Microelectromechanical filter
US8471651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Oct 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/54
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A microelectromechanical filter is provided. The microelectromechanical filter includes an input electrode, an output electrode, one or several piezoelectric resonators, one or several high quality factor resonators, and one or several coupling beams. The input electrode and the output electrode are disposed on the piezoelectric resonators. The high quality factor resonator is silicon or of piezoelectric materials, and there is no metal electrode on top of the resonator. The coupling beam is connected between the piezoelectric resonator and the high quality factor resonator. The coupling beam transmits an acoustic wave among the resonators, and controls a bandwidth of filter. The microelectromechanical filter with low impedance and high quality factor fits the demand for next-generation communication systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.