Guided acoustic wave device
US10469050B2 · kind B2 · utility
5Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2003/0435
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave device includes a piezoelectric layer, an interdigital transducer, and a slow wave propagation overlay over a portion of the interdigital transducer. By providing electrode fingers of the interdigital transducer such that a portion of the width thereof is dependent on an electrode period, a desirable wave mode may be maintained in the acoustic wave device. Further, by varying a width of the slow wave propagation overlay based on the electrode period, the desirable wave mode may be further maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.