Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials
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.
Cite
@article{arxiv.1009.4277,
title = {Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials},
author = {Khattiya Chalapat and Kari Sarvala and Jian Li and G. S. Paraoanu},
journal= {arXiv preprint arXiv:1009.4277},
year = {2010}
}
Comments
12 pages, 21 figures