This brief aims at finding the most appropriate frequency of operation of an integrated harmonic oscillator in order to maximize its spectral purity. To achieve this, a simple, yet accurate, scalable model is developed for the LC tank, that tracks the dependence of the parasitics on the inductance value. Using an ultra-scaled CMOS digital technology as a case study, the frequencies around 5 GHz are singled out as the sweet spot to minimize the phase noise.
On the Optimal Operation Frequency to Minimize Phase Noise in Integrated Harmonic Oscillators
FRANCESCHIN, ALESSANDRO;Bevilacqua, Andrea
2018
Abstract
This brief aims at finding the most appropriate frequency of operation of an integrated harmonic oscillator in order to maximize its spectral purity. To achieve this, a simple, yet accurate, scalable model is developed for the LC tank, that tracks the dependence of the parasitics on the inductance value. Using an ultra-scaled CMOS digital technology as a case study, the frequencies around 5 GHz are singled out as the sweet spot to minimize the phase noise.
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