Transversely-excited film bulk acoustic filters with symmetric layout
US10868513B2 · kind B2 · utility
117Cited by
14References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 2020 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Jul 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/13
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There are disclosed acoustic resonators and radio frequency filter devices. An acoustic resonator includes a piezoelectric plate having a front surface. A conductor pattern is formed on the front surface, the conductor pattern including interdigital transducers (IDTs) of one or more pairs of sub-resonators, each pair consisting of two sub-resonators. The two sub-resonators of each pair of sub-resonators are positioned symmetrically about a central axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.