Stephen O'Driscoll
Assistant Professor, Electrical and Computer Engineering
University of California, Davis

office: Kemper Engineering Building (Engineering II) Room 2039 (map)
postal: Electrical and Computer Engineering, University of California, One Shields Avenue, Davis, CA 95616-5294
phone: 530-754-0435             fax: 530-752-8428
email:   url:

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Implant Positioning System (IPS)

Knowledge of the precise position of implanted devices enables measurements taken by the device to be correctly interpreted and greatly simplifies post-implantation manipulation of the device (e.g. when injecting refills into the reservoir of implanted drug delivery pumps precise knowledge of the position allows the refill to be delivered in one shot, reducing patient discomfort and the probability of infection). When we deliver power to implanted devices a current is induced in the receiving antenna which generates a weak electromagnetic field, the "scattered field". The Implant Positioning System deduces the implant location from spatial variations in this scattered field. This work poses a number of unique challenges in analog and RF circuit design, electromagnetic analysis, and signal processing.

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› Biomedical Electronics
  › Wireless Power Transfer
  › IPS
  › Neural Interfaces
  › Smart Pill
› Analog Design Automation
  › Analog Optimization
  › Genetic Analog