Distributed feedback acoustic surface wave oscillator
US4025876A · kind A · utility
3Cited by
8References
5Claims
0Family size
Inventors
Key dates
| Filing date | Sep 12, 1975 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Sep 12, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B5/326
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic surface wave oscillator is constructed from a semiconductor-piezoelectric acoustic surface wave amplifier by providing appropriate perturbations at the piezoelectric boundary. The perturbations cause Bragg order reflections that maintain acoustic-wave oscillation under certain conditions of gain and feedback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.