Decoupled stacked bulk acoustic resonator-based band-pass...

Details Decoupled stacked bulk acoustic resonator-based band-pass... Decoupled stacked bulk acoustic resonator-based band-pass...

2007-07-10

2007-07-10

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S189000, C333S192000

Reexamination Certificate

active

11069409

ABSTRACT:
The band-pass filter has first terminals, second terminals, a first decoupled stacked bulk acoustic resonator (DSBAR), a second DSBAR, and an electrical circuit connecting the first DSBAR and the second DSBAR in series between the first terminals and the second terminals. Each DSBAR has a first film bulk acoustic resonator (FBAR), a second FBAR and an acoustic decoupler between the FBARs. Each FBAR has opposed planar electrodes and a piezoelectric element between the electrodes.

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