Bulk acoustic resonator electrical impedance transformers
US7855618B2 · kind B2 · utility
24Cited by
265References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2008 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Jun 5, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/583
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.