Saw transducer with improved bus-bar design
US4999535A · kind A · utility
15Cited by
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4Claims
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Key dates
| Filing date | Sep 25, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Sep 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02944
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave (SAW) transducer comprises a piezoelectric substr, a pair of metal bus bars positioned on the substrate parallel to and separated from each other a preselected distance and a plurality of interdigital electrode fingers extending from each of the metal bus bars. A plurality of slots are positioned along each metal bus bar so that the bus bar metallization is reduced and the acoustic wave velocity is increased in the metal bus bar region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.