Title :
Sorting biological objects with microwave resonant cavities
Author :
Kraszewski, Andrzej W. ; Nelson, Stuart O.
Author_Institution :
US Dept. of Agric., Athens, GA, USA
Abstract :
It is shown how microwave resonators can be used as sensors for sorting dielectric objects. Differences in volume or mass can be distinguished among objects of irregular shape but of uniform dielectric properties. Moisture content, or other permittivity-dependent qualities can also be distinguished independent of mass or volume when objects are of uniform shape. Fundamental principles of the shape-independent and size-independent measurements are discussed, and experimental results are given
Keywords :
biological techniques and instruments; cavity resonators; dielectric measurement; electric sensing devices; microwave measurement; moisture measurement; biological objects; irregular shape; microwave resonant cavities; moisture measurement; sensors; sorting dielectric objects; uniform dielectric properties; Dielectric constant; Dielectric measurements; Frequency measurement; Moisture measurement; Permittivity measurement; Q factor; Resonance; Resonant frequency; Shape measurement; Sorting;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1991. IMTC-91. Conference Record., 8th IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-87942-579-2
DOI :
10.1109/IMTC.1991.161535
