Microwave impedance sensors for the dielectric characterization of liquids

Publikationstyp
Conference Paper
Date Issued
2018-03
Sprache
English
Author(s)
Savic, Aleksandar 
Meyne, Nora  
Jacob, Arne  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/2463
Start Page
219
Citation
German Microwave Conference, GeMiC : 219-222 (2018-03)
Contribution to Conference
11th German Microwave Conference, GeMiC 2018  
Publisher DOI
10.23919/GEMIC.2018.8335069
Scopus ID
2-s2.0-85049104210
Publisher
IEEE
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.
DDC Class
600: Technik