Abstract
A simple microwave moisture meter for grain was introduced with reduction of the size and volume of theinstrument by means of 22 microstrip patch array antennas. The attenuation and phase shift produced by Korean short-grainrough rice, brown rice, and barley were analyzed to estimate the relationships between moisture density in the grain and theattenuation and phase shift. Second- and third-order polynomial attenuation models were a better measure of moisture densitythan were phase shift models. A grain moisture meter using microwave attenuation in free-space was constructed. A prototypegrain moisture meter consisting of a 10.5 GHz oscillator, patch array antennas, isolator, detector, and digital voltmeterprovided a coefficient of determination, standard error of prediction (SEP), and bias of 0.975, 0.62% moisture content, and-0.05% moisture content, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
