Surface acoustic wave device having plural ground conductor films in the housing cavity
US6566981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6483
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave device has: input external terminals, output external terminals and ground external terminals disposed on the outer peripheral surfaces of a container. In a cavity portion of the container, input pads, output pads and ground pads are respectively electrically connected to the input external terminals, the output external terminals and the ground external terminals. A plurality of SAW filter elements are housed in the cavity portion. A plurality of ground conductor films are respectively formed in areas where the SAW filter elements are respectively housed. The input, output and ground electrodes of the SAW filter elements are respectively connected to the input, the output and the ground pads. A metallic lid hermetically seals the cavity portion. Only one SAW filter element is connected to the same ground pad. All the round conductor films on which the SAW Liter elements are mounted are electrically separated from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.