FDFD based measurement of permittivity using an open-ended coaxial probe | ||
| Journal of Communication Engineering | ||
| مقاله 4، دوره 10، شماره 1 - شماره پیاپی 20، فروردین 2021، صفحه 51-64 اصل مقاله (831.23 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22070/jce.2022.15600.1206 | ||
| نویسندگان | ||
| Toktam Shaterzadeh_Bojd1؛ Seyed Mohammad Saeed Majedi* 2 | ||
| 1Computer and Communications Research Center, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 2Department of Electrical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| چکیده | ||
| In this paper, 2D-FDFD method is applied for measuring electrical properties of dielectric materials using an open-ended coaxial probe. A SMA connector with flange is used as the coaxial probe and the reflection coefficient from probe aperture in contact with dielectric is measured by a vector network analyzer. To convert the aperture-plane reflection coefficient to dielectric permittivity, first, the coaxial probe is modeled by the 2D-FDFD method and then the genetic algorithm is employed to solve the inverse problem. The accuracy of the proposed method is investigated by measuring the dielectric properties of three known materials. The mean absolute percentage errors are below 10% and the maximum absolute percentage error is below 12%. Thus, good agreement between measured and actual values are observed. | ||
| کلیدواژهها | ||
| FDFD method؛ open-ended coaxial probe؛ permittivity | ||
| مراجع | ||
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