Double-mode surface-acoustic-wave (DMS) filter having a transition region with a partly uniform geometric property
US12395148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2022 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Sep 14, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6493
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for filtering is disclosed that implements a double-mode surface-acoustic-wave filter having a transition region with a partly uniform geometric property. In an example aspect, the double-mode surface-acoustic-wave filter includes at least one interdigital transducer with multiple fingers. The multiple fingers include a first set of fingers having a geometric property and a second set of fingers. The second set of fingers is positioned adjacent to the first set of fingers and is associated with an outer edge of the at least one interdigital transducer. The geometric property across a subset of the second set of fingers is substantially uniform. A value of the geometric property across the subset of the second set of fingers is different than a value of the geometric property across the first set of fingers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.