Enhanced low pass filter
US6978011B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2001 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Mar 29, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/1708
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An ADSL POTS splitter includes an enhanced low pass filter. The enhanced low pass filter includes a first filter capacitor, a first non-isolated inductor, a second non-isolated inductor, a first isolated inductor and a common mode choke. The second non-isolated inductor is connected to the first non-isolated inductor. A first winding of the second non-isolated inductor is connected in series with a first winding of the first non-isolated inductor. A second winding of the second non-isolated inductor connected in series with a second winding of the first non-isolated inductor. The first isolated inductor is connected to the first non-isolated inductor with a first winding of the first isolated inductor connected in series with the first winding of the first non-isolated inductor and to a first lead of the first filter capacitor. A second winding of the first isolated inductor connected in series with the second winding of the first non-isolated inductor and to a second lead of the first filter capacitor. The first non-isolated inductor has a respective DC saturation current and the isolated inductor has a respective DC saturation current. The DC saturation current of the first non-i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.