Measurement of Dielectric Properties in Microwave Frequencies

R.K Das¹

1. Dept. of Physics, Charuchandra College, University of Calcutta, Kolkata, India.

Correspondence should be addressed to: rkdas_171171@rediffmail.com.

Section:Review Paper, Product Type: Isroset-Journal
Vol.6 , Issue.1 , pp.15-17, Feb-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i1.1517

Online published on Feb 28, 2018

Copyright © R.K Das . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
In this review paper dielectric constant of different types of soils, agricultural food materials and different types of stones have been discussed here. And different types of methods for determination of dielectric constant have also been discussed here. The dielectric constant of soil depends upon the moisture content of soil. Previous results shows bound water in soil water affects the dielectric properties of soil and relationship between dielectric properties with gravimetric water content is nonlinear. The factor affecting the dielectric properties of agricultural food materials are frequency, moisture content, temperature and density. Since moisture content is often the most important characteristic of agricultural products. The dielectric constant and loss factor of all food materials decreased with increasing frequency but increased with increasing temperature. In the case of marbles also the presence of moisture and impurities are the main factors affecting the dielectric properties. Agriya marble has highest dielectric constant and sandstone and limestone has the least. The increase in the percentage of impurity in the chemical composition of marbles affects dielectric property at low frequency region.

Key-Words / Index Term :
Dielectric, Marble, Agri-foods, Moisture content, Temperature, Frequency

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