High speed linear half-rate phase detector

Details High speed linear half-rate phase detector High speed linear half-rate phase detector

2006-06-06

2006-06-06

Nguyen, Minh (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By phase

C331S025000

Reexamination Certificate

active

07057418

ABSTRACT:
A high-speed, half rate phase detector provides an effective solution to the problem of XOR gate response to the minimum width signal precursors (Q1and Q2) of a phase signal that indicates a phase difference between a data signal and a clock signal by combining the precursor signals in a multiplexer and combining the multiplexed signal with the data signal in an XOR gate. This affords the transition information in the transitions of the precursor signals, which is significant of phase difference, without requiring the XOR gate to respond to the minimum widths of those pulses.

REFERENCES:
patent: 5799048 (1998-08-01), Farjad-Rad et al.
patent: 6055286 (2000-04-01), Wu et al.
patent: 6081572 (2000-06-01), Filip
patent: 6240523 (2001-05-01), Rogers
patent: 6614314 (2003-09-01), d'Haene et al.
patent: 2004/0114702 (2004-06-01), Friedman et al.

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