Patent ID: 9432001
Filing Date: 2016-08-30
CPC Classification: H03K,H03L

Claim Text:
1. A signal generator, comprising: a main ring oscillator, supplied by a power voltage, and configured to generate an output oscillation signal, wherein the main ring oscillator is coupled through a power mesh to the power voltage; a first ring oscillator, supplied by the power voltage, wherein the first ring oscillator is similar or identical to the main ring oscillator, and wherein the first ring oscillator is coupled through the power mesh to the power voltage; and a second ring oscillator, supplied by the power voltage, wherein the second ring oscillator is similar or identical to the main ring oscillator, and wherein the second ring oscillator is coupled through the power mesh to the power voltage; wherein the first ring oscillator is used to calibrate a frequency of the output oscillation signal; wherein the second ring oscillator is used to calibrate the frequency of the main ring oscillator.