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KTN ferroelectric thin-films: Application to the realization of tunable microwave devices

Abstract : Interdigital capacitors were fabricated on KTa0.5Nb0.5O3/Sapphire substrate. Since their measurements demonstrated the high tuning factor of KTNs, we designed and fabricated three distributed phase shifters. To our knowledge, they are the first phase-shifters realized on KTN thin films at microwave frequencies. These circuits present interesting phase-shifts, but their Figures of Merit are weakened by high KTN dielectric losses mainly responsible for the observed insertion losses; thus, in a near future our investigations will mainly focused on this issue.
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https://hal.univ-brest.fr/hal-00484560
Contributor : Vincent Laur <>
Submitted on : Tuesday, May 18, 2010 - 3:50:20 PM
Last modification on : Wednesday, August 5, 2020 - 3:46:36 AM

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  • HAL Id : hal-00484560, version 1

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Vincent Laur, Arnaud Moussavou, Anthony Rousseau, Gérard Tanné, Paul Laurent, et al.. KTN ferroelectric thin-films: Application to the realization of tunable microwave devices. European Microwave Conference, Sep 2006, Manchester, United Kingdom. pp.835-837. ⟨hal-00484560⟩

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