Different Types of Synchronization in Coupled Network Based Chaotic   Circuits
  We propose a simple and new unified method to achieve lag, complete and anticipatory synchronizations in coupled nonlinear systems. It can be considered as an alternative to the subsystem and intentional parameter mismatch methods. This novel method is illustrated in a unidirectionally coupled RC phase shift network based Chua's circuit. Employing feedback coupling, different types of chaos synchronization are observed experimentally and numerically in coupled identical chaotic oscillators {\emph{without using time delay}}. With a simple switch in the experimental set up we observe different kinds of synchronization. We also analyze the coupled system with numerical simulations. 
K. Srinivasan, V.K Chandrasekar, R. Gladwin Pradeep, K. Murali, M.   Lakshmanan
nlin.CD