Title :
Investigating near-field measurements of the complex permittivity of granular materials with microstrip antennas
Author :
Trabelsi, Samir ; Nelson, Stuart O.
Author_Institution :
Dept. of Biol. & Agric. Eng., Georgia Univ., Athens, GA, USA
Abstract :
Near-field microwave measurements of the dielectric properties of wheat and soybeans with a pair of single-patch microstrip antennas are compared to those taken in the far field with a pair of focused-beam horn/lens antennas. Also, effects on the accuracy of predicting moisture content with a permittivity-based calibration function are discussed.
Keywords :
microstrip antennas; microwave measurement; moisture; permittivity measurement; complex permittivity measurement; dielectric properties measurement; far field; focused-beam horn-lens antennas; granular materials; microwaves; moisture content prediction; near-field measurements; permittivity-based calibration; single-patch microstrip antennas; soybeans; wheat; Antenna measurements; Dielectric materials; Dielectric measurements; Horn antennas; Lenses; Microstrip antennas; Microwave antennas; Microwave measurements; Optical materials; Permittivity measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351021
