru–reflect–line (TRL) calibration.
Ziad Hatab +3 more
doaj +1 more source