Surface acoustic wave resonator, filter, and communication device
US12316303B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2022 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jun 29, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6453
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave resonator, a filter and a communication device are provided. The surface acoustic wave resonator includes a piezoelectric material layer, an interdigital transducer and a reflective electrode structure; the piezoelectric material layer includes a first region and two second regions arranged in a first direction; the interdigital transducer is located at a side of the piezoelectric material layer; the reflective electrode structure is arranged in the same layer as the interdigital transducer; the first region is located between two second regions, the interdigital transducer is located in the first region, the reflective electrode structure is located in the second region, and the surface acoustic wave resonator further includes a groove located in the piezoelectric material layer, the groove is located in the second region, and is located at a side of the reflective electrode structure away from the interdigital transducer in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.