Material characterization in partially filled waveguides using inverse scattering and multiple sample orientations

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Sammanfattning

Abstract in Undetermined
We present a method aimed at reducing uncertainties and instabilities when characterizing materials in waveguide setups. The method is based on measuring the S parameters for three different orientations of a rectangular sample block in a rectangular waveguide. The corresponding geometries are modeled in a commercial full-wave simulation program, taking any material parameters as input. The material parameters of the sample are found by minimizing the squared distance between measured and calculated S parameters. The information added by the different sample orientations is quantified using the Cramer-Rao lower bound. The flexibility of the method allows the determination of material parameters of an arbitrarily shaped sample that fits in the waveguide.
Originalspråkengelska
Sidor (från-till)554-561
TidskriftRadio Science
Volym50
Nummer6
DOI
StatusPublished - 2015

Ämnesklassifikation (UKÄ)

  • Annan elektroteknik och elektronik

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