Invention Grant
US08310129B2 Acoustic resonator comprising an electret and method of producing said resonator, application to switchable coupled resonator filters
有权
包括驻极体的声谐振器和产生所述谐振器的方法，应用于可切换耦合谐振滤波器
- Patent Title: Acoustic resonator comprising an electret and method of producing said resonator, application to switchable coupled resonator filters
- Patent Title (中): 包括驻极体的声谐振器和产生所述谐振器的方法，应用于可切换耦合谐振滤波器
-
Application No.: US12975974Application Date: 2010-12-22
-
Publication No.: US08310129B2Publication Date: 2012-11-13
- Inventor: Emmanuel Defay , Sebastien Boisseau , Ghislain Despesse , Brice Ivira , Alexandre Reinhardt
- Applicant: Emmanuel Defay , Sebastien Boisseau , Ghislain Despesse , Brice Ivira , Alexandre Reinhardt
- Applicant Address: FR Paris
- Assignee: Commissariat a l'energie atomique et aux energies alternatives
- Current Assignee: Commissariat a l'energie atomique et aux energies alternatives
- Current Assignee Address: FR Paris
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0959510 20091223
- Main IPC: H01L41/08
- IPC: H01L41/08
Abstract:
Acoustic resonator comprising an electret, and method of producing said resonator, application to switchable coupled resonator filters.The resonator comprises: at least one piezoelectric layer (30); electrodes (24, 26) on either side of this layer; and at least one electret layer (32) between the electrodes, to apply a permanent electric field to the piezoelectric layer. The intensity of this electric field is determined to shift the resonance frequency of the resonator by a desired value. The piezoelectric layer may contain electrical charges to itself constitute the electret layer.
Public/Granted literature
Information query
IPC分类:
