Oscillators – Ring oscillators
Reexamination Certificate
2008-01-22
2008-01-22
Pascal, Robert (Department: 2817)
Oscillators
Ring oscillators
C331S045000, C331S183000
Reexamination Certificate
active
07321269
ABSTRACT:
An inverting circuit comprises a first inverter in a main path having a first input and a common ouput. A second inverter receives the first input and is coupled with a first voltage controlled pass gate to the common output. A third inverter couples a second input to the common output using a second voltage controlled pass gate. A fourth inverter couples the second input to the common output using the first voltage controlled pass gate. A ring oscillator is formed using a number N of the inverting circuits with each common output coupled to the first inputs forming a main ring of a ring oscillator. The second inputs are coupled to feed-forward signals from selected outputs. The resulting signals at the common outputs are an interpolation of the first and second input signals modulated by a control voltage coupled to the first and second pass gates.
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Drake Alan J.
Gebara Fadi H.
Schaub Jeremy D.
Goodley James
International Business Machines - Corporation
Pascal Robert
Winstead PC
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