Acoustic wave devices
US4247836A · kind A · utility
10Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Feb 22, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6433
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave resonator device includes two pairs of coupled spaced apart reflectors which define two resonant cavities. The two cavities are each provided with two interdigital transducers which provide intercavity coupling. Additional reactance coupling between the transducers in one cavity combines with the equivalent cavity reactance to provide series or parallel resonance at a selected pole frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.