Invention Grant
- Patent Title: Filtering circuit fitted with acoustic resonators
- Patent Title (中): 滤波电路配有声谐振器
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Application No.: US11829549Application Date: 2007-07-27
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Publication No.: US07696844B2Publication Date: 2010-04-13
- Inventor: Andreia Cathelin , Stéphane Razafimandimby , Andreas Kaiser
- Applicant: Andreia Cathelin , Stéphane Razafimandimby , Andreas Kaiser
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics SA
- Current Assignee: STMicroelectronics SA
- Current Assignee Address: FR Montrouge
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; E. Russell Tarleton
- Priority: FR0606919 20060728
- Main IPC: H03H9/54
- IPC: H03H9/54

Abstract:
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.
Public/Granted literature
- US20080024244A1 FILTERING CIRCUIT FITTED WITH ACOUSTIC RESONATORS Public/Granted day:2008-01-31
Information query
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