Bulk acoustic wave filter and method for eliminating...

Details Bulk acoustic wave filter and method for eliminating... Bulk acoustic wave filter and method for eliminating...

2005-03-01

2008-10-21

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S189000

Reexamination Certificate

active

07439824

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.

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patent: WO 02/095939 (2002-11-01), None
Lakin, K.M. et al.; “Thin Film Resonator Technology”; Microelectronics Research Center; 41st Annual Frequency Control Symposium, 1987.

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