Microwave complex index of refraction of
A. L. Dzardanov 1, V. V. Tikhonov 2,
D. A. Boyarskii 2, O. N. Polyakova 1, G. N.
Pedagogical State University
Research Institute (IKIRAN), Moscow
September 25, 2012
Abstract: The paper discusses results of studies of complex dielectric
permittivity of a number of ore minerals (magnetite, hematite, sphalerite,
chalcopyrite, pyrite and ilmenite) and associate barren minerals (labradorite
and oligoclase) in copper ore. Techniques to measure the reflection power and
transmission coefficient of plain-parallel samples of minerals in the frequency
range of 12....145 GHz are described, as well as computation methods and
results for dielectric characteristics of the minerals based on the obtained
experimental data. Approximation expressions are presented for the real and
imaginary parts of complex dielectric permittivity of the minerals depending on
radiation frequency in the range of 12…145 GHz.
Authors express sincere gratitude to the companies of Open
Company TECHNOROS and Open Company RADOS (Krasnoyarsk) for given samples of
The work was supported by
FTP "Scientific and scientific-pedagogical personnel of innovative
Russia" for 2009-2013 years, by the Russian Foundation for Basic Research (project
N 10-05 00037).
Key words: electrodynamic model, minerals, microwave radiation, reflectivity,
transmissivity, complex dielectric permittivity.