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SUMMARY:Transfer of Power and Data Over Coupled LC Resonators
DTSTART:20170906T110000
DTEND:20170906T120000
DTSTAMP:20260501T201033Z
UID:9e6eec4e02ed1c072b5dc412830be04f4c4fd73de05c7418f6b51c3e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Asad A. Abidi\nInstitute of Microengineering - Distingui
 shed Lecture\n\nAbstract: Numerous applications are arising where an activ
 e circuit is powered by a remote unit\, which also exchanges bidirectional
  data. In our application\, an active circuit is implanted in the brain\, 
 powered by a small battery worn in an external earpiece. The implanted cir
 cuit stimulates and senses a dense array of electrodes on command\, and co
 mmunicates digitized waveforms to the external unit.\nTwo flat coils coupl
 ed magnetically offer a practically useful transcranium wireless connectio
 n. Carrier frequencies of 10 to 30 MHz propagate with little loss through 
 human tissue\, and are well-suited for transmission through coils with a 3
 -cm diameter.\nWe have exploited a little-known property of coupled resona
 tors which results in self-regulation of received load voltage over a rang
 e of coil separations and axial misalignments. We supplement this with cir
 cuit methods to regulate voltage over 10X changes in load current. A robus
 t power link has been realized to deliver a regulated 20 mW to the implant
 .\nA 4Mb/s data link that keys the implant load has also been realized ove
 r the same coupled resonators. With full CDR included\, the uplink consume
 s 100X lower power than the previous state-of-the-art.\n\nBio: Asad Abidi 
 received the BSc degree in Electrical Engineering from Imperial College\, 
 London in 1976\, and the PhD from the University of California\, Berkeley 
 in 1982. He worked at Bell Laboratories\, Murray Hill until 1985\, and the
 n joined the faculty of the University of California\, Los Angeles where h
 e is Distinguished Chancellor’s Professor of Electrical Engineering. Wit
 h his students\, he has developed many of the radio circuits and architect
 ures that enable today’s mobile devices.\nAmong other awards\, Professor
  Abidi has received the 2008 IEEE Donald O. Pederson Award in Solid-State 
 Circuits and the Best Paper Award from the IEEE Journal of Solid-State Cir
 cuits in 2012. The University of California\, Berkeley’s Department of E
 ECS recognized him as a Distinguished Alumnus in 2015. He is a Fellow of I
 EEE since 1996\, and was elected to the US National Academy of Engineering
  and to TWAS\, the world academy of sciences.\n\n\nDue to logistic constra
 ints\, this lecture will take place live at EPFL campus in lecture hall ME
 D 0 1418 and is exceptionally not transmitted to Neuchâtel.
LOCATION:MED 0 1418 https://plan.epfl.ch/?room==MED%200%201418
STATUS:CONFIRMED
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