On the Study of Chaotic Colpitts Oscillator Using Simulations and Experiments

This paper presents a comparative study of the Colpitts oscillator circuit using circuit simulations and experimental results. Different techniques of dynamical systems theory like time series plots, phase portraits and Lyapunov exponents were employed. The time series plots and phase portraits for different state variables of Colpitts oscillator circuit, obtained from PSpice simulation and experimental implementation, were compared with each other. This compasison showed that both the results are identical. It is evident that chaotic Colpitts oscillator exhibited periodic and aperiodic behavior for different values of the circuit parameters.