Coaxial-Cage Line for Geo-materials Electromagnetic Characterization

Sebastian Emanuel Lauro, Elisabetta Mattei, Barbara Cosciotti, Federico di Paolo, Elena Pettinelli

Abstract

We present the results obtained with a custom coaxial-cage line built to measure the complex dielectric permittivity and magnetic permeability of granular and/or liquid materials. The coaxial-cage line presents an open structure to facilitate the insertion and to control the compactness of granular materials. The measurements have been performed using a Vector Network Analyzer and the electromagnetic parameters of the samples have been retrieved through the Nicolson-Ross-Weir algorithm (in case of magnetic materials) or the Boughriet algorithm (in case of non-magnetic ones). The cell has been used to characterize the electromagnetic properties of some geo-materials (clay soils and magnetite samples). The electromagnetic parameters are shown as a function of frequency (1MHz-1GHz) and temperature (about 200-298K).

Keywords

Coaxial transmission line, Permeability measurements, Permittivity measurements, Geo-materials, Scattering parameters measurements.

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DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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