A Time-Variant Analysis of Fundamental 1/f3 Phase Noise in CMOS Parallel LC-Tank Quadrature Oscillators
Academic Article
Publication Date:
2009
abstract:
This paper presents a rigorous time-variant analysis of the 1/f MOS device noise upconversion into 1/f3 phase noise for two of the most popular parallel-coupled quadrature CMOS harmonic oscillators. Simple closed-form equations for the fundamental 1/f3 phase-noise spectrum are derived and validated through SpectreRF simulations, proving that the two topologies display remarkably different sensitivities to the low-frequency noise sources. Based on the developed analysis, useful general design insights are also presented.
Iris type:
1.1 Articolo in rivista
Keywords:
CMOS RFICs; flicker noise; impulse sensitivity function (ISF); phase noise; quadrature oscillator.
List of contributors:
Mazzanti, Andrea; Andreani, Pietro
Published in: