A Time-Variant Analysis of Fundamental $1/f^{3}$ Phase Noise in CMOS Parallel $LC$ -Tank Quadrature Oscillators |
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| Authors: | Mazzanti A Andreani P |
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| Affiliation: | Dipt. di Ing. dell'Inf., Univ. degli Studi di Modena e Reggio Emilia, Modena, Italy; |
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| Abstract: | This paper presents a rigorous time-variant analysis of the 1/f MOS device noise upconversion into 1/f phase noise for two of the most popular parallel-coupled quadrature CMOS harmonic oscillators. Simple closed-form equations for the fundamental 1/f 3 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. |
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