Bulk acoustic wave filter device and a method for trimming a...

Details Bulk acoustic wave filter device and a method for trimming a... Bulk acoustic wave filter device and a method for trimming a...

2008-07-01

2010-11-16

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S189000

Reexamination Certificate

active

07834720

ABSTRACT:
A bulk acoustic wave (BAW) filter device includes at least one first serial BAW resonator, at least one first shunt BAW resonator, at least one second serial BAW resonator or at least one second shunt BAW resonator. The resonance frequencies of the first and the second serial BAW resonators or the resonance frequencies of the first and the second shunt BAW resonators are detuned with respect to each other.

REFERENCES:
patent: 6864619 (2005-03-01), Aigner et al.
patent: 7339445 (2008-03-01), Aigner et al.
patent: 7439824 (2008-10-01), Aigner et al.
patent: 2003/0179053 (2003-09-01), Aigner et al.

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