Power Harvesting and Data Exchange Links

A Chip Integrity Monitor for Evaluating Moisture/Ion Ingress in mm-Sized Single-Chip Implants

“…For example, for a clock frequency of 50 MHz, the minimum discharge time-step that can be measured is 20 ns. Using (3), and an average value of 24 fF for C eq , it Cell Resistance (T ) Figure 12. Dry measurement results for the whole sensor array.…”

“…Striving towards less invasive therapies and inspired by scaling within the semiconductor industry, in the past years, tremendous efforts have been made in miniaturizing active implantable medical devices (AIMDs) [1], [2]. Further scaling of AIMDs, however, has always been limited by the physical constraints of the battery [3], [4]. In this regard, wireless energy transfer techniques using electromagnetic [5], [6], [7], [8], [9] and acoustic energy [10], [11], [12] have been recently proposed as alternative energy delivery solutions that can circumvent the size restriction of the battery and enable the realization of free-floating mm-sized single-chip implants.…”