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Composite model of the complex permittivity of cereal grain

✍ Scribed by A. Kraszewski; S.O. Nelson

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
543 KB
Volume
43
Category
Article
ISSN
0021-8634

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✦ Synopsis

Analytical expressions are presented for the relative permittivity and the loss factor of cereal grains as functions of bulk density, moisture content and frequency. Although models were developed by statistical techniques, terms of the expressions were selected for their physical significance. Values calculated from the model for corn, rye, oats, wheat, and barley are, on average, within 5% for the permittivity or dielectric constant and about 10% for the loss factor, when compared with measured values in the frequency range from 5 to 5000 MHz at moisture contents between 8 and 26%, wet basis.

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