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SUMMARY:ECE PhD Proposal Review: Giuseppe Michetti
DESCRIPTION:PhD Proposal Review: IoT Front-Ends enhanced by Time-Variant RF-MEMS based Circuits \nGiuseppe Michetti \nLocation: Zoom \nAbstract: Implementation of cheap\, scalable radio frequency (RF) front ends in the context of the Internet of Things and 5G devices calls for reconfigurable and spectrally efficient components and circuits operating at RF. In the 4G era\, micro-electro-mechanical systems (MEMS) based on piezoelectric resonators have dominated the filter market for mobile radios\, due to their selectively narrow bandwidth (BW)\, small footprint\, and for their capability to be mass-produced with standard CMOS techniques.\nFor succeeding in the 5G era\, micro-acoustic technologies need to take on the challenge of large data-rates and potentially novel RF front-end architectures. To this end\, I introduce spatio-temporal modulation as a powerful tool to enrich the state-of-the-art of RF front-ends\, and I demonstrate how this can be effectively used to fundamentally increase the performance of high-quality factor microsystems operating at RF.\nFor the case of full-duplex systems\, a nonreciprocal filter structure is proposed\, together with its modeling\, optimization strategies\, and experimental demos at 1GHz and 2.5GHz. Starting from this novel modulation scheme\, MEMS devices are used in place of other resonant technologies\, to enable a filter that features strong nonreciprocal propagation at low power consumption (10s of uW) and high linearity (>30dBm).\nFor the case of half-duplex systems\, a novel modulated filter architecture is introduced and modeled showing its capability of real-time BW control\, as well as to fundamentally extend the BW limited of MEMS filters\, typically associated with their limited piezoelectric coupling coefficient (k¬t2)\, without the need of lossy tunable components. Unprecedented BW tuning ratio (3:1) is experimentally demonstrated at VHF (300MHz) using commercial off-the-shelf resonators\, within a compact footprint\, large absolute BW\, and at a reduced fabrication complexity.\nTo cast this device into next-generation mobile radios\, custom-built MEMS devices are developed and characterized for these filter architectures. MEMS device designs for these architectures are proposed\, leveraging the novel Sc- doped AlN thin-films technology recently added to the Northeastern portfolio of microfabrication capabilities. \n 
URL:https://coe.northeastern.edu/event/ece-phd-proposal-review-giuseppe-michetti/
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SUMMARY:Beyond the Pandemic: Transformative Engineering
DESCRIPTION:In the College of Engineering\, we prepare the next generation of engineers to solve real-world global challenges. Join Dean Gregory D. Abowd for a panel discussion on the ways in which the pandemic has influenced our engineering curriculum and driven our students and faculty to innovate new solutions to issues related to health\, sustainability\, security and more. \nFaculty presenters include: \n\nDr. Jerome F. Hajjar\, CDM Smith Professor and Chair of Civil & Environmental Engineering\, Affiliated Faculty of Marine & Environmental Sciences\nDr. Lee Makowski\, Professor and Chair of Bioengineering\, Professor of Chemistry & Chemical Biology\, Affiliated Faculty of Electrical & Computer Engineering\nDr. Marilyn Minus\, Professor and Chair of Mechanical & Industrial Engineering\nDr. Srinivas Tadigadapa\, Professor and Chair of Electrical & Computer Engineering\nDr. Rebecca Willits\, Professor and Chairperson of Chemical Engineering\, Affiliated Faculty of Bioengineering
URL:https://coe.northeastern.edu/event/beyond-the-pandemic-transformative-engineering-2/
ORGANIZER;CN="Alumni Relations":MAILTO:alumni@northeastern.edu
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DTSTART;TZID=America/New_York:20220210T180000
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SUMMARY:Summer1\, 2022 Panama DOC: International Applications of Fluid Mechanics - Info Session
DESCRIPTION:If you are interested in learning fluid mechanics through relevant examples in an international setting in a Dialogue Of Civilization (DOC) program this summer in Panama\, please join the Zoom Info Session on Thursday\, February 10th at 6:00 pm. By participating in this program\, you will gain an international perspective on the real-life applications of fluid mechanics\, while learning about the culture and history of this burgeoning and diverse Latin America country. This program will take place in Summer 1\, 2022 and will include travel to 3 relevant engineering projects (including the Panama Canal) in different locations in Panama. Two courses are offered under this program: \n\nME 3480 – International Applications of Fluid Mechanics (4SH; equivalent to ME 3475\, ME degree core course requirement)\nStudies fundamental principles in fluid mechanics in an international setting. Students have an opportunity to travel to a foreign locale to develop theoretical understanding while experiencing the issues that affect applications of fluids engineering in a culture and environment different from their own. Topics include hydrostatics (pressure distribution\, forces on submerged surfaces\, and buoyancy); Newton’s law of viscosity; dimensional analysis; integral forms of basic laws (conservation of mass\, momentum\, and energy); pipe flow analysis; differential formulation of basic laws including Navier-Stokes equations; and the concept of boundary layer and drag coefficient.\n\n\nME 4699 – Special Topics in Mechanical Engineering: Fluid Mechanics Engineering Analysis within the Socio-Cultural\, Political and Economic History of Panama (4SH)\nThis course is designed for college undergraduate students who are interested in addressing and analyzing fluid mechanics related engineering problems and solutions in the context of the traditions\, cultures\, and socioeconomic and political history of Panama\, seeking to obtain a solid grasp on the historical developments of the country and their effects on contemporary fluid mechanics engineering projects and issues.\n\nThe courses and program will be taught and run by Prof. Carlos Hidrovo Chavez. \nPlease visit the program website for more information.
URL:https://coe.northeastern.edu/event/summer1-2022-panama-doc-international-applications-of-fluid-mechanics-info-session/
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