Phase Noise in Oscillators

Phase Noise in OscillatorsPhase Noise in Oscillators

Ali Hajimiri

Stanford University, Stanford, CA 94305

http://smirc.stanford.edu/papers/Orals98s-ali.pdf

Email: hajimiri@smirc.stanford.edu

Outline
Introduction and Definitions
Time-Variant Phase Noise Model Upconversion of 1/f Noise Cyclostationary Noise Sources Substrate and Supply Noise Measurement Results Conclusion

http://smirc.stanford.edu/papers/Orals98s-ali.pdf

Email: hajimiri@smirc.stanford.edu

Frequency Instability: Time Domain
Known As Clock Jitter.

Oscillator Oscilloscope

σ2 T

http://smirc.stanford.edu/papers/Orals98s-ali.pdf

Email: hajimiri@smirc.stanford.edu

Timing Jitter in Digital Applications
Flip-Flop D Q CLK

Oscillator tsetup thold

Clock

Data

http://smirc.stanford.edu/papers/Orals98s-ali.pdf

Email: hajimiri@smirc.stanford.ed