Bulk acoustic resonator electrical impedance transformers

Details Bulk acoustic resonator electrical impedance transformers Bulk acoustic resonator electrical impedance transformers

2008-04-30

2010-12-21

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S189000

Reexamination Certificate

active

07855618

ABSTRACT:
An electrical impedance transformer comprises a first film bulk acoustic resonator (FBAR), having a first electrical impedance and a first resonance frequency. The electrical impedance transformer also comprises: a second FBAR, having a second electrical impedance and a second resonance frequency, and being disposed over the first FBAR. The electrical impedance transformer also includes a decoupling layer disposed between the first and the second FBARs. The first electrical impedance differs from the second electrical impedance and the first and second resonance frequencies are substantially the same.

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