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- W2085934340 abstract "This paper describes the realisation and characterization of Bulk Acoustic wave resonators by using (Ba,Sr)TiO <inf xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>3</inf> (BST) as active material. As BST is electrostrictive, it requires a dc voltage to exhibit an electromechanical coupling. Resonances variations versus the dc field are observed and analyzed by using an analytical model based on acoustic propagation. This study proves that BST can exhibit a high electromechanical coupling reaching 8.5% which is higher than Aluminium Nitride, the standard material for acoustic resonators in the GHz frequency range. Moreover, this simple test vehicle allows extracting the frequency variation experienced by BST. Due to non negligible second order effects as electrostriction, dielectric and stiffness non linearities, these tunable features are highly desirable for tunable filters. A final simulation shows that tunable passband filters could be obtained by using BST based resonators." @default.
- W2085934340 created "2016-06-24" @default.
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- W2085934340 date "2010-04-01" @default.
- W2085934340 modified "2023-09-25" @default.
- W2085934340 title "Electrostrictive thin films for RF acoustic resonators" @default.
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- W2085934340 doi "https://doi.org/10.1109/eftf.2010.6533655" @default.
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