Multistage tuning-tolerant equalizer filter
US7564899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Sep 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/145
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multistage equalizer filter for compensating a received distorted signal having an amplitude for frequency dependent signal modifications introduced by a transmission channel includes at least one amplifying compensation stage having a gain and a saturation level, the gain being monotonically rising for at least a last decade in frequency below an upper data frequency of the received signal, and a gain control device for controlling the gain of the amplifying compensation stage such that the amplitude of the received signal amplified in the at least one amplifying compensation stage remains below the saturation level of the amplifying compensation stage. The gain may be regulated by separately regulating low frequency gain, mid-frequency gain and higher frequency gain for each of the at least one amplifying compensation stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.