Invention Application
- Patent Title: SWITCHABLE FILTER WITH RESONATORS
- Patent Title (中): 可调谐滤波器与谐振器
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Application No.: US11845362Application Date: 2007-08-27
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Publication No.: US20080129416A1Publication Date: 2008-06-05
- Inventor: Alexandre VOLATIER , Pascal Ancey , Bertrand Dubus
- Applicant: Alexandre VOLATIER , Pascal Ancey , Bertrand Dubus
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics SA
- Current Assignee: STMicroelectronics SA
- Current Assignee Address: FR Montrouge
- Priority: FR0653487 20060828
- Main IPC: H03H9/00
- IPC: H03H9/00 ; H01L41/22

Abstract:
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. Two electrodes from one of the first electrodes and the second electrodes may be filter output electrodes.
Public/Granted literature
- US07586391B2 Switchable filter with resonators Public/Granted day:2009-09-08
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