Surface acoustic wave filter
US4420730A · kind A · utility
5Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1981 |
| Grant date | Dec 13, 1983 |
| Priority date | — |
| Expiry date | Oct 23, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/14547
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave filter which comprises: a substrate of piezoelectric material; a multistrip coupler for changing the track of a signal comprising a plurality of parallel conductive strips; at least two transducers disposed on one side of the multistrip coupler; at least another two transducers disposed on the other side of the multistrip coupler. The latter two transducers facing the former two transducers. One pair of the transducers which face each other through the multistrip coupler constitutes input transducers while the other pair of the transducers constitutes output transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.