Interconnected multi-stage oscillator

Details Interconnected multi-stage oscillator Interconnected multi-stage oscillator

2005-12-06

2005-12-06

Kinkead, Arnold (Department: 2817)

Oscillators

Ring oscillators

C331S045000, C331S175000, C327S280000

Reexamination Certificate

active

06972634

ABSTRACT:
The invention provides an oscillator apparatus having a plurality of stages, with each stage of the plurality of stages having an output node, and with a plurality of input transistors within each stage. The various output nodes are coupled to the transistor inputs of the various stages, such that for the nthstage of the plurality of stages, the input to jthtransistor, of the plurality of input transistors, is coupled to the (n−j)thoutput node, and wherein (n−j) is determined modulo N, where “N” is a total number of the plurality of stages and “j” is a transistor number of the plurality of input transistors within each stage. The various embodiments of the oscillator include oscillators with 6 or more stages and with 3 or more inputs per stage, plus any load input transistor, including 8 and 16 stage oscillators to produce a multiplicity of phases for any selected use. The fundamental oscillation mode frequency may also be tuned or varied through the addition of more stages and by varying the size of the transistors.

REFERENCES:
patent: 5994939 (1999-11-01), Johnson et al.
patent: 6756853 (2004-06-01), Schmitt et al.
patent: 6801095 (2004-10-01), Renninger, II

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