Phase-Noise Reduction in a CMOS-MEMS Oscillator under Nonlinear MEMS Operation

Arantxa Uranga, Guillermo Sobreviela, Martin Riverola, Francesc Torres, Nuria Barniol

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

© 2004-2012 IEEE. In this paper, we will present an all-CMOS oscillator based on monolithically integrated MEMS resonators fabricated from the VIA layer (tungsten) of a 0.35 μm CMOS technology process. With this CMOS MEMS closed-loop system, the nonlinear MEMS frequency response due to the electrostatic actuation has been reconstructed. Using a phase-controlled closed-loop the frequency stability of the self-sustained oscillator at different nonlinear operation points has been analyzed, showing an optimal point belonging to the unstable region of the MEMS resonator.
Original languageEnglish
Article number8077754
Pages (from-to)3047-3055
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume64
Issue number12
DOIs
Publication statusPublished - 1 Dec 2017

Keywords

  • CMOS-MEMS
  • MEMS-based oscillators
  • Noise

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