Invention Grant
- Patent Title: Bulk acoustic resonator structure comprising hybrid electrodes
- Patent Title (中): 包括混合电极的体声波谐振器结构
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Application No.: US12748640Application Date: 2010-03-29
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Publication No.: US08390397B2Publication Date: 2013-03-05
- Inventor: Tiberiu Jamneala , Richard C. Ruby
- Applicant: Tiberiu Jamneala , Richard C. Ruby
- Applicant Address: SG Singapore
- Assignee: Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- Current Assignee: Avago Technologies Wireless IP (Singapore) Pte. Ltd.
- Current Assignee Address: SG Singapore
- Main IPC: H03H9/70
- IPC: H03H9/70 ; H03H9/54

Abstract:
In accordance with a representative embodiment, a BAW resonator structure, comprises a first BAW resonator, comprising: a first lower electrode having a first electrical resistance; a first upper electrode having a second electrical resistance; and a first piezoelectric layer disposed between the first lower electrode and the first upper electrode. The BAW resonator structure also comprises a second BAW resonator, comprising: a second lower electrode having the second electrical resistance; a second upper electrode having the first electrical resistance; and a second piezoelectric layer disposed between the second lower electrode and the second upper electrode. The BAW resonator structure also comprises an acoustic coupling layer disposed between the first BAW resonator and the second BAW resonator. The first electrical resistance is less than the second electrical resistance. An communication device comprising a coupled resonator filter (CRF) is also disclosed.
Public/Granted literature
- US20110237204A1 BULK ACOUSTIC RESONATOR STRUCTURE COMPRISING HYBRID ELECTRODES Public/Granted day:2011-09-29
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