Boundary acoustic wave device
US7323803B2 · kind B2 · utility
6Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Sep 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0222
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A boundary acoustic wave device includes a dielectric body disposed over one surface of a LiTaO3 piezoelectric body, and an electrode including an IDT and reflectors at the boundary between the piezoelectric body and the dielectric body. The thickness of the electrode is set so that the acoustic velocity of the SH boundary acoustic waves is less than the acoustic velocities of slow transverse waves propagating in the dielectric body and slow transverse waves propagating in the piezoelectric body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.