A Split-Ring Resonator with Interdigitated Electrodes Aimed at the Dielectric Characterization of Liquid Mixtures (Invited Paper)

Giovanni Gugliandolo, Xiue Bao, Haoyun Yuan, Jinkai Li, Junchena Bao, Giovanni Crupi, Nicola Donato

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

This paper is focused on a microwave sensor for the evaluation of the dielectric properties of binary liquid mixtures at RF/microwave frequencies. The sensor consists of a split ring resonator (SRR), built using the microstrip technology. Interdigitated electrodes are integrated into the ring as a sensing element for liquid detection. A proper extraction procedure has been proposed for the accurate evaluation of the resonant frequency of the developed prototype. The resonant extraction procedure is based on the analysis of the frequency-dependent behavior of the complex forward transmission coefficient (S21) that is accurately modeled locally around the resonance by using a fitting function. According to the tests carried out with water-isopropanol liquid mixtures at various volume fractions, the studied device is more sensitive than the more conventional SRR sensor.

Original languageEnglish
Title of host publicationProceedings of 2022 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages137-141
Number of pages5
ISBN (Electronic)9781665492690
DOIs
Publication statusPublished - 2022
Event2022 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2022 - Xi'an, China
Duration: 28 Oct 202230 Oct 2022

Publication series

NameProceedings of 2022 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2022

Conference

Conference2022 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2022
Country/TerritoryChina
CityXi'an
Period28/10/2230/10/22

Keywords

  • dielectric characterization
  • interdigitated electrodes
  • liquid mixtures
  • modeling
  • permittivity
  • sensor
  • splitring resonator (SRR)

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