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

被引：13

作者：

Mattei, E

De Santis, A

Di Matteo, A

Pettinelli, E

Vannaroni, G

机构：

[1] Univ Tuscia, Fac Agr, DISA, I-01100 Viterbo, Italy

[2] Univ Tuscia, Fac Agr, DISA, I-01100 Viterbo, Italy

[3] INFM, I-01100 Viterbo, Italy

[4] Univ Roma Tre, Dipartimento Fis E Amaidi, I-00146 Rome, Italy

[5] INFM, I-00146 Rome, Italy

[6] CNR, Ist Fis Spazio Interplanetario, I-00133 Rome, Italy

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 22期

关键词：

D O I：

10.1063/1.1935029

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 alpha and the bandwidth. Samples with different percentages (5%-25%) of magnetite are considered. The alpha 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 alpha 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. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 18 条

[1] Dielectric spectroscopy by inverse modelling of time domain reflectometry wave forms [J].