Solidly-mounted transversely-excited film bulk acoustic resonator
US12088272B2 · kind B2 · utility
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77References
20Claims
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Key dates
| Filing date | Jun 28, 2021 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Jul 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Resonator devices are disclosed. An acoustic resonator device includes a piezoelectric plate having front and back surfaces, an acoustic Bragg reflector on the back surface, and an interdigital transducer (IDT) on the front surface. The acoustic Bragg reflector reflects a primary shear acoustic mode excited by the IDT in the piezoelectric plate over a frequency range including a resonance frequency and an anti-resonance frequency of the acoustic resonator device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.