Switch capacitor decision feedback equalizer with internal charge summation
US9722828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03878
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a receiver comprises a latch configured to receive a data signal and to latch symbols of the received data signal, and a decision feedback equalizer. The decision feedback equalizer comprises a first feedback capacitor having first and second terminals, the first terminal being coupled to a first internal node of the latch. The decision feedback equalizer also comprises a first plurality of switches configured to alternatively couple the second terminal of the first feedback capacitor to a first feedback signal and a ground, the first feedback signal having a first voltage that is a function of a bit decision corresponding to a first previous symbol in the data signal preceding a current symbol in the data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.