{"title":"Determination of dielectric properties and humidity of vermiculite using S-parameters","authors":"I. F. Dos Anjos, G. Boeck, S. Barbin","doi":"10.1109/APMC.2015.7413425","DOIUrl":null,"url":null,"abstract":"In the present study it is described the determination of the dielectric properties of a micaceous mineral, namely vermiculite, using S-parameters. AC conductivity, permittivity, loss tangent, and humidity were determined. The dependence of the dielectric constant and the humidity was investigated. Another important factor considered is the variation of the AC conductivity with frequency, which is strongly influenced by the behavior of the charge carriers for different frequencies and the material's losses. The technique addressed in this work, is based on the measured S-parameters of a microstrip line structure, followed by numerical calculations based on the Nicolson - Ross - Weir method. The presented method is accurate and can be used for further studies to understand the behavior of other minerals or soil when submitted to electromagnetic fields.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 Asia-Pacific Microwave Conference (APMC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APMC.2015.7413425","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
In the present study it is described the determination of the dielectric properties of a micaceous mineral, namely vermiculite, using S-parameters. AC conductivity, permittivity, loss tangent, and humidity were determined. The dependence of the dielectric constant and the humidity was investigated. Another important factor considered is the variation of the AC conductivity with frequency, which is strongly influenced by the behavior of the charge carriers for different frequencies and the material's losses. The technique addressed in this work, is based on the measured S-parameters of a microstrip line structure, followed by numerical calculations based on the Nicolson - Ross - Weir method. The presented method is accurate and can be used for further studies to understand the behavior of other minerals or soil when submitted to electromagnetic fields.
本文介绍了利用s参数测定云母矿物蛭石介电性能的方法。测定交流电导率、介电常数、损耗正切和湿度。研究了介电常数与湿度的关系。考虑的另一个重要因素是交流电导率随频率的变化,这受到不同频率下载流子的行为和材料损耗的强烈影响。在这项工作中解决的技术是基于测量的微带线结构的s参数,然后基于Nicolson - Ross - Weir方法进行数值计算。所提出的方法是准确的,可用于进一步的研究,以了解其他矿物或土壤在电磁场作用下的行为。