测量复介电常数的线性偶极子天线系统分析

14th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2002. Conference Proceedings (IEEE Cat.No.02EX562) Pub Date : 2002-08-07 DOI:10.1109/MIKON.2002.1017854

A. Shostak, V. V. Zagoskin, L. Ligthart, V. N. Iljushenko

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引用次数: 4

摘要

本文研究了利用线性偶极子测量地下介质介电特性的方法。该方法基于对位于层状半空间表面上的由两个线性偶极子天线组成的系统的相互阻抗的分析。研究了在400 ~ 2000 MHz范围内均匀半空间情况下，两根天线的相互阻抗随表面高度和介电特性的变化规律。提出了一种测量均匀介质介电常数变化的方法。此外，还估计了表面缺陷(天线高度与其标称值的偏差)和校准曲线对测量天线无源电抗的依赖性的影响。对湿度分布较均匀的灰土进行了理论和实验结果的比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of a linear dipole antenna system for measurement the complex dielectric permittivity

In the paper, the use of linear dipoles for measuring the dielectric characteristics of subsurface media is examined. The given approach is based on the analysis of the mutual impedance of a system consisting of two linear dipole antennas and located above a surface of a layered half-space. The mutual impedance of two antennas depending on height above the surface and dielectric characteristics is investigated for the case of a homogeneous half-space in the 400 to 2000 MHz range. A measuring technique for the permittivity variations of homogeneous media is suggested. In addition, the influence of surface imperfections (deviations of the antenna heights from their nominal value) and dependence of calibration curves on the passive reactance in the measuring antenna are estimated. The comparison of theoretical and experimental results for the case of grey field soil with a rather uniform distribution of humidity is carried out.

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来源期刊

14th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2002. Conference Proceedings (IEEE Cat.No.02EX562)

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