Isotropic acoustic wave substrate
US4707631A · kind A · utility
5Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Jul 17, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02559
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave (SAW) diffraction-effect or interference-effect device with a highly isotropic substrate having a high coupling coefficient and low attenuation losses. The use of X-propagating rotated-Y-cut lithium niobate as the SAW substrate, with the Y rotation angle selected at 121 degrees, provides a practically isotropic material, with a high coupling coefficient and relatively low attenuation losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.