Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances
US6271739A · kind A · utility
3Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6489
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave device supported by a package body. At least one surface acoustic wave element having interdigital electrodes disposed on a propagation path of a surface acoustic wave on the piezoelectric substrate. These interdigital electrodes include an input-side interdigital electrode connected to a ground pad on the package body and an output-side interdigital electrode connected to another ground pad on the package body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.