Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials

Details Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials Reference-Plane Invariant Method for Measuring Electromagnetic Parameters of Materials

2010-09-22

arxiv.org/abs/1009.4277v1

IEEE Trans. Microwave Theor. Tech. 57:2257,2009

Physics

Instrumentation and Detectors

12 pages, 21 figures

Scientific paper

10.1109/TMTT.2009.2027160

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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