Comparing unloaded Q-factor of a high-Q dielectric resonator measured using the transmission mode and reflection mode methods involving S-parameters circle fitting

Conference Publication ResearchOnline@JCU

Leong, K.;Mazierska, J.;Jacob, M.V.;Ledenyov, D.;Batt, S.

Abstract

A comparative study of unloaded Q-factor measurements of a TE011 mode sapphire dielectric resonator with unloaded Q-factor value of 731,000 at a frequency of 10 GHz and temperature of 65 K using two best Q-factor measurement methods are presented. The transmission (TMQF) and reflection methods are based on relevant multifrequency S-parameter measurements and circle-fitting procedures to compute the unloaded Q-factor of the resonator. For accurate comparison of the methods, a delay compensation procedure (introduced in the TMQF technique to remove delay due to noncalibrated cables) has been applied also to the reflection data.

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IEEE MTT-S International Microwave Symposium

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ISBN/ISSN

0149-645X

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Issue

2002

Pages Count

Location

Seattle, WA, USA

Publisher

IEEE

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DOI

10.1109/MWSYM.2002.1012178