Cmos laddered inverter ring oscillator

A method of constructing a ring oscillator, comprising:

• connecting a first set of at least three laddered inverter quantizer (LIQAF) circuits in stages that are in series, including a first LIQAF circuit and a last LIQAF circuit;
• and
• providing a feedback circuit from the last LIQAF circuit to the first LIQAF circuit having a logical NOT output compared to the first LIQAF circuit;
• wherein a voltage input creates a pair of phase shifted waveforms in the first of the at least three LIQAF circuits that propagate sequentially through the stages of the at least three LIQAF circuits;
• and
• wherein each stage has a pair of outputs to the next stage that are then phase shifted from the previous stage in the next stage.

A ring oscillator, comprising:

• a structure having a two level CMOS laddered inverter quantizer (LIQAF) and three horizontal LIQAF blocks;
• the three horizontal LIQAF blocks in each of the two levels connected in stages that are in series, including a first LIQAF circuit and a last LIQAF circuit, and a feedback circuit from the last LIQAF circuit to the first LIQAF circuit having a logical NOT output compared to the first LIQAF circuit;
• wherein the voltage input in the three horizontal LIQAF blocks in each of the two levels creates a pair of phase shifted waveforms in the first of the three horizontal LIQAF blocks that propagate sequentially through the stages of the three LIQAF blocks;
• and
• wherein each stage of the three horizontal LIQAF blocks in each of the two levels has a pair of outputs to the next stage that are then phase shifted from the previous stage in the next stage.