DocumentCode
1096746
Title
A Microstrip Resonator With Slotted Ground Plane for Complex Permittivity Measurements of Liquids
Author
Liu, Changjun ; Pu, Yang
Author_Institution
Sichuan Univ., Chengdu
Volume
18
Issue
4
fYear
2008
fDate
4/1/2008 12:00:00 AM
Firstpage
257
Lastpage
259
Abstract
A novel microstrip resonator is designed to measure complex permittivities of liquids with medium loss. The enclosed resonator is based on a lambda/2 open-circuit microstrip line with a slot in the ground plane. It is immersed into the liquid under test to measure the S-parameter from 2.2 to 2.6 GHz. The complex permittivities of binary liquid mixtures of methanol and ethanol are reconstructed from the resonant frequency and the unloaded quality factor. The experimental results agree with reference values. The maximum errors are 4.4% and 8.6% for the real and imaginary part of the permittivity, respectively.
Keywords
Q-factor; S-parameters; computational complexity; microstrip lines; microstrip resonators; S-parameter; binary liquid mixtures; frequency 2.2 GHz to 2.6 GHz; microstrip resonator; open-circuit microstrip line; resonant frequency; slotted ground plane; unloaded quality factor; Microwave chemistry; microstrip transmission line; permittivity measurement; planar circuit;
fLanguage
English
Journal_Title
Microwave and Wireless Components Letters, IEEE
Publisher
ieee
ISSN
1531-1309
Type
jour
DOI
10.1109/LMWC.2008.918894
Filename
4469928
Link To Document