Transducer structure for source suppression in saw filter devices
US11606079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2019 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | May 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transducer structure for a surface acoustic wave device, comprising a pair of inter-digitated comb electrodes, wherein the pair of inter-digitated comb electrodes comprises neighboring electrode means belonging to different comb electrodes and having a pitch p being defined as the edge-to-edge electrode means distance between two neighboring electrode means, the pitch p satisfying the Bragg condition; characterized in that the pair of inter-digitated comb electrodes comprises at least one region in which two or more neighboring electrode means belong to the same comb electrode while having an edge-to-edge distance to each other corresponding to the pitch p. The present disclosure relates also to a surface acoustic wave filter device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.