Simplified Method of Measuring Magnetic Permeability Temperature Profile for RF Device Applications

Abstract:

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Ferrite is popular as a core material for RF transformers. Since transmission characteristics of RF transformers are affected by the core’s permeability, which has a large temperature dependence, the development of a method for measuring the core permeability temperature profile is important. In this study, a temperature profile measurement of ferrite core permeability has been investigated using a microstrip line method which has the advantage of the circuit being compact in size and therefore suitable for measuring temperature profiles. Based on the results measured with a sample ferrite core, the temperature dependence of RF transformer performance (isolation) is also discussed. Furthermore, basic results of experiments to compensate for the degradation in isolation is presented.

Info:

Periodical:

Edited by:

Pietro VINCENZINI, Vojislav V. MITIC, Alois LOIDL and Dino FIORANI

Pages:

118-123

DOI:

10.4028/www.scientific.net/AST.67.118

Citation:

A. Kuramoto et al., "Simplified Method of Measuring Magnetic Permeability Temperature Profile for RF Device Applications", Advances in Science and Technology, Vol. 67, pp. 118-123, 2010

Online since:

October 2010

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Price:

$35.00

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