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A novel dielectric resonator-based passive sensor for drop-volume binary mixtures classification

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IIT-21-100R.pdf (11.15Mb)
Fecha
2021-09-15
Autor
Gholami Mayani, Mahdieh
Herraiz Martínez, Francisco Javier
Matanza Domingo, Javier
Giannetti, Romano
Rodríguez-Morcillo García, Carlos
Estado
info:eu-repo/semantics/publishedVersion
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Resumen
 
 
In this study, the authors present a dielectric-resonator based sensor to characterize liquids. The sensor is based on a dielectric resonator (DR) fed by a slot-coupling mechanism in the ground plane of a microstrip transmission line (TL). The obtained device is a fully passive sensor that a radiofrequency (RF) signal can interrogate. A small hole was drilled on the DR surface to allocate a drop of the liquid under test (LUT); as a consequence, the resonant frequency of the sensor will depend on the electromagnetic characteristics of the LUT. The device is modeled both with an equivalent circuit model and through an electromagnetic modal analysis. The cavity perturbation technique is used to study the impact of the LUT on the resonant frequency and modal distribution; full-wave simulations corroborate the theoretical results. Finally, a prototype of the proposed sensor tuned to work in the 2.45 GHz band has been designed, manufactured, and measured. The device is cost-effective given the small size and practical to use, thanks to the minimal volume of the pool, which calls for quantities of LUT in the order of 0.13. The prototype has been tested with an ethanol-water solution set. The experimental results match well with simulations and show good repeatability. The sensitivity of the prototype resulted in being 718 kHz per percentage of ethanol in water.
 
URI
https:doi.org10.1109JSEN.2021.3094904
A novel dielectric resonator-based passive sensor for drop-volume binary mixtures classification
Tipo de Actividad
Artículos en revistas
ISSN
1530-437X
Materias/ categorías / ODS
Instituto de Investigación Tecnológica (IIT)
Palabras Clave

Dielectric Resonator (DR), Electromagnetic sensor, ISM band, Liquid sensor.
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Repositorio de la Universidad Pontificia Comillas copyright © 2015  Desarrollado con DSpace Software
Contacto | Sugerencias