DocumentCode
2107140
Title
Grain permittivity measurements in free space
Author
Kraszewski, A.W. ; Trabelsi, S ; Nelson, S.O.
Author_Institution
U.S Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, Athens, GA 30604-5677, U.S.A
Volume
2
fYear
1995
fDate
4-4 Sept. 1995
Firstpage
840
Lastpage
844
Abstract
Requirements for a free-space microwave transmission measurement system for determining the permittivity of grain are analyzed. Experimental verification of these requirements is provided for two cultivars of hard red winter wheat of various densities, moisture contents and temperatures in the frequency range from 10 to 18 GHz. Uncertainties in the dielectric constant determination are less than ± 1%, and those for the loss factor are less than ± 3%.
Keywords
Dielectric materials; Dielectric measurements; Extraterrestrial measurements; Frequency; Moisture; Permittivity measurement; Receiving antennas; Reflection; Reflector antennas; Transmitting antennas;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1995. 25th European
Conference_Location
Bologna, Italy
Type
conf
DOI
10.1109/EUMA.1995.337080
Filename
4137294
Link To Document