Events
Title: Josephson Arbitrary Waveform Synthesizer as a Quantum Standard of Voltage and Current Harmonics
Speaker: Dr. Dimitrios Georgakopoulos, Senior Research Scientist, National Measurement Institute, Sydney, Australia
Date/Time:Â Thursday, July 09, 2020, 6:30 pm – 7:30 p.m. EDT
Abstract: Josephson arbitrary waveform synthesizers (JAWS) are becoming a viable technology for national metrology institutes and industry to establish quantum standards of direct and alternating voltage. At the National Measurement Institute of Australia (NMIA) we have extended the application of the JAWS to provide a standard of both the magnitude and the phase of harmonics in a distorted waveform. Harmonic analysis is critical in a number of industrial applications such as electric power systems, power electronics, characterization of systems and materials and acoustics and vibration. At present, in the calibrations of power analyzers, the traceability of the magnitude of the harmonics is based on ac-dc transfer measurements. However, there is a gap in the traceability of the phase of the harmonics relative to the fundamental. The NMIA calibration system uses a JAWS chip from the National Institute of Standards and Technology (NIST), USA, a precision inductive voltage divider and a set of current shunts designed and manufactured by NMIA. For distorted waveforms with harmonic magnitudes from 5% to 40% of the fundamental, the calibration system can measure odd harmonics up to the 39th with magnitude uncertainties better than 0.001 % of the fundamental for voltage (from 0.01 V to 240 V) and current (from 0.005 A to 20 A) waveforms. The best phase uncertainties range from 0.001° to 0.010° (k = 2.0), depending on the harmonic number and harmonic magnitude. We anticipate that the ability of the JAWS to generate distorted waveforms with the lowest possible uncertainty in the magnitude, and phase spectra will make it a unique tool for low-frequency spectrum analysis.
Speaker’s Bio: Dimitrios Georgakopoulos (IEEE AM’11–M’12–SM’12) was born in Athens, Greece, in 1972. He received his B.Eng. degree in electrical engineering from the Technological Educational Institution of Piraeus, Egaleo, Greece, in 1996; his M.Sc. degree in electronic instrumentation systems from the University of Manchester, Manchester, UK, in 1999; and Ph.D. in electrical engineering and electronics from the University of Manchester Institute of Science and Technology, Manchester, UK, in 2002. From 2002 to 2007, he worked as a research scientist at the National Physical Laboratory, UK. In 2007, he joined the National Measurement Institute, Australia, as a research scientist, where he has been working on the development of quantum voltage standards and low frequency electromagnetic compatibility (EMC) standards. Dr Georgakopoulos is an Associate Editor of the IEEE Transactions on Instrumentation and Measurement, member of the IEEE IMS Measurements in Power Systems Committee (TC‑39), member of the NATA Accreditation Advisory Committee for Calibrations, and member of the American Association for the Advancement of Science (AAAS), USA.
Admission: Free, but registration is required at https://events.vtools.ieee.
IEEE Ottawa Section: MTT-S / AP-S Chapter presents:
Title: Characterization and Modeling of GaN HEMT Trapping Effects for Microwave Circuit Design
Date: September 2nd, 2020
Time: 11 AM (ET)
Register at: https://events.vtools.ieee.org/m/238482
This talk will review some recent advancements achieved on the characterization and modelling of the trapping effects felt in GaN HEMT transistors, and their impact on microwave circuit design. Because of their nowadays importance, a particular attention will be payed to applications on high power amplifiers for mobile wireless infrastructure and pulsed radar applications.
For that, the talk will start by recollecting the most common model formulations adopted for the various levels of RF engineering, from the device level (physics) to the transistor (circuit) and amplifier (system) level. Starting by the Shockley-Read-Hall capture and emission processes we will be able to understand one of the fundamental signatures of trapping effects, the significantly different charge and discharging time constants, and its impact on power amplifier nonlinear distortion behavior. Then, some widely adopted approaches of the channel current transients’ characterization are addressed and the talk concludes by presenting some illustrative cases of application to RF high power amplifiers.
Speaker: Jose C. Pedro
José C. Pedro received the Diploma, Ph.D., and Habilitation degrees in electronics and telecommunications engineering from the Universidade de Aveiro, Aveiro, Portugal, in 1985, 1993, and 2002, respectively.
He is currently a Full Professor with the Universidade de Aveiro and head of the Aveiro site of the Instituto de Telecomunicações. He has authored 2 books and authored or co-authored more than 200 papers in international journals and symposia. His current research interests include active device modelling and the analysis and design of various nonlinear microwave circuits.
Dr. Pedro was a recipient of various prizes including the 1993 Marconi Young Scientist Award, the 2000 Institution of Electrical Engineers Measurement Prize, the 2015 EuMC Best Paper Microwave Prize, and the Microwave Distinguished Educator Award. He has served the scientific community as a Reviewer and an Editor for several conferences and journals, namely, the IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, for which he was the Editor-in-Chief.
Date and Place: The event will be held online on September 26th and 27th, 2020.
“Every accomplishment starts with the decision to try†~ John F. Kennedy
What?
New to Hackathons? Are you also interested in participating in IEEEXtreme 14.0? IEEE WIE Ottawa presents the first ever Mock Hackathon in Ottawa! Win Exciting Prizes and get experience with us. No need to think of an idea! The questions will be given to you. Our mentors will further help you to get a head start in your hackathon journey! This is a practice event just for you! Learn more about IEEEXtreme here-> https://ieeextreme.org/
When?
September 26th and 27th, 2020
Where?
The event is fully online including the mentorship*.
Agenda
September 26th, 2020
01:00 PM The opening ceremony
02:00 PM Commencement of Hackathon
05:00 PM Final Submission
September 27th, 2020
01:00 PM Results declaration webinar
01:30 PM Prize announcement
02:00 PM The closing ceremony
For More Details Visit: https://wie.ieeeottawa.ca/hack613-the-ottawa-hackathon/
![Antenna Arrays Seminar](https://www.ieeeottawa.ca/wp-content/uploads/2020/09/antennas-225x300.png)
Date: October 7th 2020
Time: 5:00 – 6:30 pm EDT
Venue: Online – http://bit.ly/DJKYPAAS
Event Contact: Daniel J King (danieljamesking3@gmail.com)
IEEE Ottawa Young Professional Affinity Group presents an Antenna Arrays Seminar by MASc. Daniel J. King. Feel free to register and join us in this exciting event. Some of the topics covered are:
- A basic introduction to the theory and practice of antenna arrays;
- Information about current research opportunities and applications;
- Specific examples in mm-Wave applications!
Register today to this virtual event!
More info here: https://www.ieeeottawa.ca/wp-content/uploads/2020/09/antennas.pdf
![Enviropreneurship: Bridging the Gap between Innovation and Function](https://www.ieeeottawa.ca/wp-content/uploads/2020/11/Environmental-Entrepreneurship-13260-768x548-1-300x214.jpg)
About this Event
Environmental Entrepreneurship: Bridging Gap between Innovation and Function
Abstract:
Environmental challenges of the current century are systemic threats
to the fabric of our civilization. In this context, environmental
entrepreneurship has emerged as a key mitigation concept that combines
economic and environmental dimensions by leveraging state-of-the-art
technology innovations. Seeing entrepreneurship through the lens of
engineering innovation is crucial to produce actionable theory for
sustainable technology. But what are the environmental entrepreneurship
elements, challenges, and success factors? How can researchers,
technology innovators, and entrepreneurs connect to this emerging field?
This seminar introduces environmental entrepreneurship as the process
of discovering, evaluating, and exploiting market forces that allow to
have effective and fast business cases in environmentally-relevant
markets. The seminar will also discuss views on bridging academic
innovation and technology productization to deliver pragmatic solutions
to environmental challenges of the planet.
Speaker Biography
Dr. Mostafa Farrokhabadi is the Senior Director of Technology at
BluWave-ai, an internationally award-winning startup offering
data-driven control and optimization solutions for smart grids. He has
10 years of experience in designing mission-critical grid solutions for
industry and academia, including technical leadership of a $6M
international consortium in Electric Grid Modernization, and Smart Grid
projects with Hatch and Canadian Solar. Mostafa has authored/co-authored
several high-impact technical papers and patents on intelligent control
and optimization of renewable-penetrated grids. Mostafa obtained his
Ph.D. in Electrical and Computer Engineering from the University of
Waterloo. He has also studied and performed research in Sweden at KTH
and Germany at KIT. Mostafa has received multiple business, research,
and teaching awards, including the prestigious University of Waterloo
Doctoral Thesis Completion Award and Ottawa’s Forty Under 40. Currently,
he serves as an Associate Editor of the IEEE Transactions on Smart Grid
and IEEE DataPort, and Secretary of IEEE Ottawa Section.