Very High Speed Low Power Receiver Equalization System For Non-Return-To-Zero Transmission
OwnerPhilippe Hauviller, Alexandre Maltereinventors
Life of this patent
Estimating the term…
Abstract
A very high speed low power receiver equalization system for non-return-to-zero transmission is disclosed. The equalizer comprises a three stage architecture, preferably controlled by three main parameters, the low frequency gain controlled through Rfb, the peaking frequency settled by the capacitor Cfpk, and the variable peak boosting Gpk which provides the equalizer transfer function and the optimum controls of the signal gain characteristic in order to compensate the ISI at the receiver input and consequently allow High speed, reliable links.
Claims18
A low power equalizer for high speed signals having three amplifying stages serially connected, comprising a negative feedback loop from the third stage output to the second stage input for controlling the ISI, wherein,
- the first stage is adapted to isolate the upstream circuit from said feedback;
- the second stage comprises means for adjusting its variable gain with inherent common mode stabilization, for controlling signal peak boosting;
- and,
- the third stage comprises means for applying the feedback to control the ISI by offering a gain peaking capability.
A Low power receiver comprising a low power equalizer having three amplifying stages serially connected, and further comprising a negative feedback loop from a third stage output to a second stage input for controlling the ISI, wherein,
- the first stage is adapted to isolate the upstream circuit from said feedback;
- the second stage comprises means for adjusting its variable gain with inherent common mode stabilization, for controlling signal peak boosting;
- and
- the third stage comprises means for applying the feedback to control the ISI by offering a gain peaking capability.
Dependencies are inferred from the claim text.