Low-loss surface acoustic wave filter on quartz substrate with optimized cut
US6316861A · kind A · utility
13Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02551
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low-loss surface acoustic wave filter on a quartz substrate with optimized cutting. A range of cutting angles and directions of propagation of the waves on the quartz substrate are defined, making it possible to obtain high coefficients of reflection of the electrodes used in the filter. The range of cutting angles and directions of propagation of the waves are decisive factors for the making of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.