NDLI: Microstrip patch antenna sensor for measurement of the permittivity of homogeneous dielectric materials

Content Provider	IEEE Xplore Digital Library
Author	Bogosanovich, M.
Copyright Year	1999
Description	Author affiliation: Imaging & Sensing Team, Ind. Res. Ltd., Auckland, New Zealand (Bogosanovich, M.)
Abstract	The application of a small air-spaced coaxially fed rectangular microstrip patch antenna as a sensor for the measurement of the permittivity is presented. The models derived for the calculation of the permittivity from the shift in the resonant frequency for solid and liquid materials are described. The models are experimentally verified by measurements on several liquids and solid samples. The results are compared with those obtained using standard techniques, such as coaxial probe and waveguide cell measurements. An error correction technique for the elimination of the systematic error of the measurement is also included. The structure has very good sensitivity particularly for liquids, where the space between the patch and ground plane as well as the space above the patch are filled with the liquid under test. It is well suited for measurement of the complex permittivity of liquids or for monitoring of changes in permittivity values for solid and liquid materials.
Starting Page	31
Ending Page	36
File Size	496657
Page Count	6
File Format	PDF
ISBN	0780352769
ISSN	10915281
DOI	10.1109/IMTC.1999.776715
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-24
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstrip antennas Patch antennas Antenna measurements Permittivity measurement Liquids Coaxial components Solid modeling Error correction Resonant frequency Measurement standards
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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