Surface acoustic wave filter device
US6919777B2 · kind B2 · utility
15Cited by
11References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Aug 15, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/16195
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave filter device includes a surface acoustic wave filter element having a ladder type circuit electrically connected and mechanically fixed to a package by a face down mounting method. A micro-strip line connected to series arm resonator and/or a parallel arm resonator is provided inside the package, whereby excellent filter characteristics are provided by the addition of the inductance component thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.