Patents by Inventor Bertrand Dubus
Bertrand Dubus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11894830Abstract: A surface acoustic wave device includes at least one transducer; two acoustic reflectors disposed on either side of the at least one transducer so as to form a cavity, each acoustic reflector comprising an array of electrodes in the form of lines parallel with each other, each array comprising a subset of electrodes connected to a reference potential denoted mass defining a first connection type, and a subset of electrodes that are not connected to any potential, i.e. that have a floating connection defining a second connection type; at least one switching circuit configured to modify the distribution of the connections of at least one part of the electrodes of each array between the different connection types.Type: GrantFiled: December 27, 2019Date of Patent: February 6, 2024Assignees: THALES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SOITEC SA, YNCREA HAUTS DE FRANCE ISEN LILLE, UNIVERSITE DE LILLE, ECOLE CENTRALE DE LILLE, UNIVERSITE POLYTECHNIQUE HAUTS-DE-FRANCEInventors: Thi Mai Pham Colomban, Claude Prévot, Paolo Martins, Anne-Christine Hladky-Hennion, Bertrand Dubus, Marianne Sagnard, Thierry Laroche, Sylvain Ballandras, Charles Croenne
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Publication number: 20220060173Abstract: A surface acoustic wave device: includes at least one transducer; two acoustic reflectors disposed on either side of the at least one transducer so as to form a cavity, each acoustic reflector comprising an array of electrodes in the form of lines parallel with each other, each array comprising a subset of electrodes connected to a reference potential denoted mass defining a first connection type, and a subset of electrodes that are not connected to any potential, i.e. that have a floating connection defining a second connection type; at least one switching circuit configured to modify the distribution of the connections of at least one part of the electrodes of each array between the different connection types.Type: ApplicationFiled: December 27, 2019Publication date: February 24, 2022Inventors: Thi Mai PHAM COLOMBAN, Claude PRÉVOT, Paolo MARTINS, Anne-Christine HLADKY- HENNION, Bertrand DUBUS, Marianne SAGNARD, Thierry LAROCHE, Sylvain BALLANDRAS, Charles CROENNE
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Patent number: 8212324Abstract: A Micro Electro Mechanical Systems resonance device includes a substrate, and an input electrode, connected to an alternating current source having an input frequency. The device also includes an output electrode, and at least one anchoring structure, connected to the substrate. The device further includes a vibratile structure connected to an anchoring structure by at least one junction, having a natural acoustic resonant frequency. The vibration under the effect of the input electrode, when it is powered, generates, on the output electrode, an alternating current wherein the output frequency is equal to the natural frequency. The vibratile structure and/or the anchoring structure includes a periodic structure. The periodic structure includes at least first and second zones different from each other, and corresponding respectively to first and second acoustic propagation properties.Type: GrantFiled: April 6, 2009Date of Patent: July 3, 2012Assignee: STMicroelectronics SAInventors: Gregory Caruyer, Karim Segueni, Pascal Ancey, Bertrand Dubus
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Patent number: 7804383Abstract: A coupled Lamb wave resonator filter includes first and second Lamb wave resonators. The first Lamb wave resonator includes a first resonant layer, and first and second electrodes on opposite sides of the first resonant layer. The second Lamb wave resonator includes a second resonant layer, and third and fourth electrodes on opposite sides of the second resonant layer. One of the sides of the first resonant layer belongs to a plane parallel to a plane corresponding to one of the sides of the second resonant layer. Both planes pass through the third and fourth electrodes of the second Lamb wave resonator. A periodic lattice acoustically couples the first and second resonant layers.Type: GrantFiled: August 27, 2007Date of Patent: September 28, 2010Assignee: STMicroelectronics SAInventors: Alexandre Volatier, Pascal Ancey, Bertrand Dubus
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Publication number: 20090289314Abstract: A Micro Electro Mechanical Systems resonance device includes a substrate, and an input electrode, connected to an alternating current source having an input frequency. The device also includes an output electrode, and at least one anchoring structure, connected to the substrate. The device further includes a vibratile structure connected to an anchoring structure by at least one junction, having a natural acoustic resonant frequency. The vibration under the effect of the input electrode, when it is powered, generates, on the output electrode, an alternating current wherein the output frequency is equal to the natural frequency. The vibratile structure and/or the anchoring structure includes a periodic structure. The periodic structure includes at least first and second zones different from each other, and corresponding respectively to first and second acoustic propagation properties.Type: ApplicationFiled: April 6, 2009Publication date: November 26, 2009Applicant: STMicroelectronics SAInventors: Gregory CARUYER, Karim Segueni, Pascal Ancey, Bertrand Dubus
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Patent number: 7586391Abstract: A switchable filter may include a first acoustic resonator including first electrodes, and a first resonant layer between the first electrodes and having electrostrictive material. The switchable filter may further include a second acoustic resonator including second electrodes, and a second resonant layer between the second electrodes and having electrostrictive material. The second acoustic resonator may be acoustically coupled with the first acoustic resonator. At least one of the first electrodes and at least one of the second electrodes may be arranged between the first resonant layer and the second resonant layer. The electrostrictive material may adjust a resonance and a filter switching of the first and second acoustic resonators as a function of a control voltage applied to terminals of the first and second acoustic resonators. Two electrodes from one of the first electrodes and the second electrodes may be filter input electrodes.Type: GrantFiled: August 27, 2007Date of Patent: September 8, 2009Assignee: STMicroelectronics SAInventors: Alexandre Volatier, Pascal Ancey, Bertrand Dubus
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Publication number: 20080129416Abstract: A switchable filter may include a first acoustic resonator including first electrodes, and a first resonant layer between the first electrodes and having electrostrictive material. The switchable filter may further include a second acoustic resonator including second electrodes, and a second resonant layer between the second electrodes and having electrostrictive material. The second acoustic resonator may be acoustically coupled with the first acoustic resonator. At least one of the first electrodes and at least one of the second electrodes may be arranged between the first resonant layer and the second resonant layer. The electrostrictive material may adjust a resonance and a filter switching of the first and second acoustic resonators as a function of a control voltage applied to terminals of the first and second acoustic resonators. Two electrodes from one of the first electrodes and the second electrodes may be filter input electrodes.Type: ApplicationFiled: August 27, 2007Publication date: June 5, 2008Applicant: STMicroelectronics SAInventors: Alexandre VOLATIER, Pascal Ancey, Bertrand Dubus
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Publication number: 20080048804Abstract: A coupled Lamb wave resonator filter includes first and second Lamb wave resonators. The first Lamb wave resonator includes a first resonant layer, and first and second electrodes on opposite sides of the first resonant layer. The second Lamb wave resonator includes a second resonant layer, and third and fourth electrodes on opposite sides of the second resonant layer. One of the sides of the first resonant layer belongs to a plane parallel to a plane corresponding to one of the sides of the second resonant layer. Both planes pass through the third and fourth electrodes of the second Lamb wave resonator. A periodic lattice acoustically couples the first and second resonant layers.Type: ApplicationFiled: August 27, 2007Publication date: February 28, 2008Applicant: STMicroelectronics SAInventors: Alexandre Volatier, Pascal Ancey, Bertrand Dubus