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

Abstrakt

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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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT nr 69, strony 2248 - 2257,
ISSN: 0018-9456
Język:
angielski
Rok wydania:
2020
Opis bibliograficzny:
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:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/tim.2019.2922749
Weryfikacja:
Politechnika Gdańska

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