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Tunable microwave components based on Kta1-xNbxO3 ferroelectric material

Abstract : We made tunable microwave ferroelectric interdigital capacitors (IDCs) and resonators with different KTaxNb1xO3 (KTN) materials. Measurement results highlighted interesting variations, i.e. about 9.27% at 2 GHz on the capacitance value, at low bias voltage (~15 kV/cm). This study enabled us to choose KTa0.5Nb0.5O3 among three KTN compositions because, at room temperature, it showed the best properties for achievement of tunable devices. To our knowledge, among the few circuits based on a ferroelectric thin film other than BaxSr1xTiO3 (BST) material, the ones we proposed demonstrate very promising performances for microwave applications. In the future, KTNs could compete with BSTs for tunable devices.
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https://hal.univ-brest.fr/hal-00484526
Contributor : Vincent Laur <>
Submitted on : Tuesday, May 18, 2010 - 3:27:30 PM
Last modification on : Wednesday, August 5, 2020 - 3:48:37 AM

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  • HAL Id : hal-00484526, version 1

Citation

Vincent Laur, Anthony Rousseau, Gérard Tanné, Paul Laurent, Fabrice Huret, et al.. Tunable microwave components based on Kta1-xNbxO3 ferroelectric material. European Microwave Conference, Oct 2005, Paris, France. pp.641-644. ⟨hal-00484526⟩

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