Mesure de la permittivité complexe de liquides de référence pour la détermination du débit d’absorption spécifique (DAS)

Autor:	A. Litwin, D. Allal
Rok vydání:	2014
Předmět:	Permittivity Physics Measure (data warehouse) Acoustics Specific absorption rate Field strength General Medicine Network analyser Coaxial Electrical impedance Metrology
Zdroj:	Revue française de métrologie. :21-27
ISSN:	1776-3215 1772-1792
DOI:	10.1051/rfm/2014002
Popis:	This paper presents our work for the measurement of the complex permittivity of liquids, carried out in the framework of a European Metrology research project entitled “Traceable measurement of field strength and SAR for the Physical Agents Directive”. One of the aims of this project was to establish the traceability of the specific absorption rate measurements to the SI up to 10 GHz. We use a vector network analyser to measure the S 21 parameter of coaxial cells containing the liquid under test (a reference liquid or an equivalent tissue liquid). The method does not require the network analyser to be calibrated in terms of impedance. In fact, only the length of the coaxial cell and the working frequency need to be known.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::38234bc74b8e54f2b55c5801208de034 https://doi.org/10.1051/rfm/2014002 Zobrazit plný text záznamu