Invention Grant
US07439824B2 Bulk acoustic wave filter and method for eliminating unwanted side passbands
有权
体声波滤波器和消除不需要的侧通带的方法
- Patent Title: Bulk acoustic wave filter and method for eliminating unwanted side passbands
- Patent Title (中): 体声波滤波器和消除不需要的侧通带的方法
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Application No.: US11069715Application Date: 2005-03-01
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Publication No.: US07439824B2Publication Date: 2008-10-21
- Inventor: Robert Aigner , Stephan Marksteiner
- Applicant: Robert Aigner , Stephan Marksteiner
- Applicant Address: DE
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE
- Agency: Coats & Bennett, P.L.L.C.
- Priority: EP04005574 20040309
- Main IPC: H03H9/00
- IPC: H03H9/00 ; H03H9/56 ; H03H9/205
Abstract:
A bulk acoustic wave (BAW) filter (40) is fabricated from thin film bulk acoustic wave resonators and a method eliminates unwanted side passbands. This BAW filter comprises a substrate (14) a resonator section (11) and an acoustic mirror section (12). Further it comprises a detuning component (31) positioned in the resonator section (11) to provide precise passband characteristics and an additional detuning component (41) in the acoustic mirror section (12) to suppress unwanted side-passband characteristics.
Public/Granted literature
- US20050200433A1 Bulk acoustic wave filter and method for eliminating unwanted side passbands Public/Granted day:2005-09-15
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