Decision feedback equalizer and transceiver
US8879618B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2011 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jun 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03624
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A decision feedback equalizer, transceiver, and method are provided, the equalizer having at least one comparator, the at least one comparator comprising a first stage, comprising a main branch having two track switches with a resistive load, an offset cancellation branch, a plurality of tap branches with transistor sizes smaller than the main branch, in which previous decisions of the equalizer are mixed with the tap weights using current-mode switching, and a cross coupled latch branch; and a second stage, comprising a comparator module for making decisions based on the outputs of the first stage and a clock input, and a plurality of flip-flops for storing the output of the comparator module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.