Chaotic electronic circuit design, its realization and a communication implementatiton

Chaos is a popular discipline which has a lot of application fields. One of these application fields is secure communications. It can be determined whether behaviors are chaotic or not by analyzing the behaviors of the dynamic systems by different methods. Chaotic signals are sensitively dependent on the initial conditions. They have unpredictable features and an image-like wide-spring spectrum. Different, reliable communication applications can be carried out by using the features of chaotic signs. In the first part of this thesis, some information about chaos and dynamic system was given. In the third part, a lot of chaotic system examples were examined and analyzed. In the fourth part, the modeling of continuous timing systems, circuit design and validation were mentioned. Within this scope in the fourth part, first a simple circuit design was proposed for a Lorenz and Chen systems, which are well known in literature, and simulation results were presented. Secondly, the circuit design and application of Halvorsen system, which was not developed before, was made and the results were presented. Thirdly, the circuit design of a Dört sarmallı chaotic system (Pehlivan, 2011) and the simulation results were examined. Then, The oscillator circuit of chaotic C system, which was mentioned by Pehlivan in 2007 (Pehlivan, 2007), was designed and the simulations were made for the first time. Fifthly, chaotic G system, which was mentioned in 2007 and 2011 (Pehlivan, 2007), (Pehlivan, 2010),was analyzed in detail and the circuit design and simulations were made by current carrier elements(CCII) for the first time. In the fifth part of the thesis, synchronization of chaotic systems was told and synchronization performance was conducted successfully for Lorenz system and chaotic G(Pehlivan, 2010) system as both Matlab-Simulink and electronic circuit. In the sixth part, the communication of chaotic system by the hiding method of chaotic systems was presented, and signal hiding applications were conducted in Orcad-PSpice and real circuit environment by using Lorenz and chaotic (Pehlivan, 2010) system again. It was conducted by the simulations and applications that the chaotic systems can be synchronized and can be used for signal hiding applications.