Microwave Characterization of Liquid Mixtures with a Miniaturized Interdigital Sensor

Xiue Bao, Ilja Ocket, Meng Zhang, Juncheng Bao, Dominique Schreurs, Bart Nauwelaers

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

4 Citations (Scopus)

Abstract

A miniaturized microstrip interdigital capacitor based sensor is proposed herein to characterize liquid mixtures. For low RF/microwave measurements, the sensing area is modeled as a capacitance in parallel with a conductance. According to the conformal mapping technique, a linear relationship between the capacitance and the permittivity of the liquid under test is obtained, which is further validated through a three-dimensional finite element simulation method. The sensor is then successfully used to characterize deionized water, pure isopropanol, and water-isopropanol mixtures.

Original languageEnglish
Title of host publicationIMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages157-159
Number of pages3
ISBN (Electronic)9781728109350
DOIs
Publication statusPublished - Jul 2019
Externally publishedYes
Event5th IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2019 - Bochum, Germany
Duration: 16 Jul 201918 Jul 2019

Publication series

NameIMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications

Conference

Conference5th IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2019
Country/TerritoryGermany
CityBochum
Period16/07/1918/07/19

Keywords

  • liquid mixtures
  • microstrip interdigital sensor
  • microwave measurement
  • permittivity characterization

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