Lecture

Distinguished Lecture: "Physics of quantum-to-classical crossover and coherent Ising machines" by Dr. Yoshihisa Yamamoto

Andrea Pinos — Fri, 08 Jun 2018 19:55:20 +0000

Distinguished Lecture: "Physics of quantum-to-classical crossover and coherent Ising machines" by Dr. Yoshihisa Yamamoto Andrea Pinos Fri, 06/08/2018 - 15:55

"Physics of quantum-to-classical crossover and coherent Ising machines"

Speaker: Dr. Yoshihisa Yamamoto

Biography:

Yoshihisa Yamamoto received his B.S. degree from Tokyo Institute of Technology and his M.S. and Ph. D. degrees from the University of Tokyo in 1973, 1975 and 1978, respectively. He joined NTT Basic Research Laboratories in 1978. He became a Professor of Applied Physics and Electrical Engineering at Stanford University in 1992. From 2003, he concurrently served as a Professor at National Institute of Informatics. Since 2014, he has been a Program Manager for Impulsive Paradigm Change through Disruptive Technologies Program (ImPACT) of Council for Science, Technology and Innovation, Cabinet Office, Government of Japan. He is currently a Professor (emeritus) at Stanford University and National Institute of Informatics, and NTT R&D Fellow. His research interest has been in coherent communication, quantum optics and quantum information processing.

Abstract:

In this talk, we will discuss the three quantum computation models, unitary quantum computation (UQC) [1,2], adiabatic quantum computation (AQC) [3,4] and dissipative quantum computation (DQC) [5,6]. The UQC is expected to solve efficiently problems with hidden periodicity such as factoring and discrete logarithm, while the AQC and DQC are expected to solve efficiently problems without any hidden period nor specific structure, such as combinatorial optimization problems. A coherent Ising machine (CIM) is a novel computing architecture based on the network of degenerate optical parametric oscillators and implements the DQC model [7,8]. The developed CIM has 2048 spins with all-to-all connections and is now available as a cloud system via internt [9]. We will present the basic concept [10], operational principle [11] and benchmark study against modern algorithms [12] of the CIM.

References:

[1] D. Deutsch, Proc. of the Royal Society of London. Series A, Mathematical and Physical Sciences, 400, 97–117 (1985); D. Deutsch and R. Jozsa, Proc. Roy. Soc. (London) A 439, 553 (1992).

[2] P. W. Shor, Proc. of the 35th Annual Symposium on Foundations of Computer Science, IEEE Computer Society Press,124 (1994).

[3] E. Farhi, J. Goldstone, S. Gutmann, J. Lapan, A. Lundgren, and D. Preda, Science 292, 472 (2001).

[4] T. Kadowaki and H. Nishimori, Phys. Rev. E 58, 5355 (1998).

[5] W. H. Zurek, Rev. Mod. Phys. 75, 715 (2003).

[6] F. Verstraete, M. M. Wolf, and J. I. Cirac, Nature Phys. 5, 633 (2009).

[7] A. Marandi Z. Wang, K. Takata, R. L. Byer, and Y. Yamamoto, Nature Photonics 8, 937 (2014); T. Inagaki, K. Inaba, R. Hamerly, K. Inoue, Y. Yamamoto, and H. Takesue, Nature Photonics 10, 415 (2016).

[8] T. Inagaki, Y. Haribara, K. Igarashi, T. Sonobe, S. Tamate, T. Honjo, A. Marandi, P. L. McMahon, T. Umeki, K. Enbutsu, O. Tadanaga, H. Takenouchi, K. Aihara, K. Kawarabayashi, K. Inoue, S. Utsunomiya, and H. Takesue, Science 354, 603 (2016); P. L. McMahon, A. Marandi, Y. Haribara, R. Hamerly, C. Langrock, S. Tamate, T. Inagaki, H. Takesue, S. Utsunomiya, K. Aihara, R. L. Byer, M. M. Fejer, H. Mabuchi, and Y. Yamamoto, Science 354, 614 (2016).

[9] https://qnncloud.com/

[10] S. Utsunomiya, K. Takata, and Y. Yamamoto, Opt. Express 19, 18091 (2011).

[11] Z. Wang, A. Marandi, K. Wen, R. L. Byer, and Y. Yamamoto, Phys. Rev. A 88, 063853 (2013); T. Leleu, Y. Yamamoto, S. Utsunomiya, and K. Aihara, Phys. Rev. E 95, 022118 (2017).

[12] Y. Haribara, H. Ishikawa, S. Utsunomiya, K. Aihara, and Y. Yamamoto, Quantum Sci. Tech. 2, 044002 (2017).

Distinguished Lecture: "Societal Scale Cyber Physical Systems"

Andrea Pinos — Wed, 01 Jun 2016 20:30:55 +0000

Distinguished Lecture: "Societal Scale Cyber Physical Systems" Andrea Pinos Wed, 06/01/2016 - 16:30

Speaker:

Dr. Shankar Sastry is the Dean of the College of Engineering and Roy W. Carlson Professor of Engineering at the University of California, Berkeley.

Abstract:

The scope of the research agenda of Cyber Physical Systems (CPS) has expanded to include the Internet of Things (IoT), Mechanism and Incentive Design, Resilience and Cyber Security, and data analytics for Big Data arising from CPS Systems. Much work has been done in recent years on the evolution of ‘Action Webs’; moreover, closing the loop around IoT networked sensors. These networked control systems are fast-becoming the next generation societal-scale. Societal Scale CPS systems need to offer new data oriented service models, be robust, fault tolerant, and able to operate through cyber-attacks. Thus, the agenda of Societal Scale CPS Systems very much expands on IoT. Additionally, the advent of Societal Scale CPS Systems is causing the emergence of new models for monetization for the offering of new data oriented services. In this lecture, the rudiments of a theory of resilient societal CPS systems will be discussed, including the modeling of utility based privacy and security. Further, the discussion will also focus on the provision of economic incentives to private entities which own individual action webs to address issues of “under investment in the common good”. More technically, this is a mechanism design procedure for helping bridge the gap between the non-cooperative Nash equilibrium of multiple players and the societal optimum strategy.

The lecture is based on Dr. Sastry’s joint work with several researchers and past and ongoing students.

See poster.pdf for more details.

Distinguished Lecture Series - Professor R. Srikant

Phil Regier — Thu, 10 Apr 2014 14:54:28 +0000

Distinguished Lecture Series - Professor R. Srikant Phil Regier Thu, 04/10/2014 - 10:54

Speaker

Professor R. Srikant, University of Illinois at Urbana-Champaign (UIUC)

Title

Resource Allocation and Networking in Clouds and Data Centers

Abstract

We will present a survey of resource allocation and networking problems that arise in cloud computing clusters and data centers. Examples of problems that will be presented include cloud infrastructure provisioning, stream processing, green computing, data center networking, and data locality-based load balancing. An optimal resource allocation scheme will be presented for one of the problems, the so-called Infrastructure-as-a-Service or IaaS problem, by exploiting a relationship between convex optimization and stochastic networks, which was first noticed in the context of resource allocation problems in the Internet and wireless networks. While we will primarily focus on addressing the issues that arise from the dynamics of job arrivals and departures, we will also point out interesting combinatorial problems that arise in cloud computing, such as vector packing and graph partitioning.

Speaker's biography

R. Srikant is the Fredric G. and Elizabeth H. Nearing Endowed Professor of Electrical and Computer Engineering and a Professor in the Coordinated Science Lab, both at the University of Illinois at Urbana-Champaign. He is the author or coauthor of two monographs, The Mathematics of Internet Congestion Control and Network Optimization and Control, and a coauthor of the book Communication Networks: An Optimization, Control and Stochastic Networks Perspective. His research interests include communication networks, queueing theory, machine learning, and optimization. He is currently the Editor-in-Chief of the IEEE/ACM Transactions on Networking and is a Fellow of the IEEE.

A reception will follow in the EIT building atrium at 4:00 PM.

Guest Lecture: D2M (Direct-2-Mobile)

Andrea Pinos — Fri, 13 Jun 2025 13:15:36 +0000

Guest Lecture: D2M (Direct-2-Mobile) Andrea Pinos Fri, 06/13/2025 - 09:15

Speaker: Adrish Banerjee, Next Generation Broadcasting Chair and Professor, Department of Electrical Engineering, Indian Institute of Technology, Kanpur, India
Date: June 20, 2025
Time: 11:00 AM
Location: EIT 3142
Hosted by Dr. Patrick Mitran

Abstract:

A Superior Solution for 5G Broadcast Abstract: The proliferation of mobile broadband networks is increasingly making personal devices like smartphones the preferred choice for content consumption. As the content quantity and quality increase, the load on available cellular spectrum resources also grows, causing congestion and user experience degradation. This creates an opportunity to offload live and popular content from many unicast streams to only a few broadcast/multicast streams using "Direct-to-Mobile" (D2M) broadcast delivery as part of the 5G fabric. In a country with a large population and spectrum scarcity, offloading to D2M broadcast distribution dense urban and rural areas is a good option. Current 3GPP broadcast standards, however, are derived from short-frame low-latency unicast standards and perform poorly for long-frame broadcasts. ATSC 3.0 is a purpose-built broadcast standard with excellent performance for pedestrian and mobile use cases. This talk will present the ATSC 3.0-based D2M solution and discuss results from our proof-of-concept trial in Bangalore, India. This is a joint work with Tejas Networks.

Biography:

Adrish Banerjee received the B.Tech. (Hons.) degree from the Indian Institute of Technology, Kharagpur, India, and the M.S. and Ph.D. degrees from the University of Notre Dame, Notre Dame, IN, USA. He is currently the Next Generation Broadcasting Chair Professor with the Department of Electrical Engineering, Indian Institute of Technology, Kanpur, India. His research interests include physical-layer aspects of communications, particularly error control coding, molecular communications, broadcasting, and machine learning applications in communications.

IEEE Guest Lecture: Overcoming Efficiency and Linearity Challenges in 6G RF Power Amplifiers

Andrea Pinos — Fri, 23 May 2025 15:05:43 +0000

IEEE Guest Lecture: Overcoming Efficiency and Linearity Challenges in 6G RF Power Amplifiers Andrea Pinos Fri, 05/23/2025 - 11:05

Speaker: Dr. Anding Zhu, School of Electrical and Electronic Engineering, University College Dublin, Ireland

Date: June 23, 2025

Time: 11:00 AM – 12:00 PM

Location: Room EIT 3142

All are welcome!

Abstract:

Radio frequency (RF) power amplifiers (PAs) are fundamental components in nearly all wireless transmitters, from tiny sensors and mobile phones to high-power base stations. Their primary function is to boost RF signals by converting DC power into amplified radio waves, ensuring reliable transmission over distances. As 6G aims to enable transformative applications such as ultra-high-speed communication, massive IoT, and immersive experiences, PAs must address challenges in energy efficiency, broadband operation, and linearity under high peak-to-average power ratios and dynamic traffic.

This talk explores the critical obstacles and emerging solutions in 6G PA development, including advanced architectures, novel materials like Gallium Nitride (GaN) MMICs, new frequency bands (e.g., FR3), and AI-driven optimization techniques. It also highlights innovations in linearity enhancement, system integration, and system-level co-design. By bridging theoretical insights and practical applications, this talk provides guidance for researchers and engineers working to meet the stringent requirements of 6G, paving the way for a more connected and efficient wireless future.

Biography

Professor Anding Zhu received his Ph.D. in Electronic Engineering from University College Dublin (UCD), Ireland, in 2004. He is currently a Full Professor with the School of Electrical and Electronic Engineering at UCD. His research focuses on high-frequency nonlinear system modelling, device characterization, and high-efficiency power amplifier design. He has authored over 200 peer-reviewed publications.

Prof. Zhu is an IEEE Fellow and has held several leadership roles in the IEEE Microwave Theory and Technology Society (MTT-S), including Secretary of the Administrative Committee (AdCom) in 2018, Chair of the Budget Committee, and Track Editor for IEEE Transactions on Microwave Theory and Techniques (2020–2022). He received the 2021 IEEE MTT-S Microwave Prize and is currently the IEEE MTT-S President-Elect, slated to serve as President in 2026.

IEEE EMC Society Distinguished Lecture: Reconciling EMC and OTA: Technical Trade-offs and Innovations in Far-Field Measurement for Electrically Large Devices

Andrea Pinos — Fri, 23 May 2025 14:34:35 +0000

IEEE EMC Society Distinguished Lecture: Reconciling EMC and OTA: Technical Trade-offs and Innovations in Far-Field Measurement for Electrically Large Devices Andrea Pinos Fri, 05/23/2025 - 10:34

Speaker: Dr. Benoit Derat

Date: June 6, 2025

Time: 11:00 AM - 12:30 PM

Location: Room EIT 3142

All are welcome!

Biography:

Benoit Derat received the Engineering degree from SUPELEC, in 2002, and the Ph.D. degree (Hons.) in physics from the University of Paris XI, in 2006. From 2002 to 2008, he worked at SAGEM Mobiles, as an Antenna Design and Electromagnetics Research Engineer. In 2009, he founded ART-Fi, which created the first vector-array specific absorption rate measurement system. He operated as the CEO and the President of ART-Fi, before joining Rohde & Schwarz, Munich, in 2017. He is currently the Senior Director of Engineering for Vector Network Analyzers, Electromagnetic Compatibility, Over-The-Air and Antenna Test applications. Dr. Derat is a Senior Member of the Antenna Measurement Techniques Association (AMTA) and a Distinguished Lecturer of the IEEE EMC Society (2024 – 2025). He is the author of more than 80 scientific journals and conference papers, and an inventor on more than 40 patents, with main focus in antenna systems near and far-field characterization techniques.

Abstract:

The proliferation of millimeter-wave technologies, massive MIMO systems, and antenna integration into electrically large platforms such as vehicles has introduced significant challenges in the characterization and validation of radiated performance. As regulatory, performance, and reliability testing converge, the demand for precise Over-the-Air (OTA) measurements at far-field distances is growing—often within existing Electromagnetic Compatibility (EMC) test environments. This lecture unifies two critical and timely questions:

1. What is the shortest achievable far-field distance that preserves OTA measurement accuracy for a given antenna size, frequency, and metric?

2. Can a large EMC chamber be reconfigured to serve as a dual-purpose OTA testing facility without compromising compliance or performance evaluation?

Drawing from recent theoretical developments and empirical investigations, the lecture presents analytical and simulation-based approaches to define the minimum far-field distance that meets specified error tolerances. It introduces practical formulas and charts that relate chamber dimensions, aperture size, and operating frequency to measurement accuracy, enabling engineers to optimize existing infrastructure. In parallel, the talk addresses the technical feasibility of performing OTA measurements in EMC chambers—highlighting architectural differences, absorber requirements, dynamic range considerations, and field uniformity constraints. Design trade-offs and calibration strategies are discussed for repurposing EMC chambers to support dual-use applications, especially in the context of full-vehicle wireless testing. Through real-world examples and validated case studies, the lecture offers guidance to RF test engineers, antenna designers, and facility managers on how to maximize test coverage, reduce cost, and maintain accuracy—all while navigating the complex interplay between intended and unintended radiation measurements.

IEEE-EDS Distinguished Lecture: Multifunctional Materials for Emerging Solar Technologies

Rozhannaa Sothilingam — Thu, 09 Nov 2023 15:50:38 +0000

IEEE-EDS Distinguished Lecture: Multifunctional Materials for Emerging Solar Technologies Rozhannaa Soth… Thu, 11/09/2023 - 10:50

Speaker: Professor Federico Rosei

Date: November 16, 2023

Time: 2:00 PM - 3:00 PM

Location: EIT 3142

Abstract:

This presentation focuses on structure property/relationships in advanced materials, emphasizing multifunctional systems that exhibit multiple functionalities. Such systems are then used as building blocks for the fabrication of various emerging technologies. In particular, nanostructured materials synthesized via the bottom–up approach present an opportunity for future generation low-cost manufacturing of devices [1]. We focus in particular on recent developments in solar technologies that aim to address the energy challenge, including third generation photovoltaics, solar hydrogen production, luminescent solar concentrators and other optoelectronic devices. [2-40].

Bio:

Federico Rosei (MSc (1996) and PhD (2001) from the University of Rome “La Sapienza”) is Full Professor at the Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, Varennes (QC) Canada, where he served as Director (07/2011–03/2019). He held the Canada Research Chair (Junior) in Nanostructured Organic and Inorganic Materials (2003–2013) and since May 2016 he holds the Canada Research Chair (Senior) in Nanostructured Materials. Since January 2014 he holds the UNESCO Chair in Materials and Technologies for Energy Conversion, Saving and Storage. Since March 2023 he holds the Chair of Industrial Chemistry at the Department of Chemical and Pharmaceutical Sciences, University of Trieste.

Dr. Rosei’s research interests focus on structure/property relationships in nanomaterials and their use as building blocks in emerging technologies. His research has been supported by multiple funding sources from the Province of Quebec, the Federal Government of Canada as well as international agencies, for a total in excess of M$ 18. He has worked in partnership with over twenty Canadian R&D companies. He is co-inventor of three patents and has published over 470 articles in prestigious international journals (including Science, Nature Phot., Nature Mater., Nature Chem., Proc. Nat. Acad. Sci., Adv. Mater., Angew. Chem., J. Am. Chem. Soc., Adv. Func. Mater., Adv. En. Mat., ACS Nano, Biomaterials, etc.), which have been cited over 24,000 times (H index = 80). He has been invited to speak at over 360 international conferences (50 Keynotes, 26 Plenaries) and has given over 270 seminars and colloquia, over 60 professional development lectures and 45 public lectures in 51 countries on all inhabited continents.

He is Fellow of numerous prestigious national and international societies and academies, including: the Royal Society of Canada, the European Academy of Science, the Academia Europaea, the European Academy of Sciences and Arts, the African Academy of Sciences, the World Academy of Art and Science, the World Academy of Ceramics, the American Physical Society, AAAS, the American Ceramic Society, Optica, SPIE, the Canadian Academy of Engineering, ASM International, the Royal Society of Chemistry (UK), the Institute of Physics, the Institution of Engineering and Technology, the Institute of Materials, Metallurgy and Mining, the Engineering Institute of Canada, the Australian Institute of Physics, the Chinese Chemical Society (Honorary), the Mexican Academy of Engineering (Corresponding), the Bangladesh Academy of Sciences (Foreign), Senior Member of IEEE, Global Young Academy (Alumnus) and Member of the Sigma Xi Society.

He has received several awards and honours, including the FQRNT Strategic Professorship (2002–2007), the Tan Chin Tuan visiting Fellowship (NTU 2008), the Senior Gledden Visiting Fellowship (UWA 2009), UWA Professor at Large (2010–2012), a Marie Curie Post-Doctoral Fellowship (2001), a F.W. Bessel Award (Humboldt foundation 2011), the Rutherford Memorial Medal in Chemistry (Royal Society of Canada 2011), the Herzberg Medal (Canadian Association of Physics 2013), the Brian Ives Lectureship (ASM international 2013), the Award for Excellence in Materials Chemistry (CSC 2014), the NSERC EWR Steacie Memorial Fellowship (2014), the José Vasconcelos Award for Education (World Cultural Council 2014), IEEE Distinguished Lectureships (NTC 2015–2016, Photonics Society 2020–2022, Electron Devices Society 2022–2024), the Lash Miller Award (ECS 2015), the Chang Jiang Scholar Award (China), the Khwarizmi International Award (Iran), the Recognition for Excellence in Mentorship (American Vacuum Society 2015), the Selby Fellowship (Australian Academy of Sciences 2016), the J.C. Polanyi Award (Canadian Society for Chemistry 2016), the Outstanding Engineer Award (IEEE Canada 2017), the President’s Visiting Fellowship for Distinguished Scientists (Chinese Academy of Sciences 2017), the Sigma Xi Distinguished Lectureship (2018–2020), the Sichuan 1000 talent (short term) award, the Lee Hsun Lecture Award (2018), the Changbai Mountain Friendship Award (2018), the IEEE Montreal Gold Medal (2018), the APS John Wheatley Award (2019), the Blaise Pascal Medal (European Academy of Science 2019), the Guangxi Golden Silkball Friendship Award (2020), the TMS Brimacombe Medal (2021), the Wolfson Fellowship (Royal Society), the Prix Urgel Archambault (ACFAS 2021), the Prix du Quebec “Marie Victorin” (2021), the J.C. Smith Medal (Engineering Institute of Canada 2022), the Premio Nazionale “Gentile da Fabriano” (Associazione Premio Gentile, Italy 2022), the Envoy of People’s Friendship Award (Jiangsu Province, 2022), the Brockhouse Medal (Canadian Association of Physics 2022), the Canadian Light Source – TK Sham Award in Materials Chemistry (CSC 2023), the Spirit of Salam Award (ICTP 2023), a Guggenheim Fellowship in Engineering (2023) and Knight of the National Order of Quebec (2023).

IEEE-EDS Distinguished Lecture: Survival Skills for Scientists

Rozhannaa Sothilingam — Thu, 09 Nov 2023 15:43:44 +0000

IEEE-EDS Distinguished Lecture: Survival Skills for Scientists Rozhannaa Soth… Thu, 11/09/2023 - 10:43

Speaker: Professor Federico Rosei

Date: November 16, 2023

Time: 11:00 AM - 12:00 PM

Location: Faculty Hall E7 7303

Abstract:

In this lecture, I will try to convey a feeling for our course on “Survival Skills for Scientists” [1]. This is a graduate course designed and developed in my department, in which we give basic advice and offer mentorship to our graduate students and post-docs. The central theme of this presentation is that succeeding in Science requires skills (often referred to as ‘soft professional skills’) beyond those needed for Science.

The lecture aims at giving basic guidance and mentoring to young scientists (typically science and engineering undergraduate and first year graduate students). The main topics are: The job market for graduates in science and engineering (industry, national labs and academia; advantages and disadvantages); Funding in modern science; Publish or perish; Publishing quality papers, having an impact; Presenting your work to your peers; The fundamental laws of ‘scientific survival’ (know yourself, plan ahead, and play chess); Ethics in modern science; Alternative careers.

Bio:

IEEE Solid-State Circuits Society Distinguished Lecture: Low-Power cryo-CMOS Design for Quantum Computing Applications

Andrea Pinos — Fri, 22 Sep 2023 11:27:52 +0000

IEEE Solid-State Circuits Society Distinguished Lecture: Low-Power cryo-CMOS Design for Quantum Computing Applications Andrea Pinos Fri, 09/22/2023 - 07:27

Speaker: Dr. Sudipto Chakraborty, IBM T.J. Watson Research Center
Date: Tuesday, September 26
Time: 1:00pm - 2:00pm
Location: EIT-3142

Abstract:

Practical challenges for cryogenic CMOS designs for next generation quantum computing will be described. Starting from the system level, the design considerations for a non-multiplexed, semi-autonomous, transmon qubit state controller (QSC) implemented in 14-nm CMOS FinFET technology are detailed. The QSC includes an augmented general-purpose digital processor that supports waveform generation and phase rotation operations combined with a low-power current-mode single-sideband upconversion I/Q mixer-based RF arbitrary waveform generator (AWG). Implemented in 14-nm CMOS FinFET technology, the QSC generates control signals in its target 4.5GHz to 5.5 GHz frequency range, achieving an SFDR > 50dB for a signal bandwidth of 500MHz. With the controller operating in the 4-K stage of a cryostat and connected to a transmon qubit in the cryostat’s millikelvin stage, measured transmon T1 and T2 coherence times were 75.7μs and 73μs, respectively, in each case comparable to results achieved using conventional room temperature controls. In further tests with transmons, a qubit-limited error rate of 7.76x10-4 per Clifford gate is achieved, again comparable to results achieved using room temperature controls. The QSC’s maximum RF output power is -18 dBm, and power dissipation per qubit under active control is 23mW.

Biography:

Sudipto Chakraborty received the B. Tech from Indian Institute of Technology, Kharagpur in 1998, and the Ph.D. in E.E. from the Georgia Institute of Technology in 2002. He worked as a researcher in the Georgia Electronic Design Center (GEDC) until 2004. From 2004 to 2016, he was a senior Member of the Technical Staff at Texas Instruments, where he contributed to lowpower integrated circuit design for more than 10 product families in the areas of automotive, wireless, medical, and microcontrollers. Since 2017, Sudipto has been working at the IBM T.J. Watson Research Center, where he leads the low-power circuit design for next generation quantum computing applications using nano-CMOS technologies. He has authored or coauthored more than 75 papers, two books and holds 86 U.S. patents. Dr. Chakraborty has served on the technical program committees of various conferences including the IEEE-CICC, RFIC, and IMS conferences, and was elected as an IBM master inventor in 2022 for his contributions.

Guest Lecture: Resistive Feedback DACs in high-SFDR continuous-time delta-sigma ADCs

Kora Sevo — Fri, 15 Sep 2023 14:47:50 +0000

Guest Lecture: Resistive Feedback DACs in high-SFDR continuous-time delta-sigma ADCs Kora Sevo Fri, 09/15/2023 - 10:47

Speaker: Dr. Sharvil Patil from Analog Devices, Inc., Toronto

Date: Wednesday, September 27, 2023

Time: 1:30 pm- 2:30pm

This seminar will be offered in-person and online.

Location (to attend in-person): EIT 3142.

Online: please register for the seminar at: https://uwaterloo.zoom.us/webinar/register/WN_EYjZRlCNSzuG-wOiTPuptw

After registering, you will receive a confirmation email containing information about joining the webinar.

Invited by: Professor Peter Levine

Abstract:

Resistivefeedback DACs (an alternative to current-steering DACs) present an interesting choice in continuous-time delta-sigma ADCs due to their low noise, low-supply operation, and simplicity. However, this seemingly nifty architecture presents unique mechanisms that cause distortion and spurs at the ADC output. Some of these are presented in this talk, along with methods to address them, in the context of a 76.8-MS/s, 1-MHz-bandwidth continuous-time delta-sigma ADC targeting >90dB SFDR, developed for integrated narrowband direct-conversion transceiver applications.

Biography:

Sharvil Patil received the B.E. degree (Hons.) in electrical and electronics engineering from the Birla Institute of Technology and Science, Pilani, India, in 2009, and the M.S., M.Phil., and Ph.D. degrees in electrical engineering from Columbia University, New York, NY, USA, in 2012, 2016, and 2017, respectively.

From 2010 to 2011, he was with ST Microelectronics, India, where he designed high-speed digital-to-analog converters. He interned at CEA-LETI, Grenoble, France, in the summer of 2013, investigating event-driven signal processors for wake-up receivers. He joined Analog Devices, Inc., Toronto, Canada, in 2016, where he works on high-speed analog-to-digital converters. His research interests include data conversion, analog and digital signal processing, and mixed-signal circuit design.

Dr. Patil received the Analog Devices Outstanding Student Designer Award at Columbia University in 2014.