Reactance filter comprising acoustic waves resonators
US9614494B2 · kind B2 · utility
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5References
20Claims
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2038/146
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A reactance filter includes a series branch that includes a number of series impedance elements that are coupled in series and a number of parallel branches each having a parallel impedance element coupled to a respective node of the series branch. Each impedance element includes a resonator that works with acoustic waves. The resonators in the series branch include a first piezoelectric material and the resonators in the parallel branches include a second piezoelectric material that is different than the first piezoelectric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.