Filter system with bulk wave resonator having a reflection...

Details Filter system with bulk wave resonator having a reflection... Filter system with bulk wave resonator having a reflection...

2005-12-13

2005-12-13

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S189000, C310S335000

Reexamination Certificate

active

06975182

ABSTRACT:
The invention relates to a filter device equipped with at least one bulk acoustic wave resonator, which comprises a resonator unit and a reflection unit. The resonator unit comprises a first (3) and a second electrode (5) together with a textured piezoelectric layer (4) between the first (3) and second (5) electrodes.

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patent: 9816957 (1998-04-01), None

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