IEEE Santa Clara Valley Chapter
Miniaturized Passive Radios for Wireless Tagging and IoT Applications
Speaker: Amin Arbabian, Stanford University
Time: September 18th (Thursday) evening 6.30 pm-8.30pm.
Abstract:
For over a hundred years and starting from Marconi’s experiment, several generations of wireless devices have connected people with stations and with each other, resulting in over 6 billion mobile subscribers in the world today. The next exponential growth in connectivity is no longer in access between people but in connecting objects and machines in the age of “Internet of Things (IoT)”. Projections show sensor demand growing from billions in 2012 to trillions within the next decade and this is largely fueled by emergence of smart sensors that combine computation, communication, and sensing.
In terms of connectivity, battery-less radios are the ultimate frontier in scaling the size and cost of a communication node. However, there are several key challenges that still need to be addressed in this area. Cost (dominated by board and interfaces), number of readable transponders (and latency in doing so), data-rate, localization and miniaturization are the issues faced by today’s technologies. Addressing these challenges will open up new application areas for IoT. This could be in commercial, medical or industrial domains.
This talk will present a single-chip 24GHz/60GHz passive and pad-less radio implemented in 65nm CMOS. This chip is fully self-sufficient with no pads or any external components (e.g. power supply). It integrates RX and TX antennas and provides a communication range up to 50 cm. A modified M-PPM 60GHz transmitter is used to communicate the data sequence. A multi-access algorithm is implemented to enable communication with thousands of radios. Pulse signaling enables real-time localization through time-of-flight. The chip operates with a standby recovered power of less than 1.5uW coming from the base station.
Bio:
Amin Arbabian received his Ph.D. degree in electrical engineering and computer sciences from UC Berkeley in 2011. In 2012 he joined Stanford University, as an Assistant Professor of Electrical Engineering, where he is also a School of Engineering Terman Fellow. In 2007 and 2008, he was part of the initial engineering team at a new startup company (Tagarray, Inc.) involved with a sub-microwatt RFID project. He spent summer 2010 at Qualcomm’s Corporate R&D division designing system and circuit architecture solutions for next generation ultra-low power wireless transceivers. Amin’s research interests are in microwave and millimeter-wave circuits and systems, integrated antennas and antenna arrays, physics of medical imaging, and ultra-low power sensors.
Amin is the recipient/co-recipient of multiple awards, including the 2014 DARPA Young Faculty Award, 2013 IEEE International Conference on Ultra-Wideband (ICUWB) best paper award, 2013 Hellman Faculty Scholarship, 2010 IEEE Jack Kilby Award for Outstanding Student Paper at the International Solid-State Circuits Conference, two time second place Best Student Paper Awards at 2008 and 2011 RFIC symposiums, the 2009 CITRIS (Center for Information Technology Research in the Interest of Society at UC Berkeley) Big Ideas Challenge Award and the UC Berkeley Bears Breaking Boundaries award, and the 2010-11 as well as 2014-15 Qualcomm Innovation fellowships.
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