Filter using lithium niobate and lithium tantalate transversely-excited film bulk acoustic resonators
US11329628B2 · kind B2 · utility
3Cited by
49References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Dec 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Acoustic filters are disclosed. A bandpass filter has a passband between a lower band edge and an upper band edge. The bandpass filter includes a plurality of transversely-excited film bulk acoustic resonators (XBARs) connected in a ladder filter circuit. The plurality of XBARs includes at least one lithium tantalate XBAR and at least one lithium niobate XBAR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.