Technical Program

Paper Detail

Paper:ASP-L9.1
Session:Oscillators
Time:Monday, May 24, 14:15 - 14:33
Presentation: Lecture
Topic: Analog Signal Processing: RF Circuits
Title: PHASE NOISE AND ACCURACY IN QUADRATURE OSCILLATORS
Authors: Luca RomanĂ²; Politecnico di Milano 
 Salvatore Levantino; Politecnico di Milano 
 Andrea Bonfanti; Politecnico di Milano 
 Carlo Samori; Politecnico di Milano 
 Andrea Lacaita; Politecnico di Milano / IFN-CNR Sez. Milano 
Abstract: This paper proposes a complete analysis of quadrature-coupled LC oscillators. These oscillators operate off-resonance and for this reason, their phase noise worsens at increasing coupling strength. Since the coupling transistors raise the total power consumption, the noise-power product degrades further with respect to a stand-alone oscillator. On the other hand, at high coupling factors component mismatches affect less the phase accuracy of the quadrature outputs. Closed-form expressions for phase noise and phase accuracy are derived which are verified against circuit simulations.
 
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