Band pass filtering circuit fitted with acoustic resonators
US7525400B2 · kind B2 · utility
1Cited by
18References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Apr 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/58
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A band pass filtering circuit based on a quadripole includes a serial branch having a first acoustic resonator presenting a frequency of resonance and a frequency of anti-resonance and mounted in serial with a first capacitor; a parallel branch having a second acoustic resonator resulting from the same manufacturing process as the first resonator and mounted in parallel with a second capacitor of identical value to that the first capacitor. The filtering circuit is particularly but not exclusively adapted to the realization of integrated filtering circuits used in mobile telephony.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.