Surface acoustic wave device utilizing opposite propagation direction regions and resonant mode coupling
US6842090B2 · kind B2 · utility
1Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2001 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/14597
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Transducers are connected in parallel on a piezoelectric substrate. Each of the transducers is constituted of RSPUDTs. The RSPUDTs include SPUDTs that are opposed to each other such that their propagation directions are opposite to each other. The SPUDTs have a unidirectional electrode structure having a propagation characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.