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arXiv · 1009.4277

Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials

Khattiya Chalapat·Kari Sarvala·Jian Li·G. S. Paraoanu
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Abstract

This paper presents a simple and effective wideband method for the determination of material properties, such as the complex index of refraction and the complex permittivity and permeability. The method is explicit (non-iterative) and reference-plane invariant: it uses a certain combination of scattering parameters in conjunction with group-velocity data. This technique can be used to characterize both dielectric and magnetic materials. The proposed method is verified experimentally within a frequency range between 2 to 18 GHz on polytetrafluoroethylene and polyvinylchloride samples. A comprehensive error and stability analysis reveals that, similar to other methods based on transmission/reflection measurement, the uncertainties are larger at low frequencies and at the Fabry-Perot resonances.

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Khattiya Chalapat, Kari Sarvala, Jian Li, G. S. Paraoanu. 2010-09-22. Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials. https://doi.org/10.1109/tmtt.2009.2027160

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