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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Cros, Dominique
University of Limoges
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2021Enhanced tunability and temperature-dependent dielectric characteristics at microwaves of K0.5Na0.5NbO3 thin films epitaxially grown on (100)MgO substratescitations
- 2021Hybridization of additive manufacturing processes to build ceramic/metal parts: Example of HTCCcitations
- 2020Hybridization of additive manufacturing processes to build ceramic/metal parts: Example of LTCCcitations
- 2016BST thin film capacitors integrated within a frequency tunable antenna
- 2014Intercomparison of Permittivity Measurement Techniques for Ferroelectric Thin Layerscitations
- 2011Microwave properties of semi-insulating silicon carbide between 10 and 40 GHz and at cryogenic temperaturescitations
- 2010Detrapping and retrapping of free carriers in nominally pure single crystal GaP, GaAs, and 4H–SiC semiconductors under light illumination at cryogenic temperaturescitations
- 2010High permeability and high permittivity heterostructures for the miniaturization of Radiofrequency components
- 2010A 380-420 MHz Two Pole tunable filter using new ferroelectric composite capacitors
- 2009Filter Synthesis using Shear Wave Piezoelectric Layer Resonators
- 2009Magnetodielectric Thin Film Heterostructure With High Permeability and Permittivity
- 2008Characterization of materials and mode structure of high-Q resonators using Bragg confined modes
- 2008Modified permittivity observed in bulk gallium arsenide and gallium phosphide samples at 50 K using the whispering gallery mode methodcitations
- 2008Low-loss materials for high -factor Bragg reflector resonatorscitations
- 2007Pulsed laser deposition o aluminum nitride thin films for FBAR applicationscitations
- 2003Characterization of a spherically symmetric fused-silica-loaded cavity microwave resonatorcitations
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document
Filter Synthesis using Shear Wave Piezoelectric Layer Resonators
Abstract
CONTEXT Acoustic waves in elastic solids are used in numerous applications in signal processing, including frequency generation, control and filtering in modern wireless communication systems. With the growing demand for multimedia and mobile applications, the new generations of telecommunication satellites require higher performances, higher functionalities and still stronger cost and size constraints.[1][2][3] In that context, BAW devices have many potentialities for the development of smart RF subsystems. For instance this technology is now used as alternative to Surface Acoustic Waves (SAW) filters in handset duplexers for UMTS and DCS standards around 2 GHz with Aluminum Nitride piezoelectric layers[12]. However, Aluminum Nitride is not suitable for large band applications, due to its electromechanical coupling coefficient. Its relative percentage, which represents the difference between resonant and antiresonant frequencies is 7%. This material is mainly processed for local oscillators or narrowband filtering operations (<5%) [4] [5]. That is why Lithium Niobate layers are studied to reach large band pass specifications for satellites requirements. It is essential to maximize the values of electromechanical coupling coefficient in Lithium Niobate, and to use wisely crystallographic cuts in order to perform the best results for longitudinal or transverse waves coupling larger difference between resonant and antiresonant frequencies. Thanks to Lithium Niobate shear wave propagation behavior, the goal will become synthesizing large bandpass frequency response of simple filters structures.