Abstract

ABSTRACT Adensity-independent function of grain dielectric properties was developed for use in measuring the moisture content of grain. A microwave system operating at 10.5 GHz was developed and evaluated that is capable of accurate and independent simultaneous measurement of the attenuation and phase shift introduced by grain occupying the space between two horn antennas. The dielectric parameters needed to predict moisture content can be calculated from attenuation and phase-shift data. Measurements of the dielectric properties of soybeans were made with the new system.

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