Acoustic surface wave devices
US4023124A · kind A · utility
12Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1975 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Jul 29, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/14573
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A length weighted interdigital transducer has .lambda./2 spaced electrodes within the overlap region. Outside the overlap region, the overlapping .lambda./2 spaced electrodes are connected to the bus bars by pairs of .lambda./4 spaced electrodes and extra "dummy" pairs of .lambda./4 spaced electrodes are also connected to the bus bars. The .lambda./2 spaced electrodes give a good manufacturing yield, and the .lambda./4 spaced pairs of electrodes and pairs of dummy electrodes provide compensation for wavefront distortion combined with low "interactions."
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.