Acoustic filters with shared acoustic tracks and cascaded series resonators
US12348216B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 14, 2022 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Jul 13, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic filter device includes first and second series resonators and at least one shunt resonator, each shunt resonator electrically coupled to the first series resonator or the second series resonator. Each of the first and second series resonators includes respective first and second sub-resonators electrically connected in series, The first sub-resonators of the first and second series resonators are acoustically coupled along a first shared acoustic track. The second sub-resonators of the first and second series resonators are acoustically coupled along a second shared acoustic track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.