论文信息 - Time domain reflectometry of glass beads/magnetite mixtures: A time and frequency domain study

Time domain reflectometry of glass beads/magnetite mixtures: A time and frequency domain study

The measurements of the time domain reflectometry (TDR) signal propagating along a coaxial probe, filled with dry mixtures of glass beads and magnetite, are analyzed for deriving the attenuation factor α and the bandwidth. Samples with different percentages (5%–25%) of magnetite are considered. The α values are obtained by two different methods: (i) wave amplitude at the second reflection, (ii) electromagnetic parameters and widths of the passing bands. The two methods provide consistent α values within the experimental uncertainties. The agreement supports the possibility of measuring the attenuation factor from the second TDR reflection, for anhydrous samples similar to the investigated mixtures.

Alberto De Santis | Elena Pettinelli | Andrea Di Matteo | Giuliano Vannaroni | Elisabetta Mattei

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