Apparatus and method for calibrating a receiver with a decision feedback equalizer (DFE)
US10079698B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Jul 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03617
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the disclosure are directed to determining an offset calibration step size of a sample latch. In accordance with one aspect, the disclosure relate to a Decision Feedback Equalizer (DFE) input section including a E sample latch to output a target signal sample; a E sample digital to analog converter coupled to the E sample latch to input a target voltage to the E sample latch; a sample latch to output a signal sample; and a voltage digital to analog converter coupled to the E sample latch and the sample latch to generate a bias voltage, wherein the bias voltage is inputted to the E sample latch and the sample latch. The DFE input section may further include a latch offset decoder to scale the bias voltage and a summing amplifier to receive an analog input waveform to the DFE input section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.