Surface acoustic wave device
US7323802B2 · kind B2 · utility
0Cited by
8References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02574
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave device that can operate in alternate-phase mode and single-phase mode, and thus generate surface acoustic waves at two different frequencies. The device is based on a piezoelectric film deposited on an elastic substrate, and includes an electrode layer patterned as two interdigital electrodes and electrical source (2). The device is operated in alternate-phase mode by connecting the two electrodes to different ends of an electrical source (22). The device is operated in single-phase mode by connecting the two electrodes to the same end of an electrical source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.