Bulk acoustic wave filter structure with conductive bridge forming electrical loop with an electrode
US11528007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2021 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Feb 16, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/564
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a Bulk Acoustic Wave (BAW) filter structure with a conductive bridge forming an electrical loop with an electrode for reduced electrical losses. In exemplary aspects disclosed herein, the BAW filter structure includes a transducer with electrodes, a piezoelectric layer between the electrodes, and at least one conductive bridge offset from at least a portion of one of the electrodes by an insulating volume. The conductive bridge forms a first electrical loop between a medial end and a distal end of the electrode. Such a configuration reduces electrical resistance, heat resistance, and/or ohmic losses for improved electrical loss of the BAW filter structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.