Adaptive equalizer circuit
US5828700A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1993 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Aug 5, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/141
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adaptive equalizer is configured to reconstruct electronic signals which are transmitted over signal cables, such as twisted pair cables. The equalizer satisfactorily reconstructs the signals over a broad range of cable lengths. The degradation characteristics of a signal cable varies with cable length. Using the degradation characteristics for a cable over a desired range of lengths, the adaptive equalizer includes multiple parallel paths each of which are configured to reconstruct the input voltage signal optimized for a particular cable length. The degraded input signal is split according to a predetermined relationship into multiple partial signals, each signal for transmission through one each of the paths. Though each path is optimized to reconstruct the signal for a particular length of cable, the adaptive control adds a function of the actual cable length for more accurately reconstructing the signal. Each path forms a partial reconstructed signal. In the preferred embodiment, there are two paths, one of which does not modify its partial signal. The partial signals from each path are summed to form a composite reconstructed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.