Acoustic surface wave devices
US3983515A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1974 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Oct 10, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic surface wave device comprising a monocrystalline body of piezoelectric material having a launching and receiving transducer applied to a planar ASW propagation surface. The piezoelectric material and the orientation of the propagation surface and the axial propagation direction relative to the crystal axes are selected to provide zero piezoelectric coupling between the transducers and a longitudinal axial bulk wave and that one of the two shear axial bulk waves that has substantially no component of particle motion perpendicular to said propagation surface. A method of manufacturing the aforesaid ASW device is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.