TY - GEN
T1 - Feasibility Study of an Industrial Moisture Content Sensor Based on Wheeler Cap
AU - Pratoomma, Prakorn
AU - Zandamela, Abel
AU - Chalermwisutkul, Suramate
AU - Narbudowicz, Adam
N1 - Publisher Copyright:
© 2021 EurAAP.
PY - 2021/3/22
Y1 - 2021/3/22
N2 - The paper proposes a technique for sensing of moisture content of a waste paper block based on Wheeler Cap measurement method. The technique allows sufficient penetration into the sample due to relatively low frequencies in the VHF band. Water blocks within the sample can be detected due to the increased loss compared to a dry sample. The simulation setup comprises a cylindrical Wheeler Cap structure and an electrically small antenna which is located in the same enclosure as the Material Under Test (MUT). The moisture content can be detected due to frequency shift and amplitude change of the reflected signal. The study demonstrates that varying moisture content from 5% to 50% results in the change of the frequency from 276.35 MHz to 264.35 MHz, and simultaneous change in the level of reflected signal from -4.51 to -6.64 dB. Other factors, such as misplacement of the sample, are also discussed.
AB - The paper proposes a technique for sensing of moisture content of a waste paper block based on Wheeler Cap measurement method. The technique allows sufficient penetration into the sample due to relatively low frequencies in the VHF band. Water blocks within the sample can be detected due to the increased loss compared to a dry sample. The simulation setup comprises a cylindrical Wheeler Cap structure and an electrically small antenna which is located in the same enclosure as the Material Under Test (MUT). The moisture content can be detected due to frequency shift and amplitude change of the reflected signal. The study demonstrates that varying moisture content from 5% to 50% results in the change of the frequency from 276.35 MHz to 264.35 MHz, and simultaneous change in the level of reflected signal from -4.51 to -6.64 dB. Other factors, such as misplacement of the sample, are also discussed.
KW - Electrically Small Antennas
KW - Folded Spherical Helix Antenna
KW - Green Technology
KW - Moisture Content Measurement
KW - Smart Industry
KW - Wheeler Cap
UR - https://www.scopus.com/pages/publications/85105515954
U2 - 10.23919/EuCAP51087.2021.9411130
DO - 10.23919/EuCAP51087.2021.9411130
M3 - Conference contribution
AN - SCOPUS:85105515954
T3 - 15th European Conference on Antennas and Propagation, EuCAP 2021
BT - 15th European Conference on Antennas and Propagation, EuCAP 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th European Conference on Antennas and Propagation, EuCAP 2021
Y2 - 22 March 2021 through 26 March 2021
ER -