Elastic wave device and ladder filter
US10418970B2 · kind B2 · utility
3Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Aug 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6496
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An elastic wave device includes an IDT electrode including first electrode fingers and second electrode fingers. In an intersecting portion, in which the first electrode fingers and the second electrode fingers interdigitate with each other, low-acoustic-velocity regions are disposed on both sides of a central region, high-acoustic-velocity regions are disposed outside of the low-acoustic-velocity regions, and the dimension of each of the low-acoustic-velocity regions in the electrode finger direction is not uniform in the elastic-wave propagation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.