Publisher DOI: 10.23919/GEMIC.2018.8335069
Title: Microwave impedance sensors for the dielectric characterization of liquids
Language: English
Authors: Savic, Aleksandar 
Meyne, Nora 
Jacob, Arne 
Issue Date: 10-Apr-2018
Source: GeMiC 2018 - 2018 German Microwave Conference (2018-January): 219-222 (2018-04-10)
Journal or Series Name: GeMiC 2018 - 2018 German Microwave Conference 
Abstract (english): Two small coplanar waveguide impedance sensors for the characterization of liquids are introduced. A simplified two-step calibration procedure is developed. The first step defines the reference plane, which is set close to the sample. This yields a simple lumped element equivalent circuit model. Only two known materials, namely air and a 1.0% NaCl solution, are then needed to determine calibration curves for parameter extraction. The capability of the presented sensors to determine the permittivity of unknown liquids with low, moderate, and high loss up to about 12 GHz is analyzed. The major strengths of the proposed approach are broadband measurement capability, simplicity of the calibration procedure and potential for miniaturization.
ISBN: 978-398126688-7
Institute: Hochfrequenztechnik E-3 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
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