Enhanced low pass filter
US7457405B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2005 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Aug 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/1708
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An ADSL POTS splitter includes low pass filter. The low pass filter includes a first inductor portion in communication with the line interface and a second inductor portion isolated from the line interface via an isolation capacitor. In one embodiment, the first inductor portion is characterized for non-saturation in conventional operating ranges. The first non-isolated inductor portion has a respective DC saturation current and the isolated inductor portion has a respective DC saturation current. The DC saturation current of the first non-isolated inductor portion is substantially greater than the DC saturation current of the isolated inductor portion for achieving higher inductance in the isolated inductor portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.