Bulk acoustic wave resonator filter being digitally reconfigurable, with process
US8665038B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Dec 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/542
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A filtering circuit with BAW type acoustic resonators having at least a first quadripole and a second quadripole connected in cascade, each quadripole having a branch series with a first acoustic resonator of type BAW and a branch parallel with each branch having an acoustic resonator of type BAW, the first acoustic resonator having a frequency of resonance series approximately equal to the frequency of parallel resonance of the second acoustic resonator, the branch parallel of the first quadripole having a first capacitance connected in series with the second resonator and, in parallel with the capacitance, a first switching transistor to short circuit the capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.