Differential receiver circuit with electronic dispersion...

Details Differential receiver circuit with electronic dispersion... Differential receiver circuit with electronic dispersion...

2008-01-22

2008-01-22

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S316000

Reexamination Certificate

active

07321621

ABSTRACT:
The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), a Clock and Data Recovery, a Decision Feedback Equalizer (DFE), enhanced by additional circuits that permit control of the slicing level to compensate for pulse distortion, and control of the phase offset to set the optimal eye sampling time when a distorted signal is received. To provide the utmost speed of operation, all circuits including the phase locked loop, operate as differential circuits which include a number of improvements in the design of the charge pump, the decision feedback equalizer, the slicing level control, and others.

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Scintera's Electronic Dispersion Compensation Engine, a marketing material by Scintera Networks Inc.

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