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Micro-Scale Robots: Magnetic Actuation for Wireless Manipulation

Room TRS2164, 575 Bay Street (Entrance at 55 Dundas Street West)

Monday February 13, 2017 at 12:00 p.m. Dr. Diller, Assistant Professor in the department of Mechanical and Industrial Engineering at the University of Toronto, will be presenting “Micro-Scale Robots: Magnetic Actuation for Wireless Manipulation”. Speaker: Dr. Diller Assistant Professor, Mechanical and Industrial Engineering, University of Toronto Day & Time: Monday, February 13th, 2017 12:00 p.m. to 1:00 p.m. Location: Room TRS2164, 575 Bay Street (Entrance at 55 Dundas Street West) Ryerson University (TRS2164 is on the 8th floor of the building) Organizer: WIE, Measurement/Instrumentation-Robotics, Magnetics, Computer Science Department of Ryerson University Abstract: Micro-scale mobile robots can physically access small spaces in a versatile and non-invasive manner. Such microrobots under 1 mm in size have potential unique applications for object manipulation, local sensing and cargo delivery in healthcare, microfluidics and advanced materials fabrication. These devices are powered and controlled remotely using externally-applied magnetic fields for motion in 2D and 3D. This talk will introduce our experimental work in micro-manipulation using single and teams of these devices. Biography: Dr. Diller is an Assistant Professor in the department of Mechanical and Industrial Engineering at the University of Toronto. He received his B.S. and M.S. in Mechanical Engineering at Case Western Reserve University, and Ph.D. at Carnegie Mellon University in 2013. His current work focuses on fabrication and control relating to remote actuation of micro-scale devices using magnetic fields, medical robotics, smart materials, and swimming at small size scales.

Innovative Radio Systems and Antennas for Space Telecommunication Applications

BA 1230, 40 St. George Street, Toronto

Wednesday February 8, 2017 at 4:00 p.m. Dr. Hervé Legay, Thales Alenia Space, will be presenting “Innovative Radio Systems and Antennas for Space Telecommunication Applications”. Speaker: Dr. Hervé Legay Thales Alenia Space, France Day & Time: Wednesday, February 8th, 2017 4:00 pm Location: BA 1230, Bahen Centre for Information Technology 40 St. George Street, Toronto, ON M5S 2E4 Contact: Sean V. Hum Organizer: IEEE Toronto Electromagnetics & Radiation Chapter Abstract: We stand at the dawn of a new era for the space telecommunication ecosystem, marked by a consistent exponential growth in throughput as well as the irruption of new systems based on constellation of satellites. For these challenges, new models for disruptive innovation are imagined for the future generation of payloads: • Developing new antennas and RF subsystems concepts inspired by optics, or based on metamaterials (composite media with an internal periodic structure that provides specific characteristics such as filtering, phase-shifting, absorbing, etc.) • Integrating of smart and agile RF systems with signal processing capability that exploit mechanically actuated RF components, smart RF surfaces as well as innovative deployment schemes. • Introducing into space cost efficient manufacturing techniques, based on additive and subtractive processes, metallised plastics, thin organic large area electronics, etc. Recent achievements in these innovative concepts developed at Thales Alenia Space will be presented, identifying their perspectives and their limitations. Biography: Hervé Legay was born in 1965. He received the electrical engineering and Ph.D. degrees from the National Institute of Applied Sciences (INSA), Rennes, France, in 1988 and 1991, respectively. For two years, he was a Postdoctoral Fellow with the University of Manitoba, Winnipeg, MB, Canada, where he developed innovating planar antennas. He joined Alcatel Space, Toulouse, France, in 1994, which is now Thales Alenia Space. He initially conducted studies in the areas of telecommunication satellite antennas and antenna processing. He designed the architecture and the antijamming process of the Syracuse 3 active antenna. He is the author of 27 patents. He is currently responsible for the R&T studies on space antennas, director of the joint laboratory MERLIN involving Thales Alenia Space and IETR (Institut d’electronique et de Télécommunication de Rennes). He coordinates the collaborations with academic and research partners. He was appointed Antenna Expert in Thales. Dr. Legay is a co-prize-winner of the 2007 Schelkunoff prize paper award. He received the Gold Thales Awards in 2008, a reward for the best innovations in the group Thales.

Intermodulation Distortion Mitigation in Microwave Amplifiers and Frequency Converters

Room WB116, Wallberg Building 184 College St, Toronto, ON M5S 3E4

Monday January 30, 2017 at 2:10 p.m. Professor Carlos Saavedra, Queen’s University and Associate Editor of the IEEE Transactions on Microwave Theory and Techniques, will be presenting “Intermodulation Distortion Mitigation in Microwave Amplifiers and Frequency Converters”. Event Slides: Intermodulation Distortion Mitigation in Microwave Amplifiers and Frequency Converters Speaker: Professor Carlos Saavedra Queen’s University, Kingston Associate Editor of the IEEE Transactions on Microwave Theory and Techniques Day & Time: Monday, January 30th, 2017 2:10 pm – 3:00 pm Location: Room WB116, Wallberg Building 184 College St, Toronto, ON M5S 3E4 Contact: Dustin Dunwell Organizer: Solid State Circuit Society Cost: Free for everyone.  Complimentary refreshments will be provided. Abstract: Intermodulation distortion (IMD) refers to the phenomenon where the spectral lines of an information‐bearing signal interact with themselves to yield new, undesired, spectral lines as they pass through a circuit. While some of the spurious tones are easily eliminated through filtering, others are more difficult to deal with because they appear within the band of the information signal and interfere with it.  The study of IMD has a rich history and multiple techniques have been developed over time to mitigate it.  One such method is known as derivative superposition (DS), which reduces IMD distortion by using an auxiliary circuit to generate an out‐of‐phase replica of the IMD tones produced by the main circuit.  First introduced in the late 1990s, DS has attracted much attention due to its small footprint and low power consumption.  This talk will discuss work we have carried out at Queen’s that uses DS and digital assist to improve the output third‐order intercept point (OIP3) of gallium‐nitride (GaN) power amplifiers from by +40 dBm to +50 dBm over a 5 GHz span.  A stand‐alone distortion cancelling cell will also be presented which can improve the OIP3 of a generic off‐the‐shelf microwave amplifier by 7.5 dB. The talk will conclude with a discussion of mixer linearization using DS and digital assist techniques. Biography: Carlos Saavedra obtained the Ph.D. degree from Cornell University, Ithaca, New York, in 1998. From 1998 to 2000 he was a Senior Engineer at Millitech Corporation (North Hampton, Massachusetts) and in 2000 he joined Queen’s University at Kingston where he currently holds the rank of Professor. He is an Associate Editor of the IEEE Transactions on Microwave Theory and Techniques, is a member of the Technical Program Review Committee of the IEEE International Microwave Symposium (IMS) and of the Steering Committee of the IEEE NEWCAS conference.  He is Past Chair of the IEEE MTT‐S Technical Coordinating Committee (TCC‐22) on Signal Generation and Frequency Conversion and was Guest Editor of the September 2013 IEEE Microwave Magazine Focus Issue titled “100 Years of Mixer Technology”. He served on the Steering and Technical Program Committees of the 2012 IEEE IMS and was a member of the IEEE RFIC Symposium TPC from 2008 to 2011.  Prof. Saavedra is a three‐time recipient of the third‐year ECE undergraduate teaching award at Queen’s University.