Acoustic wave devices
US4117424A · kind A · utility
10Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Mar 30, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/76
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A crystalline body having two or more domains interfacing at respective domain walls is utilized as an acoustic wave device. Input and output transducers and, in some embodiments, acoustic wave reflectors, are disposed on the crystalline body such that the delay experienced, or the path followed, by acoustic waves propagating between the input and output transducers is varied by varying the positions of the domain walls. This, in turn, is accomplished by way of control signals applied across the crystalline body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.