Coupled Chaotic Colpitts Oscillators: Identical and Mismatched Cases
A system consisting of two linearly coupled chaotic Colpitts oscillators is considered. Two different coupling configurations, namely coupled collector nodes (C–C) and coupled emitter nodes (E–E) have been investigated. In addition to identical oscillators the case of mismatched circuits has been studied. Specifically the influence of the transistor parameter mismatch has been analyzed. The relative synchronization error has been estimated for different mismatch levels provided the coupling coefficient is twice larger than the synchronization threshold. Illustrative experimental results, including phase portraits and synchronization error are presented.
Key Wordschaos Colpitts oscillator electronics nonlinear dynamics synchronization
Unable to display preview. Download preview PDF.
- 2.Burykin, V. A. and Panas, A. I., ‘Chaotic synchronization of RF generators’, in Proceedings of the 5th International Specialist Workshop on Nonlinear Dynamics of Electronic Systems NDES'97, Moscow, Russia, June 26–27, 1997, pp. 548–553.Google Scholar
- 3.Rubezic, V. and Ostojic, R., ‘Synchronization of chaotic Colpitts oscillators with applications to binary communications’, in Proceedings of the 6th IEEE International Conference on Electronics, Circuits and Systems ICECS '99, Paphos, Cyprus, September 5–8, 1999, Vol. 1, pp. 153–156.Google Scholar
- 4.Uchida, A., Kawano, M., and Yoshomori, S., ‘Dual synchronization of chaos in Colpitts electronic oscillators and its applications for communication’, Physical Review E 68, 2003, 056207-1-11.Google Scholar
- 6.Tamaševičius, A., Mykolaitis, G., Bumeliené, S., čenys, A., and Lindberg, E., ‘Synchronization of VHF chaotic Colpitts oscillator’, in Proceedings of the Ninth Workshop on Nonlinear Dynamics of Electronic Systems NDES'97, Delft, The Netherlands, June 21–23, 2001, pp. 223–226.Google Scholar