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This paper presents a fully implantable, wirelessly powered subcutaneous amperometric biosensor. We propose a novel ultra-low power all-digital phase-locked loop (ADPLL) based potentiostat architecture for electrochemical sensing. The system is wirelessly powered by near-field RF coupling of an on-chip antenna to an external coil at 915 MHz. Bi-directional wireless telemetry supports data transmission...
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