WHEAT PERMITTIVITY MEASUREMENTS IN FREE-SPACE

Authors
KRASZEWSKI AW TRABELSI S NELSON SO
Citation
Aw. Kraszewski et al., WHEAT PERMITTIVITY MEASUREMENTS IN FREE-SPACE, The Journal of microwave power and electromagnetic energy, 31(3), 1996, pp. 135-141
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
The Journal of microwave power and electromagnetic energy → ACNP
ISSN journal
08327823
Volume
31
Issue
3
Year of publication
1996
Pages
135 - 141
Database
ISI
SICI code
0832-7823(1996)31:3<135:WPMIF>2.0.ZU;2-2
Abstract
Requirements for a free-space microwave transmission measurement syste m for determining the permittivity of grain are analyzed. Experimental verification of these requirements is provided for two cultivars of h ard red winter wheat of various densities, moisture contents and tempe ratures 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%.