000			01416nam a2200181Ia 4500
008			220216s9999 xx 000 0 und d
100			_aChuah H T
245		0	_aMicrowave dielectric properties of rubber and oil palm leaf samples: Measurement and modelling
260			_bInternational Journal of Remote Sensing _c1997
300			_a2623-2639
500			_aSource Year: 1997
520			_aDielectric constants of leaves of rubber (Hevea brasiliensis) and oil palm (Elaeis guineensis) were measured at microwave frequency. Using a microcomputer-based automated system consisting of a Wiltron 360B vector network analyser, measurements were conducted based on the waveguide thin sheet technique. Leaf saples were inserted within waveguide sections, and the dielectric constants were calculated from the complex reflection coefficients. The measurements covered a frequency range of 4-18 GHz. In general, the dielectric constant of a leaf sample was a function of water content and frequency. Theoretical calculations from 3 dielectric mixing models were compared with the measurements. From these comparisons, the Debye-Cole dual-dispersion model showed the most promise for prediction of dielectric constants, if proper physical parameters of the model, such as bound and free-water volume fractions, were used.
650			_aRubber
700			_aChye Y H
700			_aKam S W
856			_uHOA
942			_cJS
999			_c62947 _d62947