Transducer for a filter arrangement with acoustic waves
US4774482A · kind A · utility
3Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Aug 19, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02842
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transducer for a filter arrangement with acoustic waves which includes a transducer 1 and 2 comprising groups (3, 4, 6 and 7) of alternating interdigitally spaced electrode fingers (10) in which the neighboring groups (3, 4 or, respectively, 4, 3 or, respectively, 6, 7) are arranged so that they are 80 degrees out of phase relative to each other at the fundamental frequency of the groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.