Simplified Approach for Broadband RF Testing of Low Loss Magneto-Dielectric Samples

Nilesh K. Tiwari; Surya P. Singh; Abhishek Kumar Jha; M. Jaleel Akhtar

doi:10.1109/tim.2019.2922749

Simplified Approach for Broadband RF Testing of Low Loss Magneto-Dielectric Samples

Abstract

In this paper, an attractive measurement techniqueis proposed to retrieve the broadband permittivity and permeabil-ity of the magneto-dielectric materials. The proposed techniqueis quite novel which mitigates the major problems associatedwith the conventional broadband RF material characterizationtechniques such as numerical instability and phase uncertaintywhen the length of the sample exceeds the integer multipleof half-wavelength. The approach adopted in this paper isquite unique as it alleviates the error normally caused by thesensitive phase measurement, since it only employs the relativeamplitude of the scattering parameters, thus minimizing themeasurement uncertainty. The proposed methodology here isbased on the development of a unified scheme for the retrieval ofdielectric and magnetic properties of magneto-dielectric samples,which is first tested for a number of reference samples usingthe numerically generated scattering coefficient data. Finally,the proposed technique is experimentally validated by measuringa number of standard samples over a broad microwave frequencyrange with the help of the coaxial line and the network analyzer.The dielectric and magnetic properties of samples retrieved usingthe proposed approach is always found to be in good agreementwith their actual values available in the literature

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Authors (4)

Nilesh K. Tiwari
Surya P. Singh
Abhishek Kumar Jha (formerly: Abhishek Jha) dr inż.
M. Jaleel Akhtar

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Keywords

BRANCH INDEX, BROADBAND CHARACTERIZATION,COAXIAL LINE, CONSTITUTIVE PARAMETERS, MAGNETO-DIELECTRIC

Details

Category:: Articles
Type:: artykuły w czasopismach
Published in:: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT no. 69, pages 2248 - 2257,
ISSN: 0018-9456
Language:: English
Publication year:: 2020
Bibliographic description:: Tiwari N., Singh S., Jha A., Akhtar M.: Simplified Approach for Broadband RF Testing of Low Loss Magneto-Dielectric Samples// IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT -Vol. 69,iss. 5 (2020), s.2248-2257
DOI:: Digital Object Identifier (open in new tab) 10.1109/tim.2019.2922749
Verified by:: Gdańsk University of Technology