Remote power and data communication dedicated to implanted medical devices (IMD)


Event details

Date 24.11.2021 17:1518:15  
Speaker Dehollain Catherine
Category Inaugural lectures - Honorary Lecture
In the case of an implanted medical device (IMD), it is important to design an implant which can be remotely powered by the external base station through (e.g.) near-field inductive coupling in order to avoid surgery to replace the battery. Moreover, the IMD needs to exchange key information with the external base station through radio frequency communication. First, the base station needs to send energy wirelessly to the IMD. This energy is stored in a load capacitor or is used to recharge a medical grade battery. Then, the sensor which is part of the IMD performs a measurement (e.g. measurement of the internal temperature) which is transformed in a digital signal thanks to an analog to digital converter. This digital signal modulates the carrier of the implanted transmitter to generate the modulated signal which is sent wirelessly to the receiver of the external base station. Therefore, wireless remote powering and wireless data communication will constitute the main objectives of this talk. Different practical examples will be presented (e.g. implanted brain interface, monitoring of a small rodent, etc).

Short biography:
Catherine Dehollain received the Master’s degree in electrical engineering and the Ph.D. degree from EPFL in 1982 and 1995, respectively. From 1982 to 1984, she was a Research Assistant at EPFL. In 1984, she joined the Motorola European Center for Research and Development, Switzerland, where she designed integrated circuits applied to telecommunications. In 1990, she joined EPFL as a Senior Assistant where she performed her PhD thesis on impedance broadband matching. Since 1995, she is responsible at EPFL of the RFIC Group dedicated to radio frequencies activities. From 2006 to 2014, she was a Maître d’Enseignement et de Recherche (MER) at EPFL. Since 2014, she has been Adjunct Professor at EPFL. She is an author or coauthor of 7 scientific books and of 200 scientific publications. Her research interests include biomedical remotely powered sensors, RFIDs, RF circuits, low power analog circuits, and electrical filters.

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  • Faculté STI – Décanat & Institut IEM