Band reject filters
US6710677B2 · kind B2 · utility
23Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Feb 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6483
- 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.