Title :
Soil moisture dielectric measurement using microwave sensor system
Author :
Yi Lung Then ; Kok Yeow You ; Dimon, Mohamad Ngasri
Author_Institution :
Dept. of Commun. Eng., Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
A microwave sensor system has been developed to operate from 2.2 GHz to 4.4 GHz and used to determine the change of soil dielectric constant with various values of gravimetric moisture content from 0% to 26%. Soil samples are placed on a microstrip ring resonator (MRR) sensor and the respective incident and reflected voltages are measured and converted into magnitude of return loss, |S11|. The calculated return loss, |S11| is then correlated with corresponding soil moisture content obtained from oven drying method and also the soil permittivity obtained from commercial dielectric probe with vector network analyzer.
Keywords :
gravimeters; microstrip resonators; microwave transistors; moisture measurement; network analysers; permittivity; permittivity measurement; voltage measurement; dielectric probe; frequency 2.2 GHz to 4.4 GHz; gravimetric moisture content; microstrip ring resonator sensor; microwave sensor system; oven drying method; reflected voltage measurement; respective incident measurement; return loss magnitude; soil dielectric constant; soil moisture dielectric measurement; soil permittivity; vector network analyzer; Dielectric measurement; Microwave measurement; Microwave sensors; Moisture; Soil; Soil measurements; Voltage measurement; Soil moisture; microstrip ring resonator; permitivity; return loss;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026548
