发明授权
- 专利标题: Filtering circuit fitted with acoustic resonators
- 专利标题(中): 滤波电路配有声谐振器
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申请号: US11829549申请日: 2007-07-27
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公开(公告)号: US07696844B2公开(公告)日: 2010-04-13
- 发明人: Andreia Cathelin , Stéphane Razafimandimby , Andreas Kaiser
- 申请人: Andreia Cathelin , Stéphane Razafimandimby , Andreas Kaiser
- 申请人地址: FR Montrouge
- 专利权人: STMicroelectronics SA
- 当前专利权人: STMicroelectronics SA
- 当前专利权人地址: FR Montrouge
- 代理机构: Seed IP Law Group PLLC
- 代理商 Lisa K. Jorgenson; E. Russell Tarleton
- 优先权: FR0606919 20060728
- 主分类号: H03H9/54
- IPC分类号: H03H9/54
摘要:
A filtering circuit based on a lattice structure comprising a first and a second input and a first and second output. The circuit further comprises two series impedance and two parallel impedance which each comprises an acoustic resonator associated with two inductive and capacitive components which can be adjusted by a first control value. The second and fourth impedance comprise each an acoustic resonator associated to two inductive and capacitive components which are adjustable by means of a second control value. A control circuit generates the two control values which simultaneously comprise a common mode potential and a differential mode potential which allows the emergence of first and second pass bands which are usable for realizing two different bandpass filters.
公开/授权文献
- US20080024244A1 FILTERING CIRCUIT FITTED WITH ACOUSTIC RESONATORS 公开/授权日:2008-01-31
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