Microwave conductivity and permittivity of moisture laden soybean seed

Author

Mane, Vaishali ; Puri, Vijaya

Author_Institution

Dept. of Phys., Shivaji Univ., Kolhapur

fYear

2008

fDate

21-24 Nov. 2008

Firstpage

168

Lastpage

170

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/AMTA.2008.4763048

Filename

4763048