Energy harvesting microsystems based on the QFG MOS transistors

Feasibility of the Quasi Floating Gate (QFG) MOSFET to implement the electronic circuits required in Energy Harvesting or Energy Scavenging microsystems is addressed. Its application in analog circuits allows energy-efficient low-voltage and class AB operation with quiescent currents much lower than the dynamic currents. When it is applied to CMOS digital logic, it allows subthreshold operation with modest performance degradation. Simulation and measurement results of various circuits are presented, validating in practice the proposed techniques.