Phillip Nadeau

Postdoctoral Researcher, MIT

Welcome!  I work at the intersection of ultra-low energy electronics and biomedical applications.

I completed my Ph.D. and S.M. in Electrical Engineering and Computer Science with Professor Anantha Chandrakasan at MIT in 2016 and 2011 respectively, and the B.A.Sc. in Electrical Engineering from the University of Waterloo, Canada in 2009.

I have held internships in a number of organizations, including Texas Instruments, Intel, the Canadian Department of Defense, Sunnybrook Research Institute, Rogers Cable, and Ontario Power Generation.

Research Work

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Prolonged energy harvesting for ingestible devices

In this work we reported the design and operation of an energy harvesting galvanic cell during continuous in vivo temperature sensing and wireless communication from the stomach. The device delivered an average power of 0.23 μW mm−2 of electrode area for an average of 6.1 days of temperature measurements in the gastrointestinal tract of pigs. This power- harvesting cell could provide power to the next generation of ingestible electronic devices for prolonged periods of time inside the gastrointestinal tract.


Ultra-low energy wake-up oscillator for IoT

We demonstrated a 4.2pW oscillator where the key idea was to minimize wasted short circuit current. While operating across a wide range of low frequencies from 18 Hz to 1000 Hz, the core oscillator without reference consumes 110 fJ/cycle at 0.6 V. We also used an integrated duty-cycled current source to set the reference frequency. The combined system consumes a total power of 4.2 pW at 18 Hz, resulting in 230 fJ/cycle at 0.6 V.

mems_radio MEMS-assisted RF receiver

We designed a three-channel 2.4GHz On-Off-Keying receiver using film bulk acoustic resonators resonators to enable multiple sub-channels of operation within a band at a very low energy per received bit. The receive chain comprises an LNA/mixer architecture that efficiently multiplexes signal pathways without degrading the quality factor of the resonators. The single-balanced mixer and ultra-low power ring oscillator convert the signal to IF, where it is efficiently amplified to enable envelope detection. The receiver consumes a total of 180pJ/b from a 0.7V supply while achieving a BER = 10^-3 sensitivity of -67 dBm at a 1 Mb/s data rate.