Bulk acoustic wave resonators with patterned mass loading layers
US12368427B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 12, 2024 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Mar 12, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/0442
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Aspects of this disclosure relate to bulk acoustic wave resonators with patterned mass loading layers. Two different bulk acoustic wave resonators of an acoustic wave filter and/or an acoustic wave die have respective patterned mass loading layers with different densities. The patterned mass loading layers contribute to the two different bulk acoustic wave resonators having different respective resonant frequencies. Related bulk acoustic wave devices, filters, acoustic wave dies, radio frequency modules, wireless communication devices, and methods are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.