Transformer filter with notch
US12388421B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2023 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Oct 11, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2011/0488
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A device includes a filter circuit having both a transformer and a notch filter. The notch filter is formed via capacitive cross-coupling of windings of the transformer. The transformer includes a first winding with an input terminal and an output terminal and a second winding with an input terminal and an output terminal. The notch filter is formed by coupling a first capacitor between the input terminal of the first winding and the output terminal of the second winding, and by coupling a second capacitor between the output terminal of the first winding and the input terminal of the second winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.