Sorting biological objects with microwave resonant cavities

Author

Kraszewski, Andrzej W. ; Nelson, Stuart O.

Author_Institution

US Dept. of Agric., Athens, GA, USA

fYear

1991

Firstpage

40

Lastpage

43

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1991. IMTC-91. Conference Record., 8th IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-87942-579-2

Type

conf

DOI

10.1109/IMTC.1991.161535

Filename

161535