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A Microwave Measurement System for Measurement of Dielectric Properties

Johan Winges (Institutionen för signaler och system, Signalbehandling) ; Livia Cerullo (Institutionen för signaler och system, Signalbehandling) ; Thomas Rylander (Institutionen för signaler och system, Signalbehandling) ; Tomas McKelvey (Institutionen för signaler och system, Signalbehandling) ; Lubomir Gradinarsky ; Staffan Folestad ; Mats Viberg (Institutionen för signaler och system, Signalbehandling)
AntennEMB, 11-12 March, Göteborg (2014)
[Konferensbidrag, poster]

We present a prototype of a microwave measurement system for the estimation of dispersive dielectric properties. The measurement system consists of a metal cavity that features a measurement region in the center formed by the intersection of six rectangular waveguides. The waveguides are terminated by adapters connected to coaxial cables. We exploit the frequency band 2.7-5.1 GHz and a connected network analyzer and switch allows for automatic measurements of the 6-by-6 scattering matrix S. We estimate the complex effective permittivity of densely packed MCC (micro-crystalline-cellulose) pellets over frequency for different moisture contents. This material is used in pharmacutical processes.



Denna post skapades 2014-05-16. Senast ändrad 2016-02-29.
CPL Pubid: 198160