Elastic wave filter device and duplexer
US9455682B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2015 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Apr 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an elastic wave filter device, an elastic wave filter element chip is mounted on a board. In the elastic wave filter element chip, a ladder filter including a plurality of series arm resonators and a plurality of parallel arm resonators are provided. In/on the board, a first inductor connected in parallel to the series arm resonator and a second inductor connected between the parallel arm resonators P1-P3 and a ground potential are provided. In/on the board, a shield electrode is located between the first inductor and the second inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.