Publicado em: 05/04/2013

Palestra Prof. Mohamad Sawan (Polytech, Montreal) – 10 anos PGMicro/40 anos PPGC

Como parte das comemorações dos 10 anos do PGMicro, 40 anos do PPGC e 30 anos do GME, no dia 08 de abril, segunda-feira, às 13h e 30min, acontecerá a palestra com o Prof. Mohamad Sawan, do Polytech de Montreal. O evento acontecerá no Anfiteatro do prédio 67 – Centro de Eventos do Instituto de Informática da UFRGS.

Title : Energy Harvesting and Wireless Data Exchange for Implantable Medical Devices

Abstract : Emerging smart implantable and remotely controllable devices for diagnostic and recovery of neural vital functions are promising alternative to study neural activities underlying cognitive functions and pathologies. These devices require safe source of energy and robust communication interfaces. This seminar covers architectures intended for wireless neurorecording and neurostimulation using advanced bioelectronic building blocks. We focus on harvesting energy and wireless data links needed to operate these implantable biosystems. First, we will introduce power sources and energy transfer using transcutaneous inductive powering, wearable systems, rechargeable batteries, RF circuits and Radio signals. Then, energy collection includes single and multiple electromagnetic inductive links using custom integrated solutions, their conditioning and calibration techniques, and automatic tuning of transmitted energy level will be described. Among the important building blocks active rectifiers, low-dropout voltage regulator, multi-link electromagnetic interfaces, and power efficiency data recovery modules. Regarding up- and down-link data transmission interfaces, several modulations and demodulations techniques. Then, we will describe a new dual low-power transmission FSK-OOK technique dedicated to establish fast but low-power communications with medical implants operating at Industrial, Scientific and Medical (ISM) frequency band. Special attention will be paid to multidimensional implementation challenges such as power management, low-power consumption circuits, high-data rate communication modules, small-size, low-weight and reliable devices.

Bio: Mohamad Sawan received the Ph.D. degree in electrical engineering from Sherbrooke University, Canada, in 1990. He joined Polytechnique Montreal in 1991, where he is currently a Professor of Microelectronics and Biomedical Engineering. Dr. Sawan is Deputy Editor-in Chief of the IEEE Transactions on Circuits and Systems-II, Associate Editor of the IEEE Transactions on Biomedical Circuits and Systems, the IEEE Transactions on Biomedical Engineering, and the International Journal of Circuit Theory and Applications. He is founder of the Polystim Neurotechnologies Laboratory, and Founder Co-Founder of the International IEEE-NewCAS, IEEE-BioCAS, and IEEE-ICECS conferences. His scientific interests are the design and testing of analog and mixed-signal circuits and systems, integration, and assembly. He holds the Canada Research Chair in Smart Medical Devices, and he is leading the Microsystems Strategic Alliance of Quebec (ReSMiQ).

Dr. Sawan published more than 600 peer reviewed papers, two books, 10 book chapters, and 12 patents. He received several awards, among them the 2003 Barbara Turnbull Award, the American University of Science and Technology Medal, and the ACFAS – Bombardier and Jacques-Rousseau Awards. Dr. Sawan is Fellow of the IEEE, Fellow of the Canadian Academy of Engineering, and Fellow of the Engineering Institutes of Canada. He is also “Officer” of the National Order of Quebec.