Download A CMOS Self-Powered Front-End Architecture for Subcutaneous by Jordi Colomer-Farrarons, Pere MIRIBEL PDF

By Jordi Colomer-Farrarons, Pere MIRIBEL

A CMOS Self-Powered Front-End structure for Subcutaneous Event-Detector units offers the perception and prototype cognizance of a Self-Powered structure for subcutaneous detector units. The structure is designed to paintings as a true/false (event detector) or threshold point alarm of a few components, ions, etc... which are detected via a three-electrodes amperometric BioSensor method. The gadget is envisaged as a Low-Power subcutaneous implantable software powered by means of an inductive hyperlink, one emitter antenna on the exterior part of the outside and the receiver antenna lower than the surface. The sensor is managed with a Potentiostat circuit after which, a post-processing unit detects the specified degrees and prompts the transmission through a backscattering process via the inductive hyperlink. all of the instrumentation, other than the facility module, is carried out within the so known as BioChip. Following the belief of the powering hyperlink to reap strength of the magnetic prompted hyperlink on the implanted machine, a Multi-Harvesting energy Chip (MHPC) has been additionally designed.

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Additional info for A CMOS Self-Powered Front-End Architecture for Subcutaneous Event-Detector Devices: Three-Electrodes Amperometric Biosensor Approach

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The second mode consists in the use of each source regardless of the other ones. In that mode, it is necessary to use Multiple Storage Devices (MSD), one for each source. Using the second mode it is possible to power more than one independent load at the same time, whereas using the first mode, it is possible to collect more energy in the storage device but only power one common load. Another important aspect consists in controlling the stored energy and how to transfer it to the load. Basically, the MHPC introduces a control module that manages this situation.

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The three-electrodes are: a) the working electrode (W), which serves as a surface on with the electrochemical reaction takes place; b) the reference electrode (R), used to measure the potential at the WE , and c) the counter electrode (C), or also called auxiliary electrode (A), has the role to supply the current required for the electrochemical reaction at the W. The three electrodes topology provides greater stability and reliability than a two electrodes topology. It avoids the polarization of the reference electrode and hence, it is a constant voltage supply between the reference and work electrodes.

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