Clock generators for generation of in-phase and quadrature...

Details Clock generators for generation of in-phase and quadrature... Clock generators for generation of in-phase and quadrature...

2007-12-14

2009-08-18

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Phase shift by less than period of input

C327S254000

Reexamination Certificate

active

07576584

ABSTRACT:
Clock generator embodiments are provided to generate half-rate I and Q clock signals. The generators are configured to insure fan-out limitations, to insure correct phasing at startup, to reduce the number of signal inverters in a critical path, and to reduce the total number of inverter structures to thereby substantially extend generator operational frequency. An exemplary generator embodiment requires only two tri-state inverters and four inverters. These clock generators are particularly suited for variety of electronic systems such as high speed data serializers.

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