Research Topics

  My research interests include the development of advanced computational methods for the modeling, simulation, and design of nonlinear dynamical circuits and systems.   Currently, my research activity focuses on:
  - Self-sustaining oscillatory devices for engineering applications. Synchronization phenomena in oscillator arrays. Unconventional Signal Processing. Noise analysis. Stochastic simulation.
  - Systems for Energy production and distribution. Probabilistic analysis. Photovoltaics. Multiphysics modeling and simulation.
  - Design and verification of Analog-Mixed-Signal (AMS) electronics. RF oscillators, Phase-Locked-Loops, Frequency synthesizers, Data Converters. Parasitic extraction, parasitic-aware and noise-aware design.
  - Analysis & design of complex nonlinear circuits/systems, compact-modeling, behavioral/hierarchical simulation, sensitivity to parameters, uncertainty quantification.
  On these issues, I published 70 papers in ISI journals (64 of which in highly selective IEEE journals) and 65 papers in conference proceedings with peer review.


  Recent publications:

  -   G. Gruosso, G. Storti Gajani, Z. Zhang, L. Daniel, P. Maffezzoni,
      "Uncertainty-Aware Computational Tools for Power Distribution Networks Including Electrical Vehicle Charging and Load Profiles",
      IEEE Access, vol. 7, pp. 9357-9367, 2019.

  -   G. Gruosso, P. Maffezzoni, Z. Zhang, L. Daniel,
      "Probabilistic load flow methodology for distribution networks including loads uncertainty",
      International Journal of Electrical Power & Energy Systems, vol. 106, pp. 392-400, Mar. 2019

  -   P. Maffezzoni and L. Daniel,
      "Exploiting Oscillator Arrays as Randomness Sources for Cryptographic Applications",
      IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 37, no. 12, pp. 2999-3007, Dec. 2018

  -   P. Maffezzoni, Z. Zhang, S. Levantino and L. Daniel,
      "Variation-aware Modeling of Integrated Capacitors based on Floating Random Walk Extraction,",
      IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 37, no. 10, pp. 2180-2184, Oct. 2018.

  -   A. Bernardini, P. Maffezzoni, L. Daniel and A. Sarti,
      "Wave-Based Analysis of Large Nonlinear Photovoltaic Arrays",
      IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 65, no. 4, pp. 1363-1376, Apr. 2018.



  Selected publications:

  - Analog-Mixed-Signal (AMS) Simulation/Design :

  -   P. Maffezzoni, B. Bahr, Z. Zhang, and L. Daniel
      ``Reducing Phase Noise in Multi-Phase Oscillators'',
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 63, no. 3, pp. 379-388, Mar. 2016.   TCAS1 Popular Paper

  -   P. Maffezzoni, S. Levantino,
    `` Phase Noise of Pulse Injection-Locked Oscillators,''
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 61, no. 10, pp. 2912-2919 , Oct. 2014. TCAS1 Popular Paper

  -   P. Maffezzoni, Z. Zhang, L. Daniel,
    `` A Study of Deterministic Jitter in Crystal Oscillators,''
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 61, no. 4, pp. 1044-1054, April 2014. TCAS1 Popular Paper

  -   G. Marucci, S. Levantino, P. Maffezzoni and C. Samori,
    `` Analysis and Design of Low-Jitter Digital Bang-Bang Phase-Locked Loops,''
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 61, no. 1, pp. 26-36, Jan. 2014. TCAS1 Popular Paper

  -   G. Marucci, S. Levantino, P. Maffezzoni and C. Samori,
    `` Exploiting Stochastic Resonance to Enhance the Performance of Digital Bang-Bang PLLs,''
      IEEE Trans. Circuits and Systems II: Express Briefs , vol. 60, no. 10, pp. 632-636, Oct. 2013. TCAS2 Popular Paper

  -   P. Maffezzoni, F. Pepe, A. Bonfanti,
    ``A Unified Method for the Analysis of Phase and Amplitude Noise in Electrical Oscillators,''
      IEEE Trans. Microwave Theory and Techniques, vol. 61, no. 9, pp. 3277-3284, Sep. 2013. TMTT Popular Paper

  -   P. Maffezzoni, S. Levantino,
    ``Analysis of VCO Phase Noise in Charge-Pump Phase-Locked Loops,''
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 59, no. 10, pp. 2165-2175, Oct. 2012. TCAS1 Popular Paper


  - Capacitance Extraction/Interconnect Modeling :

  -   A. Brambilla, P. Maffezzoni,
    ``Statistical Method for the Analysis of Interconnects Delay in Sub-micron Layouts,''
      IEEE Trans. on Computer-Aided-Design of Integrated Circuits and Systems , vol. 20, no. 8, Aug. 2001, pp.957-966. 54 Citations in Patents

  -   A. Brambilla, P. Maffezzoni, L. Bortesi, L. Vendrame,
    ``Measurements and Extractions of Parasitic Capacitances in ULSI Layouts,,''
      IEEE Trans. on Electron Devices, vol. 50, no. 11, Nov. 2003, pp. 2236-2247. 13 Citations in Patents


  - Oscillators/Oscillator Arrays :

  -   P. Maffezzoni, B. Bahr, Z. Zhang, and L. Daniel,
      ``Analysis and Design of Boolean Associative Memories Made of Resonant Oscillator Arrays'',
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 63, no. 11, pp. 1964-1973, Nov. 2016.

  -   P. Maffezzoni, L. Daniel, N. Shukla, S. Datta, and A. Raychowdhury,
      ``Modeling and Simulation of Vanadium dioxide Relaxation Oscillators'',
      IEEE Trans. Circuits and Systems I: Regular Papers , vol. 62, no. 9, pp. 2207-2215, Sep. 2015. TCAS1 Popular Paper

  -   P. Maffezzoni, B. Bahr, Z. Zhang, and L. Daniel,
      ``Oscillator Array Models for Associative Memory and Pattern Recognition'',
      IEEE Trans. Circuits and Systems I: Regular Papers , vol 62, no. 6, pp. 1591-1598, June 2015.

  -   P. Maffezzoni, B. Bahr, Z. Zhang, and L. Daniel,
      ``Analysis and Design of Weakly Coupled Oscillator Arrays Based on Phase-Domain Macromodels'',
      IEEE Trans. Computer-Aided-Design of Integrated Circuits and Systems , vol. 34, no. 1, pp. 77-85, Jan. 2015. TCAD Popular Paper

  -   S. Levantino, P. Maffezzoni
    `` Computing the Perturbation Projection Vector of Oscillators via Frequency Domain Analysis ,''
      IEEE Trans. Computer-Aided-Design of Integrated Circuits and Systems , vol. 31, no. 10, pp. 1499-1507, Oct. 2012. TCAD Popular Paper

  -   P. Maffezzoni,
   `` Synchronization Analysis of Two Weakly Coupled Oscillators Through a PPV Macromodel,''
      IEEE Trans. on Circuits and Systems I: Regular Papers., vol. 57, n. 3, pp. 654-663, Mar. 2010.

  -   P. Maffezzoni,
    `` Analysis of Oscillator Injection Locking Through Phase-Domain Impulse-Response,''
      IEEE Trans. on Circuits and Systems I: Regular Papers, vol. 55, N. 5, Jun. 2008, pp. 1297-1305. 14 Citations in Patents


  - Variability/Sensitivity Analysis :

  -   Z. Zhang, X. Yang, G. Marucci, P. Maffezzoni, I. M. Elfadel, G. Karniadakis and L. Daniel,
    ``Stochastic testing simulator for integrated circuits and MEMS: Hierarchical and sparse techniques,''
      IEEE Custom Integrated Circuits Conf. (CICC), 8 pages, San Jose, CA., Sept. 2014. Invited Paper, Best Paper Nomination

  -   Z. Zhang, Z. ; T.A. El-Moselhy, P. Maffezzoni, I.M. Elfadel, L. Daniel,
    `` Efficient Uncertainty Quantification for the Periodic Steady State of Forced and Autonomous Circuits,''
      IEEE Trans. Circuits and Systems II: Express Briefs , vol. 60, no. 10, pp. 687-691, Oct. 2013.

  -   P. Maffezzoni,
   `` Unified Computation of Parameter-Sensitivity and Signal-Injection Sensitivity in Nonlinear Oscillators,''
      IEEE Trans. on Computer-Aided Design of Integrated Circuits and Systems, vol. 27, N. 5, pp. 781-790, May 2008.


  - Adavanced Simulation Techniques :

  -   P. Maffezzoni,
    `` A Versatile Time-Domain Approach to Simulate Oscillators in RF Circuits ,''
      IEEE Trans. on Circuits and Systems I: Regular Papers., vol. 56, N. 3, pp. 594-603, Mar. 2009.

  -   P. Maffezzoni, L. Codecasa, D. D'Amore,
    `` Time-Domain Simulation of Nonlinear Circuits through Implicit Runge-Kutta Methods,''
      IEEE Trans. Circuits and Systems I: Regular Papers, vol. 54, N. 2, Feb. 2007 pp. 391-400.


  - Photovoltaics :

  -   P. Maffezzoni, L. Codecasa, D. D'Amore,
    `` Modeling and Simulation of a Hybrid Photovoltaic Module Equipped with a Heat Recovery System,''
      IEEE Trans. on Industrial Electronics, vol. 56, n. 11, pp. 4311-4319, Nov. 2009.

  -   P. Maffezzoni, D. D'Amore,
    `` Compact Electrothermal Macromodeling of Photovoltaic Modules,''
      IEEE Trans. on Circuits and Systems II: Express Briefs, vol. 56, n. 2, pp. 162-166, Feb. 2009.



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