Title :
Microwave conductivity and permittivity of moisture laden soybean seed
Author :
Mane, Vaishali ; Puri, Vijaya
Author_Institution :
Dept. of Phys., Shivaji Univ., Kolhapur
Abstract :
Wave guide reflectometer and voltage standing wave ratio (VSWR) methods have been used to study the Ku band (13-18 GHz) microwave permittivity and conductivity of soybean seeds (Glycine Max). The percentage of moisture (M) was varied from 4% to ~ 61% (fully soaked) calculated on a wet weight basis. The transmittance of the waveguide decreases and reflectance increases due to the seed. The real permittivity epsiv\´ of the seed has a value of ~ 2.8 and epsiv" is ~ 1.5 at ~ 15 GHz. The permittivity decreases with decrease in moisture content in the seed.
Keywords :
granular materials; high-frequency effects; moisture; permittivity; Glycine Max; Wave guide reflectometer; frequency 13 GHz to 18 GHz; microwave conductivity; microwave permittivity; moisture laden soybean seed; voltage standing wave ratio methods; waveguide reflectance; waveguide transmittance; Conducting materials; Conductivity; Dielectric materials; Frequency; Material storage; Microwave devices; Microwave measurements; Moisture; Permittivity measurement; Reflectivity; Permittivity; microwave conductivity; reflectance; soybean seeds; transmittance;
Conference_Titel :
Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on
Conference_Location :
Jaipur
Print_ISBN :
978-1-4244-2690-4
Electronic_ISBN :
978-1-4244-2691-1
DOI :
10.1109/AMTA.2008.4763048
