Band reject filters
US6924715B2 · kind B2 · utility
33Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Sep 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6493
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Acoustic resonators such as surface acoustic wave (SAW) devices and thin film bulk acoustic resonators (FBAR) can be configured to produce a band reject filter. Such a filter overcomes the insertion loss and power handling limitations of conventional band pass configurations and as such can be used in power amplifier and duplexer applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.