Boundary acoustic wave device
US7453184B2 · kind B2 · utility
9Cited by
8References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Mar 4, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0222
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A boundary acoustic wave device includes a LiNbO3 substrate defining a first medium layer having a relatively high sound velocity and a SiO2 film defining a second medium layer having a relatively low sound velocity, an electroacoustic transducer and reflectors disposed between the first medium layer and the second medium layer, and recess portions and/or protrusion portions provided in the upper surface of the SiO2 film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.