High-level simulation of an FSK modulator based on memconductor

Abstract

This paper deals with the high-level simulation of a frequency-shift-keying (FSK) modulator based on charge-controlled memconductor. The behavioral model of the memconductor is built on SIMULINK under MATLAB environment. It is demonstrated that the incremental memconductance increases and decreases according the width and amplitude of a positive and negative pulse signal, respectively; whereas the decremental memconductance increases and decreases according the width and amplitude of a negative and positive pulse signal. Both incremental and decremental memconductances are used to on-line reconfigure the frequency of oscillation of a single-memconductor controlled oscillator configured as FSK modulator. The obtained results not only allows an easy reconfigurability of the FSK modulator, but also demonstrate the viability of the memconductor to be used in other applications such as cellular neural networks, controllers, sensors, chaotic systems, relaxation oscillators, nonvolatile memory devices and programmable analog circuits.