Using a Microwave Acoustic Effect Applicator to Measure the Moisture Content of Water Bearing Samples

Kuniyuki MATSUBARA  Yuichiro USHIMI  Hideaki NANKO  Yukio YAMAMOTO  

C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)   Vol.J93-C   No.4   pp.138-140
Publication Date: 2010/04/01
Online ISSN: 1881-0217
Print ISSN: 1345-2827
Type of Manuscript: LETTER
microwave acoustic effect,  noninvasive measurement,  water content,  applicator,  

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A novel applicator using microwave acoustic technique to measure the water content in a sample is presented. A modulated 2.45 GHz signal fed to the sample produces an acoustic wave at the modulation frequency. The acoustic output voltages increase linearly with increased water content in the range from 14% to 90%.