Design of Memristor Based Logic Gates for Low Power Wireless Sensors in Biomedical Applications

Current biomedical applications are using numerous wired and wireless sensors that keep track of various biological signals. These signals are continuously tracked, processed, and monitored for different biomedical applications. In this process, power consumption of the sensor is one of the important parameters to investigate. Most of the signal processing mechanisms is performed in mobile or computer-based applications. But data conversion and transfer can only be performed in sensor hardware where basic arithmetic operations are evaluated on voltages or current values. This work make use of a new and simple method to perform analog arithmetic operations, in which signals are interpreted and also stored using the memristor, rather than voltage or current. A new circuit is also being developed for programming the memristor's memristance with a predetermined analog value. The power dissipated by CMOS EX-NOR gate is highest, the power dissipated by memristor NOR gate is least. This paper will use the LTspice simulator, a common version of SPICE, to address memristor behavior.