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What is Delay Line vs. Ring Oscillator Phase Noise about?

This paper establishes a relationship between the phase noise of delay lines and ring oscillators, showing that the phase noise in ring oscillators can be derived from their open-loop phase noise multiplied by a shaping function. The analysis indicates that flicker noise upconversion in ring oscillators is primarily dependent on total gate capacitance and is independent of rise and fall time symmetry. Experimental validation is provided through prototypes fabricated in 65-nm CMOS technology.

Author

zhenghanchenic

Language

EN