Stefano Grivet Talocia

• Fast simulation of transmission lines. S. G.-T. is the main developer of the Generalized Method of Characteristics technique denoted as TOPLine for the fast transient simulation of multiconductor transmission lines with frequency-dependent parameters. The technique is based on delay extraction and rational approximations of suitable transfer functions. TOPLine was demonstrated to outperform more traditional modeling and simulation schemes with no loss of accuracy. TOPLine is now embedded in some proprietary circuit solvers such as IBM PowerSPICE.
• Macromodeling and Model Order Reduction. The term “Macromodeling” denotes methods and algorithms for the generation of black-box models or equivalent circuits starting from some “external” characterization of a given structure at few accessible “ports” or observation points. These characterizations can be in time or frequency domain, coming from either simulation (e.g., by solving first-principles models such as field equations) or direct measurements. The resulting macromodels are essential for design and verification flows via system-level simulations. Macromodeling techniques have been mainly finalized to Electromagnetic Compatibility and Signal/Power Integrity verification of complex electronic systems. Several extensions and generalizations have been developed, including distributed-parameter circuits and parameterized (multivariate) macromodeling. S. G.-T. is considered as a leading personality in this field. In particular, He has co-authored the first book entirely dedicated to Macromodeling, published in 2016.
• Methods for simulation of fields and circuits. This research activity provides a complementary approach to the mainstream macromodeling approach by the Author. The main objective is indeed the reduction of the computing time that is required by conventional simulation techniques for the numerical solution of differential problems, still preserving the possibility of accessing unknowns or variables that are inside the structure of interest. S. G.-T. is the main developer of a hybridization scheme of full-wave Finite-Difference Time-Domain solvers with behavioral models of digital drivers and receivers. Main theory includes a stability analysis for guaranteeing convergence of the simulation. This technique allows modeling and simulation of Electromagnetic Interference on interconnected structures, including the effects of nonlinear and dynamic terminations.
• Passivity of lumped macromodels. The publications by the Author on passivity enforcement are considered as a reference for the scientific community. Non-passive macromodels can be the root cause for instabilities and lack of convergence in system-level simulations. Explicit passivity enforcement is thus of paramount importance during model generation. Several particularly effective scheme for achieving this goal have been introduced by S. G.-T., in particular the class of methods based on the iterative perturbation of the eigenvalue spectrum of suitable Hamiltonian matrices associated to the macromodels. Since its introduction in 2003, the main algorithm has been introduced in some leading commercial CAD software tools. Later developments extended the applicability of this methodology to highly complex models, both in terms of dynamic order and port count. The reliability of these schemes has been successively improved by introducing advanced techniques for accuracy control based on frequency-selective weighting, and by introducing additional formulations suitable for reciprocal structures and/or based on optimal convex (non-smooth) constraints.
• Waveform Relaxation. S. G.-T. is the main developer of several numerical schemes based on distributed macromodels and Waveform Relaxation for fast transient analysis of complex high-speed channels terminated by nonlinear drivers and receivers. These algorithms outperform standard circuit solvers of the SPICE class and provide a comprehensive framework for Signal Integrity verification.
• Wavelets and applications. It is well known that wavelet transforms allow optimal characterization of data, functions and operators via adaptive representations. This fact has been exploited by S. G.-T. by contributing both to theoretical and application-oriented aspects. The former include a particularly effective construction of wavelets on bounded domains preserving regularity, approximation order, stability, and spatial localization of the border functions. The investigated applications include (space-time) adaptive solution of fields and circuits, and adaptive signal processing. In particular, the latter studies were performed during a two-year research period at NASA/Goddard Space Flight Center. The wavelet transform was been applied to the problem of non-linear adaptive filtering of signals. In particular, the intrinsic time-frequency decomposition properties in the wavelet domain led to the construction of intelligent schemes for the detection and extraction of coherent (nonlinear) wave phenomena from vector time series obtained from concurrent measurements. The main tool is a partial inversion of the wavelet transform over an integration domain in the time-frequency plane that is dynamically configured based on the features of the signals. This technique has been applied to the study of atmospheric gravity waves, leading to a systematic analysis of the occurrence of such phenomena, including relevant statistics. This methodology is currently in use at NASA and NOAA labs for the automated identification of high-energy atmospheric wave phenomena.

Settori ERC

• Intel SRS (Strategic Research Segment) Grant conferito da Intel Corporation, Stati Uniti (2024)
• Intel SRS (Strategic Research Segment) Grant conferito da Intel Corporation, Stati Uniti (2023)
• Intel SRS (Strategic Research Segment) Grant conferito da Intel Corporation, Stati Uniti (2022)
• Best Associate Editor Award - IEEE Transactions on Components, Packaging and Manufacturing Technology conferito da IEEE Electronic Packaging Society, Italia (2020)
• Best Conference Paper Award conferito da 2020 IEEE 29th Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS), San Jose (CA) USA, Stati Uniti (2020)
• IBM Shared University Research Award conferito da IBM, Stati Uniti (2009)
• IBM Shared University Research Award conferito da IBM, Stati Uniti (2008)
• Best EPEP conference paper award conferito da IEEE 17th Electrical Performance of Electronic Packaging Conference, Stati Uniti (2008)
• IBM Shared University Research Award conferito da IBM, Stati Uniti (2007)
• Best EPEP conference paper award conferito da IEEE 17th Electrical Performance of Electronic Packaging Conference, Stati Uniti (2007)
• IEEE Transactions on Advanced Packaging Best Paper Award conferito da IEEE Components, Packaging and Manufacturing Technology Society, Stati Uniti (2007)
• Best symposium paper conferito da 17th International Zurich Symposium on Electromagnetic Compatibility, Singapore (2006)
• URSI Young Scientist Award conferito da International Union of Radio Science, Belgio (1999)

• Fellow (riconoscimento scientifico) - IEEE, Institute of Electrical and Electronics Engineers, Stati Uniti (2018-)
  IEEE Fellow

• IEEE TRANSACTIONS ON COMPONENTS, PACKAGING AND MANUFACTURING TECHNOLOGY. PART C. MANUFACTURING (2018-), Associate Editor di rivista o collana editoriale
• IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY (1999-2001), Associate Editor di rivista o collana editoriale

• 28th IEEE Workshop on Signal and Power Integrity (SPI) (1/1/2024-15/5/2024), Program chair (presidente/responsabile del comitato scientifico)
• 27th IEEE Workshop on Signal and Power Integrity (SPI) (1/1/2023-10/5/2023), Program chair (presidente/responsabile del comitato scientifico)
• 21st IEEE Workshop on Signal and Power Integrity (SPI) (1/1/2017-10/5/2017), Program chair (presidente/responsabile del comitato scientifico)
• 20th IEEE Workshop on Signal and Power Integrity (SPI) (1/1/2016-11/5/2016), Program chair (presidente/responsabile del comitato scientifico)

• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2022/2023 (39. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2021/2022 (38. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2020/2021 (37. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2019/2020 (36. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2018/2019 (35. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2017/2018 (34. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2016/2017 (33. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2015/2016 (32. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2014/2015 (31. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI, 2013/2014 (30. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRONICA, 2012/2013 (29. ciclo)
  Politecnico di TORINO
• INGEGNERIA ELETTRONICA E DELLE COMUNICAZIONI, 2004/2005 (21. ciclo)
  Politecnico di TORINO

• Collegio di Ingegneria Elettronica, delle Telecomunicazioni e Fisica. Componente

Dottorato di ricerca

• Introduction to model order reduction. A.A. 2024/25, INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI. Collaboratore del corso
• Surrogate and compact modeling: theory for the user. A.A. 2018/19, INGEGNERIA ELETTRICA, ELETTRONICA E DELLE COMUNICAZIONI. Collaboratore del corso

Corso di laurea magistrale

• Advanced design for signal integrity and compliance. A.A. 2024/25, NANOTECHNOLOGIES FOR ICTs (NANOTECNOLOGIE PER LE ICT). Titolare del corso
• Advanced design for signal integrity and compliance. A.A. 2023/24, NANOTECHNOLOGIES FOR ICTs (NANOTECNOLOGIE PER LE ICT). Titolare del corso
• Advanced design for signal integrity and compliance. A.A. 2022/23, NANOTECHNOLOGIES FOR ICTs (NANOTECNOLOGIE PER LE ICT). Titolare del corso

Corso di laurea di 1° livello

• Elettrotecnica. A.A. 2024/25, INGEGNERIA ELETTRONICA. Titolare del corso
• Elettrotecnica. A.A. 2023/24, INGEGNERIA ELETTRONICA. Titolare del corso
• Elettrotecnica. A.A. 2022/23, INGEGNERIA ELETTRONICA. Titolare del corso
• Elettrotecnica. A.A. 2021/22, INGEGNERIA ELETTRONICA. Titolare del corso
• Elettrotecnica. A.A. 2020/21, INGEGNERIA ELETTRONICA. Titolare del corso
• Elettrotecnica. A.A. 2019/20, INGEGNERIA ELETTRONICA. Titolare del corso
• Workshop " Circuits and algorithms for music processing". A.A. 2019/20, ELECTRONIC AND COMMUNICATIONS ENGINEERING (INGEGNERIA ELETTRONICA E DELLE COMUNICAZIONI). Titolare del corso
• Elettrotecnica. A.A. 2018/19, INGEGNERIA ELETTRONICA. Collaboratore del corso
• Circuit theory and applications. A.A. 2018/19, ELECTRONIC AND COMMUNICATIONS ENGINEERING (INGEGNERIA ELETTRONICA E DELLE COMUNICAZIONI). Collaboratore del corso
• Elettrotecnica. A.A. 2018/19, INGEGNERIA FISICA. Titolare del corso
• Workshop " Circuits and algorithms for music processing". A.A. 2018/19, ELECTRONIC AND COMMUNICATIONS ENGINEERING (INGEGNERIA ELETTRONICA E DELLE COMUNICAZIONI). Titolare del corso

S. G.-T. is the main author, developer, and maintainer of the web service autoCircuits (www.autocircuits.org): The first web service for the automated generation of circuit problems. Simple or difficult, numeric or symbolic, the user can build fully customized circuit theory exercises, with solution.

For students: the autoCircuits enables practicing on a virtually infinite number of circuit analysis problems, always different and generated on-demand in real time.

For instructors: autoCircuits can be used to generate exam templates. Thanks to the parameterization of the back-end algorithms, all circuit problems generated with the same control options will be consistent.

The autoCircuits service is regularly used in several Circuit Theory courses at Politecnico di Torino, at national and international universities.

• Compact dynamical modeling (DET)

• EMC Group (Electromagnetic Compatibility) (DET)

• IdemWorks s.r.l. (DET)

Progetti finanziati da bandi competitivi

• SCHEMI AD ELEVATO PARALLELISMO PER LA MODELLAZIONE DI PACKAGE E INTERCONNESSIONI ELETTRONICHE CON VINCOLI DI PASSIVITA`, (2010-2012) - Responsabile Scientifico
  Ricerca Nazionale - PRIN

Progetti finanziati da contratti commerciali

• Critical assessment of state-of-the-art macromodeling algorithms, (2020-2021) - Responsabile Scientifico
  Consulenza commerciale
• Automated Frameworks for Parameterized Macromodeling of Passive Components, (2020-2021) - Responsabile Scientifico
  Ricerca Commerciale
• Methodology and Framework for Black-Box Parameterized Linear Macromodeling of Passive Components, (2019-2019) - Responsabile Scientifico
  Ricerca Commerciale
• Technical guidance on Passice Macromodeling algorithms, (2016-2017) - Responsabile Scientifico
  Consulenza commerciale
• NOISE-COMPLIANT SYNTHESIS OF REDUCED OREDER MODELS, (2014-2014) - Responsabile Scientifico
  Ricerca Commerciale
• OPTIMIZED MACROMODELING SCHEMES FOR POWER INTEGRITY, (2013-2013) - Responsabile Scientifico
  Ricerca Commerciale
• STUDIO DI FATTIBILITÀ E IMPLEMENTAZIONE ALGORITMI ..... 2A FASE RIF. 1025/12, (2012-2012) - Responsabile Scientifico
  Ricerca Commerciale
• STUDIO DI FATTIBILITÀ ED IMPLEMENTAZIONE DI ALGORITMI PER LA RIDUZIONE D''ORDINE DI CIRCUITI PASSIVI COMPLESSI, (2012-2012) - Responsabile Scientifico
  Ricerca Commerciale
• ALGORITMI PER L'ESTRAZIONE AUTOMATICA DI MODELLI A TOPOLOGIA FISSA DI PACKAGE COMPLESSI, (2010-2011) - Responsabile Scientifico
  Ricerca Commerciale
• ALGORITMI PARALLELI PER LA MACROMODELLAZIONE LINEARE DI STRUTTURE COMPLESSE , (2009-2011) - Responsabile Scientifico
  Ricerca Commerciale

• Michele Cusano. Corso in Ingegneria Elettrica, Elettronica E Delle Comunicazioni (40^o ciclo, 2024-in corso)
• Sara Paknezhad Panahi. Corso in Ingegneria Elettrica, Elettronica E Delle Comunicazioni (39^o ciclo, 2023-in corso)
  
  Big Data, Machine Learning, Neural Networks and Data Science
  Communication and Computer Networks
  Optical and Wireless Digital Transmissions Systems
  Big Data, Machine Learning, Neural Networks and Data Science
  Communication and Computer Networks
  Optical and Wireless Digital Transmissions Systems
  Big Data, Machine Learning, Neural Networks and Data Science
  Communication and Computer Networks
  Optical and Wireless Digital Transmissions Systems
• Antonio Carlucci. Corso in Ingegneria Elettrica, Elettronica E Delle Comunicazioni (37^o ciclo, 2021-in corso)
  Argomento della ricerca: Riduzione d'ordine e simulazione di circuiti elettronici per analisi di power integrity
  
  Modeling, simulation and CAD
• Kun Zhao. Corso in Ingegneria Elettrica, Elettronica E Delle Comunicazioni (37^o ciclo, 2021-in corso)

• Moglia, Alessandro; Carlucci, Antonio; Grivet-Talocia, Stefano; Kulasekaran, Siddharth; ... (2024)
  Fast Transient Simulation of System-Level Power Delivery Networks via Parallel Waveform Relaxation. In: IEEE TRANSACTIONS ON COMPONENTS, PACKAGING, AND MANUFACTURING TECHNOLOGY, pp. 1-15. ISSN 2156-3950
  Contributo su Rivista
• Carlucci, Antonio; Bradde, Tommaso; Grivet-Talocia, Stefano (2024)
  Improving robustness to termination conditions in passivity enforcement of rational macromodels. In: IEEE TRANSACTIONS ON COMPONENTS, PACKAGING, AND MANUFACTURING TECHNOLOGY, pp. 1-11. ISSN 2156-3950
  Contributo su Rivista
• Carlucci, Antonio; Bradde, Tommaso; Grivet-Talocia, Stefano (2024)
  Fast Prediction of Worst-Case Voltage Droops in Power Distribution Networks. In: 2024 IEEE 28th Workshop on Signal and Power Integrity (SPI), Lisbon (Portugal), 12-15 May 2024, pp. 1-4. ISBN: 979-8-3503-8293-8
  Contributo in Atti di Convegno (Proceeding)
• Bradde, Tommaso; Zanco, Alessandro; Grivet-Talocia, Stefano (2024)
  Data-Driven Model Order Reduction of Parameterized Dissipative Linear Time-Invariant Systems. In: Scientific Computing in Electrical Engineering, Amsterdam, The Netherlands, 11–14 July 2022, pp. 152-158. ISSN 1612-3956. ISBN: 9783031545160
  Contributo in Atti di Convegno (Proceeding)
• Moglia, Alessandro; Carlucci, Antonio; Grivet-Talocia, Stefano; Mongrain, Scott; ... (2023)
  A Two-Level Waveform Relaxation Approach for System-Level Power Delivery Verification. In: 2023 IEEE Electrical Design of Advanced Packaging and Systems (EDAPS), Rose Hill (Mauritius), 12-14 December 2023, pp. 1-3. ISBN: 979-8-3503-8376-8
  Contributo in Atti di Convegno (Proceeding)

• software IDEMWORKS. Diritto d'autore nazionale
  Inventori: Stefano Grivet Talocia