Capacitorless Model of a VO2 Oscillator

TL;DR

This paper presents a capacitorless VO2 oscillator model that uses negative feedback with delay, enabling circuit miniaturization and potential applications in neural networks for pattern recognition.

Contribution

A novel capacitorless VO2 oscillator model using a transistor and thermal sensor with delayed feedback, facilitating circuit miniaturization and array integration.

Findings

Oscillation period controlled by sensor distance

Capacitorless design allows significant miniaturization

Suitable for large oscillator arrays in neural networks

Abstract

We implement a capacitorless model of a VO2 oscillator by introducing into the circuit of a field-effect transistor and a VO2 thermal sensor, which provide negative current feedback with a time delay. We compare the dynamics of current and voltage oscillations on a switch in a circuit with a capacitor and without a capacitor. The oscillation period in the capacitorless model is controlled in a narrow range by changing the distance between the switch and the sensor. The capacitorless model provides the possibility of significant miniaturization of the oscillator circuit, and it is important for the implementation of large arrays of oscillators in oscillatory neural networks to solve the problem of classification and pattern recognition.